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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:23:59,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:23:59,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:23:59,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:23:59,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:23:59,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:23:59,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:23:59,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:23:59,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:23:59,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:23:59,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:23:59,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:23:59,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:23:59,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:23:59,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:23:59,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:23:59,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:23:59,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:23:59,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:23:59,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:23:59,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:23:59,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:23:59,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:23:59,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:23:59,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:23:59,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:23:59,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:23:59,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:23:59,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:23:59,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:23:59,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:23:59,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:23:59,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:23:59,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:23:59,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:23:59,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:23:59,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:23:59,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:23:59,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:23:59,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:23:59,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:23:59,828 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 14:23:59,855 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:23:59,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:23:59,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:23:59,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:23:59,857 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:23:59,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:23:59,858 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:23:59,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:23:59,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:23:59,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:23:59,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:23:59,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:23:59,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:23:59,859 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:23:59,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:23:59,859 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:23:59,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:23:59,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:23:59,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:23:59,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:23:59,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:23:59,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:23:59,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:23:59,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:23:59,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:23:59,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:23:59,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:23:59,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:23:59,862 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 14:24:00,118 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:24:00,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:24:00,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:24:00,144 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:24:00,145 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:24:00,145 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product09.cil.c [2019-10-07 14:24:00,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d791039b/55640a96efde46ba8cbd21ebc19bdbb3/FLAG34b1a8362 [2019-10-07 14:24:00,809 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:24:00,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product09.cil.c [2019-10-07 14:24:00,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d791039b/55640a96efde46ba8cbd21ebc19bdbb3/FLAG34b1a8362 [2019-10-07 14:24:01,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d791039b/55640a96efde46ba8cbd21ebc19bdbb3 [2019-10-07 14:24:01,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:24:01,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:24:01,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:24:01,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:24:01,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:24:01,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:24:01" (1/1) ... [2019-10-07 14:24:01,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eff8284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:01, skipping insertion in model container [2019-10-07 14:24:01,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:24:01" (1/1) ... [2019-10-07 14:24:01,136 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:24:01,202 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:24:01,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:24:01,890 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:24:02,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:24:02,125 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:24:02,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02 WrapperNode [2019-10-07 14:24:02,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:24:02,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:24:02,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:24:02,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:24:02,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02" (1/1) ... [2019-10-07 14:24:02,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02" (1/1) ... [2019-10-07 14:24:02,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02" (1/1) ... [2019-10-07 14:24:02,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02" (1/1) ... [2019-10-07 14:24:02,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02" (1/1) ... [2019-10-07 14:24:02,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02" (1/1) ... [2019-10-07 14:24:02,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02" (1/1) ... [2019-10-07 14:24:02,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:24:02,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:24:02,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:24:02,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:24:02,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02" (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 14:24:02,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:24:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:24:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:24:02,414 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:24:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:24:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:24:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:24:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:24:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:24:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:24:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:24:02,416 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:24:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:24:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:24:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:24:02,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:24:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:24:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:24:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:24:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:24:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:24:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:24:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:24:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:24:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:24:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:24:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:24:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:24:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:24:02,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:24:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:24:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:24:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:24:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:24:02,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:24:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:24:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:24:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:24:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:24:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:24:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:24:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:24:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:24:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:24:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:24:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:24:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:24:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:24:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:24:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:24:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:24:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:24:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:24:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:24:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:24:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:24:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