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_spec13_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:05:51,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:05:51,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:05:51,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:05:51,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:05:51,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:05:51,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:05:51,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:05:51,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:05:51,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:05:51,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:05:51,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:05:51,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:05:51,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:05:51,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:05:51,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:05:51,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:05:51,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:05:51,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:05:51,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:05:51,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:05:51,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:05:51,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:05:51,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:05:51,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:05:51,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:05:51,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:05:51,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:05:51,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:05:51,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:05:51,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:05:51,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:05:51,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:05:51,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:05:51,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:05:51,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:05:51,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:05:51,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:05:51,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:05:51,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:05:51,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:05:51,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:05:51,831 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:05:51,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:05:51,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:05:51,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:05:51,836 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:05:51,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:05:51,837 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:05:51,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:05:51,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:05:51,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:05:51,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:05:51,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:05:51,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:05:51,838 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:05:51,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:05:51,838 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:05:51,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:05:51,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:05:51,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:05:51,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:05:51,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:05:51,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:05:51,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:05:51,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:05:51,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:05:51,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:05:51,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:05:51,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:05:51,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:05:52,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:05:52,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:05:52,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:05:52,193 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:05:52,193 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:05:52,194 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-15 03:05:52,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5cfac48a/58c7e5ffde794d3880e63ee96fe47321/FLAG30882aea4 [2019-10-15 03:05:53,121 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:05:53,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product32.cil.c [2019-10-15 03:05:53,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5cfac48a/58c7e5ffde794d3880e63ee96fe47321/FLAG30882aea4 [2019-10-15 03:05:53,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5cfac48a/58c7e5ffde794d3880e63ee96fe47321 [2019-10-15 03:05:53,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:05:53,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:05:53,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:53,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:05:53,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:05:53,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:53" (1/1) ... [2019-10-15 03:05:53,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2e9cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:53, skipping insertion in model container [2019-10-15 03:05:53,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:53" (1/1) ... [2019-10-15 03:05:53,306 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:05:53,399 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:05:54,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:54,272 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:05:54,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:05:54,610 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:05:54,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54 WrapperNode [2019-10-15 03:05:54,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:05:54,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:05:54,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:05:54,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:05:54,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54" (1/1) ... [2019-10-15 03:05:54,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54" (1/1) ... [2019-10-15 03:05:54,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54" (1/1) ... [2019-10-15 03:05:54,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54" (1/1) ... [2019-10-15 03:05:54,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54" (1/1) ... [2019-10-15 03:05:54,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54" (1/1) ... [2019-10-15 03:05:54,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54" (1/1) ... [2019-10-15 03:05:54,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:05:54,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:05:54,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:05:54,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:05:54,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54" (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 [2019-10-15 03:05:54,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:05:54,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:05:54,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:05:54,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:05:54,987 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:05:54,988 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:05:54,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-15 03:05:54,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-15 03:05:54,989 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:05:54,990 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:05:54,990 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:05:54,991 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:05:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:05:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:05:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:05:54,992 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:05:54,995 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:05:54,996 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:05:54,996 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:05:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:05:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:05:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:05:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:05:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:05:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:05:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:05:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:05:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:05:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:05:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:05:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:05:54,999 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:05:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:05:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:05:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:05:55,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:05:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:05:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:05:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:05:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:05:55,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:05:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:05:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:05:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:05:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:05:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:05:55,002 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:05:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:05:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:05:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:05:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:05:55,003 