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_spec2_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:08:29,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:08:29,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:08:29,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:08:29,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:08:29,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:08:29,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:08:29,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:08:29,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:08:29,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:08:29,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:08:29,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:08:29,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:08:29,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:08:29,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:08:29,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:08:29,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:08:29,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:08:29,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:08:29,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:08:29,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:08:29,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:08:29,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:08:29,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:08:29,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:08:29,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:08:29,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:08:29,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:08:29,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:08:29,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:08:29,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:08:29,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:08:29,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:08:29,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:08:30,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:08:30,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:08:30,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:08:30,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:08:30,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:08:30,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:08:30,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:08:30,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:08:30,019 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:08:30,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:08:30,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:08:30,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:08:30,023 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:08:30,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:08:30,024 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:08:30,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:08:30,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:08:30,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:08:30,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:08:30,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:08:30,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:08:30,026 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:08:30,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:08:30,027 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:08:30,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:08:30,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:08:30,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:08:30,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:08:30,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:08:30,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:30,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:08:30,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:08:30,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:08:30,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:08:30,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:08:30,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:08:30,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:08:30,386 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:08:30,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:08:30,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:08:30,406 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:08:30,406 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:08:30,407 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c [2019-10-15 03:08:30,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148e2c8f7/556027eda0544bc68693df98b825d16f/FLAG27bd67fb5 [2019-10-15 03:08:31,165 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:08:31,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c [2019-10-15 03:08:31,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148e2c8f7/556027eda0544bc68693df98b825d16f/FLAG27bd67fb5 [2019-10-15 03:08:31,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148e2c8f7/556027eda0544bc68693df98b825d16f [2019-10-15 03:08:31,366 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:08:31,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:08:31,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:31,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:08:31,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:08:31,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:31" (1/1) ... [2019-10-15 03:08:31,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4f9527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:31, skipping insertion in model container [2019-10-15 03:08:31,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:31" (1/1) ... [2019-10-15 03:08:31,391 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:08:31,480 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:08:32,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:32,379 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:08:32,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:08:32,636 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:08:32,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32 WrapperNode [2019-10-15 03:08:32,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:08:32,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:08:32,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:08:32,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:08:32,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32" (1/1) ... [2019-10-15 03:08:32,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32" (1/1) ... [2019-10-15 03:08:32,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32" (1/1) ... [2019-10-15 03:08:32,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32" (1/1) ... [2019-10-15 03:08:32,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32" (1/1) ... [2019-10-15 03:08:32,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32" (1/1) ... [2019-10-15 03:08:32,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32" (1/1) ... [2019-10-15 03:08:32,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:08:32,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:08:32,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:08:32,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:08:32,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:08:32,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:08:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:08:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:32,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:08:32,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:08:32,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:08:32,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:32,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:32,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:32,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:32,955 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:08:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:08:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:08:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:08:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:08:32,957 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:08:32,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:08:32,957 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:08:32,957 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:08:32,958 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:08:32,958 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:08:32,958 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:08:32,958 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:08:32,958 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:08:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:08:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:08:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:08:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:08:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:08:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:08:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:08:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:08:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:08:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:08:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:08:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:08:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:08:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:08:32,961 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:08:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:08:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:08:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:08:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:08:32,962 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:08:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:08:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:08:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:08:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:08:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:08:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:08:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:08:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:08:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:08:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:08:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:08:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:08:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:08:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:08:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:08:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:08:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:08:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:08:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:08:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:08:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:08:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:08:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:08:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:08:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:08:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:08:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:08:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:08:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:08:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:08:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:08:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:08:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:08:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:08:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:08:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:08:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:08:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:08:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:08:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:08:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:08:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:08:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:08:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:08:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:08:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:08:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:08:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:08:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:08:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:08:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:08:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:08:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:08:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:08:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:08:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 