:24:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:24:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:24:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:24:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:24:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:24:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:24:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:24:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:24:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:24:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:24:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:24:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:24:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:24:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:24:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:24:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:24:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:24:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:24:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:24:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:24:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:24:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:24:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:24:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:24:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:24:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:24:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:24:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:24:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:24:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:24:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:24:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:24:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:24:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:24:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:24:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:24:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:24:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:24:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:24:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:24:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:24:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:24:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:24:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:24:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:24:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:24:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:24:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:24:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:24:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:24:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:24:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:24:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:24:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:24:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:24:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:24:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:24:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:24:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:24:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:24:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:24:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:24:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:24:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:24:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:24:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:24:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:24:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:24:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:24:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:24:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:24:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:24:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:24:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:24:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:24:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:24:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:24:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:24:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:24:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:24:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:24:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:24:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:24:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:24:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:24:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:24:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:24:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:24:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:24:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:24:02,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:24:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:24:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:24:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:24:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:24:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:24:02,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:24:07,197 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:24:07,198 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:24:07,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:24:07 BoogieIcfgContainer [2019-10-07 14:24:07,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:24:07,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:24:07,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:24:07,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:24:07,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:24:01" (1/3) ... [2019-10-07 14:24:07,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4670fa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:24:07, skipping insertion in model container [2019-10-07 14:24:07,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:24:02" (2/3) ... [2019-10-07 14:24:07,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4670fa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:24:07, skipping insertion in model container [2019-10-07 14:24:07,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:24:07" (3/3) ... [2019-10-07 14:24:07,210 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2019-10-07 14:24:07,220 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:24:07,230 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:24:07,242 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:24:07,280 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:24:07,280 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:24:07,280 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:24:07,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:24:07,280 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:24:07,280 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:24:07,280 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:24:07,280 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:24:07,321 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states. [2019-10-07 14:24:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-07 14:24:07,341 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:07,343 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:07,345 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:07,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash -843125818, now seen corresponding path program 1 times [2019-10-07 14:24:07,360 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:07,360 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:07,361 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:07,361 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 14:24:08,129 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:08,129 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:08,130 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 14:24:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:08,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 2911 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:24:08,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:24:08,851 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:08,976 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:08,976 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:24:08,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:24:08,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:24:08,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:24:08,998 INFO L87 Difference]: Start difference. First operand 561 states. Second operand 3 states. [2019-10-07 14:24:09,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:09,221 INFO L93 Difference]: Finished difference Result 1203 states and 1865 transitions. [2019-10-07 14:24:09,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:24:09,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-10-07 14:24:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:09,261 INFO L225 Difference]: With dead ends: 1203 [2019-10-07 14:24:09,261 INFO L226 Difference]: Without dead ends: 774 [2019-10-07 14:24:09,274 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:24:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-10-07 14:24:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 761. [2019-10-07 14:24:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2019-10-07 14:24:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1165 transitions. [2019-10-07 14:24:09,454 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1165 transitions. Word has length 98 [2019-10-07 14:24:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:09,455 INFO L462 AbstractCegarLoop]: Abstraction has 761 states and 1165 transitions. [2019-10-07 14:24:09,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:24:09,455 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1165 transitions. [2019-10-07 14:24:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-07 14:24:09,473 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:09,474 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:09,675 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:09,676 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash -846004538, now seen corresponding path program 1 times [2019-10-07 14:24:09,677 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:09,677 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:09,678 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:09,678 