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:05:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 03:05:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:05:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:05:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:05:55,004 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:05:55,005 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:05:55,005 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:05:55,006 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:05:55,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:05:55,006 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:05:55,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:05:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:05:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:05:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:05:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:05:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:05:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:05:55,008 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:05:55,008 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:05:55,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:05:55,008 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:05:55,009 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:05:55,009 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:05:55,009 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:05:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:05:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:05:55,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:05:55,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:05:55,011 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:05:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:05:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:05:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:05:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:05:55,012 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:05:55,013 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:05:55,013 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:05:55,014 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:05:55,014 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:05:55,014 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:05:55,014 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:05:55,014 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:05:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:05:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-15 03:05:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:05:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-15 03:05:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:05:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:05:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:05:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:05:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:05:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:05:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:05:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:05:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:05:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:05:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:05:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:05:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:05:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:05:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:05:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:05:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:05:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:05:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:05:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:05:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:05:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:05:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:05:55,021 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:05:55,021 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:05:55,021 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:05:55,022 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:05:55,023 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:05:55,023 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:05:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:05:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:05:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:05:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:05:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:05:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:05:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:05:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:05:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:05:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:05:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:05:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:05:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:05:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:05:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:05:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:05:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:05:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:05:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:05:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:05:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:05:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:05:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:05:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:05:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:05:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:05:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:05:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:05:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:05:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:05:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:05:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:05:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 03:05:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:05:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:05:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:05:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:05:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 03:05:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:05:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:05:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:05:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 03:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:05:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:05:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:05:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:01,200 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:01,201 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:01,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:01 BoogieIcfgContainer [2019-10-15 03:06:01,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:01,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:01,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:01,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:01,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:05:53" (1/3) ... [2019-10-15 03:06:01,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58944fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:01, skipping insertion in model container [2019-10-15 03:06:01,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:54" (2/3) ... [2019-10-15 03:06:01,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58944fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:01, skipping insertion in model container [2019-10-15 03:06:01,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:01" (3/3) ... [2019-10-15 03:06:01,217 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2019-10-15 03:06:01,229 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:01,241 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:01,255 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:01,288 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:01,288 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:01,288 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:01,288 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:01,289 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:01,289 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:01,289 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:01,289 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:01,323 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states. [2019-10-15 03:06:01,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 03:06:01,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:01,341 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:01,343 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:01,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1464723508, now seen corresponding path program 1 times [2019-10-15 03:06:01,360 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:01,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572683443] [2019-10-15 03:06:01,360 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:01,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:01,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:06:02,070 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572683443] [2019-10-15 03:06:02,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595746618] [2019-10-15 03:06:02,071 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 [2019-10-15 03:06:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:02,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-15 03:06:02,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:06:02,897 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:06:03,049 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:03,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-10-15 03:06:03,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090446183] [2019-10-15 03:06:03,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:06:03,056 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:03,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:06:03,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:06:03,074 INFO L87 Difference]: Start difference. First operand 638 states. Second operand 2 states. [2019-10-15 03:06:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:03,212 INFO L93 Difference]: Finished difference Result 1014 states and 1526 transitions. [2019-10-15 03:06:03,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:06:03,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 95 [2019-10-15 03:06:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:03,250 INFO L225 Difference]: With dead ends: 1014 [2019-10-15 03:06:03,251 INFO L226 Difference]: Without dead ends: 515 [2019-10-15 03:06:03,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:06:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2019-10-15 03:06:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2019-10-15 03:06:03,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2019-10-15 03:06:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 759 transitions. [2019-10-15 03:06:03,412 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 759 transitions. Word has length 95 [2019-10-15 03:06:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:03,415 INFO L462 AbstractCegarLoop]: Abstraction has 515 states and 759 transitions. [2019-10-15 03:06:03,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:06:03,416 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 759 transitions. [2019-10-15 03:06:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 03:06:03,437 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:03,437 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:06:03,639 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:03,640 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:03,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:03,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1628114196, now seen corresponding path program 1 times [2019-10-15 03:06:03,641 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:03,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754745930] [2019-10-15 03:06:03,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:03,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:03,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:06:04,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754745930] [2019-10-15 03:06:04,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707865627] [2019-10-15 03:06:04,030 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 [2019-10-15 03:06:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:04,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 03:06:04,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:06:04,786 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:05,063 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:05,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-10-15 03:06:05,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392273804] [2019-10-15 03:06:05,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:05,065 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:05,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:05,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:05,066 INFO L87 Difference]: Start difference. First operand 515 states and 759 transitions. Second operand 4 states. [2019-10-15 03:06:06,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:06,811 INFO L93 Difference]: Finished difference Result 1933 states and 2924 transitions. [2019-10-15 03:06:06,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:06:06,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2019-10-15 03:06:06,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:06,827 INFO L225 Difference]: With dead ends: 1933 [2019-10-15 03:06:06,828 INFO L226 Difference]: Without dead ends: 1455 [2019-10-15 03:06:06,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2019-10-15 03:06:06,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1363. [2019-10-15 03:06:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2019-10-15 03:06:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2069 transitions. [2019-10-15 03:06:06,936 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2069 transitions. Word has length 95 [2019-10-15 03:06:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:06,936 INFO L462 AbstractCegarLoop]: Abstraction has 1363 states and 2069 transitions. [2019-10-15 03:06:06,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2069 transitions. [2019-10-15 03:06:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 03:06:06,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:06,945 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2019-10-15 03:06:07,154 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:07,154 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:07,154 INFO L82 PathProgramCache]: Analyzing trace with hash 2119660925, now seen corresponding path program 1 times [2019-10-15 03:06:07,155 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:07,155 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108203269] [2019-10-15 03:06:07,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:07,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:07,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:06:07,517 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108203269] [2019-10-15 03:06:07,518 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:07,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:06:07,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943379583] [2019-10-15 03:06:07,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:06:07,519 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:07,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:06:07,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:07,520 INFO L87 Difference]: Start difference. First operand 1363 states and 2069 transitions. Second operand 10 states. [2019-10-15 03:06:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:09,503 INFO L93 Difference]: Finished difference Result 2893 states and 4406 transitions. [2019-10-15 03:06:09,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 03:06:09,506 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 142 [2019-10-15 03:06:09,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:09,520 INFO L225 Difference]: With dead ends: 2893 [2019-10-15 03:06:09,520 INFO L226 Difference]: Without dead ends: 1567 [2019-10-15 03:06:09,530 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:06:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2019-10-15 03:06:09,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1559. [2019-10-15 03:06:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2019-10-15 03:06:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2348 transitions. [2019-10-15 03:06:09,647 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2348 transitions. Word has length 142 [2019-10-15 03:06:09,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:09,648 INFO L462 AbstractCegarLoop]: Abstraction has 1559 states and 2348 transitions. [2019-10-15 03:06:09,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:06:09,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2348 transitions. [2019-10-15 03:06:09,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 03:06:09,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:09,657 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2019-10-15 03:06:09,658 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:09,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1983709932, now seen corresponding path program 1 times [2019-10-15 03:06:09,659 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:09,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592724825] [2019-10-15 03:06:09,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:09,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:09,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:06:09,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592724825] [2019-10-15 03:06:09,969 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:09,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:09,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551327833] [2019-10-15 03:06:09,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:09,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:09,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:09,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:09,971 INFO L87 Difference]: Start difference. First operand 1559 states and 2348 transitions. Second operand 7 states. [2019-10-15 03:06:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:16,254 INFO L93 Difference]: Finished difference Result 4343 states and 6610 transitions. [2019-10-15 03:06:16,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:06:16,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-10-15 03:06:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:16,277 INFO L225 Difference]: With dead ends: 4343 [2019-10-15 03:06:16,278 INFO L226 Difference]: Without dead ends: 2824 [2019-10-15 03:06:16,287 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2019-10-15 03:06:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2722. [2019-10-15 03:06:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2722 states. [2019-10-15 03:06:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 4128 transitions. [2019-10-15 03:06:16,431 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 4128 transitions. Word has length 143 [2019-10-15 03:06:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:16,432 INFO L462 AbstractCegarLoop]: Abstraction has 2722 states and 4128 transitions. [2019-10-15 03:06:16,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 4128 transitions. [2019-10-15 03:06:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 03:06:16,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:16,438 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2019-10-15 03:06:16,439 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:16,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:16,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1361981063, now seen corresponding