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_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:25:24,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:25:24,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:25:24,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:25:24,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:25:24,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:25:24,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:25:24,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:25:24,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:25:24,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:25:24,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:25:24,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:25:24,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:25:24,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:25:24,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:25:24,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:25:24,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:25:24,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:25:24,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:25:24,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:25:24,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:25:24,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:25:24,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:25:24,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:25:24,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:25:24,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:25:24,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:25:24,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:25:24,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:25:24,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:25:24,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:25:24,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:25:24,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:25:24,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:25:24,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:25:24,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:25:24,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:25:24,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:25:24,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:25:24,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:25:24,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:25:24,889 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 14:25:24,910 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:25:24,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:25:24,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:25:24,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:25:24,913 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:25:24,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:25:24,914 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:25:24,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:25:24,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:25:24,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:25:24,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:25:24,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:25:24,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:25:24,916 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:25:24,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:25:24,916 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:25:24,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:25:24,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:25:24,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:25:24,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:25:24,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:25:24,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:25:24,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:25:24,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:25:24,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:25:24,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:25:24,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:25:24,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:25:24,919 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 14:25:25,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:25:25,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:25:25,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:25:25,209 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:25:25,210 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:25:25,210 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c [2019-10-07 14:25:25,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8974107c/2bc084f3ba254be6932b4a01628066d7/FLAGd8aa98138 [2019-10-07 14:25:25,905 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:25:25,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product18.cil.c [2019-10-07 14:25:25,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8974107c/2bc084f3ba254be6932b4a01628066d7/FLAGd8aa98138 [2019-10-07 14:25:26,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8974107c/2bc084f3ba254be6932b4a01628066d7 [2019-10-07 14:25:26,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:25:26,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:25:26,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:25:26,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:25:26,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:25:26,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:25:26" (1/1) ... [2019-10-07 14:25:26,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6861fd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:26, skipping insertion in model container [2019-10-07 14:25:26,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:25:26" (1/1) ... [2019-10-07 14:25:26,139 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:25:26,209 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:25:26,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:25:26,896 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:25:27,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:25:27,084 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:25:27,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27 WrapperNode [2019-10-07 14:25:27,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:25:27,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:25:27,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:25:27,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:25:27,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27" (1/1) ... [2019-10-07 14:25:27,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27" (1/1) ... [2019-10-07 14:25:27,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27" (1/1) ... [2019-10-07 14:25:27,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27" (1/1) ... [2019-10-07 14:25:27,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27" (1/1) ... [2019-10-07 14:25:27,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27" (1/1) ... [2019-10-07 14:25:27,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27" (1/1) ... [2019-10-07 14:25:27,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:25:27,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:25:27,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:25:27,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:25:27,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27" (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 14:25:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:25:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:25:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:25:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:25:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:25:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:25:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:25:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:25:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:25:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:25:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:25:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:25:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:25:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:25:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:25:27,373 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:25:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:25:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:25:27,374 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:25:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:25:27,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:25:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:25:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:25:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:25:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:25:27,377 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:25:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:25:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:25:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:25:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:25:27,378 