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:09,939 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:09,940 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:24:09,940 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:24:09,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:24:09,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:24:09,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:24:09,943 INFO L87 Difference]: Start difference. First operand 761 states and 1165 transitions. Second operand 8 states. [2019-10-07 14:24:10,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:10,081 INFO L93 Difference]: Finished difference Result 1505 states and 2333 transitions. [2019-10-07 14:24:10,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:24:10,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2019-10-07 14:24:10,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:10,095 INFO L225 Difference]: With dead ends: 1505 [2019-10-07 14:24:10,095 INFO L226 Difference]: Without dead ends: 775 [2019-10-07 14:24:10,102 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:24:10,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2019-10-07 14:24:10,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 769. [2019-10-07 14:24:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2019-10-07 14:24:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1173 transitions. [2019-10-07 14:24:10,253 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1173 transitions. Word has length 99 [2019-10-07 14:24:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:10,254 INFO L462 AbstractCegarLoop]: Abstraction has 769 states and 1173 transitions. [2019-10-07 14:24:10,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:24:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1173 transitions. [2019-10-07 14:24:10,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-07 14:24:10,262 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:10,262 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:10,262 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:10,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:10,263 INFO L82 PathProgramCache]: Analyzing trace with hash 535744625, now seen corresponding path program 1 times [2019-10-07 14:24:10,263 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:10,270 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:10,270 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:10,270 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:24:10,527 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:10,527 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:10,528 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 14:24:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:11,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 14:24:11,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:11,093 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:24:11,316 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:11,316 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-10-07 14:24:11,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:24:11,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:24:11,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:11,319 INFO L87 Difference]: Start difference. First operand 769 states and 1173 transitions. Second operand 5 states. [2019-10-07 14:24:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:12,817 INFO L93 Difference]: Finished difference Result 2894 states and 4479 transitions. [2019-10-07 14:24:12,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:24:12,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2019-10-07 14:24:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:12,835 INFO L225 Difference]: With dead ends: 2894 [2019-10-07 14:24:12,835 INFO L226 Difference]: Without dead ends: 2156 [2019-10-07 14:24:12,842 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2019-10-07 14:24:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2106. [2019-10-07 14:24:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2019-10-07 14:24:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3172 transitions. [2019-10-07 14:24:13,027 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3172 transitions. Word has length 103 [2019-10-07 14:24:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:13,029 INFO L462 AbstractCegarLoop]: Abstraction has 2106 states and 3172 transitions. [2019-10-07 14:24:13,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:24:13,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3172 transitions. [2019-10-07 14:24:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-07 14:24:13,033 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:13,033 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:13,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:13,242 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:13,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:13,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1662512205, now seen corresponding path program 1 times [2019-10-07 14:24:13,242 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:13,243 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:13,243 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:13,243 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:24:13,554 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:13,554 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:13,555 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 14:24:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:14,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 14:24:14,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:14,161 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:14,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:24:14,361 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:14,361 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2019-10-07 14:24:14,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:24:14,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:24:14,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:24:14,363 INFO L87 Difference]: Start difference. First operand 2106 states and 3172 transitions. Second operand 7 states. [2019-10-07 14:24:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:15,078 INFO L93 Difference]: Finished difference Result 3905 states and 5917 transitions. [2019-10-07 14:24:15,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:24:15,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-07 14:24:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:15,099 INFO L225 Difference]: With dead ends: 3905 [2019-10-07 14:24:15,100 INFO L226 Difference]: Without dead ends: 2348 [2019-10-07 14:24:15,109 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:24:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-07 14:24:15,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2250. [2019-10-07 14:24:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2019-10-07 14:24:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 3372 transitions. [2019-10-07 14:24:15,253 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 3372 transitions. Word has length 107 [2019-10-07 14:24:15,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:15,254 INFO L462 AbstractCegarLoop]: Abstraction has 2250 states and 3372 transitions. [2019-10-07 14:24:15,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:24:15,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 3372 transitions. [2019-10-07 14:24:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-07 14:24:15,259 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:15,259 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:15,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:15,470 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:15,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:15,470 INFO L82 PathProgramCache]: Analyzing trace with hash 929761059, now seen corresponding path program 1 times [2019-10-07 14:24:15,470 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:15,471 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:15,471 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:15,471 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:24:15,682 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:15,682 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:15,682 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 14:24:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:16,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:24:16,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:16,311 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:24:16,442 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:16,442 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 10 [2019-10-07 14:24:16,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:24:16,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:24:16,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:24:16,443 INFO L87 Difference]: Start difference. First operand 2250 states and 3372 transitions. Second operand 5 states. [2019-10-07 14:24:16,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:16,673 INFO L93 Difference]: Finished difference Result 4247 states and 6472 transitions. [2019-10-07 14:24:16,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:24:16,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2019-10-07 14:24:16,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:16,693 INFO L225 Difference]: With dead ends: 4247 [2019-10-07 14:24:16,693 INFO L226 Difference]: Without dead ends: 2250 [2019-10-07 14:24:16,705 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:24:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2019-10-07 14:24:16,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2250. [2019-10-07 14:24:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2019-10-07 14:24:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 3330 transitions. [2019-10-07 14:24:16,825 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 3330 transitions. Word has length 108 [2019-10-07 14:24:16,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:16,826 INFO L462 AbstractCegarLoop]: Abstraction has 2250 states and 3330 transitions. [2019-10-07 14:24:16,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:24:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 3330 transitions. [2019-10-07 14:24:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:24:16,829 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:16,829 INFO L385 BasicCegarLoop]: trace histogram [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 14:24:17,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:17,048 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:17,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1432817663, now seen corresponding path program 1 times [2019-10-07 14:24:17,049 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:17,049 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:17,049 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:17,049 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:24:17,218 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:17,218 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:17,218 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 14:24:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:17,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:24:17,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:18,091 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:18,464 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:24:18,870 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:24:18,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:18,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:18,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:18,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:18,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:24:18,969 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:24:18,969 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 13 [2019-10-07 14:24:18,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:24:18,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:24:18,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:24:18,971 INFO L87 Difference]: Start difference. First operand 2250 states and 3330 transitions. Second operand 6 states. [2019-10-07 14:24:20,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:20,386 INFO L93 Difference]: Finished difference Result 6605 states and 9985 transitions. [2019-10-07 14:24:20,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:24:20,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2019-10-07 14:24:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:20,423 INFO L225 Difference]: With dead ends: 6605 [2019-10-07 14:24:20,423 INFO L226 Difference]: Without dead ends: 4386 [2019-10-07 14:24:20,441 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:24:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2019-10-07 14:24:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4230. [2019-10-07 14:24:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4230 states. [2019-10-07 14:24:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 6339 transitions. [2019-10-07 14:24:20,755 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 6339 transitions. Word has length 110 [2019-10-07 14:24:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:20,755 INFO L462 AbstractCegarLoop]: Abstraction has 4230 states and 6339 transitions. [2019-10-07 14:24:20,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:24:20,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 6339 transitions. [2019-10-07 14:24:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-07 14:24:20,758 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:20,759 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:20,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:20,966 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:20,966 INFO L82 PathProgramCache]: Analyzing trace with hash -701252849, now seen corresponding path program 1 times [2019-10-07 14:24:20,967 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:20,967 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:20,967 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:20,967 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:24:21,179 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:21,180 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:21,180 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 14:24:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:21,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:24:21,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:24:21,785 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:24:21,863 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:21,864 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:24:21,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:24:21,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:24:21,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:24:21,865 INFO L87 Difference]: Start difference. First operand 4230 states and 6339 transitions. Second operand 3 states. [2019-10-07 14:24:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:22,142 INFO L93 Difference]: Finished difference Result 10449 states and 15959 transitions. [2019-10-07 14:24:22,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:24:22,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-10-07 14:24:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:22,191 INFO L225 Difference]: With dead ends: 10449 [2019-10-07 14:24:22,191 INFO L226 Difference]: Without dead ends: 6250 [2019-10-07 14:24:22,222 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:24:22,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2019-10-07 14:24:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 6084. [2019-10-07 14:24:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2019-10-07 14:24:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9123 transitions. [2019-10-07 14:24:22,635 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9123 transitions. Word has length 110 [2019-10-07 14:24:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:22,640 INFO L462 AbstractCegarLoop]: Abstraction has 6084 states and 9123 transitions. [2019-10-07 14:24:22,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:24:22,640 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9123 transitions. [2019-10-07 14:24:22,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-07 14:24:22,645 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:22,646 INFO L385 BasicCegarLoop]: trace histogram [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 14:24:22,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:22,862 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:22,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:22,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2079036795, now seen corresponding path program 1 times [2019-10-07 14:24:22,862 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:22,862 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:22,862 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:22,862 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:23,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 14:24:23,040 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:23,040 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:23,040 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 14:24:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:23,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:24:23,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 14:24:23,640 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:23,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:24:23,910 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:24:23,910 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-07 14:24:23,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-07 14:24:23,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-07 14:24:23,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:24:23,913 INFO L87 Difference]: Start difference. First operand 6084 states and 9123 transitions. Second operand 11 states. [2019-10-07 14:24:27,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:27,578 INFO L93 Difference]: Finished difference Result 13748 states and 20884 transitions. [2019-10-07 14:24:27,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-07 14:24:27,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2019-10-07 14:24:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:27,633 INFO L225 Difference]: With dead ends: 13748 [2019-10-07 14:24:27,634 INFO L226 Difference]: Without dead ends: 7695 [2019-10-07 14:24:27,675 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 214 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:24:27,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2019-10-07 14:24:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 7642. [2019-10-07 14:24:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7642 states. [2019-10-07 14:24:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7642 states to 7642 states and 11369 transitions. [2019-10-07 14:24:28,177 INFO L78 Accepts]: Start accepts. Automaton has 7642 states and 11369 transitions. Word has length 111 [2019-10-07 14:24:28,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:28,179 INFO L462 AbstractCegarLoop]: Abstraction has 7642 states and 11369 transitions. [2019-10-07 14:24:28,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-07 14:24:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7642 states and 11369 transitions. [2019-10-07 14:24:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-07 14:24:28,183 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:28,183 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:24:28,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:28,394 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:28,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:28,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1650288734, now seen corresponding path program 1 times [2019-10-07 14:24:28,395 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:28,395 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:28,395 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:28,395 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:24:28,601 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:28,601 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:28,602 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 14:24:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:29,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 2964 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-07 14:24:29,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:24:29,292 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:29,646 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:24:30,030 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:24:30,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:30,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:30,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:30,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:30,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:24:30,118 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:24:30,118 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 7] total 16 [2019-10-07 