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_spec14_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:06:19,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:06:19,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:06:19,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:06:19,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:06:19,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:06:19,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:06:19,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:06:19,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:06:19,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:06:19,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:06:19,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:06:19,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:06:19,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:06:19,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:06:19,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:06:19,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:06:19,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:06:19,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:06:19,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:06:19,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:06:19,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:06:19,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:06:19,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:06:19,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:06:19,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:06:19,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:06:19,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:06:19,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:06:19,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:06:19,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:06:19,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:06:19,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:06:19,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:06:19,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:06:19,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:06:19,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:06:19,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:06:19,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:06:19,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:06:19,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:06:19,981 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 03:06:20,017 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:06:20,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:06:20,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:06:20,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:06:20,022 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:06:20,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:06:20,022 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:06:20,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:06:20,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:06:20,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:06:20,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:06:20,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:06:20,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:06:20,027 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:06:20,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:06:20,028 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:06:20,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:06:20,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:06:20,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:06:20,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:06:20,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:06:20,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:20,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:06:20,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:06:20,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:06:20,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:06:20,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:06:20,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:06:20,031 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 [2019-10-15 03:06:20,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:06:20,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:06:20,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:06:20,390 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:06:20,391 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:06:20,392 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product03.cil.c [2019-10-15 03:06:20,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4455ede/11e7f8e0eccb4d2b8cbc52ff95ddd694/FLAG3653e0b82 [2019-10-15 03:06:21,226 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:06:21,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product03.cil.c [2019-10-15 03:06:21,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4455ede/11e7f8e0eccb4d2b8cbc52ff95ddd694/FLAG3653e0b82 [2019-10-15 03:06:21,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba4455ede/11e7f8e0eccb4d2b8cbc52ff95ddd694 [2019-10-15 03:06:21,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:06:21,363 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:06:21,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:21,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:06:21,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:06:21,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:21" (1/1) ... [2019-10-15 03:06:21,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47243856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:21, skipping insertion in model container [2019-10-15 03:06:21,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:21" (1/1) ... [2019-10-15 03:06:21,385 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:06:21,482 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:06:22,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:22,326 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:06:22,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:22,552 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:06:22,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22 WrapperNode [2019-10-15 03:06:22,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:22,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:06:22,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:06:22,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:06:22,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22" (1/1) ... [2019-10-15 03:06:22,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22" (1/1) ... [2019-10-15 03:06:22,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22" (1/1) ... [2019-10-15 03:06:22,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22" (1/1) ... [2019-10-15 03:06:22,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22" (1/1) ... [2019-10-15 03:06:22,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22" (1/1) ... [2019-10-15 03:06:22,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22" (1/1) ... [2019-10-15 03:06:22,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:06:22,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:06:22,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:06:22,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:06:22,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22" (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 03:06:22,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:06:22,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:06:22,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:06:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:06:22,865 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:06:22,866 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:06:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:06:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:06:22,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:06:22,868 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:06:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:06:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:06:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:06:22,869 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:06:22,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:06:22,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:22,873 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:06:22,873 