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:25:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:25:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:25:27,379 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:25:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:25:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:25:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:25:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:25:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:25:27,382 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:25:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:25:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:25:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:25:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:25:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:25:27,383 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:25:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:25:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:25:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:25:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:25:27,384 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:25:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:25:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:25:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:25:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:25:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:25:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:25:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:25:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:25:27,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:25:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:25:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2019-10-07 14:25:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:25:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__weight [2019-10-07 14:25:27,387 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:25:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:25:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:25:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:25:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:25:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:25:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:25:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:25:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:25:27,390 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:25:27,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:25:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:25:27,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:25:27,392 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:25:27,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:25:27,393 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:25:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:25:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:25:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:25:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:25:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:25:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:25:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:25:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:25:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:25:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:25:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:25:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:25:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:25:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:25:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:25:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:25:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:25:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:25:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:25:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:25:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:25:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:25:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:25:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:25:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:25:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:25:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:25:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:25:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:25:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:25:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:25:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:25:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:25:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:25:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:25:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:25:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:25:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:25:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:25:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:25:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:25:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:25:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:25:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:25:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:25:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:25:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:25:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:25:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:25:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:25:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:25:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:25:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:25:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:25:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:25:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:25:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:25:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:25:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:25:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:25:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:25:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:25:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:25:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:25:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:25:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:25:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:25:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:25:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:25:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:25:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:25:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:25:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:25:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2019-10-07 14:25:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:25:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:25:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__weight [2019-10-07 14:25:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:25:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:25:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:25:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:25:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:25:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:25:32,201 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:25:32,201 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:25:32,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:25:32 BoogieIcfgContainer [2019-10-07 14:25:32,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:25:32,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:25:32,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:25:32,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:25:32,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:25:26" (1/3) ... [2019-10-07 14:25:32,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9e0602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:25:32, skipping insertion in model container [2019-10-07 14:25:32,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:25:27" (2/3) ... [2019-10-07 14:25:32,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9e0602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:25:32, skipping insertion in model container [2019-10-07 14:25:32,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:25:32" (3/3) ... [2019-10-07 14:25:32,212 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product18.cil.c [2019-10-07 14:25:32,222 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:25:32,232 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:25:32,242 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:25:32,274 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:25:32,275 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:25:32,275 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:25:32,275 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:25:32,275 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:25:32,275 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:25:32,275 