14:24:30,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:24:30,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:24:30,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:24:30,120 INFO L87 Difference]: Start difference. First operand 7642 states and 11369 transitions. Second operand 6 states. [2019-10-07 14:24:31,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:31,788 INFO L93 Difference]: Finished difference Result 22250 states and 33887 transitions. [2019-10-07 14:24:31,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:24:31,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2019-10-07 14:24:31,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:31,881 INFO L225 Difference]: With dead ends: 22250 [2019-10-07 14:24:31,881 INFO L226 Difference]: Without dead ends: 14639 [2019-10-07 14:24:31,921 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:24:31,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14639 states. [2019-10-07 14:24:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14639 to 14422. [2019-10-07 14:24:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14422 states. [2019-10-07 14:24:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14422 states to 14422 states and 21747 transitions. [2019-10-07 14:24:32,645 INFO L78 Accepts]: Start accepts. Automaton has 14422 states and 21747 transitions. Word has length 116 [2019-10-07 14:24:32,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:32,647 INFO L462 AbstractCegarLoop]: Abstraction has 14422 states and 21747 transitions. [2019-10-07 14:24:32,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:24:32,648 INFO L276 IsEmpty]: Start isEmpty. Operand 14422 states and 21747 transitions. [2019-10-07 14:24:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-07 14:24:32,651 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:32,651 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:24:32,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:32,869 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:32,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1064778183, now seen corresponding path program 1 times [2019-10-07 14:24:32,870 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:32,870 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:32,870 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:32,870 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:33,987 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 14:24:33,988 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:33,988 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:24:33,988 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-07 14:24:33,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-07 14:24:33,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-07 14:24:33,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:24:33,989 INFO L87 Difference]: Start difference. First operand 14422 states and 21747 transitions. Second operand 15 states. [2019-10-07 14:24:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:45,939 INFO L93 Difference]: Finished difference Result 56291 states and 89017 transitions. [2019-10-07 14:24:45,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-10-07 14:24:45,940 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 122 [2019-10-07 14:24:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:46,288 INFO L225 Difference]: With dead ends: 56291 [2019-10-07 14:24:46,289 INFO L226 Difference]: Without dead ends: 43785 [2019-10-07 14:24:46,379 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=299, Invalid=1681, Unknown=0, NotChecked=0, Total=1980 [2019-10-07 14:24:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43785 states. [2019-10-07 14:24:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43785 to 41022. [2019-10-07 14:24:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41022 states. [2019-10-07 14:24:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41022 states to 41022 states and 63300 transitions. [2019-10-07 14:24:50,116 INFO L78 Accepts]: Start accepts. Automaton has 41022 states and 63300 transitions. Word has length 122 [2019-10-07 14:24:50,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:50,116 INFO L462 AbstractCegarLoop]: Abstraction has 41022 states and 63300 transitions. [2019-10-07 14:24:50,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-07 14:24:50,117 INFO L276 IsEmpty]: Start isEmpty. Operand 41022 states and 63300 transitions. [2019-10-07 14:24:50,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-07 14:24:50,122 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:50,122 INFO L385 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1] [2019-10-07 14:24:50,123 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:50,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:50,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1777442734, now seen corresponding path program 1 times [2019-10-07 14:24:50,124 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:50,124 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:50,124 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:50,124 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:24:50,294 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:50,294 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:50,295 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 14:24:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:50,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:24:50,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:24:50,917 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:24:51,057 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:24:51,058 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 11 [2019-10-07 14:24:51,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:24:51,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:24:51,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:24:51,060 INFO L87 Difference]: Start difference. First operand 41022 states and 63300 transitions. Second operand 5 states. [2019-10-07 14:24:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:24:52,623 INFO L93 Difference]: Finished difference Result 81692 states and 131027 transitions. [2019-10-07 14:24:52,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:24:52,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-10-07 14:24:52,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:24:52,877 INFO L225 Difference]: With dead ends: 81692 [2019-10-07 14:24:52,877 INFO L226 Difference]: Without dead ends: 42026 [2019-10-07 14:24:53,053 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 288 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:24:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42026 states. [2019-10-07 14:24:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42026 to 41842. [2019-10-07 14:24:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41842 states. [2019-10-07 14:24:57,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41842 states to 41842 states and 66739 transitions. [2019-10-07 14:24:57,602 INFO L78 Accepts]: Start accepts. Automaton has 41842 states and 66739 transitions. Word has length 146 [2019-10-07 14:24:57,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:24:57,605 INFO L462 AbstractCegarLoop]: Abstraction has 41842 states and 66739 transitions. [2019-10-07 14:24:57,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:24:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 41842 states and 66739 transitions. [2019-10-07 14:24:57,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 14:24:57,616 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:24:57,617 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 14:24:57,825 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:24:57,827 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:24:57,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:24:57,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1144876319, now seen corresponding path program 1 times [2019-10-07 14:24:57,828 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:24:57,828 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:57,828 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:57,828 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:24:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:24:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:24:58,051 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:24:58,051 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:24:58,052 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 14:24:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:24:58,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 3313 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:24:58,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:24:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:24:58,800 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:24:59,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:24:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:24:59,206 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:24:59,206 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:24:59,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:24:59,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:24:59,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:24:59,208 INFO L87 Difference]: Start difference. First operand 41842 states and 66739 transitions. Second operand 9 states. [2019-10-07 14:25:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:08,150 INFO L93 Difference]: Finished difference Result 108706 states and 182134 transitions. [2019-10-07 14:25:08,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:25:08,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2019-10-07 14:25:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:08,626 INFO L225 Difference]: With dead ends: 108706 [2019-10-07 14:25:08,626 INFO L226 Difference]: Without dead ends: 66895 [2019-10-07 14:25:08,809 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 334 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:25:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66895 states. [2019-10-07 14:25:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66895 to 63806. [2019-10-07 14:25:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63806 states. [2019-10-07 14:25:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63806 states to 63806 states and 103313 transitions. [2019-10-07 14:25:14,417 INFO L78 Accepts]: Start accepts. Automaton has 63806 states and 103313 transitions. Word has length 172 [2019-10-07 14:25:14,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:14,417 INFO L462 AbstractCegarLoop]: Abstraction has 63806 states and 103313 transitions. [2019-10-07 14:25:14,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:25:14,418 