/usr/bin/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_spec1_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:08:13,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:08:13,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:08:13,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:08:13,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:08:13,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:08:13,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:08:13,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:08:13,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:08:13,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:08:13,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:08:13,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:08:13,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:08:13,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:08:13,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:08:13,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:08:13,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:08:13,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:08:13,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:08:13,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:08:13,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:08:13,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:08:13,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:08:13,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:08:13,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:08:13,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:08:13,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:08:13,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:08:13,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:08:13,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:08:13,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:08:13,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:08:13,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:08:13,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:08:13,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:08:13,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:08:13,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:08:13,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:08:13,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:08:13,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:08:13,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:08:13,944 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 [2019-11-07 04:08:13,977 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:08:13,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:08:13,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:08:13,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:08:13,982 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:08:13,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:08:13,983 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:08:13,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:08:13,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:08:13,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:08:13,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:08:13,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:08:13,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:08:13,986 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:08:13,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:08:13,986 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:08:13,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:08:13,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:08:13,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:08:13,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:08:13,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:08:13,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:08:13,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:08:13,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:08:13,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:08:13,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:08:13,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:08:13,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:08:13,990 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 [2019-11-07 04:08:14,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:08:14,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:08:14,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:08:14,280 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:08:14,281 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:08:14,281 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c [2019-11-07 04:08:14,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35824e276/8fcaccd6da4e4c21aa5501d1ac7c095f/FLAGc10c1d67c [2019-11-07 04:08:14,995 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:08:14,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c [2019-11-07 04:08:15,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35824e276/8fcaccd6da4e4c21aa5501d1ac7c095f/FLAGc10c1d67c [2019-11-07 04:08:15,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35824e276/8fcaccd6da4e4c21aa5501d1ac7c095f [2019-11-07 04:08:15,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:08:15,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:08:15,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:15,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:08:15,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:08:15,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:15" (1/1) ... [2019-11-07 04:08:15,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f9a9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:15, skipping insertion in model container [2019-11-07 04:08:15,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:15" (1/1) ... [2019-11-07 04:08:15,200 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:08:15,269 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:08:16,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:16,022 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:08:16,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:08:16,223 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:08:16,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16 WrapperNode [2019-11-07 04:08:16,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:08:16,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:08:16,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:08:16,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:08:16,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16" (1/1) ... [2019-11-07 04:08:16,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16" (1/1) ... [2019-11-07 04:08:16,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16" (1/1) ... [2019-11-07 04:08:16,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16" (1/1) ... [2019-11-07 04:08:16,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16" (1/1) ... [2019-11-07 04:08:16,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16" (1/1) ... [2019-11-07 04:08:16,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16" (1/1) ... [2019-11-07 04:08:16,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:08:16,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:08:16,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:08:16,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:08:16,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16" (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 [2019-11-07 04:08:16,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:08:16,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:08:16,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:16,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:08:16,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:16,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:08:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:08:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:08:16,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:08:16,509 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:08:16,509 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:08:16,509 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:08:16,509 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:08:16,509 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:08:16,512 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:08:16,512 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:08:16,513 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:08:16,513 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:08:16,513 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:08:16,514 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:08:16,514 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:08:16,514 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:08:16,514 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:08:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:08:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:08:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:08:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:08:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:08:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:08:16,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:08:16,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:08:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:08:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:08:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:08:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:08:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:08:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:08:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:08:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:08:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:08:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:08:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:08:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:08:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:08:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:08:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:08:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:08:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:08:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:08:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:08:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:08:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:08:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:08:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:08:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:08:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:08:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:08:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:08:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:08:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:08:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:08:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:08:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:08:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:08:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:08:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:08:16,525 