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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:45,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:45,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:45,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:45,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:45,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:45,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:45,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:45,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:45,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:45,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:45,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:45,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:45,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:45,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:45,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:45,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:45,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:45,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:45,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:45,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:45,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:45,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:45,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:46,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:46,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:46,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:46,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:46,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:46,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:46,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:46,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:46,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:46,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:46,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:46,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:46,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:46,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:46,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:46,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:46,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:46,010 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 23:04:46,024 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:46,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:46,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:46,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:46,026 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:46,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:46,026 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:46,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:46,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:46,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:46,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:46,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:46,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:46,028 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:46,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:46,028 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:46,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:46,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:46,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:46,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:46,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:46,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:46,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:46,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:46,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:46,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:46,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:46,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:46,031 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 23:04:46,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:46,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:46,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:46,366 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:46,367 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:46,368 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product20.cil.c [2019-10-13 23:04:46,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f743b8c36/9a970059fb4f430aa2ab359d44f054c8/FLAG096712329 [2019-10-13 23:04:47,103 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:47,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product20.cil.c [2019-10-13 23:04:47,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f743b8c36/9a970059fb4f430aa2ab359d44f054c8/FLAG096712329 [2019-10-13 23:04:47,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f743b8c36/9a970059fb4f430aa2ab359d44f054c8 [2019-10-13 23:04:47,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:47,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:47,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:47,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:47,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:47,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:47" (1/1) ... [2019-10-13 23:04:47,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d11f7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:47, skipping insertion in model container [2019-10-13 23:04:47,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:47" (1/1) ... [2019-10-13 23:04:47,366 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:47,452 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:48,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:48,280 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:48,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:48,527 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:48,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48 WrapperNode [2019-10-13 23:04:48,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:48,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:48,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:48,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:48,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48" (1/1) ... [2019-10-13 23:04:48,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48" (1/1) ... [2019-10-13 23:04:48,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48" (1/1) ... [2019-10-13 23:04:48,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48" (1/1) ... [2019-10-13 23:04:48,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48" (1/1) ... [2019-10-13 23:04:48,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48" (1/1) ... [2019-10-13 23:04:48,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48" (1/1) ... [2019-10-13 23:04:48,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:48,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:48,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:48,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:48,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48" (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 23:04:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:48,864 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:48,874 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:48,879 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:48,880 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:04:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:04:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:04:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:48,885 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:48,886 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:04:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:04:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:04:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:04:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:54,303 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:54,303 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:54,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:54 BoogieIcfgContainer [2019-10-13 23:04:54,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:54,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:54,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:54,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:54,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:47" (1/3) ... [2019-10-13 23:04:54,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af20eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:54, skipping insertion in model container [2019-10-13 23:04:54,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48" (2/3) ... [2019-10-13 23:04:54,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af20eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:54, skipping insertion in model container [2019-10-13 23:04:54,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:54" (3/3) ... [2019-10-13 23:04:54,315 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product20.cil.c [2019-10-13 23:04:54,326 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:54,339 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:54,348 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:54,383 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:54,383 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:54,383 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:54,383 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:54,383 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:54,383 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:54,383 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:54,384 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states. [2019-10-13 23:04:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-13 23:04:54,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:54,426 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] [2019-10-13 23:04:54,428 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:54,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1386920768, now seen corresponding path program 1 times [2019-10-13 23:04:54,442 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:54,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59257760] [2019-10-13 23:04:54,443 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:54,443 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:54,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:55,244 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 23:04:55,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59257760] [2019-10-13 23:04:55,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:55,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:04:55,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487384356] [2019-10-13 23:04:55,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:04:55,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:55,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:04:55,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:04:55,273 INFO L87 Difference]: Start difference. First operand 610 states. Second operand 8 states. [2019-10-13 23:04:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:59,003 INFO L93 Difference]: Finished difference Result 1738 states and 2656 transitions. [2019-10-13 23:04:59,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:04:59,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-10-13 23:04:59,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:59,041 INFO L225 Difference]: With dead ends: 1738 [2019-10-13 23:04:59,041 INFO L226 Difference]: Without dead ends: 1256 [2019-10-13 23:04:59,050 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:04:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2019-10-13 23:04:59,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1246. [2019-10-13 23:04:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1246 states. [2019-10-13 23:04:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1856 transitions. [2019-10-13 23:04:59,230 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1856 transitions. Word has length 80 [2019-10-13 23:04:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:59,232 INFO L462 AbstractCegarLoop]: Abstraction has 1246 states and 1856 transitions. [2019-10-13 23:04:59,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:04:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1856 transitions. [2019-10-13 23:04:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:04:59,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:59,246 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 23:04:59,247 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:59,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1331562634, now seen corresponding path program 1 times [2019-10-13 23:04:59,248 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:59,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623692175] [2019-10-13 23:04:59,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:59,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:04:59,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623692175] [2019-10-13 23:04:59,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:59,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:04:59,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555975713] [2019-10-13 23:04:59,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:04:59,732 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:59,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:04:59,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:04:59,733 INFO L87 Difference]: Start difference. First operand 1246 states and 1856 transitions. Second operand 10 states. [2019-10-13 23:05:00,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:00,631 INFO L93 Difference]: Finished difference Result 1274 states and 1890 transitions. [2019-10-13 23:05:00,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:05:00,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2019-10-13 23:05:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:00,658 INFO L225 Difference]: With dead ends: 1274 [2019-10-13 23:05:00,659 INFO L226 Difference]: Without dead ends: 1271 [2019-10-13 23:05:00,663 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2019-10-13 23:05:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1248. [2019-10-13 23:05:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2019-10-13 23:05:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1856 transitions. [2019-10-13 23:05:00,765 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1856 transitions. Word has length 81 [2019-10-13 23:05:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:00,766 INFO L462 AbstractCegarLoop]: Abstraction has 1248 states and 1856 transitions. [2019-10-13 23:05:00,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1856 transitions. [2019-10-13 23:05:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 23:05:00,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:00,768 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] [2019-10-13 23:05:00,768 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:00,769 INFO L82 PathProgramCache]: Analyzing trace with hash 429486188, now seen corresponding path program 1 times [2019-10-13 23:05:00,769 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:00,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845383910] [2019-10-13 23:05:00,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:00,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:00,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:00,970 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 23:05:00,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845383910] [2019-10-13 23:05:00,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:00,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:00,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535413197] [2019-10-13 23:05:00,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:00,973 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:00,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:00,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:00,974 INFO L87 Difference]: Start difference. First operand 1248 states and 1856 transitions. Second operand 3 states. [2019-10-13 23:05:01,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:01,243 INFO L93 Difference]: Finished difference Result 3565 states and 5418 transitions. [2019-10-13 23:05:01,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:01,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-10-13 23:05:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:01,265 INFO L225 Difference]: With dead ends: 3565 [2019-10-13 23:05:01,265 INFO L226 Difference]: Without dead ends: 2348 [2019-10-13 23:05:01,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:01,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-13 23:05:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2280. [2019-10-13 23:05:01,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2019-10-13 23:05:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3419 transitions. [2019-10-13 23:05:01,432 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3419 transitions. Word has length 82 [2019-10-13 23:05:01,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:01,433 INFO L462 AbstractCegarLoop]: Abstraction has 2280 states and 3419 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 2280 states and 3419 transitions. [2019-10-13 23:05:01,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:05:01,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:01,439 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 23:05:01,439 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:01,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1093732194, now seen corresponding path program 1 times [2019-10-13 23:05:01,440 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:01,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484158363] [2019-10-13 23:05:01,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:01,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:01,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:01,871 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 23:05:01,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484158363] [2019-10-13 23:05:01,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609558962] [2019-10-13 23:05:01,872 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 23:05:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:02,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:02,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:02,629 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 23:05:02,630 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:02,724 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 23:05:02,724 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:02,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:02,725 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829464958] [2019-10-13 23:05:02,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:02,726 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:02,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:02,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:02,727 INFO L87 Difference]: Start difference. First operand 2280 states and 3419 transitions. Second operand 3 states. [2019-10-13 23:05:02,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:02,936 INFO L93 Difference]: Finished difference Result 4991 states and 7565 transitions. [2019-10-13 23:05:02,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:02,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-13 23:05:02,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:02,962 INFO L225 Difference]: With dead ends: 4991 [2019-10-13 23:05:02,963 INFO L226 Difference]: Without dead ends: 2742 [2019-10-13 23:05:02,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 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 23:05:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2019-10-13 23:05:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2686. [2019-10-13 23:05:03,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2686 states. [2019-10-13 23:05:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4041 transitions. [2019-10-13 23:05:03,320 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4041 transitions. Word has length 81 [2019-10-13 23:05:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:03,322 INFO L462 AbstractCegarLoop]: Abstraction has 2686 states and 4041 transitions. [2019-10-13 23:05:03,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4041 transitions. [2019-10-13 23:05:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 23:05:03,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:03,333 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:05:03,547 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:03,548 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:03,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:03,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1943590099, now seen corresponding path program 1 times [2019-10-13 23:05:03,549 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:03,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379907658] [2019-10-13 23:05:03,549 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:03,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:05:03,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379907658] [2019-10-13 23:05:03,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068267841] [2019-10-13 23:05:03,937 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 23:05:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:04,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 3557 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:04,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:05:04,852 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:05,054 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-10-13 23:05:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 23:05:05,263 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:05,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 14 [2019-10-13 23:05:05,264 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696316586] [2019-10-13 23:05:05,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:05,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:05,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:05,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:05:05,267 INFO L87 Difference]: Start difference. First operand 2686 states and 4041 transitions. Second operand 3 states. [2019-10-13 23:05:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:05,469 INFO L93 Difference]: Finished difference Result 5814 states and 8869 transitions. [2019-10-13 23:05:05,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:05,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 23:05:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:05,498 INFO L225 Difference]: With dead ends: 5814 [2019-10-13 23:05:05,499 INFO L226 Difference]: Without dead ends: 3159 [2019-10-13 23:05:05,513 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:05:05,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2019-10-13 23:05:05,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 3052. [2019-10-13 23:05:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2019-10-13 23:05:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 4600 transitions. [2019-10-13 23:05:05,727 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 4600 transitions. Word has length 162 [2019-10-13 23:05:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:05,730 INFO L462 AbstractCegarLoop]: Abstraction has 3052 states and 4600 transitions. [2019-10-13 23:05:05,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 4600 transitions. [2019-10-13 23:05:05,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 23:05:05,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:05,739 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:05,952 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:05,952 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:05,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:05,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1427492217, now seen corresponding path program 1 times [2019-10-13 23:05:05,953 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:05,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567287336] [2019-10-13 23:05:05,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:05,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:05,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:05:06,216 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567287336] [2019-10-13 23:05:06,216 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:06,216 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:05:06,217 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662593097] [2019-10-13 23:05:06,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:05:06,217 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:06,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:05:06,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:05:06,218 INFO L87 Difference]: Start difference. First operand 3052 states and 4600 transitions. Second operand 7 states. [2019-10-13 23:05:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:09,461 INFO L93 Difference]: Finished difference Result 11363 states and 17657 transitions. [2019-10-13 23:05:09,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:05:09,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2019-10-13 23:05:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:09,563 INFO L225 Difference]: With dead ends: 11363 [2019-10-13 23:05:09,563 INFO L226 Difference]: Without dead ends: 8342 [2019-10-13 23:05:09,593 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 23:05:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2019-10-13 23:05:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 8179. [2019-10-13 23:05:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8179 states. [2019-10-13 23:05:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8179 states to 8179 states and 12572 transitions. [2019-10-13 23:05:10,221 INFO L78 Accepts]: Start accepts. Automaton has 8179 states and 12572 transitions. Word has length 129 [2019-10-13 23:05:10,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:10,221 INFO L462 AbstractCegarLoop]: Abstraction has 8179 states and 12572 transitions. [2019-10-13 23:05:10,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:05:10,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8179 states and 12572 transitions. [2019-10-13 23:05:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 23:05:10,230 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:10,230 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:05:10,231 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:10,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:10,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2030282810, now seen corresponding path program 1 times [2019-10-13 23:05:10,232 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:10,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874058345] [2019-10-13 23:05:10,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:05:10,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874058345] [2019-10-13 23:05:10,595 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:10,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:05:10,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004200385] [2019-10-13 23:05:10,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:05:10,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:10,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:05:10,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:05:10,598 INFO L87 Difference]: Start difference. First operand 8179 states and 12572 transitions. Second operand 10 states. [2019-10-13 23:05:12,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:12,473 INFO L93 Difference]: Finished difference Result 18205 states and 28165 transitions. [2019-10-13 23:05:12,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:05:12,473 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2019-10-13 23:05:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:12,548 INFO L225 Difference]: With dead ends: 18205 [2019-10-13 23:05:12,548 INFO L226 Difference]: Without dead ends: 10057 [2019-10-13 23:05:12,593 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 [2019-10-13 23:05:12,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10057 states. [2019-10-13 23:05:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10057 to 10019. [2019-10-13 23:05:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10019 states. [2019-10-13 23:05:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10019 states to 10019 states and 15315 transitions. [2019-10-13 23:05:13,191 INFO L78 Accepts]: Start accepts. Automaton has 10019 states and 15315 transitions. Word has length 134 [2019-10-13 23:05:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:13,195 INFO L462 AbstractCegarLoop]: Abstraction has 10019 states and 15315 transitions. [2019-10-13 23:05:13,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:13,195 INFO L276 IsEmpty]: Start isEmpty. Operand 10019 states and 15315 transitions. [2019-10-13 23:05:13,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 23:05:13,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:13,201 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:05:13,201 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:13,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:13,202 INFO L82 PathProgramCache]: Analyzing trace with hash -898327861, now seen corresponding path program 1 times [2019-10-13 23:05:13,203 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:13,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499628131] [2019-10-13 23:05:13,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:13,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:13,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2019-10-13 23:05:13,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499628131] [2019-10-13 23:05:13,480 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463079022] [2019-10-13 23:05:13,481 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 [2019-10-13 23:05:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:14,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 3907 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 23:05:14,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 23:05:14,553 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:14,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2019-10-13 23:05:15,107 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:15,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2019-10-13 23:05:15,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751191039] [2019-10-13 23:05:15,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:05:15,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:15,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:05:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2019-10-13 23:05:15,110 INFO L87 Difference]: Start difference. First operand 10019 states and 15315 transitions. Second operand 9 states.