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:06:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:06:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:06:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:06:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:06:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:06:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:06:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:06:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:06:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:06:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:06:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:06:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:06:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:06:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:06:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:06:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:06:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:06:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:06:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:06:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:06:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:06:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:06:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:06:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:06:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:06:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:06:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:06:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:06:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:06:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:06:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:06:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:06:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:06:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:06:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:06:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:06:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:06:22,884 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-10-15 03:06:22,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:06:22,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:06:22,885 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:06:22,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-15 03:06:22,886 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:22,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:06:22,886 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:06:22,886 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:06:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:06:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:06:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:06:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:06:22,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:06:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:06:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:06:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:06:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:06:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:06:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:06:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:06:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:06:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:06:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:06:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:06:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:06:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:06:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:06:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:06:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:06:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:06:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:06:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:06:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:06:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:06:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:06:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:06:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:06:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:06:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:06:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:06:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:06:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:06:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:06:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:06:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:06:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:06:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:06:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:06:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:06:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:06:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:06:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:06:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:06:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:06:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:06:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:06:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:06:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:06:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:06:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:06:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:06:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:06:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:06:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:06:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:06:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:06:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:06:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:06:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:06:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:06:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:06:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:06:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:06:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:06:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:06:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:06:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:06:22,913 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:06:22,914 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:06:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:06:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:06:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:06:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:06:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:06:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:06:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-10-15 03:06:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:06:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:06:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-10-15 03:06:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:06:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:06:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:06:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:06:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:06:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:29,387 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:29,387 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:29,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:29 BoogieIcfgContainer [2019-10-15 03:06:29,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:29,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:29,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:29,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:29,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:21" (1/3) ... [2019-10-15 03:06:29,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487da181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:29, skipping insertion in model container [2019-10-15 03:06:29,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:22" (2/3) ... [2019-10-15 03:06:29,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487da181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:29, skipping insertion in model container [2019-10-15 03:06:29,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:29" (3/3) ... [2019-10-15 03:06:29,398 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product03.cil.c [2019-10-15 03:06:29,409 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:29,421 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:29,433 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:29,465 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:29,466 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:29,466 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:29,466 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:29,466 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:29,466 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:29,467 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:29,467 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:29,504 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states. [2019-10-15 03:06:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-15 03:06:29,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:29,529 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:29,531 