03:08:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 03:08:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:08:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:08:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:08:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:08:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:08:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:08:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:08:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:08:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:08:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:08:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:08:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:08:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:08:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:08:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:08:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:08:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:08:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:08:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:08:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:08:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:08:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:08:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:08:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:08:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:08:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:08:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:08:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:08:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:08:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:08:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:08:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:08:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:08:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:08:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:08:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:08:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:08:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:08:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:08:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:08:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:08:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:08:32,982 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:08:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:08:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:08:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:08:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:08:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:08:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:08:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:08:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:08:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:08:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:08:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:08:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:08:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:08:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:08:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:08:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:08:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:08:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:08:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:08:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:08:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:08:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:08:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:08:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:08:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:08:39,709 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:08:39,710 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:08:39,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:39 BoogieIcfgContainer [2019-10-15 03:08:39,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:08:39,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:08:39,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:08:39,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:08:39,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:08:31" (1/3) ... [2019-10-15 03:08:39,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1950939d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:39, skipping insertion in model container [2019-10-15 03:08:39,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:32" (2/3) ... [2019-10-15 03:08:39,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1950939d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:39, skipping insertion in model container [2019-10-15 03:08:39,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:39" (3/3) ... [2019-10-15 03:08:39,721 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.c [2019-10-15 03:08:39,732 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:08:39,742 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:08:39,757 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:08:39,790 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:08:39,791 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:08:39,791 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:08:39,791 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:08:39,791 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:08:39,791 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:08:39,791 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:08:39,792 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:08:39,828 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states. [2019-10-15 03:08:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:08:39,850 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:39,852 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:39,855 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:39,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1500681736, now seen corresponding path program 1 times [2019-10-15 03:08:39,870 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:39,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728315874] [2019-10-15 03:08:39,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:39,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:39,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:40,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728315874] [2019-10-15 03:08:40,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:40,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:08:40,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782861200] [2019-10-15 03:08:40,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:08:40,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:40,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:08:40,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:40,626 INFO L87 Difference]: Start difference. First operand 576 states. Second operand 2 states. [2019-10-15 03:08:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:40,761 INFO L93 Difference]: Finished difference Result 479 states and 710 transitions. [2019-10-15 03:08:40,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:08:40,764 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-15 03:08:40,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:40,804 INFO L225 Difference]: With dead ends: 479 [2019-10-15 03:08:40,805 INFO L226 Difference]: Without dead ends: 445 [2019-10-15 03:08:40,810 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:08:40,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2019-10-15 03:08:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2019-10-15 03:08:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-10-15 03:08:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 659 transitions. [2019-10-15 03:08:40,940 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 659 transitions. Word has length 112 [2019-10-15 03:08:40,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:40,942 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 659 transitions. [2019-10-15 03:08:40,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:08:40,942 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 659 transitions. [2019-10-15 03:08:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:08:40,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:40,950 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:40,951 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash 757640429, now seen corresponding path program 1 times [2019-10-15 03:08:40,951 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:40,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869734205] [2019-10-15 03:08:40,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:40,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:40,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:41,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869734205] [2019-10-15 03:08:41,443 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:41,443 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:08:41,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083884688] [2019-10-15 03:08:41,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:08:41,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:41,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:08:41,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:08:41,447 INFO L87 Difference]: Start difference. First operand 445 states and 659 transitions. Second operand 7 states. [2019-10-15 03:08:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:46,900 INFO L93 Difference]: Finished difference Result 1262 states and 1914 transitions. [2019-10-15 03:08:46,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:08:46,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-15 03:08:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:46,909 INFO L225 Difference]: With dead ends: 1262 [2019-10-15 03:08:46,910 INFO L226 Difference]: Without dead ends: 859 [2019-10-15 03:08:46,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:08:46,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2019-10-15 03:08:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 834. [2019-10-15 03:08:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2019-10-15 03:08:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1261 transitions. [2019-10-15 03:08:47,017 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1261 transitions. Word has length 113 [2019-10-15 03:08:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:47,028 INFO L462 AbstractCegarLoop]: Abstraction has 834 states and 1261 transitions. [2019-10-15 