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:25:32,276 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:25:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states. [2019-10-07 14:25:32,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-07 14:25:32,319 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:32,321 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] [2019-10-07 14:25:32,323 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:32,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1732124610, now seen corresponding path program 1 times [2019-10-07 14:25:32,339 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:32,339 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:32,339 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:32,339 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:33,162 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 14:25:33,162 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:33,163 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:33,163 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:25:33,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:25:33,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:25:33,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:25:33,185 INFO L87 Difference]: Start difference. First operand 583 states. Second operand 8 states. [2019-10-07 14:25:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:37,026 INFO L93 Difference]: Finished difference Result 1630 states and 2514 transitions. [2019-10-07 14:25:37,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:25:37,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-10-07 14:25:37,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:37,059 INFO L225 Difference]: With dead ends: 1630 [2019-10-07 14:25:37,059 INFO L226 Difference]: Without dead ends: 1175 [2019-10-07 14:25:37,068 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:25:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-10-07 14:25:37,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1165. [2019-10-07 14:25:37,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2019-10-07 14:25:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1750 transitions. [2019-10-07 14:25:37,267 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1750 transitions. Word has length 80 [2019-10-07 14:25:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:37,268 INFO L462 AbstractCegarLoop]: Abstraction has 1165 states and 1750 transitions. [2019-10-07 14:25:37,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:25:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1750 transitions. [2019-10-07 14:25:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-07 14:25:37,273 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:37,273 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] [2019-10-07 14:25:37,274 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:37,274 INFO L82 PathProgramCache]: Analyzing trace with hash -320565942, now seen corresponding path program 1 times [2019-10-07 14:25:37,274 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:37,274 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:37,275 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:37,275 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:37,594 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 14:25:37,594 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:37,594 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:37,595 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:25:37,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:25:37,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:25:37,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:25:37,598 INFO L87 Difference]: Start difference. First operand 1165 states and 1750 transitions. Second operand 3 states. [2019-10-07 14:25:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:37,897 INFO L93 Difference]: Finished difference Result 3423 states and 5209 transitions. [2019-10-07 14:25:37,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:25:37,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-07 14:25:37,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:37,922 INFO L225 Difference]: With dead ends: 3423 [2019-10-07 14:25:37,922 INFO L226 Difference]: Without dead ends: 2291 [2019-10-07 14:25:37,932 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:25:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2019-10-07 14:25:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2167. [2019-10-07 14:25:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2167 states. [2019-10-07 14:25:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3304 transitions. [2019-10-07 14:25:38,084 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3304 transitions. Word has length 81 [2019-10-07 14:25:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:38,084 INFO L462 AbstractCegarLoop]: Abstraction has 2167 states and 3304 transitions. [2019-10-07 14:25:38,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:25:38,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3304 transitions. [2019-10-07 14:25:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-07 14:25:38,090 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:38,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:38,091 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash -636058728, now seen corresponding path program 1 times [2019-10-07 14:25:38,092 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:38,092 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:38,092 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:38,092 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:38,327 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 14:25:38,328 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:38,328 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:38,328 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:25:38,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:25:38,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:25:38,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:25:38,330 INFO L87 Difference]: Start difference. First operand 2167 states and 3304 transitions. Second operand 10 states. [2019-10-07 14:25:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:40,097 INFO L93 Difference]: Finished difference Result 4893 states and 7479 transitions. [2019-10-07 14:25:40,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:25:40,098 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2019-10-07 14:25:40,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:40,129 INFO L225 Difference]: With dead ends: 4893 [2019-10-07 14:25:40,129 INFO L226 Difference]: Without dead ends: 2757 [2019-10-07 14:25:40,147 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:25:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2019-10-07 14:25:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2745. [2019-10-07 14:25:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2745 states. [2019-10-07 14:25:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 4139 transitions. [2019-10-07 14:25:40,384 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 4139 transitions. Word has length 112 [2019-10-07 14:25:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:40,388 INFO L462 AbstractCegarLoop]: Abstraction has 2745 states and 4139 transitions. [2019-10-07 14:25:40,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:25:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 4139 transitions. [2019-10-07 14:25:40,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-07 14:25:40,394 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:40,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:40,396 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:40,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:40,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1453420152, now seen corresponding path program 1 times [2019-10-07 14:25:40,397 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:40,397 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:40,397 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:40,397 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:40,747 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 14:25:40,748 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:40,748 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:40,748 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:25:40,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:25:40,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:25:40,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:25:40,751 INFO L87 Difference]: Start difference. First operand 2745 states and 4139 transitions. Second operand 7 states. [2019-10-07 14:25:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:44,075 INFO L93 Difference]: Finished difference Result 8108 states and 12664 transitions. [2019-10-07 14:25:44,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:25:44,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-07 14:25:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:44,123 INFO L225 Difference]: With dead ends: 8108 [2019-10-07 14:25:44,123 INFO L226 Difference]: Without dead ends: 5394 [2019-10-07 14:25:44,144 