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:29,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:29,538 INFO L82 PathProgramCache]: Analyzing trace with hash -809539187, now seen corresponding path program 1 times [2019-10-15 03:06:29,550 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:29,550 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621230888] [2019-10-15 03:06:29,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:29,551 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:29,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:30,663 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 03:06:30,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621230888] [2019-10-15 03:06:30,666 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:30,667 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:30,667 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063263860] [2019-10-15 03:06:30,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:30,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:30,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:30,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:30,697 INFO L87 Difference]: Start difference. First operand 528 states. Second operand 5 states. [2019-10-15 03:06:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:32,237 INFO L93 Difference]: Finished difference Result 1186 states and 1810 transitions. [2019-10-15 03:06:32,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:06:32,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2019-10-15 03:06:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:32,280 INFO L225 Difference]: With dead ends: 1186 [2019-10-15 03:06:32,281 INFO L226 Difference]: Without dead ends: 780 [2019-10-15 03:06:32,297 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:06:32,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2019-10-15 03:06:32,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 773. [2019-10-15 03:06:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2019-10-15 03:06:32,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1170 transitions. [2019-10-15 03:06:32,564 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1170 transitions. Word has length 110 [2019-10-15 03:06:32,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:32,569 INFO L462 AbstractCegarLoop]: Abstraction has 773 states and 1170 transitions. [2019-10-15 03:06:32,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1170 transitions. [2019-10-15 03:06:32,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 03:06:32,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:32,590 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:32,590 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:32,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:32,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1987540519, now seen corresponding path program 1 times [2019-10-15 03:06:32,592 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:32,592 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112296720] [2019-10-15 03:06:32,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:32,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:32,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:33,154 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 03:06:33,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112296720] [2019-10-15 03:06:33,155 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:33,155 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:33,156 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831418187] [2019-10-15 03:06:33,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:33,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:33,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:33,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:33,178 INFO L87 Difference]: Start difference. First operand 773 states and 1170 transitions. Second operand 7 states. [2019-10-15 03:06:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:35,140 INFO L93 Difference]: Finished difference Result 905 states and 1332 transitions. [2019-10-15 03:06:35,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:06:35,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2019-10-15 03:06:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:35,151 INFO L225 Difference]: With dead ends: 905 [2019-10-15 03:06:35,151 INFO L226 Difference]: Without dead ends: 902 [2019-10-15 03:06:35,154 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2019-10-15 03:06:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 894. [2019-10-15 03:06:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2019-10-15 03:06:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1320 transitions. [2019-10-15 03:06:35,225 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1320 transitions. Word has length 114 [2019-10-15 03:06:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:35,226 INFO L462 AbstractCegarLoop]: Abstraction has 894 states and 1320 transitions. [2019-10-15 03:06:35,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1320 transitions. [2019-10-15 03:06:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 03:06:35,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:35,234 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2019-10-15 03:06:35,235 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:35,235 INFO L82 PathProgramCache]: Analyzing trace with hash 388765723, now seen corresponding path program 1 times [2019-10-15 03:06:35,235 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:35,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757951327] [2019-10-15 03:06:35,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:35,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:35,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 03:06:35,617 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757951327] [2019-10-15 03:06:35,617 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:35,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:35,618 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708614056] [2019-10-15 03:06:35,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:35,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:35,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:35,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:35,619 INFO L87 Difference]: Start difference. First operand 894 states and 1320 transitions. Second operand 5 states. [2019-10-15 03:06:35,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:35,697 INFO L93 Difference]: Finished difference Result 1767 states and 2627 transitions. [2019-10-15 03:06:35,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:35,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-15 03:06:35,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:35,706 INFO L225 Difference]: With dead ends: 1767 [2019-10-15 03:06:35,706 INFO L226 Difference]: Without dead ends: 904 [2019-10-15 03:06:35,712 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2019-10-15 03:06:35,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2019-10-15 03:06:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2019-10-15 03:06:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1330 transitions. [2019-10-15 03:06:35,765 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1330 transitions. Word has length 150 [2019-10-15 03:06:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:35,765 INFO L462 AbstractCegarLoop]: Abstraction has 904 states and 1330 transitions. [2019-10-15 03:06:35,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1330 transitions. [2019-10-15 03:06:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 03:06:35,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:35,772 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 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, 1] [2019-10-15 03:06:35,772 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:35,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:35,773 INFO L82 PathProgramCache]: Analyzing trace with hash -146539075, now seen corresponding path program 1 times [2019-10-15 03:06:35,773 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:35,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125191510] [2019-10-15 03:06:35,773 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:35,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:35,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:06:36,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125191510] [2019-10-15 03:06:36,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210017876] [2019-10-15 03:06:36,051 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 03:06:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:36,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:36,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 03:06:36,951 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:06:37,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:37,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:06:37,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368079564] [2019-10-15 03:06:37,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:37,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:37,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:37,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:37,371 