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:08:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:08:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:08:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:08:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:08:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:08:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:08:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:08:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:08:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:08:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:08:16,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:08:16,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:08:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:08:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:08:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:08:16,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:08:16,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:08:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:08:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:08:16,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:08:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:08:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:08:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:08:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:08:16,534 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:08:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:08:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:08:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:08:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:08:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:08:16,535 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:08:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:08:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:08:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:08:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:08:16,536 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:08:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:08:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:08:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:08:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:08:16,537 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:08:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:08:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:08:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:08:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:08:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:08:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:08:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:08:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:08:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:08:16,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-07 04:08:16,540 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2019-11-07 04:08:16,540 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:08:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:08:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:08:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2019-11-07 04:08:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2019-11-07 04:08:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:08:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:08:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:08:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:08:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:08:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:08:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:08:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:08:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:08:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:08:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:08:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:08:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:08:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:08:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:08:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:08:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:08:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:08:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:08:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:08:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:08:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:08:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:08:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:08:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:08:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:08:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:08:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:08:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:08:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:08:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:08:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:08:21,748 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:08:21,749 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:08:21,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:21 BoogieIcfgContainer [2019-11-07 04:08:21,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:08:21,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:08:21,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:08:21,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:08:21,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:08:15" (1/3) ... [2019-11-07 04:08:21,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70849879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:21, skipping insertion in model container [2019-11-07 04:08:21,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:16" (2/3) ... [2019-11-07 04:08:21,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70849879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:08:21, skipping insertion in model container [2019-11-07 04:08:21,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:08:21" (3/3) ... [2019-11-07 04:08:21,761 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2019-11-07 04:08:21,771 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:08:21,784 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:08:21,795 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:08:21,843 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:08:21,843 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:08:21,844 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:08:21,844 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:08:21,844 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:08:21,844 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:08:21,844 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:08:21,844 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:08:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states. [2019-11-07 04:08:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-11-07 04:08:21,916 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:21,920 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2019-11-07 04:08:21,922 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:21,929 INFO L82 PathProgramCache]: Analyzing trace with hash -3497016, now seen corresponding path program 1 times [2019-11-07 04:08:21,939 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:21,939 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047002110] [2019-11-07 04:08:21,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:08:22,754 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047002110] [2019-11-07 04:08:22,754 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:22,755 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:08:22,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603178496] [2019-11-07 04:08:22,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:08:22,762 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:22,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:08:22,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:08:22,780 INFO L87 Difference]: Start difference. First operand 538 states. Second operand 8 states. [2019-11-07 04:08:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:22,976 INFO L93 Difference]: Finished difference Result 829 states and 1286 transitions. [2019-11-07 04:08:22,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:08:22,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2019-11-07 04:08:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:23,019 INFO L225 Difference]: With dead ends: 829 [2019-11-07 04:08:23,019 INFO L226 Difference]: Without dead ends: 452 [2019-11-07 04:08:23,033 INFO L630 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 [2019-11-07 04:08:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-11-07 04:08:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 417. [2019-11-07 04:08:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-11-07 04:08:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 624 transitions. [2019-11-07 04:08:23,149 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 624 transitions. Word has length 115 [2019-11-07 04:08:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:23,150 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 624 transitions. [2019-11-07 04:08:23,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:08:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 624 transitions. [2019-11-07 04:08:23,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:08:23,164 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:23,165 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2019-11-07 04:08:23,165 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:23,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1674674738, now seen corresponding path program 1 times [2019-11-07 04:08:23,168 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:23,168 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089954044] [2019-11-07 04:08:23,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:08:23,606 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089954044] [2019-11-07 04:08:23,607 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:23,608 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:08:23,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56583339] [2019-11-07 04:08:23,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:23,619 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:23,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:23,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:23,619 INFO L87 Difference]: Start difference. First operand 417 states and 624 transitions. Second operand 7 states. [2019-11-07 04:08:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:27,320 INFO L93 Difference]: Finished difference Result 1260 states and 1955 transitions. [2019-11-07 04:08:27,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 04:08:27,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-11-07 04:08:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:27,336 INFO L225 Difference]: With dead ends: 1260 [2019-11-07 04:08:27,336 INFO L226 Difference]: Without dead ends: 896 [2019-11-07 04:08:27,340 INFO L630 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 [2019-11-07 04:08:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2019-11-07 04:08:27,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 869. [2019-11-07 04:08:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2019-11-07 04:08:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1350 transitions. [2019-11-07 04:08:27,480 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1350 transitions. Word has length 120 [2019-11-07 04:08:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:27,481 INFO L462 AbstractCegarLoop]: Abstraction has 869 states and 1350 transitions. [2019-11-07 04:08:27,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1350 transitions. [2019-11-07 04:08:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-07 04:08:27,493 