path program 1 times [2019-10-15 03:06:16,439 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:16,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369327606] [2019-10-15 03:06:16,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:16,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:16,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:16,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369327606] [2019-10-15 03:06:16,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147219809] [2019-10-15 03:06:16,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:17,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 3214 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:17,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:17,329 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:17,585 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:17,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2019-10-15 03:06:17,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821895978] [2019-10-15 03:06:17,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:17,586 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:17,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:17,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:17,587 INFO L87 Difference]: Start difference. First operand 2722 states and 4128 transitions. Second operand 4 states. [2019-10-15 03:06:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:17,720 INFO L93 Difference]: Finished difference Result 5455 states and 8432 transitions. [2019-10-15 03:06:17,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:17,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-15 03:06:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:17,746 INFO L225 Difference]: With dead ends: 5455 [2019-10-15 03:06:17,746 INFO L226 Difference]: Without dead ends: 2770 [2019-10-15 03:06:17,765 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2019-10-15 03:06:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2770. [2019-10-15 03:06:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2019-10-15 03:06:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4176 transitions. [2019-10-15 03:06:17,914 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4176 transitions. Word has length 147 [2019-10-15 03:06:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:17,915 INFO L462 AbstractCegarLoop]: Abstraction has 2770 states and 4176 transitions. [2019-10-15 03:06:17,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4176 transitions. [2019-10-15 03:06:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 03:06:17,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:17,920 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1] [2019-10-15 03:06:18,131 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:18,135 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:18,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1842947682, now seen corresponding path program 1 times [2019-10-15 03:06:18,137 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:18,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476203741] [2019-10-15 03:06:18,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:18,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:18,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:06:18,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476203741] [2019-10-15 03:06:18,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417246689] [2019-10-15 03:06:18,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:19,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:06:19,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:06:19,229 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:06:19,586 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:06:19,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2019-10-15 03:06:19,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801462058] [2019-10-15 03:06:19,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:19,588 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:19,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:19,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:19,589 INFO L87 Difference]: Start difference. First operand 2770 states and 4176 transitions. Second operand 5 states. [2019-10-15 03:06:19,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:19,770 INFO L93 Difference]: Finished difference Result 5527 states and 8472 transitions. [2019-10-15 03:06:19,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:19,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2019-10-15 03:06:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:19,793 INFO L225 Difference]: With dead ends: 5527 [2019-10-15 03:06:19,793 INFO L226 Difference]: Without dead ends: 2762 [2019-10-15 03:06:19,810 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:06:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2019-10-15 03:06:19,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2762. [2019-10-15 03:06:19,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2019-10-15 03:06:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4144 transitions. [2019-10-15 03:06:19,948 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4144 transitions. Word has length 149 [2019-10-15 03:06:19,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:19,951 INFO L462 AbstractCegarLoop]: Abstraction has 2762 states and 4144 transitions. [2019-10-15 03:06:19,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4144 transitions. [2019-10-15 03:06:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 03:06:19,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:19,958 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1] [2019-10-15 03:06:20,170 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:20,170 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:20,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:20,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1493364735, now seen corresponding path program 1 times [2019-10-15 03:06:20,171 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:20,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579929434] [2019-10-15 03:06:20,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:20,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:20,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:06:20,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579929434] [2019-10-15 03:06:20,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301683042] [2019-10-15 03:06:20,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:21,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 3223 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:06:21,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:06:21,471 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-15 03:06:21,858 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:21,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2019-10-15 03:06:21,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957988156] [2019-10-15 03:06:21,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:21,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:21,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:21,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:21,860 INFO L87 Difference]: Start difference. First operand 2762 states and 4144 transitions. Second operand 5 states. [2019-10-15 03:06:23,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:23,626 INFO L93 Difference]: Finished difference Result 6991 states and 10932 transitions. [2019-10-15 03:06:23,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:23,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-15 03:06:23,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:23,660 INFO L225 Difference]: With dead ends: 6991 [2019-10-15 03:06:23,660 INFO L226 Difference]: Without dead ends: 4266 [2019-10-15 03:06:23,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 292 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:06:23,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2019-10-15 03:06:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4205. [2019-10-15 03:06:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4205 states. [2019-10-15 03:06:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 6364 transitions. [2019-10-15 03:06:23,901 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 6364 transitions. Word has length 150 [2019-10-15 03:06:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:23,902 INFO L462 AbstractCegarLoop]: Abstraction has 4205 states and 6364 transitions. [2019-10-15 03:06:23,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 6364 transitions. [2019-10-15 03:06:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-15 03:06:23,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:23,910 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1] [2019-10-15 03:06:24,121 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:24,122 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash 407081665, now seen corresponding path program 1 times [2019-10-15 03:06:24,122 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:24,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354655749] [2019-10-15 03:06:24,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:24,123 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:24,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:06:24,354 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354655749] [2019-10-15 03:06:24,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975674635] [2019-10-15 03:06:24,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:25,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 03:06:25,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:06:25,405 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 03:06:25,885 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:25,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2019-10-15 03:06:25,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665297133] [2019-10-15 03:06:25,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:25,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:25,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:25,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:06:25,887 INFO L87 Difference]: Start difference. First operand 4205 states and 6364 transitions. Second operand 7 states.