INFO L87 Difference]: Start difference. First operand 904 states and 1330 transitions. Second operand 4 states. [2019-10-15 03:06:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:37,747 INFO L93 Difference]: Finished difference Result 1855 states and 2793 transitions. [2019-10-15 03:06:37,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:37,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-10-15 03:06:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:37,760 INFO L225 Difference]: With dead ends: 1855 [2019-10-15 03:06:37,761 INFO L226 Difference]: Without dead ends: 982 [2019-10-15 03:06:37,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:06:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2019-10-15 03:06:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 982. [2019-10-15 03:06:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2019-10-15 03:06:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1476 transitions. [2019-10-15 03:06:37,852 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1476 transitions. Word has length 155 [2019-10-15 03:06:37,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:37,853 INFO L462 AbstractCegarLoop]: Abstraction has 982 states and 1476 transitions. [2019-10-15 03:06:37,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:37,854 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1476 transitions. [2019-10-15 03:06:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 03:06:37,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:37,861 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 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, 1, 1] [2019-10-15 03:06:38,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:38,075 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:38,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:38,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1347898747, now seen corresponding path program 1 times [2019-10-15 03:06:38,076 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:38,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245604815] [2019-10-15 03:06:38,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-15 03:06:38,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245604815] [2019-10-15 03:06:38,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934134668] [2019-10-15 03:06:38,313 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 03:06:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:38,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 2882 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:38,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 03:06:39,021 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-15 03:06:39,322 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:39,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:39,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933933917] [2019-10-15 03:06:39,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:39,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:39,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:39,324 INFO L87 Difference]: Start difference. First operand 982 states and 1476 transitions. Second operand 4 states. [2019-10-15 03:06:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:39,755 INFO L93 Difference]: Finished difference Result 2011 states and 3083 transitions. [2019-10-15 03:06:39,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:39,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-10-15 03:06:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:39,770 INFO L225 Difference]: With dead ends: 2011 [2019-10-15 03:06:39,770 INFO L226 Difference]: Without dead ends: 1060 [2019-10-15 03:06:39,775 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2019-10-15 03:06:39,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1060. [2019-10-15 03:06:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2019-10-15 03:06:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1622 transitions. [2019-10-15 03:06:39,846 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1622 transitions. Word has length 160 [2019-10-15 03:06:39,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:39,847 INFO L462 AbstractCegarLoop]: Abstraction has 1060 states and 1622 transitions. [2019-10-15 03:06:39,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:39,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1622 transitions. [2019-10-15 03:06:39,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 03:06:39,855 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:39,863 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 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, 1, 1, 1] [2019-10-15 03:06:40,076 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:40,077 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:40,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:40,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1791595061, now seen corresponding path program 1 times [2019-10-15 03:06:40,078 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:40,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638294758] [2019-10-15 03:06:40,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,079 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-15 03:06:40,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638294758] [2019-10-15 03:06:40,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587199971] [2019-10-15 03:06:40,414 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 03:06:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:40,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:40,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 03:06:41,164 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-15 03:06:41,443 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:41,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:41,444 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675316878] [2019-10-15 03:06:41,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:41,445 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:41,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:41,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:41,445 INFO L87 Difference]: Start difference. First operand 1060 states and 1622 transitions. Second operand 4 states. [2019-10-15 03:06:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:41,795 INFO L93 Difference]: Finished difference Result 2167 states and 3373 transitions. [2019-10-15 03:06:41,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:41,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-10-15 03:06:41,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:41,808 INFO L225 Difference]: With dead ends: 2167 [2019-10-15 03:06:41,808 INFO L226 Difference]: Without dead ends: 1138 [2019-10-15 03:06:41,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2019-10-15 03:06:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2019-10-15 03:06:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2019-10-15 03:06:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1768 transitions. [2019-10-15 03:06:41,879 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1768 transitions. Word has length 164 [2019-10-15 03:06:41,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:41,879 INFO L462 AbstractCegarLoop]: Abstraction has 1138 states and 1768 transitions. [2019-10-15 03:06:41,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:41,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1768 transitions. [2019-10-15 03:06:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 03:06:41,888 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:41,888 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 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, 1, 1, 1, 1] [2019-10-15 03:06:42,098 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:42,098 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:42,099 INFO L82 PathProgramCache]: Analyzing trace with hash 767809565, now seen corresponding path program 1 times [2019-10-15 03:06:42,099 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:42,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470400019] [2019-10-15 03:06:42,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:42,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:42,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:42,464 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 03:06:42,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470400019] [2019-10-15 03:06:42,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059871187] [2019-10-15 03:06:42,465 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 03:06:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:43,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:43,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 03:06:43,204 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 03:06:43,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:43,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:06:43,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155762663] [2019-10-15 