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_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:26:47,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:26:47,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:26:47,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:26:47,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:26:47,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:26:47,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:26:47,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:26:47,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:26:47,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:26:47,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:26:47,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:26:47,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:26:47,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:26:47,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:26:47,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:26:47,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:26:47,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:26:47,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:26:47,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:26:47,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:26:47,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:26:47,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:26:47,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:26:47,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:26:47,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:26:47,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:26:47,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:26:47,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:26:47,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:26:47,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:26:47,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:26:47,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:26:47,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:26:47,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:26:47,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:26:47,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:26:47,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:26:47,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:26:47,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:26:47,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:26:47,166 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 [2019-10-07 14:26:47,180 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:26:47,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:26:47,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:26:47,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:26:47,182 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:26:47,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:26:47,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:26:47,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:26:47,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:26:47,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:26:47,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:26:47,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:26:47,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:26:47,184 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:26:47,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:26:47,184 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:26:47,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:26:47,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:26:47,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:26:47,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:26:47,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:26:47,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:26:47,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:26:47,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:26:47,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:26:47,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:26:47,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:26:47,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:26:47,187 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 [2019-10-07 14:26:47,465 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:26:47,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:26:47,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:26:47,484 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:26:47,484 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:26:47,485 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-10-07 14:26:47,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fb53b435/52edd9751d6e4fa39f87dc6ca43ab7ce/FLAGcc1286759 [2019-10-07 14:26:48,208 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:26:48,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-10-07 14:26:48,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fb53b435/52edd9751d6e4fa39f87dc6ca43ab7ce/FLAGcc1286759 [2019-10-07 14:26:48,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fb53b435/52edd9751d6e4fa39f87dc6ca43ab7ce [2019-10-07 14:26:48,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:26:48,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:26:48,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:26:48,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:26:48,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:26:48,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:26:48" (1/1) ... [2019-10-07 14:26:48,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443ffe5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:48, skipping insertion in model container [2019-10-07 14:26:48,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:26:48" (1/1) ... [2019-10-07 14:26:48,411 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:26:48,481 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:26:49,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:26:49,185 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:26:49,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:26:49,469 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:26:49,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49 WrapperNode [2019-10-07 14:26:49,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:26:49,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:26:49,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:26:49,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:26:49,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49" (1/1) ... [2019-10-07 14:26:49,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49" (1/1) ... [2019-10-07 14:26:49,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49" (1/1) ... [2019-10-07 14:26:49,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49" (1/1) ... [2019-10-07 14:26:49,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49" (1/1) ... [2019-10-07 14:26:49,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49" (1/1) ... [2019-10-07 14:26:49,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49" (1/1) ... [2019-10-07 14:26:49,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:26:49,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:26:49,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:26:49,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:26:49,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49" (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 [2019-10-07 14:26:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:26:49,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:26:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:26:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:26:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:26:49,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:26:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:26:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:26:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:26:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:26:49,758 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:26:49,758 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:26:49,758 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:26:49,758 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:26:49,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:26:49,759 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:26:49,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:26:49,759 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:26:49,759 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:26:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:26:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:26:49,760 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:26:49,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:26:49,761 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 14:26:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 14:26:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:26:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:26:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:26:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 14:26:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 14:26:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:26:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:26:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:26:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:26:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:26:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:26:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:26:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:26:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:26:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:26:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:26:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:26:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:26:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:26:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:26:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:26:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:26:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:26:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:26:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:26:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:26:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:26:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:26:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:26:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:26:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:26:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:26:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:26:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:26:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:26:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:26:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:26:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:26:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:26:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:26:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:26:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:26:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:26:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:26:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:26:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:26:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:26:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:26:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:26:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:26:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:26:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:26:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:26:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:26:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:26:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:26:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:26:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:26:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:26:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:26:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:26:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:26:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:26:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:26:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:26:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:26:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:26:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:26:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:26:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:26:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:26:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:26:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:26:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:26:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:26:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:26:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:26:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:26:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:26:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:26:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:26:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:26:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:26:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:26:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:26:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:26:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:26:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:26:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:26:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:26:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:26:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:26:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-07 14:26:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 14:26:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:26:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:26:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-07 14:26:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 14:26:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:26:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:26:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:26:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:26:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:26:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:26:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:26:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:26:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:26:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:26:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:26:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:26:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:26:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:26:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:26:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:26:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:26:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:26:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:26:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:26:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:26:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:26:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:26:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:26:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:26:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:26:49,787 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:26:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:26:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:26:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:26:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:26:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:26:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:26:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:26:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:26:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:26:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:26:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:26:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:26:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:26:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:26:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:26:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:26:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:26:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:26:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:26:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:26:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:26:54,985 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:26:54,985 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:26:54,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:26:54 BoogieIcfgContainer [2019-10-07 14:26:54,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:26:54,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:26:54,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:26:54,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:26:54,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:26:48" (1/3) ... [2019-10-07 14:26:54,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46af9040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:26:54, skipping insertion in model container [2019-10-07 14:26:54,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:26:49" (2/3) ... [2019-10-07 14:26:54,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46af9040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:26:54, skipping insertion in model container [2019-10-07 14:26:54,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:26:54" (3/3) ... [2019-10-07 14:26:54,995 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2019-10-07 14:26:55,005 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:26:55,014 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:26:55,027 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:26:55,060 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:26:55,060 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:26:55,060 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:26:55,060 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:26:55,060 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:26:55,061 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:26:55,061 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:26:55,061 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:26:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states. [2019-10-07 14:26:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-07 14:26:55,124 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:55,127 INFO L385 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] [2019-10-07 14:26:55,132 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:55,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1194994142, now seen corresponding path program 1 times [2019-10-07 14:26:55,147 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:55,147 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:55,147 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:55,147 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:26:56,009 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:56,009 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:56,010 INFO L95 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 [2019-10-07 14:26:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:56,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:26:56,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:26:56,770 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:26:56,931 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:26:56,931 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-07 14:26:56,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:26:56,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:26:56,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:26:56,954 INFO L87 Difference]: Start difference. First operand 618 states. Second operand 3 states. [2019-10-07 14:26:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:57,201 INFO L93 Difference]: Finished difference Result 1376 states and 2085 transitions. [2019-10-07 14:26:57,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:26:57,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-10-07 14:26:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:57,249 INFO L225 Difference]: With dead ends: 1376 [2019-10-07 14:26:57,249 INFO L226 Difference]: Without dead ends: 890 [2019-10-07 14:26:57,263 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:26:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-10-07 14:26:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 877. [2019-10-07 14:26:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-10-07 14:26:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1312 transitions. [2019-10-07 14:26:57,414 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1312 transitions. Word has length 118 [2019-10-07 14:26:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:57,415 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 1312 transitions. [2019-10-07 14:26:57,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:26:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1312 transitions. [2019-10-07 14:26:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:26:57,426 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:57,427 INFO L385 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] [2019-10-07 14:26:57,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:57,636 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:57,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:57,636 INFO L82 PathProgramCache]: Analyzing trace with hash -710931633, now seen corresponding path program 1 times [2019-10-07 14:26:57,637 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:57,638 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:57,638 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:57,639 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:26:57,935 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:57,936 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:26:57,936 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:26:57,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:26:57,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:26:57,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:26:57,939 INFO L87 Difference]: Start difference. First operand 877 states and 1312 transitions. Second operand 7 states. [2019-10-07 14:27:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:00,997 INFO L93 Difference]: Finished difference Result 3352 states and 5172 transitions. [2019-10-07 14:27:00,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:27:00,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-07 14:27:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:01,023 INFO L225 Difference]: With dead ends: 3352 [2019-10-07 14:27:01,023 INFO L226 Difference]: Without dead ends: 2506 [2019-10-07 14:27:01,034 INFO L606 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 [2019-10-07 14:27:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2019-10-07 14:27:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2431. [2019-10-07 14:27:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2019-10-07 14:27:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3734 transitions. [2019-10-07 14:27:01,204 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3734 transitions. Word has length 119 [2019-10-07 14:27:01,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:01,205 INFO L462 AbstractCegarLoop]: Abstraction has 2431 states and 3734 transitions. [2019-10-07 14:27:01,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:27:01,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3734 transitions. [2019-10-07 14:27:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:27:01,216 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:01,216 INFO L385 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] [2019-10-07 14:27:01,216 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:01,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:01,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2044796583, now seen corresponding path program 1 times [2019-10-07 14:27:01,217 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:01,217 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:01,217 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:01,217 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:01,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:27:01,507 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:01,507 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:01,507 INFO L95 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 [2019-10-07 14:27:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:02,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:27:02,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:27:02,180 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:27:02,319 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:27:02,320 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-10-07 14:27:02,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:27:02,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:27:02,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:02,322 INFO L87 Difference]: Start difference. First operand 2431 states and 3734 transitions. Second operand 4 states. [2019-10-07 14:27:02,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:02,511 INFO L93 Difference]: Finished difference Result 4648 states and 7207 transitions. [2019-10-07 14:27:02,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:27:02,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-07 14:27:02,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:02,531 INFO L225 Difference]: With dead ends: 4648 [2019-10-07 14:27:02,531 INFO L226 Difference]: Without dead ends: 2248 [2019-10-07 14:27:02,548 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:02,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2019-10-07 14:27:02,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2198. [2019-10-07 14:27:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2019-10-07 14:27:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 3341 transitions. [2019-10-07 14:27:02,703 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 3341 transitions. Word has length 120 [2019-10-07 14:27:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:02,704 INFO L462 AbstractCegarLoop]: Abstraction has 2198 states and 3341 transitions. [2019-10-07 14:27:02,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:27:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 3341 transitions. [2019-10-07 14:27:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:27:02,711 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:02,711 INFO L385 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] [2019-10-07 14:27:02,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:02,921 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:02,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:02,922 INFO L82 PathProgramCache]: Analyzing trace with hash 604184811, now seen corresponding path program 1 times [2019-10-07 14:27:02,922 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:02,922 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:02,923 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:02,923 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:27:03,153 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:03,153 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:03,153 INFO L95 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 [2019-10-07 14:27:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:03,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:27:03,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:27:03,811 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:27:03,953 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:27:03,953 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-10-07 14:27:03,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:27:03,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:27:03,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:27:03,955 INFO L87 Difference]: Start difference. First operand 2198 states and 3341 transitions. Second operand 3 states. [2019-10-07 14:27:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:04,130 INFO L93 Difference]: Finished difference Result 5514 states and 8531 transitions. [2019-10-07 14:27:04,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:27:04,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-07 14:27:04,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:04,162 INFO L225 Difference]: With dead ends: 5514 [2019-10-07 14:27:04,162 INFO L226 Difference]: Without dead ends: 3347 [2019-10-07 14:27:04,177 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:27:04,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2019-10-07 14:27:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3262. [2019-10-07 14:27:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3262 states. [2019-10-07 14:27:04,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4986 transitions. [2019-10-07 14:27:04,346 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4986 transitions. Word has length 119 [2019-10-07 14:27:04,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:04,346 INFO L462 AbstractCegarLoop]: Abstraction has 3262 states and 4986 transitions. [2019-10-07 14:27:04,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:27:04,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4986 transitions. [2019-10-07 14:27:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:27:04,353 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:04,354 INFO L385 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] [2019-10-07 14:27:04,561 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:04,562 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:04,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:04,562 INFO L82 PathProgramCache]: Analyzing trace with hash 979559282, now seen corresponding path program 1 times [2019-10-07 14:27:04,562 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:04,562 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:04,563 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:04,563 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:27:04,891 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:04,891 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:04,891 INFO L95 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 [2019-10-07 14:27:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:05,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:27:05,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:27:05,586 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:05,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:27:05,877 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:05,878 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-07 14:27:05,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:27:05,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:27:05,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:27:05,879 INFO L87 Difference]: Start difference. First operand 3262 states and 4986 transitions. Second operand 6 states. [2019-10-07 14:27:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:07,593 INFO L93 Difference]: Finished difference Result 8600 states and 13448 transitions. [2019-10-07 14:27:07,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:27:07,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-07 14:27:07,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:07,640 INFO L225 Difference]: With dead ends: 8600 [2019-10-07 14:27:07,640 INFO L226 Difference]: Without dead ends: 5369 [2019-10-07 14:27:07,670 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:27:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5369 states. [2019-10-07 14:27:07,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5369 to 5333. [2019-10-07 14:27:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5333 states. [2019-10-07 14:27:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 8047 transitions. [2019-10-07 14:27:07,932 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 8047 transitions. Word has length 120 [2019-10-07 14:27:07,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:07,933 INFO L462 AbstractCegarLoop]: Abstraction has 5333 states and 8047 transitions. [2019-10-07 14:27:07,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:27:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 8047 transitions. [2019-10-07 14:27:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:27:07,936 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:07,937 INFO L385 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] [2019-10-07 14:27:08,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:08,145 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:08,145 INFO L82 PathProgramCache]: Analyzing trace with hash 20604644, now seen corresponding path program 1 times [2019-10-07 14:27:08,146 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:08,146 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:08,146 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:08,146 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:08,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 14:27:08,395 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:08,396 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:27:08,396 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:27:08,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:27:08,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:27:08,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:08,400 INFO L87 Difference]: Start difference. First operand 5333 states and 8047 transitions. Second operand 10 states. [2019-10-07 14:27:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:11,732 INFO L93 Difference]: Finished difference Result 18854 states and 29437 transitions. [2019-10-07 14:27:11,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 14:27:11,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-07 14:27:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:11,896 INFO L225 Difference]: With dead ends: 18854 [2019-10-07 14:27:11,896 INFO L226 Difference]: Without dead ends: 13552 [2019-10-07 14:27:11,965 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-07 14:27:11,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13552 states. [2019-10-07 14:27:12,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13552 to 13397. [2019-10-07 14:27:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13397 states. [2019-10-07 14:27:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 20653 transitions. [2019-10-07 14:27:12,763 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 20653 transitions. Word has length 125 [2019-10-07 14:27:12,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:12,764 INFO L462 AbstractCegarLoop]: Abstraction has 13397 states and 20653 transitions. [2019-10-07 14:27:12,764 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:27:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 20653 transitions. [2019-10-07 14:27:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-07 14:27:12,768 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:12,768 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:27:12,769 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:12,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:12,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1489652305, now seen corresponding path program 1 times [2019-10-07 14:27:12,769 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:12,770 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:12,770 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:12,770 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:27:12,977 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:12,977 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:12,977 INFO L95 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 [2019-10-07 14:27:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:13,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-07 14:27:13,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-07 14:27:13,686 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:27:13,911 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:13,911 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-07 14:27:13,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:27:13,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:27:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:27:13,913 INFO L87 Difference]: Start difference. First operand 13397 states and 20653 transitions. Second operand 7 states. [2019-10-07 14:27:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:17,283 INFO L93 Difference]: Finished difference Result 28266 states and 43618 transitions. [2019-10-07 14:27:17,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:27:17,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-07 14:27:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:17,386 INFO L225 Difference]: With dead ends: 28266 [2019-10-07 14:27:17,386 INFO L226 Difference]: Without dead ends: 14900 [2019-10-07 14:27:17,438 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:27:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14900 states. [2019-10-07 14:27:18,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14900 to 14853. [2019-10-07 14:27:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14853 states. [2019-10-07 14:27:18,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14853 states to 14853 states and 22650 transitions. [2019-10-07 14:27:18,203 INFO L78 Accepts]: Start accepts. Automaton has 14853 states and 22650 transitions. Word has length 131 [2019-10-07 14:27:18,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:18,205 INFO L462 AbstractCegarLoop]: Abstraction has 14853 states and 22650 transitions. [2019-10-07 14:27:18,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:27:18,206 INFO L276 IsEmpty]: Start isEmpty. Operand 14853 states and 22650 transitions. [2019-10-07 14:27:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-07 14:27:18,210 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:18,214 INFO L385 BasicCegarLoop]: trace histogram [4, 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] [2019-10-07 14:27:18,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:18,423 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:18,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:18,423 INFO L82 PathProgramCache]: Analyzing trace with hash -797822282, now seen corresponding path program 1 times [2019-10-07 14:27:18,423 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:18,424 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:18,424 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:18,424 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-07 14:27:18,808 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:18,808 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:27:18,808 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:27:18,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:27:18,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:27:18,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:27:18,810 INFO L87 Difference]: Start difference. First operand 14853 states and 22650 transitions. Second operand 14 states. [2019-10-07 14:27:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:29,628 INFO L93 Difference]: Finished difference Result 37680 states and 58733 transitions. [2019-10-07 14:27:29,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-07 14:27:29,628 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2019-10-07 14:27:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:29,817 INFO L225 Difference]: With dead ends: 37680 [2019-10-07 14:27:29,818 INFO L226 Difference]: Without dead ends: 26425 [2019-10-07 14:27:29,885 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2019-10-07 14:27:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26425 states. [2019-10-07 14:27:31,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26425 to 25845. [2019-10-07 14:27:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25845 states. [2019-10-07 14:27:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25845 states to 25845 states and 39852 transitions. [2019-10-07 14:27:31,243 INFO L78 Accepts]: Start accepts. Automaton has 25845 states and 39852 transitions. Word has length 140 [2019-10-07 14:27:31,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:31,244 INFO L462 AbstractCegarLoop]: Abstraction has 25845 states and 39852 transitions. [2019-10-07 14:27:31,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:27:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 25845 states and 39852 transitions. [2019-10-07 14:27:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-07 14:27:31,250 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:31,250 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:27:31,251 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:31,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:31,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1841763937, now seen corresponding path program 1 times [2019-10-07 14:27:31,251 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:31,251 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:31,251 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:31,252 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:27:31,472 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:31,472 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:27:31,472 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:27:31,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:27:31,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:27:31,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:27:31,474 INFO L87 Difference]: Start difference. First operand 25845 states and 39852 transitions. Second operand 8 states. [2019-10-07 14:27:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:32,941 INFO L93 Difference]: Finished difference Result 37255 states and 57598 transitions. [2019-10-07 14:27:32,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:27:32,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 167 [2019-10-07 14:27:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:33,090 INFO L225 Difference]: With dead ends: 37255 [2019-10-07 14:27:33,090 INFO L226 Difference]: Without dead ends: 25933 [2019-10-07 14:27:33,162 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:27:33,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25933 states. [2019-10-07 14:27:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25933 to 25887. [2019-10-07 14:27:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25887 states. [2019-10-07 14:27:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25887 states to 25887 states and 39880 transitions. [2019-10-07 14:27:34,388 INFO L78 Accepts]: Start accepts. Automaton has 25887 states and 39880 transitions. Word has length 167 [2019-10-07 14:27:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:34,389 INFO L462 AbstractCegarLoop]: Abstraction has 25887 states and 39880 transitions. [2019-10-07 14:27:34,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:27:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 25887 states and 39880 transitions. [2019-10-07 14:27:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-07 14:27:34,395 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:34,396 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:27:34,396 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:34,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2031208701, now seen corresponding path program 1 times [2019-10-07 14:27:34,397 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:34,397 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:34,397 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:34,397 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:27:34,691 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:34,691 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:27:34,692 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:27:34,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:27:34,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:27:34,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:27:34,693 INFO L87 Difference]: Start difference. First operand 25887 states and 39880 transitions. Second operand 14 states. [2019-10-07 14:27:48,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:48,975 INFO L93 Difference]: Finished difference Result 53741 states and 87845 transitions. [2019-10-07 14:27:48,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-07 14:27:48,977 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 171 [2019-10-07 14:27:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:49,316 INFO L225 Difference]: With dead ends: 53741 [2019-10-07 14:27:49,316 INFO L226 Difference]: Without dead ends: 53710 [2019-10-07 14:27:49,352 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=238, Invalid=1654, Unknown=0, NotChecked=0, Total=1892 [2019-10-07 14:27:49,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53710 states. [2019-10-07 14:27:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53710 to 52179. [2019-10-07 14:27:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52179 states. [2019-10-07 14:27:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52179 states to 52179 states and 83725 transitions. [2019-10-07 14:27:52,066 INFO L78 Accepts]: Start accepts. Automaton has 52179 states and 83725 transitions. Word has length 171 [2019-10-07 14:27:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:52,067 INFO L462 AbstractCegarLoop]: Abstraction has 52179 states and 83725 transitions. [2019-10-07 14:27:52,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:27:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 52179 states and 83725 transitions. [2019-10-07 14:27:52,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-07 14:27:52,079 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:52,079 INFO L385 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 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, 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] [2019-10-07 14:27:52,079 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:52,080 INFO L82 PathProgramCache]: Analyzing trace with hash 461906373, now seen corresponding path program 1 times [2019-10-07 14:27:52,080 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:52,080 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:52,080 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:52,080 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-10-07 14:27:52,305 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:52,305 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:52,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 3463 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:27:52,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:27:53,150 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:53,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-10-07 14:27:53,737 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:53,738 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:27:53,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:27:53,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:27:53,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:27:53,744 INFO L87 Difference]: Start difference. First operand 52179 states and 83725 transitions. Second operand 9 states. [2019-10-07 14:28:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:05,214 INFO L93 Difference]: Finished difference Result 130080 states and 211565 transitions. [2019-10-07 14:28:05,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:28:05,215 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2019-10-07 14:28:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:05,751 INFO L225 Difference]: With dead ends: 130080 [2019-10-07 14:28:05,751 INFO L226 Difference]: Without dead ends: 77932 [2019-10-07 14:28:05,944 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 392 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:28:06,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77932 states. [2019-10-07 14:28:11,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77932 to 76672. [2019-10-07 14:28:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76672 states. [2019-10-07 14:28:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76672 states to 76672 states and 123765 transitions. [2019-10-07 14:28:12,190 INFO L78 Accepts]: Start accepts. Automaton has 76672 states and 123765 transitions. Word has length 201 [2019-10-07 14:28:12,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:12,190 INFO L462 AbstractCegarLoop]: Abstraction has 76672 states and 123765 transitions. [2019-10-07 14:28:12,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:28:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 76672 states and 123765 transitions. [2019-10-07 14:28:12,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-07 14:28:12,204 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:12,205 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:12,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:12,413 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:12,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1576575512, now seen corresponding path program 1 times [2019-10-07 14:28:12,414 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:12,414 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:12,414 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:12,414 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-10-07 14:28:12,641 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:12,641 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:13,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 3506 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:28:13,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:28:13,401 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-10-07 14:28:13,652 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:28:13,652 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:28:13,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:28:13,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:28:13,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:28:13,654 INFO L87 Difference]: Start difference. First operand 76672 states and 123765 transitions. Second operand 3 states. [2019-10-07 14:28:17,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:17,005 INFO L93 Difference]: Finished difference Result 159435 states and 259303 transitions. [2019-10-07 14:28:17,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:28:17,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-10-07 14:28:17,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:17,510 INFO L225 Difference]: With dead ends: 159435 [2019-10-07 14:28:17,510 INFO L226 Difference]: Without dead ends: 82794 [2019-10-07 14:28:17,766 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:28:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82794 states. [2019-10-07 14:28:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82794 to 82053. [2019-10-07 14:28:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82053 states. [2019-10-07 14:28:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82053 states to 82053 states and 132002 transitions. [2019-10-07 14:28:24,274 INFO L78 Accepts]: Start accepts. Automaton has 82053 states and 132002 transitions. Word has length 214 [2019-10-07 14:28:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:24,275 INFO L462 AbstractCegarLoop]: Abstraction has 82053 states and 132002 transitions. [2019-10-07 14:28:24,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:28:24,275 INFO L276 IsEmpty]: Start isEmpty. Operand 82053 states and 132002 transitions. [2019-10-07 14:28:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-07 14:28:24,294 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:24,295 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:24,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:24,509 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:24,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1717071374, now seen corresponding path program 1 times [2019-10-07 14:28:24,509 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:24,509 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:24,509 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:24,509 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-10-07 14:28:24,743 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:24,743 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:25,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 3521 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-07 14:28:25,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:28:25,606 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-07 14:28:26,056 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:28:26,056 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 10] total 18 [2019-10-07 14:28:26,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:28:26,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:28:26,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-10-07 14:28:26,057 INFO L87 Difference]: Start difference. First operand 82053 states and 132002 transitions. Second operand 9 states. [2019-10-07 14:28:33,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:33,540 INFO L93 Difference]: Finished difference Result 191658 states and 309742 transitions. [2019-10-07 14:28:33,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:28:33,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2019-10-07 14:28:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:34,188 INFO L225 Difference]: With dead ends: 191658 [2019-10-07 14:28:34,188 INFO L226 Difference]: Without dead ends: 132876 [2019-10-07 14:28:34,415 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:28:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132876 states. [2019-10-07 14:28:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132876 to 126379. [2019-10-07 14:28:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126379 states. [2019-10-07 14:28:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126379 states to 126379 states and 203612 transitions. [2019-10-07 14:28:39,611 INFO L78 Accepts]: Start accepts. Automaton has 126379 states and 203612 transitions. Word has length 219 [2019-10-07 14:28:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:39,611 INFO L462 AbstractCegarLoop]: Abstraction has 126379 states and 203612 transitions. [2019-10-07 14:28:39,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:28:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 126379 states and 203612 transitions. [2019-10-07 14:28:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-07 14:28:39,626 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:39,626 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:39,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:39,835 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:39,836 INFO L82 PathProgramCache]: Analyzing trace with hash 661415785, now seen corresponding path program 1 times [2019-10-07 14:28:39,836 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:39,836 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:39,837 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:39,837 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-10-07 14:28:40,194 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:40,195 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:40,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 3522 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-07 14:28:40,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-07 14:28:41,008 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-07 14:28:41,400 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:28:41,400 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17, 8] total 23 [2019-10-07 14:28:41,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:28:41,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:28:41,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:28:41,401 INFO L87 Difference]: Start difference. First operand 126379 states and 203612 transitions. Second operand 8 states. [2019-10-07 14:28:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:48,836 INFO L93 Difference]: Finished difference Result 179905 states and 291397 transitions. [2019-10-07 14:28:48,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:28:48,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2019-10-07 14:28:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:49,273 INFO L225 Difference]: With dead ends: 179905 [2019-10-07 14:28:49,273 INFO L226 Difference]: Without dead ends: 92773 [2019-10-07 14:28:49,481 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2019-10-07 14:28:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92773 states. [2019-10-07 14:28:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92773 to 92686. [2019-10-07 14:28:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92686 states. [2019-10-07 14:28:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92686 states to 92686 states and 149532 transitions. [2019-10-07 14:28:52,950 INFO L78 Accepts]: Start accepts. Automaton has 92686 states and 149532 transitions. Word has length 221 [2019-10-07 14:28:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:52,951 INFO L462 AbstractCegarLoop]: Abstraction has 92686 states and 149532 transitions. [2019-10-07 14:28:52,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:28:52,951 INFO L276 IsEmpty]: Start isEmpty. Operand 92686 states and 149532 transitions. [2019-10-07 14:28:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-07 14:28:52,977 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:52,977 INFO L385 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2019-10-07 14:28:53,186 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:53,187 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:53,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1401336211, now seen corresponding path program 1 times [2019-10-07 14:28:53,188 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:53,189 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:53,189 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:53,189 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-10-07 14:28:53,807 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:53,808 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:54,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 3551 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:28:54,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 140 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 14:28:54,879 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:55,311 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:28:55,828 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:28:56,283 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:28:56,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:56,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:56,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:56,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:56,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:56,415 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-10-07 14:28:56,415 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:28:56,445 INFO L162 IcfgInterpreter]: Started Sifa with 132 locations of interest [2019-10-07 14:28:56,445 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:28:56,451 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:28:56,459 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:28:56,459 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:29:35,204 WARN L191 SmtUtils]: Spent 3.38 s on a formula simplification that was a NOOP. DAG size: 756 [2019-10-07 14:29:40,026 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:29:40,439 WARN L191 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:29:40,838 WARN L191 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:29:41,161 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:29:41,870 WARN L191 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:29:42,350 WARN L191 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:29:42,797 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:29:43,305 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:29:44,396 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 1026 DAG size of output: 1024 [2019-10-07 14:29:44,831 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:29:45,325 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:29:45,762 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:29:46,220 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:29:46,734 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:29:46,752 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 379 for LOIs [2019-10-07 14:29:47,019 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:29:47,167 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:29:47,511 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 907 [2019-10-07 14:29:47,512 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1070 for LOIs [2019-10-07 14:29:47,938 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:48,373 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:48,491 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:49,201 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:49,651 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:50,082 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:50,197 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:50,907 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:51,368 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:51,795 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:52,045 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:52,812 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:53,575 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 1230 DAG size of output: 1070 [2019-10-07 14:29:54,002 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:54,125 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:54,851 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:55,293 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:55,717 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:55,827 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:56,542 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:56,966 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:57,400 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:57,510 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:58,219 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:29:58,648 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:59,078 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:29:59,192 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:29:59,912 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:00,336 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:00,761 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:00,872 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:01,576 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:02,017 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:02,445 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:02,554 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:03,258 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:03,681 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:04,110 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:04,221 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:04,937 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:05,361 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:05,784 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:05,892 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:06,596 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:07,028 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:07,454 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:07,563 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:08,273 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:08,697 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:09,120 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:30:09,228 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:09,941 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:10,831 WARN L191 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:11,542 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:11,668 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:12,381 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:13,832 WARN L191 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:30:14,553 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:14,689 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:15,396 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:16,104 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:16,826 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:16,937 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:17,641 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:18,617 WARN L191 SmtUtils]: Spent 940.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:19,331 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:19,454 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:20,181 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:22,189 WARN L191 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:22,904 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:23,025 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:23,749 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:25,012 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:30:25,729 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:25,839 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:26,545 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:27,254 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:27,969 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:30:28,082 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:28,785 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:29,516 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:30,228 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:30,356 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:31,071 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:30:31,810 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:32,524 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:32,636 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:33,353 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:30:34,562 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:30:35,278 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:35,409 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:36,128 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:30:36,844 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:37,557 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:37,667 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:38,390 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:30:39,701 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:30:40,412 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:40,550 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:41,275 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:42,559 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:30:43,267 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:43,387 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:44,099 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:44,820 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:45,525 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:45,644 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:30:46,360 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:30:47,115 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:47,840 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:47,961 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:48,684 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:49,439 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:50,160 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:50,276 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:51,013 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:51,741 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:52,479 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:52,594 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:53,306 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:54,524 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1232 [2019-10-07 14:30:55,253 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:55,371 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:56,097 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:30:57,388 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1234 [2019-10-07 14:30:58,105 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:30:58,220 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:30:58,932 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:31:00,228 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:31:00,928 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:01,051 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:01,757 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:03,022 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:31:03,727 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:03,868 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:04,568 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:05,274 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:05,982 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:06,095 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:06,810 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:08,109 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:31:08,815 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:08,929 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:09,636 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:10,909 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:31:11,633 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:11,749 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:12,460 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:13,167 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:13,872 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:13,980 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:14,690 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:16,008 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:31:16,741 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:31:16,865 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:17,609 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:18,882 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:31:19,595 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:19,711 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:20,421 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:21,615 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:31:22,317 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:31:22,426 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:23,132 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:24,328 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1232 [2019-10-07 14:31:25,035 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:25,151 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:25,864 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:27,149 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:31:27,852 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:27,966 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:28,673 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:29,943 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:31:30,653 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:30,767 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:31,468 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:32,170 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:32,865 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:32,975 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:33,677 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:34,964 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:31:35,669 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:31:35,798 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:36,508 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:37,798 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:31:38,511 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:38,627 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:39,334 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:40,511 WARN L191 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:31:41,212 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:31:41,321 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:42,035 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:43,244 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1232 [2019-10-07 14:31:43,952 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:44,161 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:44,988 WARN L191 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:31:46,276 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1234 [2019-10-07 14:31:46,989 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:31:47,111 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:47,828 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:31:49,162 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1234 [2019-10-07 14:31:49,877 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:31:49,992 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:50,705 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:31:51,972 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1234 [2019-10-07 14:31:52,679 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:31:52,791 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:31:53,500 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:31:54,757 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:31:55,455 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:55,567 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:56,272 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:57,561 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:31:58,258 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:58,377 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:31:59,074 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:31:59,773 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:00,474 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:00,582 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:01,280 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:02,561 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:32:03,263 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:03,377 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:32:04,083 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:04,810 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:05,520 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:05,634 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:32:06,338 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:07,621 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:32:08,343 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:08,453 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:32:09,169 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:10,407 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:32:11,338 WARN L191 SmtUtils]: Spent 928.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:11,454 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:32:12,163 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:13,360 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:32:14,077 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:14,192 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:32:14,917 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:32:16,229 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:32:16,946 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:17,065 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:17,796 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:19,111 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:32:19,829 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:19,958 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:20,670 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:21,974 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:32:22,684 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:22,807 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:23,525 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:24,804 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:32:25,526 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:25,648 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:26,367 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:27,088 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:27,812 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:27,923 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:28,653 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:29,965 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:32:30,685 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:32:30,810 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:32:31,539 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:32,274 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:33,006 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:33,130 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:32:33,860 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:32:33,867 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1090 for LOIs [2019-10-07 14:32:34,327 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:32:34,784 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:32:34,895 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:35,605 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:35,616 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1042 for LOIs [2019-10-07 14:32:36,000 WARN L191 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 1042 [2019-10-07 14:32:36,386 WARN L191 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 1042 [2019-10-07 14:32:36,497 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:37,211 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:37,516 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:32:37,517 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:32:37,522 INFO L168 Benchmark]: Toolchain (without parser) took 349128.89 ms. Allocated memory was 137.9 MB in the beginning and 3.6 GB in the end (delta: 3.5 GB). Free memory was 98.8 MB in the beginning and 2.4 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2019-10-07 14:32:37,523 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 14:32:37,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1075.28 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 98.6 MB in the beginning and 140.7 MB in the end (delta: -42.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:32:37,524 INFO L168 Benchmark]: Boogie Preprocessor took 204.58 ms. Allocated memory is still 202.9 MB. Free memory was 140.7 MB in the beginning and 131.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-07 14:32:37,524 INFO L168 Benchmark]: RCFGBuilder took 5311.16 ms. Allocated memory was 202.9 MB in the beginning and 308.8 MB in the end (delta: 105.9 MB). Free memory was 131.4 MB in the beginning and 234.7 MB in the end (delta: -103.3 MB). Peak memory consumption was 165.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:32:37,524 INFO L168 Benchmark]: TraceAbstraction took 342532.99 ms. Allocated memory was 308.8 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 234.7 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2019-10-07 14:32:37,526 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1075.28 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 98.6 MB in the beginning and 140.7 MB in the end (delta: -42.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.58 ms. Allocated memory is still 202.9 MB. Free memory was 140.7 MB in the beginning and 131.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5311.16 ms. Allocated memory was 202.9 MB in the beginning and 308.8 MB in the end (delta: 105.9 MB). Free memory was 131.4 MB in the beginning and 234.7 MB in the end (delta: -103.3 MB). Peak memory consumption was 165.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 342532.99 ms. Allocated memory was 308.8 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 234.7 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...