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:25:44,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5394 states. [2019-10-07 14:25:44,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5394 to 5287. [2019-10-07 14:25:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5287 states. [2019-10-07 14:25:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 8095 transitions. [2019-10-07 14:25:44,458 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 8095 transitions. Word has length 113 [2019-10-07 14:25:44,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:44,459 INFO L462 AbstractCegarLoop]: Abstraction has 5287 states and 8095 transitions. [2019-10-07 14:25:44,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:25:44,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 8095 transitions. [2019-10-07 14:25:44,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-07 14:25:44,463 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:44,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:44,464 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:44,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1698191104, now seen corresponding path program 1 times [2019-10-07 14:25:44,465 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:44,465 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:44,465 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:44,465 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:44,767 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 14:25:44,768 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:44,768 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:44,768 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 14:25:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:45,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:25:45,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:45,414 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 14:25:45,414 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:45,561 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 14:25:45,562 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:25:45,562 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:25:45,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:25:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:25:45,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:25:45,563 INFO L87 Difference]: Start difference. First operand 5287 states and 8095 transitions. Second operand 3 states. [2019-10-07 14:25:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:46,510 INFO L93 Difference]: Finished difference Result 14687 states and 23998 transitions. [2019-10-07 14:25:46,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:25:46,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-10-07 14:25:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:46,598 INFO L225 Difference]: With dead ends: 14687 [2019-10-07 14:25:46,599 INFO L226 Difference]: Without dead ends: 9431 [2019-10-07 14:25:46,647 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 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 14:25:46,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2019-10-07 14:25:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 8931. [2019-10-07 14:25:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8931 states. [2019-10-07 14:25:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8931 states to 8931 states and 13895 transitions. [2019-10-07 14:25:47,337 INFO L78 Accepts]: Start accepts. Automaton has 8931 states and 13895 transitions. Word has length 112 [2019-10-07 14:25:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:47,338 INFO L462 AbstractCegarLoop]: Abstraction has 8931 states and 13895 transitions. [2019-10-07 14:25:47,339 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:25:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 8931 states and 13895 transitions. [2019-10-07 14:25:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-07 14:25:47,347 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:47,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:47,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:47,561 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:47,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:47,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1601228581, now seen corresponding path program 1 times [2019-10-07 14:25:47,562 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:47,562 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:47,566 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:47,566 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:47,845 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 14:25:47,845 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:47,845 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:25:47,846 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 14:25:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:48,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:25:48,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:25:48,896 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 14:25:48,896 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:25:49,052 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 14:25:49,053 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:25:49,053 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:25:49,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:25:49,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:25:49,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:25:49,056 INFO L87 Difference]: Start difference. First operand 8931 states and 13895 transitions. Second operand 3 states. [2019-10-07 14:25:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:49,805 INFO L93 Difference]: Finished difference Result 19685 states and 31776 transitions. [2019-10-07 14:25:49,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:25:49,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-10-07 14:25:49,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:49,951 INFO L225 Difference]: With dead ends: 19685 [2019-10-07 14:25:49,951 INFO L226 Difference]: Without dead ends: 10785 [2019-10-07 14:25:50,017 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 228 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 14:25:50,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10785 states. [2019-10-07 14:25:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10785 to 10513. [2019-10-07 14:25:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10513 states. [2019-10-07 14:25:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10513 states to 10513 states and 16373 transitions. [2019-10-07 14:25:51,750 INFO L78 Accepts]: Start accepts. Automaton has 10513 states and 16373 transitions. Word has length 113 [2019-10-07 14:25:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:51,750 INFO L462 AbstractCegarLoop]: Abstraction has 10513 states and 16373 transitions. [2019-10-07 14:25:51,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:25:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 10513 states and 16373 transitions. [2019-10-07 14:25:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:25:51,755 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:51,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:51,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:25:51,964 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:51,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1834686710, now seen corresponding path program 1 times [2019-10-07 14:25:51,965 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:51,965 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:51,965 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:51,965 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 14:25:52,264 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:52,265 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:52,265 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:25:52,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:25:52,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:25:52,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:25:52,267 INFO L87 Difference]: Start difference. First operand 10513 states and 16373 transitions. Second operand 10 states. [2019-10-07 14:25:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:56,468 INFO L93 Difference]: Finished difference Result 34014 states and 55817 transitions. [2019-10-07 14:25:56,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 14:25:56,469 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2019-10-07 14:25:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:56,654 INFO L225 Difference]: With dead ends: 34014 [2019-10-07 14:25:56,654 INFO L226 Difference]: Without dead ends: 23532 [2019-10-07 14:25:56,715 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-07 14:25:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23532 states. [2019-10-07 14:25:57,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23532 to 23268. [2019-10-07 14:25:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23268 states. [2019-10-07 14:25:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23268 states to 23268 states and 37363 transitions. [2019-10-07 14:25:58,156 INFO L78 Accepts]: Start accepts. Automaton has 23268 states and 37363 transitions. Word has length 119 [2019-10-07 