03:06:43,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:43,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:43,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:43,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:43,431 INFO L87 Difference]: Start difference. First operand 1138 states and 1768 transitions. Second operand 4 states. [2019-10-15 03:06:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:43,872 INFO L93 Difference]: Finished difference Result 2323 states and 3663 transitions. [2019-10-15 03:06:43,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:43,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2019-10-15 03:06:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:43,884 INFO L225 Difference]: With dead ends: 2323 [2019-10-15 03:06:43,884 INFO L226 Difference]: Without dead ends: 1216 [2019-10-15 03:06:43,890 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 331 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:06:43,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2019-10-15 03:06:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2019-10-15 03:06:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2019-10-15 03:06:43,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1914 transitions. [2019-10-15 03:06:43,966 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1914 transitions. Word has length 167 [2019-10-15 03:06:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:43,967 INFO L462 AbstractCegarLoop]: Abstraction has 1216 states and 1914 transitions. [2019-10-15 03:06:43,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:43,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1914 transitions. [2019-10-15 03:06:43,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 03:06:43,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:43,974 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:44,191 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:44,192 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:44,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:44,196 INFO L82 PathProgramCache]: Analyzing trace with hash 455444397, now seen corresponding path program 1 times [2019-10-15 03:06:44,196 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:44,197 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057924000] [2019-10-15 03:06:44,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 03:06:44,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057924000] [2019-10-15 03:06:44,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:44,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:06:44,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165040249] [2019-10-15 03:06:44,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:44,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:44,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:44,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:06:44,385 INFO L87 Difference]: Start difference. First operand 1216 states and 1914 transitions. Second operand 4 states. [2019-10-15 03:06:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:44,666 INFO L93 Difference]: Finished difference Result 2485 states and 3951 transitions. [2019-10-15 03:06:44,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:44,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2019-10-15 03:06:44,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:44,674 INFO L225 Difference]: With dead ends: 2485 [2019-10-15 03:06:44,675 INFO L226 Difference]: Without dead ends: 1284 [2019-10-15 03:06:44,680 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2019-10-15 03:06:44,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1284. [2019-10-15 03:06:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2019-10-15 03:06:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1950 transitions. [2019-10-15 03:06:44,766 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1950 transitions. Word has length 169 [2019-10-15 03:06:44,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:44,766 INFO L462 AbstractCegarLoop]: Abstraction has 1284 states and 1950 transitions. [2019-10-15 03:06:44,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1950 transitions. [2019-10-15 03:06:44,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 03:06:44,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:44,773 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:44,773 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:44,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:44,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1600185500, now seen corresponding path program 1 times [2019-10-15 03:06:44,774 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:44,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858399175] [2019-10-15 03:06:44,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 03:06:44,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858399175] [2019-10-15 03:06:44,976 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:44,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:44,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704978530] [2019-10-15 03:06:44,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:44,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:44,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:44,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:44,978 INFO L87 Difference]: Start difference. First operand 1284 states and 1950 transitions. Second operand 7 states. [2019-10-15 03:06:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:46,480 INFO L93 Difference]: Finished difference Result 2733 states and 4190 transitions. [2019-10-15 03:06:46,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:06:46,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2019-10-15 03:06:46,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:46,490 INFO L225 Difference]: With dead ends: 2733 [2019-10-15 03:06:46,490 INFO L226 Difference]: Without dead ends: 1237 [2019-10-15 03:06:46,497 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:06:46,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2019-10-15 03:06:46,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1221. [2019-10-15 03:06:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1221 states. [2019-10-15 03:06:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1770 transitions. [2019-10-15 03:06:46,546 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1770 transitions. Word has length 169 [2019-10-15 03:06:46,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:46,546 INFO L462 AbstractCegarLoop]: Abstraction has 1221 states and 1770 transitions. [2019-10-15 03:06:46,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1770 transitions. [2019-10-15 03:06:46,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 03:06:46,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:46,552 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:46,553 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:46,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:46,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1763584325, now seen corresponding path program 1 times [2019-10-15 03:06:46,553 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:46,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85378538] [2019-10-15 03:06:46,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:46,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 03:06:48,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85378538] [2019-10-15 03:06:48,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339093588] [2019-10-15 03:06:48,774 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 03:06:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:49,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 74 conjunts are in the unsatisfiable core [2019-10-15 03:06:49,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:49,892 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-10-15 03:06:51,619 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2019-10-15 03:06:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-10-15 03:06:52,081 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:52,562 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-15 03:06:52,741 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-10-15 03:06:52,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:52,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:52,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:52,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-15 03:06:52,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:52,925 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:53,408 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 39 [2019-10-15 03:06:54,202 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 43 [2019-10-15 03:06:54,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-15 03:06:54,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,634 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2019-10-15 03:06:54,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,637 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:06:54,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms