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_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:51,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:51,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:51,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:51,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:51,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:51,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:51,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:51,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:51,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:51,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:51,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:51,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:51,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:51,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:51,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:51,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:51,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:51,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:51,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:51,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:51,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:51,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:51,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:51,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:51,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:51,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:51,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:51,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:51,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:51,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:51,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:51,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:51,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:51,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:51,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:51,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:51,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:51,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:51,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:51,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:51,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:04:51,966 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:51,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:51,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:51,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:51,969 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:51,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:51,969 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:51,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:51,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:51,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:51,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:51,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:51,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:51,972 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:51,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:51,972 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:51,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:51,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:51,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:51,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:51,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:51,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:51,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:51,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:51,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:51,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:51,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:51,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:51,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:04:52,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:52,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:52,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:52,293 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:52,294 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:52,294 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2019-10-13 23:04:52,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449acb475/7ef56ff2e70b44aa84e216cdefa89393/FLAG9f647b953 [2019-10-13 23:04:52,997 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:52,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product26.cil.c [2019-10-13 23:04:53,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449acb475/7ef56ff2e70b44aa84e216cdefa89393/FLAG9f647b953 [2019-10-13 23:04:53,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449acb475/7ef56ff2e70b44aa84e216cdefa89393 [2019-10-13 23:04:53,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:53,247 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:53,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:53,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:53,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:53,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:53" (1/1) ... [2019-10-13 23:04:53,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26202a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:53, skipping insertion in model container [2019-10-13 23:04:53,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:53" (1/1) ... [2019-10-13 23:04:53,261 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:53,341 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:54,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:54,116 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:54,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:54,414 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:54,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54 WrapperNode [2019-10-13 23:04:54,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:54,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:54,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:54,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:54,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54" (1/1) ... [2019-10-13 23:04:54,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54" (1/1) ... [2019-10-13 23:04:54,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54" (1/1) ... [2019-10-13 23:04:54,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54" (1/1) ... [2019-10-13 23:04:54,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54" (1/1) ... [2019-10-13 23:04:54,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54" (1/1) ... [2019-10-13 23:04:54,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54" (1/1) ... [2019-10-13 23:04:54,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:54,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:54,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:54,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:54,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:54,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:54,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:54,739 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:54,740 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:54,740 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:54,740 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:54,740 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:54,740 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:54,741 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:54,741 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:54,741 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:54,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:54,742 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:54,742 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:54,743 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:54,743 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:54,743 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:54,743 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:54,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:54,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:54,744 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:54,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:54,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:54,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:54,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:54,746 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:54,746 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:54,746 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:54,746 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:54,746 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:54,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:54,747 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:54,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:54,747 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:54,747 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:54,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:54,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:54,748 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:54,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:54,748 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:54,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2019-10-13 23:04:54,749 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty [2019-10-13 23:04:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:54,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:54,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:54,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:54,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:54,751 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:54,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:54,752 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:54,752 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:54,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:54,752 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:54,753 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:54,753 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:54,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:54,754 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:54,754 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:54,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:54,754 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:54,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:54,755 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:54,755 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:54,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:54,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:54,762 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:54,766 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:54,767 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:54,768 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:54,769 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:54,770 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2019-10-13 23:04:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:54,771 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__empty [2019-10-13 23:04:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:54,772 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:54,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:54,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:54,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:59,783 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:59,784 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:59,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:59 BoogieIcfgContainer [2019-10-13 23:04:59,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:59,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:59,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:59,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:59,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:53" (1/3) ... [2019-10-13 23:04:59,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412a6d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:59, skipping insertion in model container [2019-10-13 23:04:59,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:54" (2/3) ... [2019-10-13 23:04:59,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412a6d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:59, skipping insertion in model container [2019-10-13 23:04:59,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:59" (3/3) ... [2019-10-13 23:04:59,794 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2019-10-13 23:04:59,804 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:59,814 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:59,826 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:59,855 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:59,856 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:59,856 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:59,856 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:59,856 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:59,856 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:59,856 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:59,856 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2019-10-13 23:04:59,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:04:59,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:59,902 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:59,905 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:59,911 INFO L82 PathProgramCache]: Analyzing trace with hash 693571216, now seen corresponding path program 1 times [2019-10-13 23:04:59,920 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:59,920 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455421563] [2019-10-13 23:04:59,921 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,921 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:00,716 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455421563] [2019-10-13 23:05:00,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:00,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:00,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863244927] [2019-10-13 23:05:00,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:00,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:00,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:00,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:00,746 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 3 states. [2019-10-13 23:05:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:01,159 INFO L93 Difference]: Finished difference Result 1318 states and 2026 transitions. [2019-10-13 23:05:01,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:01,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-13 23:05:01,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:01,196 INFO L225 Difference]: With dead ends: 1318 [2019-10-13 23:05:01,196 INFO L226 Difference]: Without dead ends: 866 [2019-10-13 23:05:01,205 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2019-10-13 23:05:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 820. [2019-10-13 23:05:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2019-10-13 23:05:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1256 transitions. [2019-10-13 23:05:01,432 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1256 transitions. Word has length 81 [2019-10-13 23:05:01,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:01,433 INFO L462 AbstractCegarLoop]: Abstraction has 820 states and 1256 transitions. [2019-10-13 23:05:01,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1256 transitions. [2019-10-13 23:05:01,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-13 23:05:01,456 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:01,458 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:01,459 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:01,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1331172463, now seen corresponding path program 1 times [2019-10-13 23:05:01,459 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:01,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310414882] [2019-10-13 23:05:01,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:01,460 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:01,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:01,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310414882] [2019-10-13 23:05:01,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:01,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:01,743 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713667316] [2019-10-13 23:05:01,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:01,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:01,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:01,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:01,761 INFO L87 Difference]: Start difference. First operand 820 states and 1256 transitions. Second operand 7 states. [2019-10-13 23:05:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:04,712 INFO L93 Difference]: Finished difference Result 2446 states and 3840 transitions. [2019-10-13 23:05:04,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:05:04,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2019-10-13 23:05:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:04,727 INFO L225 Difference]: With dead ends: 2446 [2019-10-13 23:05:04,727 INFO L226 Difference]: Without dead ends: 1657 [2019-10-13 23:05:04,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2019-10-13 23:05:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1609. [2019-10-13 23:05:04,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2019-10-13 23:05:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2498 transitions. [2019-10-13 23:05:04,856 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2498 transitions. Word has length 109 [2019-10-13 23:05:04,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:04,856 INFO L462 AbstractCegarLoop]: Abstraction has 1609 states and 2498 transitions. [2019-10-13 23:05:04,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2498 transitions. [2019-10-13 23:05:04,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 23:05:04,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:04,861 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:04,861 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:04,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:04,862 INFO L82 PathProgramCache]: Analyzing trace with hash -694421880, now seen corresponding path program 1 times [2019-10-13 23:05:04,862 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:04,862 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51426487] [2019-10-13 23:05:04,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:04,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:04,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:05,086 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51426487] [2019-10-13 23:05:05,086 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:05,086 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:05:05,087 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338034611] [2019-10-13 23:05:05,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:05:05,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:05,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:05:05,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:05:05,088 INFO L87 Difference]: Start difference. First operand 1609 states and 2498 transitions. Second operand 8 states. [2019-10-13 23:05:08,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:08,385 INFO L93 Difference]: Finished difference Result 5863 states and 9213 transitions. [2019-10-13 23:05:08,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:05:08,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-10-13 23:05:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:08,425 INFO L225 Difference]: With dead ends: 5863 [2019-10-13 23:05:08,425 INFO L226 Difference]: Without dead ends: 4285 [2019-10-13 23:05:08,439 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2019-10-13 23:05:08,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 4269. [2019-10-13 23:05:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4269 states. [2019-10-13 23:05:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4269 states to 4269 states and 6557 transitions. [2019-10-13 23:05:08,746 INFO L78 Accepts]: Start accepts. Automaton has 4269 states and 6557 transitions. Word has length 107 [2019-10-13 23:05:08,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:08,746 INFO L462 AbstractCegarLoop]: Abstraction has 4269 states and 6557 transitions. [2019-10-13 23:05:08,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:05:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4269 states and 6557 transitions. [2019-10-13 23:05:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-13 23:05:08,751 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:08,751 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:08,751 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:08,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1786234194, now seen corresponding path program 1 times [2019-10-13 23:05:08,752 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:08,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883417193] [2019-10-13 23:05:08,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:08,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:05:09,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883417193] [2019-10-13 23:05:09,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248634778] [2019-10-13 23:05:09,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:09,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:09,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:09,716 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:09,884 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:09,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:09,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142392693] [2019-10-13 23:05:09,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:09,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:09,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:09,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:09,888 INFO L87 Difference]: Start difference. First operand 4269 states and 6557 transitions. Second operand 3 states. [2019-10-13 23:05:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:10,442 INFO L93 Difference]: Finished difference Result 12077 states and 19230 transitions. [2019-10-13 23:05:10,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:10,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2019-10-13 23:05:10,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:10,531 INFO L225 Difference]: With dead ends: 12077 [2019-10-13 23:05:10,532 INFO L226 Difference]: Without dead ends: 7839 [2019-10-13 23:05:10,573 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:10,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7839 states. [2019-10-13 23:05:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7839 to 7529. [2019-10-13 23:05:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7529 states. [2019-10-13 23:05:11,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7529 states to 7529 states and 11714 transitions. [2019-10-13 23:05:11,138 INFO L78 Accepts]: Start accepts. Automaton has 7529 states and 11714 transitions. Word has length 111 [2019-10-13 23:05:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:11,138 INFO L462 AbstractCegarLoop]: Abstraction has 7529 states and 11714 transitions. [2019-10-13 23:05:11,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:11,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7529 states and 11714 transitions. [2019-10-13 23:05:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:05:11,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:11,142 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:11,349 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:11,350 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:11,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:11,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2130624422, now seen corresponding path program 1 times [2019-10-13 23:05:11,351 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:11,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125791863] [2019-10-13 23:05:11,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:11,351 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:11,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:05:11,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125791863] [2019-10-13 23:05:11,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050650679] [2019-10-13 23:05:11,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:12,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:12,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:12,483 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:12,623 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:12,624 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:12,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346577924] [2019-10-13 23:05:12,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:12,625 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:12,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:12,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:12,625 INFO L87 Difference]: Start difference. First operand 7529 states and 11714 transitions. Second operand 3 states. [2019-10-13 23:05:13,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:13,151 INFO L93 Difference]: Finished difference Result 16635 states and 26341 transitions. [2019-10-13 23:05:13,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:13,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-10-13 23:05:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:13,275 INFO L225 Difference]: With dead ends: 16635 [2019-10-13 23:05:13,275 INFO L226 Difference]: Without dead ends: 9137 [2019-10-13 23:05:13,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9137 states. [2019-10-13 23:05:13,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9137 to 8923. [2019-10-13 23:05:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8923 states. [2019-10-13 23:05:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8923 states to 8923 states and 13865 transitions. [2019-10-13 23:05:14,031 INFO L78 Accepts]: Start accepts. Automaton has 8923 states and 13865 transitions. Word has length 112 [2019-10-13 23:05:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:14,033 INFO L462 AbstractCegarLoop]: Abstraction has 8923 states and 13865 transitions. [2019-10-13 23:05:14,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8923 states and 13865 transitions. [2019-10-13 23:05:14,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:05:14,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:14,042 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:14,250 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:14,250 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:14,251 INFO L82 PathProgramCache]: Analyzing trace with hash 697797265, now seen corresponding path program 1 times [2019-10-13 23:05:14,252 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:14,252 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378556497] [2019-10-13 23:05:14,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:14,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:14,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:05:14,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378556497] [2019-10-13 23:05:14,502 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:14,502 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:14,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20070904] [2019-10-13 23:05:14,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:14,503 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:14,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:14,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:14,504 INFO L87 Difference]: Start difference. First operand 8923 states and 13865 transitions. Second operand 10 states. [2019-10-13 23:05:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:16,295 INFO L93 Difference]: Finished difference Result 19637 states and 30850 transitions. [2019-10-13 23:05:16,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:05:16,295 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 118 [2019-10-13 23:05:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:16,375 INFO L225 Difference]: With dead ends: 19637 [2019-10-13 23:05:16,376 INFO L226 Difference]: Without dead ends: 10745 [2019-10-13 23:05:16,423 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 23:05:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2019-10-13 23:05:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10703. [2019-10-13 23:05:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10703 states. [2019-10-13 23:05:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10703 states to 10703 states and 16620 transitions. [2019-10-13 23:05:16,945 INFO L78 Accepts]: Start accepts. Automaton has 10703 states and 16620 transitions. Word has length 118 [2019-10-13 23:05:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:16,946 INFO L462 AbstractCegarLoop]: Abstraction has 10703 states and 16620 transitions. [2019-10-13 23:05:16,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 10703 states and 16620 transitions. [2019-10-13 23:05:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:05:16,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:16,950 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:16,950 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:16,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1827642056, now seen corresponding path program 1 times [2019-10-13 23:05:16,951 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:16,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374842040] [2019-10-13 23:05:16,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:16,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:16,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 23:05:17,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374842040] [2019-10-13 23:05:17,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:17,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:17,235 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877961441] [2019-10-13 23:05:17,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:17,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:17,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:17,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:17,238 INFO L87 Difference]: Start difference. First operand 10703 states and 16620 transitions. Second operand 10 states. [2019-10-13 23:05:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:21,323 INFO L93 Difference]: Finished difference Result 34924 states and 57097 transitions. [2019-10-13 23:05:21,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:05:21,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2019-10-13 23:05:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:21,480 INFO L225 Difference]: With dead ends: 34924 [2019-10-13 23:05:21,480 INFO L226 Difference]: Without dead ends: 24252 [2019-10-13 23:05:21,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:05:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24252 states.