INFO L276 IsEmpty]: Start isEmpty. Operand 63806 states and 103313 transitions. [2019-10-07 14:25:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-07 14:25:14,426 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:14,427 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:14,634 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:14,634 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:14,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2122428270, now seen corresponding path program 1 times [2019-10-07 14:25:14,635 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:14,635 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:14,636 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:14,636 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 14:25:14,840 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:14,840 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:15,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:25:15,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-07 14:25:15,462 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-07 14:25:15,605 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:15,605 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 4] total 11 [2019-10-07 14:25:15,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:25:15,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:25:15,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:25:15,606 INFO L87 Difference]: Start difference. First operand 63806 states and 103313 transitions. Second operand 4 states. [2019-10-07 14:25:18,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:18,343 INFO L93 Difference]: Finished difference Result 130735 states and 218567 transitions. [2019-10-07 14:25:18,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:25:18,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-07 14:25:18,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:18,713 INFO L225 Difference]: With dead ends: 130735 [2019-10-07 14:25:18,714 INFO L226 Difference]: Without dead ends: 58386 [2019-10-07 14:25:19,035 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:25:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58386 states. [2019-10-07 14:25:24,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58386 to 58341. [2019-10-07 14:25:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58341 states. [2019-10-07 14:25:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58341 states to 58341 states and 91899 transitions. [2019-10-07 14:25:24,362 INFO L78 Accepts]: Start accepts. Automaton has 58341 states and 91899 transitions. Word has length 177 [2019-10-07 14:25:24,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:24,362 INFO L462 AbstractCegarLoop]: Abstraction has 58341 states and 91899 transitions. [2019-10-07 14:25:24,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:25:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 58341 states and 91899 transitions. [2019-10-07 14:25:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 14:25:24,371 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:24,371 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:24,581 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:24,584 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:24,584 INFO L82 PathProgramCache]: Analyzing trace with hash -493148046, now seen corresponding path program 1 times [2019-10-07 14:25:24,584 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:24,584 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:24,584 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:24,584 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-07 14:25:24,738 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:24,739 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:24,739 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:25:24,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:25:24,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:25:24,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:25:24,740 INFO L87 Difference]: Start difference. First operand 58341 states and 91899 transitions. Second operand 5 states. [2019-10-07 14:25:26,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:26,902 INFO L93 Difference]: Finished difference Result 98409 states and 159881 transitions. [2019-10-07 14:25:26,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:25:26,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2019-10-07 14:25:26,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:27,166 INFO L225 Difference]: With dead ends: 98409 [2019-10-07 14:25:27,167 INFO L226 Difference]: Without dead ends: 59535 [2019-10-07 14:25:27,302 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:25:27,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59535 states. [2019-10-07 14:25:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59535 to 58883. [2019-10-07 14:25:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58883 states. [2019-10-07 14:25:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58883 states to 58883 states and 92389 transitions. [2019-10-07 14:25:29,994 INFO L78 Accepts]: Start accepts. Automaton has 58883 states and 92389 transitions. Word has length 181 [2019-10-07 14:25:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:29,995 INFO L462 AbstractCegarLoop]: Abstraction has 58883 states and 92389 transitions. [2019-10-07 14:25:29,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:25:29,995 INFO L276 IsEmpty]: Start isEmpty. Operand 58883 states and 92389 transitions. [2019-10-07 14:25:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-07 14:25:30,001 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:30,002 INFO L385 BasicCegarLoop]: trace histogram [6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 14:25:30,002 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:30,002 INFO L82 PathProgramCache]: Analyzing trace with hash 832011607, now seen corresponding path program 1 times [2019-10-07 14:25:30,002 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:30,003 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:30,003 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:30,003 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-07 14:25:30,148 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:30,148 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:30,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 3356 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:25:30,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:25:30,797 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-07 14:25:30,952 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:25:30,952 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:25:30,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:25:30,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:25:30,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:25:30,954 INFO L87 Difference]: Start difference. First operand 58883 states and 92389 transitions. Second operand 3 states. [2019-10-07 14:25:36,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:36,099 INFO L93 Difference]: Finished difference Result 139763 states and 229836 transitions. [2019-10-07 14:25:36,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:25:36,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2019-10-07 14:25:36,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:36,487 INFO L225 Difference]: With dead ends: 139763 [2019-10-07 14:25:36,487 INFO L226 Difference]: Without dead ends: 80911 [2019-10-07 14:25:36,685 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 367 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 14:25:36,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80911 states. [2019-10-07 14:25:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80911 to 79994. [2019-10-07 14:25:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79994 states. [2019-10-07 14:25:39,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79994 states to 79994 states and 125389 transitions. [2019-10-07 14:25:39,973 INFO L78 Accepts]: Start accepts. Automaton has 79994 states and 125389 transitions. Word has length 185 [2019-10-07 14:25:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:39,974 INFO L462 AbstractCegarLoop]: Abstraction has 79994 states and 125389 transitions. [2019-10-07 14:25:39,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:25:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand 79994 states and 125389 transitions. [2019-10-07 14:25:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-07 14:25:39,984 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:39,984 INFO L385 BasicCegarLoop]: trace histogram [6, 4, 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, 1, 1, 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 14:25:40,191 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:40,192 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash -667654784, now seen corresponding path program 1 times [2019-10-07 14:25:40,192 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:40,193 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:40,193 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:40,193 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 14:25:40,390 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:40,390 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:40,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:41,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 14:25:41,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 14:25:41,740 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:42,126 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:25:42,526 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 13 [2019-10-07 14:25:42,554 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:42,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:42,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:42,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:42,557 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:25:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-07 14:25:42,620 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:25:42,648 INFO L162 IcfgInterpreter]: Started Sifa with 155 locations of interest [2019-10-07 14:25:42,648 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:25:42,654 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:25:42,661 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:25:42,661 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:26:26,738 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 750 [2019-10-07 14:26:31,424 WARN L191 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:26:31,938 WARN L191 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 836 [2019-10-07 14:26:32,297 WARN L191 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 836 [2019-10-07 14:26:32,521 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 836 [2019-10-07 14:26:35,404 WARN L191 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:26:35,883 WARN L191 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:26:36,319 WARN L191 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:26:36,784 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:26:37,721 WARN L191 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 1014 DAG size of output: 1012 [2019-10-07 14:26:38,161 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:26:38,630 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:26:39,046 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:26:39,468 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:26:39,937 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 1012 [2019-10-07 14:26:39,951 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 370 for LOIs [2019-10-07 14:26:40,139 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 719 [2019-10-07 14:26:40,246 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 719 [2019-10-07 14:26:40,566 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 895 [2019-10-07 14:26:40,568 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1060 for LOIs [2019-10-07 14:26:40,978 WARN L191 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:41,392 WARN L191 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:41,501 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:42,175 WARN L191 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:42,609 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:43,021 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:43,803 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:44,293 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:44,706 WARN L191 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:44,925 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:45,704 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:46,477 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 1214 DAG size of output: 1060 [2019-10-07 14:26:46,894 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:47,077 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:47,770 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:48,205 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:48,620 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:48,724 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:49,408 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:49,825 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:50,249 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:51,034 WARN L191 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:51,453 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:51,870 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:52,658 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:53,084 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:53,505 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:53,608 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:54,291 WARN L191 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:54,709 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:55,125 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:55,230 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:55,919 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:56,339 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:56,758 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:56,863 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:57,544 WARN L191 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:57,974 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:58,396 WARN L191 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:26:58,499 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:26:59,186 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:26:59,605 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:27:00,031 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:27:00,135 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:00,829 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:01,249 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:27:01,668 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 1060 [2019-10-07 14:27:01,772 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:02,457 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:03,897 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:04,588 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:04,702 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:05,388 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:06,642 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:27:07,323 WARN L191 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:07,434 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:08,118 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:08,806 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:09,500 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:09,603 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:10,292 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:11,318 WARN L191 SmtUtils]: Spent 990.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:12,006 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:12,119 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:12,821 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:13,528 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:14,223 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:14,342 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:15,034 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:16,283 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:27:16,973 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:17,078 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:17,792 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:18,491 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:19,177 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:19,282 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:19,972 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:20,670 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:21,366 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:21,478 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:22,172 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:22,890 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:23,586 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:23,702 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:24,392 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:25,624 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1220 DAG size of output: 1216 [2019-10-07 14:27:26,315 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:26,448 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:27,136 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:27,823 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:28,516 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:28,623 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:29,326 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:30,606 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:27:31,315 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:31,426 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:32,128 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:33,754 WARN L191 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:27:34,453 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:34,567 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:35,260 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:35,946 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:36,648 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:36,752 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:37,441 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:38,713 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:27:39,406 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:39,516 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:40,211 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:41,477 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:27:42,172 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:42,286 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:42,989 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:44,227 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:27:44,935 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:45,040 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:45,742 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:46,941 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:27:47,639 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:27:47,781 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:48,489 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:49,742 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1220 DAG size of output: 1216 [2019-10-07 14:27:50,446 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:27:50,559 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:27:51,279 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:27:52,571 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:27:53,266 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:53,375 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:54,074 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:55,311 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:27:56,000 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:56,124 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:56,831 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:57,520 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:58,206 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:27:58,309 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:27:58,993 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:00,251 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:28:00,938 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:01,046 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:01,733 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:03,001 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:28:03,691 WARN L191 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:03,800 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:04,494 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:05,761 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:28:06,458 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:06,568 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:07,266 WARN L191 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:08,527 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:28:09,228 WARN L191 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:09,337 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:10,028 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:10,719 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:11,408 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:11,511 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:12,212 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:13,496 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:14,199 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:14,311 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:15,025 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:16,338 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:17,041 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:17,160 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:17,869 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:19,133 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:19,829 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:19,933 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:20,633 WARN L191 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:21,805 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:28:22,512 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:28:22,625 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:23,334 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:24,594 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1220 DAG size of output: 1216 [2019-10-07 14:28:25,290 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:25,400 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:26,102 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:28:27,361 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:28:28,055 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:28,179 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:28,884 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:30,139 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:28:30,827 WARN L191 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:30,951 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:31,655 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:32,360 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:33,064 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:33,167 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:33,866 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:35,161 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:35,866 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:35,976 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:36,679 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:38,127 WARN L191 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:38,835 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:38,962 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:39,667 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:40,933 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:28:41,627 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:41,735 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:42,440 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:43,703 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:28:44,397 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:44,505 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:45,197 WARN L191 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:45,895 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:46,595 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:46,700 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:28:47,397 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:28:48,820 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:28:49,533 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:49,643 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:50,366 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:51,645 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:28:52,357 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:28:52,467 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:53,173 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:54,410 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:28:55,096 WARN L191 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:28:55,202 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:55,897 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:57,061 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:28:57,752 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:28:57,862 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:28:58,564 WARN L191 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:28:59,800 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1220 DAG size of output: 1216 [2019-10-07 14:29:00,500 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:00,610 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:29:01,308 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:29:02,571 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1220 DAG size of output: 1216 [2019-10-07 14:29:03,269 WARN L191 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:03,378 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:29:04,074 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:29:05,321 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1220 DAG size of output: 1216 [2019-10-07 14:29:06,017 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:06,131 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:29:06,827 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1218 [2019-10-07 14:29:08,073 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:29:08,768 WARN L191 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:29:08,878 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:29:09,565 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:29:10,797 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1214 DAG size of output: 1212 [2019-10-07 14:29:11,488 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:29:11,597 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:29:12,284 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:29:12,971 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:29:13,662 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:29:14,453 WARN L191 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:29:15,720 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1216 [2019-10-07 14:29:16,414 WARN L191 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:16,528 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:29:17,227 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:18,477 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:29:19,173 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:29:19,282 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:29:19,984 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:21,216 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1218 DAG size of output: 1214 [2019-10-07 14:29:21,908 WARN L191 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 1214 [2019-10-07 14:29:22,039 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:29:22,741 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:23,928 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1223 DAG size of output: 1216 [2019-10-07 14:29:24,625 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:24,735 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 421 [2019-10-07 14:29:25,429 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1216 [2019-10-07 14:29:25,436 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1074 for LOIs [2019-10-07 14:29:25,878 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1074 [2019-10-07 14:29:26,321 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1074 [2019-10-07 14:29:26,425 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:29:27,112 WARN L191 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:29:27,122 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1026 for LOIs [2019-10-07 14:29:27,489 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:29:27,856 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:29:27,961 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-10-07 14:29:28,656 WARN L191 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 1212 [2019-10-07 14:29:28,918 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:29:28,919 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 14:29:28,927 INFO L168 Benchmark]: Toolchain (without parser) took 327808.05 ms. Allocated memory was 138.9 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 99.2 MB in the beginning and 2.6 GB in the end (delta: -2.5 GB). Peak memory consumption was 737.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:29:28,927 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 14:29:28,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1005.88 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.0 MB in the beginning and 144.9 MB in the end (delta: -45.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. [2019-10-07 14:29:28,928 INFO L168 Benchmark]: Boogie Preprocessor took 201.97 ms. Allocated memory is still 202.9 MB. Free memory was 144.9 MB in the beginning and 135.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-07 14:29:28,928 INFO L168 Benchmark]: RCFGBuilder took 4872.26 ms. Allocated memory was 202.9 MB in the beginning and 299.9 MB in the end (delta: 97.0 MB). Free memory was 135.3 MB in the beginning and 228.4 MB in the end (delta: -93.1 MB). Peak memory consumption was 154.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:29:28,928 INFO L168 Benchmark]: TraceAbstraction took 321722.80 ms. Allocated memory was 299.9 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 225.1 MB in the beginning and 2.6 GB in the end (delta: -2.4 GB). Peak memory consumption was 702.4 MB. Max. memory is 7.1 GB. [2019-10-07 14:29:28,930 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1005.88 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.0 MB in the beginning and 144.9 MB in the end (delta: -45.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.97 ms. Allocated memory is still 202.9 MB. Free memory was 144.9 MB in the beginning and 135.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4872.26 ms. Allocated memory was 202.9 MB in the beginning and 299.9 MB in the end (delta: 97.0 MB). Free memory was 135.3 MB in the beginning and 228.4 MB in the end (delta: -93.1 MB). Peak memory consumption was 154.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 321722.80 ms. Allocated memory was 299.9 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 225.1 MB in the beginning and 2.6 GB in the end (delta: -2.4 GB). Peak memory consumption was 702.4 MB. 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...