14:25:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:25:58,157 INFO L462 AbstractCegarLoop]: Abstraction has 23268 states and 37363 transitions. [2019-10-07 14:25:58,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:25:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 23268 states and 37363 transitions. [2019-10-07 14:25:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:25:58,161 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:25:58,162 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:25:58,162 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:25:58,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:25:58,162 INFO L82 PathProgramCache]: Analyzing trace with hash -276022654, now seen corresponding path program 1 times [2019-10-07 14:25:58,163 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:25:58,163 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:58,163 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:58,163 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:25:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:25:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:25:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:25:58,378 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:25:58,378 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:25:58,379 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:25:58,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:25:58,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:25:58,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:25:58,382 INFO L87 Difference]: Start difference. First operand 23268 states and 37363 transitions. Second operand 8 states. [2019-10-07 14:25:59,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:25:59,386 INFO L93 Difference]: Finished difference Result 45965 states and 75954 transitions. [2019-10-07 14:25:59,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:25:59,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2019-10-07 14:25:59,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:25:59,846 INFO L225 Difference]: With dead ends: 45965 [2019-10-07 14:25:59,847 INFO L226 Difference]: Without dead ends: 25371 [2019-10-07 14:25:59,954 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 14:25:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25371 states. [2019-10-07 14:26:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25371 to 23578. [2019-10-07 14:26:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23578 states. [2019-10-07 14:26:01,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23578 states to 23578 states and 37673 transitions. [2019-10-07 14:26:01,269 INFO L78 Accepts]: Start accepts. Automaton has 23578 states and 37673 transitions. Word has length 125 [2019-10-07 14:26:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:01,270 INFO L462 AbstractCegarLoop]: Abstraction has 23578 states and 37673 transitions. [2019-10-07 14:26:01,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:26:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 23578 states and 37673 transitions. [2019-10-07 14:26:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-07 14:26:01,276 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:01,277 INFO L385 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:26:01,277 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:01,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:01,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1402877932, now seen corresponding path program 1 times [2019-10-07 14:26:01,278 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:01,278 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:01,279 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:01,279 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:26:01,532 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:01,532 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:26:01,532 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-07 14:26:01,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-07 14:26:01,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-07 14:26:01,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:26:01,534 INFO L87 Difference]: Start difference. First operand 23578 states and 37673 transitions. Second operand 11 states. [2019-10-07 14:26:08,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:08,679 INFO L93 Difference]: Finished difference Result 50734 states and 85724 transitions. [2019-10-07 14:26:08,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 14:26:08,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 129 [2019-10-07 14:26:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:08,933 INFO L225 Difference]: With dead ends: 50734 [2019-10-07 14:26:08,934 INFO L226 Difference]: Without dead ends: 30168 [2019-10-07 14:26:09,066 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2019-10-07 14:26:09,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30168 states. [2019-10-07 14:26:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30168 to 28246. [2019-10-07 14:26:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28246 states. [2019-10-07 14:26:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28246 states to 28246 states and 45510 transitions. [2019-10-07 14:26:10,919 INFO L78 Accepts]: Start accepts. Automaton has 28246 states and 45510 transitions. Word has length 129 [2019-10-07 14:26:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:10,920 INFO L462 AbstractCegarLoop]: Abstraction has 28246 states and 45510 transitions. [2019-10-07 14:26:10,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-07 14:26:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 28246 states and 45510 transitions. [2019-10-07 14:26:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-07 14:26:10,925 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:10,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:26:10,925 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:10,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2038884971, now seen corresponding path program 1 times [2019-10-07 14:26:10,926 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:10,926 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:10,926 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:10,926 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:11,222 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 14:26:11,223 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:11,223 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:26:11,223 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-07 14:26:11,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-07 14:26:11,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-07 14:26:11,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:26:11,226 INFO L87 Difference]: Start difference. First operand 28246 states and 45510 transitions. Second operand 16 states. [2019-10-07 14:26:29,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:29,110 INFO L93 Difference]: Finished difference Result 119223 states and 216982 transitions. [2019-10-07 14:26:29,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-10-07 14:26:29,111 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 132 [2019-10-07 14:26:29,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:29,766 INFO L225 Difference]: With dead ends: 119223 [2019-10-07 14:26:29,766 INFO L226 Difference]: Without dead ends: 94885 [2019-10-07 14:26:29,971 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=480, Invalid=2490, Unknown=0, NotChecked=0, Total=2970 [2019-10-07 14:26:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94885 states. [2019-10-07 14:26:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94885 to 88978. [2019-10-07 14:26:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88978 states. [2019-10-07 14:26:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88978 states to 88978 states and 153298 transitions. [2019-10-07 14:26:37,304 INFO L78 Accepts]: Start accepts. Automaton has 88978 states and 153298 transitions. Word has length 132 [2019-10-07 14:26:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:37,305 INFO L462 AbstractCegarLoop]: Abstraction has 88978 states and 153298 transitions. [2019-10-07 14:26:37,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-07 14:26:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 88978 states and 153298 transitions. [2019-10-07 14:26:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-07 14:26:37,315 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:37,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:26:37,315 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:37,316 INFO L82 PathProgramCache]: Analyzing trace with hash -935210505, now seen corresponding path program 1 times [2019-10-07 14:26:37,316 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:37,316 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:37,316 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:37,316 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:37,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:37,536 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 14:26:37,536 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:37,536 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:37,537 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 14:26:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:38,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:26:38,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:38,401 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 14:26:38,401 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:38,619 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 14:26:38,620 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:26:38,620 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 11 [2019-10-07 14:26:38,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:26:38,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:26:38,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:26:38,622 INFO L87 Difference]: Start difference. First operand 88978 states and 153298 transitions. Second operand 5 states. [2019-10-07 14:26:44,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:44,761 INFO L93 Difference]: Finished difference Result 177238 states and 320846 transitions. [2019-10-07 14:26:44,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:26:44,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-10-07 14:26:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:45,432 INFO L225 Difference]: With dead ends: 177238 [2019-10-07 14:26:45,432 INFO L226 Difference]: Without dead ends: 91032 [2019-10-07 14:26:45,878 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 309 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:26:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91032 states. [2019-10-07 14:26:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91032 to 90126. [2019-10-07 14:26:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90126 states. [2019-10-07 14:26:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90126 states to 90126 states and 156025 transitions. [2019-10-07 14:26:50,460 INFO L78 Accepts]: Start accepts. Automaton has 90126 states and 156025 transitions. Word has length 156 [2019-10-07 14:26:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:26:50,461 INFO L462 AbstractCegarLoop]: Abstraction has 90126 states and 156025 transitions. [2019-10-07 14:26:50,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:26:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 90126 states and 156025 transitions. [2019-10-07 14:26:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-07 14:26:50,469 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:26:50,470 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:26:50,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:26:50,678 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:26:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:26:50,678 INFO L82 PathProgramCache]: Analyzing trace with hash -953916905, now seen corresponding path program 1 times [2019-10-07 14:26:50,679 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:26:50,679 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:50,679 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:50,679 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:26:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:26:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 14:26:50,865 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:26:50,866 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:26:50,866 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 14:26:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:26:51,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 3368 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:26:51,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:26:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 14:26:51,779 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:26:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 14:26:52,038 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:26:52,038 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:26:52,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:26:52,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:26:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:26:52,043 INFO L87 Difference]: Start difference. First operand 90126 states and 156025 transitions. Second operand 4 states. [2019-10-07 14:26:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:26:58,735 INFO L93 Difference]: Finished difference Result 190895 states and 342466 transitions. [2019-10-07 14:26:58,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:26:58,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2019-10-07 14:26:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:26:59,438 INFO L225 Difference]: With dead ends: 190895 [2019-10-07 14:26:59,438 INFO L226 Difference]: Without dead ends: 83909 [2019-10-07 14:26:59,885 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 332 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:26:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83909 states. [2019-10-07 14:27:07,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83909 to 83885. [2019-10-07 14:27:07,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83885 states. [2019-10-07 14:27:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83885 states to 83885 states and 140596 transitions. [2019-10-07 14:27:07,817 INFO L78 Accepts]: Start accepts. Automaton has 83885 states and 140596 transitions. Word has length 167 [2019-10-07 14:27:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:07,818 INFO L462 AbstractCegarLoop]: Abstraction has 83885 states and 140596 transitions. [2019-10-07 14:27:07,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:27:07,818 INFO L276 IsEmpty]: Start isEmpty. Operand 83885 states and 140596 transitions. [2019-10-07 14:27:07,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-07 14:27:07,830 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:07,831 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 14:27:08,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:08,032 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1759480793, now seen corresponding path program 1 times [2019-10-07 14:27:08,032 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:08,032 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:08,032 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:08,032 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 14:27:08,227 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:08,227 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:08,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:08,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 3372 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:27:08,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 14:27:08,999 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 14:27:09,178 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:09,178 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:27:09,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:27:09,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:27:09,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:27:09,180 INFO L87 Difference]: Start difference. First operand 83885 states and 140596 transitions. Second operand 4 states. [2019-10-07 14:27:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:12,883 INFO L93 Difference]: Finished difference Result 181537 states and 317696 transitions. [2019-10-07 14:27:12,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:27:12,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2019-10-07 14:27:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:13,455 INFO L225 Difference]: With dead ends: 181537 [2019-10-07 14:27:13,455 INFO L226 Difference]: Without dead ends: 83885 [2019-10-07 14:27:13,884 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 340 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:27:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83885 states. [2019-10-07 14:27:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83885 to 83885. [2019-10-07 14:27:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83885 states. [2019-10-07 14:27:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83885 states to 83885 states and 138189 transitions. [2019-10-07 14:27:22,505 INFO L78 Accepts]: Start accepts. Automaton has 83885 states and 138189 transitions. Word has length 171 [2019-10-07 14:27:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:22,505 INFO L462 AbstractCegarLoop]: Abstraction has 83885 states and 138189 transitions. [2019-10-07 14:27:22,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:27:22,506 INFO L276 IsEmpty]: Start isEmpty. Operand 83885 states and 138189 transitions. [2019-10-07 14:27:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-07 14:27:22,517 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:22,518 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, 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] [2019-10-07 14:27:22,725 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:22,726 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:22,726 INFO L82 PathProgramCache]: Analyzing trace with hash -597998744, now seen corresponding path program 1 times [2019-10-07 14:27:22,727 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:22,727 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:22,727 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:22,728 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-07 14:27:22,969 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:22,969 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:23,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 3818 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:27:23,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 14:27:23,774 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:24,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:27:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-07 14:27:24,238 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:24,238 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:27:24,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:27:24,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:27:24,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:27:24,239 INFO L87 Difference]: Start difference. First operand 83885 states and 138189 transitions. Second operand 9 states. [2019-10-07 14:27:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:27:37,099 INFO L93 Difference]: Finished difference Result 226672 states and 407816 transitions. [2019-10-07 14:27:37,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:27:37,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-07 14:27:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:27:38,633 INFO L225 Difference]: With dead ends: 226672 [2019-10-07 14:27:38,634 INFO L226 Difference]: Without dead ends: 142818 [2019-10-07 14:27:38,877 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 364 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:27:38,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142818 states. [2019-10-07 14:27:48,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142818 to 134096. [2019-10-07 14:27:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134096 states. [2019-10-07 14:27:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134096 states to 134096 states and 225135 transitions. [2019-10-07 14:27:49,675 INFO L78 Accepts]: Start accepts. Automaton has 134096 states and 225135 transitions. Word has length 187 [2019-10-07 14:27:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:27:49,676 INFO L462 AbstractCegarLoop]: Abstraction has 134096 states and 225135 transitions. [2019-10-07 14:27:49,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:27:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 134096 states and 225135 transitions. [2019-10-07 14:27:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2019-10-07 14:27:49,686 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:27:49,686 INFO L385 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:27:49,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:49,888 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:27:49,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:27:49,888 INFO L82 PathProgramCache]: Analyzing trace with hash -970976042, now seen corresponding path program 1 times [2019-10-07 14:27:49,889 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:27:49,889 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:49,889 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:49,890 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:27:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:27:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2019-10-07 14:27:50,223 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:27:50,224 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:27:50,224 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 14:27:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:27:51,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 4408 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:27:51,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:27:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-10-07 14:27:51,841 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:27:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-10-07 14:27:52,163 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:27:52,163 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9, 4] total 11 [2019-10-07 14:27:52,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:27:52,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:27:52,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:27:52,165 INFO L87 Difference]: Start difference. First operand 134096 states and 225135 transitions. Second operand 3 states. [2019-10-07 14:28:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:02,122 INFO L93 Difference]: Finished difference Result 306801 states and 553043 transitions. [2019-10-07 14:28:02,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:28:02,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 317 [2019-10-07 14:28:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:02,989 INFO L225 Difference]: With dead ends: 306801 [2019-10-07 14:28:02,990 INFO L226 Difference]: Without dead ends: 172736 [2019-10-07 14:28:03,735 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:28:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172736 states. [2019-10-07 14:28:17,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172736 to 169038. [2019-10-07 14:28:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169038 states. [2019-10-07 14:28:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169038 states to 169038 states and 284347 transitions. [2019-10-07 14:28:19,973 INFO L78 Accepts]: Start accepts. Automaton has 169038 states and 284347 transitions. Word has length 317 [2019-10-07 14:28:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:19,974 INFO L462 AbstractCegarLoop]: Abstraction has 169038 states and 284347 transitions. [2019-10-07 14:28:19,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:28:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 169038 states and 284347 transitions. [2019-10-07 14:28:19,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-07 14:28:19,980 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:19,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:28:20,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:20,183 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1838248443, now seen corresponding path program 1 times [2019-10-07 14:28:20,184 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:20,184 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:20,185 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:20,185 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:20,374 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 14:28:20,375 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:20,379 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:28:20,379 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:28:20,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:28:20,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:28:20,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:28:20,381 INFO L87 Difference]: Start difference. First operand 169038 states and 284347 transitions. Second operand 5 states. [2019-10-07 14:28:33,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:33,325 INFO L93 Difference]: Finished difference Result 286895 states and 496732 transitions. [2019-10-07 14:28:33,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:28:33,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2019-10-07 14:28:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:34,582 INFO L225 Difference]: With dead ends: 286895 [2019-10-07 14:28:34,582 INFO L226 Difference]: Without dead ends: 172776 [2019-10-07 14:28:35,246 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 14:28:35,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172776 states. [2019-10-07 14:28:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172776 to 171620. [2019-10-07 14:28:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171620 states. [2019-10-07 14:28:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171620 states to 171620 states and 287163 transitions. [2019-10-07 14:28:48,961 INFO L78 Accepts]: Start accepts. Automaton has 171620 states and 287163 transitions. Word has length 191 [2019-10-07 14:28:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:48,962 INFO L462 AbstractCegarLoop]: Abstraction has 171620 states and 287163 transitions. [2019-10-07 14:28:48,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:28:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 171620 states and 287163 transitions. [2019-10-07 14:28:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2019-10-07 14:28:48,970 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:48,970 INFO L385 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 14:28:48,970 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:48,971 INFO L82 PathProgramCache]: Analyzing trace with hash 2095916265, now seen corresponding path program 1 times [2019-10-07 14:28:48,971 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:48,971 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:48,971 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:48,971 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2019-10-07 14:28:50,166 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:50,167 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:50,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:50,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 4422 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-07 14:28:51,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 95 proven. 