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:27,493 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2019-11-07 04:08:27,494 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:27,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:27,494 INFO L82 PathProgramCache]: Analyzing trace with hash -721454288, now seen corresponding path program 1 times [2019-11-07 04:08:27,495 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:27,495 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250653380] [2019-11-07 04:08:27,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:08:27,774 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250653380] [2019-11-07 04:08:27,778 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:27,778 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:08:27,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269188265] [2019-11-07 04:08:27,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:08:27,781 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:27,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:08:27,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:08:27,781 INFO L87 Difference]: Start difference. First operand 869 states and 1350 transitions. Second operand 5 states. [2019-11-07 04:08:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:27,864 INFO L93 Difference]: Finished difference Result 1370 states and 2143 transitions. [2019-11-07 04:08:27,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:08:27,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-11-07 04:08:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:27,873 INFO L225 Difference]: With dead ends: 1370 [2019-11-07 04:08:27,873 INFO L226 Difference]: Without dead ends: 891 [2019-11-07 04:08:27,877 INFO L630 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 [2019-11-07 04:08:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2019-11-07 04:08:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 881. [2019-11-07 04:08:27,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2019-11-07 04:08:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1365 transitions. [2019-11-07 04:08:27,965 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1365 transitions. Word has length 124 [2019-11-07 04:08:27,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:27,967 INFO L462 AbstractCegarLoop]: Abstraction has 881 states and 1365 transitions. [2019-11-07 04:08:27,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:08:27,968 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1365 transitions. [2019-11-07 04:08:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-07 04:08:27,972 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:27,973 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2019-11-07 04:08:27,973 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:27,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1564514424, now seen corresponding path program 1 times [2019-11-07 04:08:27,974 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:27,974 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404510256] [2019-11-07 04:08:27,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:08:28,420 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404510256] [2019-11-07 04:08:28,420 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:28,420 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:08:28,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496970859] [2019-11-07 04:08:28,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:08:28,422 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:28,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:08:28,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:08:28,423 INFO L87 Difference]: Start difference. First operand 881 states and 1365 transitions. Second operand 8 states. [2019-11-07 04:08:31,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:31,695 INFO L93 Difference]: Finished difference Result 1856 states and 2884 transitions. [2019-11-07 04:08:31,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:08:31,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2019-11-07 04:08:31,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:31,706 INFO L225 Difference]: With dead ends: 1856 [2019-11-07 04:08:31,706 INFO L226 Difference]: Without dead ends: 1269 [2019-11-07 04:08:31,709 INFO L630 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 [2019-11-07 04:08:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2019-11-07 04:08:31,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1219. [2019-11-07 04:08:31,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2019-11-07 04:08:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1849 transitions. [2019-11-07 04:08:31,783 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1849 transitions. Word has length 128 [2019-11-07 04:08:31,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:31,783 INFO L462 AbstractCegarLoop]: Abstraction has 1219 states and 1849 transitions. [2019-11-07 04:08:31,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:08:31,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1849 transitions. [2019-11-07 04:08:31,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:08:31,787 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:31,787 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1] [2019-11-07 04:08:31,788 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:31,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:31,788 INFO L82 PathProgramCache]: Analyzing trace with hash 38619959, now seen corresponding path program 1 times [2019-11-07 04:08:31,788 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:31,789 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388622734] [2019-11-07 04:08:31,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:08:32,106 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388622734] [2019-11-07 04:08:32,107 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:32,107 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:08:32,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105154711] [2019-11-07 04:08:32,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:32,108 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:32,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:32,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:32,109 INFO L87 Difference]: Start difference. First operand 1219 states and 1849 transitions. Second operand 7 states. [2019-11-07 04:08:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:32,391 INFO L93 Difference]: Finished difference Result 2288 states and 3556 transitions. [2019-11-07 04:08:32,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:08:32,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-11-07 04:08:32,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:32,405 INFO L225 Difference]: With dead ends: 2288 [2019-11-07 04:08:32,405 INFO L226 Difference]: Without dead ends: 1219 [2019-11-07 04:08:32,412 INFO L630 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 [2019-11-07 04:08:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2019-11-07 04:08:32,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2019-11-07 04:08:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2019-11-07 04:08:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1817 transitions. [2019-11-07 04:08:32,502 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1817 transitions. Word has length 131 [2019-11-07 04:08:32,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:32,503 INFO L462 AbstractCegarLoop]: Abstraction has 1219 states and 1817 transitions. [2019-11-07 04:08:32,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:32,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1817 transitions. [2019-11-07 04:08:32,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-07 04:08:32,507 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:32,507 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2019-11-07 04:08:32,508 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:32,509 INFO L82 PathProgramCache]: Analyzing trace with hash -987124071, now seen corresponding path program 1 times [2019-11-07 04:08:32,509 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:32,509 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254262491] [2019-11-07 04:08:32,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:08:32,716 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254262491] [2019-11-07 04:08:32,717 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:32,718 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:08:32,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085827273] [2019-11-07 04:08:32,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:08:32,719 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:32,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:08:32,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:08:32,720 INFO L87 Difference]: Start difference. First operand 1219 states and 1817 transitions. Second operand 7 states. [2019-11-07 04:08:36,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:08:36,526 INFO L93 Difference]: Finished difference Result 2157 states and 3226 transitions. [2019-11-07 04:08:36,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:08:36,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2019-11-07 04:08:36,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:08:36,540 INFO L225 Difference]: With dead ends: 2157 [2019-11-07 04:08:36,541 INFO L226 Difference]: Without dead ends: 1289 [2019-11-07 04:08:36,547 INFO L630 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 [2019-11-07 04:08:36,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2019-11-07 04:08:36,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1246. [2019-11-07 04:08:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2019-11-07 04:08:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1851 transitions. [2019-11-07 04:08:36,640 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1851 transitions. Word has length 133 [2019-11-07 04:08:36,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:08:36,642 INFO L462 AbstractCegarLoop]: Abstraction has 1246 states and 1851 transitions. [2019-11-07 04:08:36,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:08:36,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1851 transitions. [2019-11-07 04:08:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 04:08:36,647 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:08:36,648 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2019-11-07 04:08:36,648 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:08:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:08:36,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1327241965, now seen corresponding path program 1 times [2019-11-07 04:08:36,649 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:08:36,649 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882934959] [2019-11-07 04:08:36,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:08:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:08:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 04:08:37,326 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882934959] [2019-11-07 04:08:37,326 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:08:37,326 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 04:08:37,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001426926] [2019-11-07 04:08:37,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 04:08:37,328 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:08:37,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 04:08:37,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2019-11-07 04:08:37,330 INFO L87 Difference]: Start difference. First operand 1246 states and 1851 transitions. Second operand 26 states.