03:08:47,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:08:47,030 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1261 transitions. [2019-10-15 03:08:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:08:47,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:47,040 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:47,040 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1189512345, now seen corresponding path program 1 times [2019-10-15 03:08:47,041 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:47,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360349431] [2019-10-15 03:08:47,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:47,041 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:47,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:47,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360349431] [2019-10-15 03:08:47,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:47,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:47,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126707502] [2019-10-15 03:08:47,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:47,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:47,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:47,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:47,344 INFO L87 Difference]: Start difference. First operand 834 states and 1261 transitions. Second operand 4 states. [2019-10-15 03:08:49,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:49,675 INFO L93 Difference]: Finished difference Result 2486 states and 3856 transitions. [2019-10-15 03:08:49,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:49,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-15 03:08:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:49,698 INFO L225 Difference]: With dead ends: 2486 [2019-10-15 03:08:49,698 INFO L226 Difference]: Without dead ends: 1694 [2019-10-15 03:08:49,706 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2019-10-15 03:08:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1596. [2019-10-15 03:08:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1596 states. [2019-10-15 03:08:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2461 transitions. [2019-10-15 03:08:49,987 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2461 transitions. Word has length 117 [2019-10-15 03:08:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:49,990 INFO L462 AbstractCegarLoop]: Abstraction has 1596 states and 2461 transitions. [2019-10-15 03:08:49,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2461 transitions. [2019-10-15 03:08:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:08:49,998 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:49,999 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:50,000 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:50,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:50,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1781138496, now seen corresponding path program 1 times [2019-10-15 03:08:50,002 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:50,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201859564] [2019-10-15 03:08:50,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:50,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:50,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:50,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201859564] [2019-10-15 03:08:50,297 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:50,297 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:50,298 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053069700] [2019-10-15 03:08:50,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:50,299 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:50,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:50,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:50,300 INFO L87 Difference]: Start difference. First operand 1596 states and 2461 transitions. Second operand 4 states. [2019-10-15 03:08:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:54,009 INFO L93 Difference]: Finished difference Result 4719 states and 7438 transitions. [2019-10-15 03:08:54,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:54,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-15 03:08:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:54,036 INFO L225 Difference]: With dead ends: 4719 [2019-10-15 03:08:54,037 INFO L226 Difference]: Without dead ends: 3166 [2019-10-15 03:08:54,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2019-10-15 03:08:54,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3045. [2019-10-15 03:08:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3045 states. [2019-10-15 03:08:54,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 4762 transitions. [2019-10-15 03:08:54,249 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 4762 transitions. Word has length 118 [2019-10-15 03:08:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:54,252 INFO L462 AbstractCegarLoop]: Abstraction has 3045 states and 4762 transitions. [2019-10-15 03:08:54,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:54,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 4762 transitions. [2019-10-15 03:08:54,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:08:54,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:54,257 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:54,257 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:54,258 INFO L82 PathProgramCache]: Analyzing trace with hash 617969851, now seen corresponding path program 1 times [2019-10-15 03:08:54,258 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:54,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765523377] [2019-10-15 03:08:54,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:54,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:54,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:54,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765523377] [2019-10-15 03:08:54,424 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:54,424 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:54,424 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921528694] [2019-10-15 03:08:54,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:54,426 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:54,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:54,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:54,427 INFO L87 Difference]: Start difference. First operand 3045 states and 4762 transitions. Second operand 4 states. [2019-10-15 03:08:56,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:08:56,636 INFO L93 Difference]: Finished difference Result 9118 states and 14678 transitions. [2019-10-15 03:08:56,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:08:56,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-15 03:08:56,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:08:56,698 INFO L225 Difference]: With dead ends: 9118 [2019-10-15 03:08:56,698 INFO L226 Difference]: Without dead ends: 6118 [2019-10-15 03:08:56,717 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:08:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2019-10-15 03:08:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 5952. [2019-10-15 03:08:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5952 states. [2019-10-15 03:08:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5952 states to 5952 states and 9480 transitions. [2019-10-15 03:08:57,236 INFO L78 Accepts]: Start accepts. Automaton has 5952 states and 9480 transitions. Word has length 119 [2019-10-15 03:08:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:08:57,241 INFO L462 AbstractCegarLoop]: Abstraction has 5952 states and 9480 transitions. [2019-10-15 03:08:57,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:08:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5952 states and 9480 transitions. [2019-10-15 03:08:57,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:08:57,247 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:08:57,247 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:08:57,247 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:08:57,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:08:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1975888482, now seen corresponding path program 1 times [2019-10-15 03:08:57,248 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:08:57,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95652721] [2019-10-15 03:08:57,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:08:57,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:08:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:08:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:08:57,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95652721] [2019-10-15 03:08:57,494 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:08:57,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:08:57,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962449878] [2019-10-15 03:08:57,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:08:57,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:08:57,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:08:57,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:08:57,497 INFO L87 Difference]: Start difference. First operand 5952 states and 9480 transitions. Second operand 4 states. [2019-10-15 03:09:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:00,612 INFO L93 Difference]: Finished difference Result 17941 states and 29889 transitions. [2019-10-15 03:09:00,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:00,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-15 03:09:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:00,783 INFO L225 Difference]: With dead ends: 17941 [2019-10-15 03:09:00,783 INFO L226 Difference]: Without dead ends: 12038 [2019-10-15 03:09:00,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:09:00,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12038 states. [2019-10-15 03:09:03,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12038 to 11783. [2019-10-15 03:09:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11783 states. [2019-10-15 03:09:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11783 states to 11783 states and 19326 transitions. [2019-10-15 03:09:03,071 INFO L78 Accepts]: Start accepts. Automaton has 11783 states and 19326 transitions. Word has length 120 [2019-10-15 03:09:03,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:03,072 INFO L462 AbstractCegarLoop]: Abstraction has 11783 states and 19326 transitions. [2019-10-15 03:09:03,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:09:03,072 INFO L276 IsEmpty]: Start isEmpty. Operand 11783 states and 19326 transitions. [2019-10-15 03:09:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:09:03,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:03,076 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:03,076 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1121696989, now seen corresponding path program 1 times [2019-10-15 03:09:03,077 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:03,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200209621] [2019-10-15 03:09:03,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:03,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:03,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:09:03,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200209621] [2019-10-15 03:09:03,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:09:03,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:09:03,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28463280] [2019-10-15 03:09:03,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:09:03,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:03,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:09:03,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:09:03,253 INFO L87 Difference]: Start difference. First operand 11783 states and 19326 transitions. Second operand 4 states.