20 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-10-07 14:28:51,217 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:51,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,851 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,853 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 14:28:51,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:51,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2019-10-07 14:28:52,076 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:28:52,109 INFO L162 IcfgInterpreter]: Started Sifa with 210 locations of interest [2019-10-07 14:28:52,109 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:28:52,115 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:28:52,123 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:28:52,123 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:29:50,175 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 767 [2019-10-07 14:29:55,713 WARN L191 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 430 DAG size of output: 347 [2019-10-07 14:29:56,200 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 860 [2019-10-07 14:29:56,628 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 860 [2019-10-07 14:29:56,997 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 860 [2019-10-07 14:29:58,207 WARN L191 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:29:58,725 WARN L191 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:29:59,210 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:30:00,414 WARN L191 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:30:01,536 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 1046 DAG size of output: 1044 [2019-10-07 14:30:02,701 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:30:03,244 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:30:04,369 WARN L191 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:30:04,849 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:30:05,364 WARN L191 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 1044 [2019-10-07 14:30:05,379 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 385 for LOIs [2019-10-07 14:30:05,710 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 735 [2019-10-07 14:30:06,565 WARN L191 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 735 [2019-10-07 14:30:07,008 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 919 [2019-10-07 14:30:07,010 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1090 for LOIs [2019-10-07 14:30:07,477 WARN L191 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:08,588 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:08,712 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:09,471 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:10,480 WARN L191 SmtUtils]: Spent 989.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:10,936 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:11,056 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:16,672 WARN L191 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:17,165 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:17,633 WARN L191 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:17,838 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:18,634 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:19,511 WARN L191 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 1254 DAG size of output: 1090 [2019-10-07 14:30:19,967 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:20,223 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:21,264 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:21,746 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:22,218 WARN L191 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:22,337 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:23,101 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:23,576 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:24,038 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:24,155 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:24,920 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:25,411 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:25,881 WARN L191 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:25,994 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:26,744 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:27,194 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:27,656 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:27,773 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:28,521 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:28,995 WARN L191 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:29,450 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:29,566 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:30,338 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:30,801 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:31,256 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:31,370 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:32,141 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:32,603 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:33,059 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:33,185 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:33,945 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:34,410 WARN L191 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:34,875 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:34,989 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:35,755 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:36,231 WARN L191 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:36,694 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 1090 [2019-10-07 14:30:36,810 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:37,567 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:38,713 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:39,526 WARN L191 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:39,738 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:40,501 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:42,918 WARN L191 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:30:43,675 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:43,801 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:44,551 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:45,334 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:46,104 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:46,219 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:30:46,987 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:30:48,816 WARN L191 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:30:49,924 WARN L191 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:30:50,044 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:30:50,824 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:30:52,220 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:30:52,981 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:30:53,103 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:30:53,913 WARN L191 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:30:55,303 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:30:56,093 WARN L191 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:30:56,213 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:30:56,990 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:30:57,772 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1261 [2019-10-07 14:30:58,566 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1261 [2019-10-07 14:30:58,697 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:30:59,477 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1261 [2019-10-07 14:31:00,250 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:01,041 WARN L191 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:01,163 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:01,970 WARN L191 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:02,776 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:03,536 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:03,654 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:04,428 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:05,214 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:05,970 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:06,233 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:07,341 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:08,118 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:08,908 WARN L191 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:09,023 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:09,819 WARN L191 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:11,250 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:31:12,003 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:12,190 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:12,987 WARN L191 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:14,381 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:31:15,166 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:15,289 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:16,067 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:16,837 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:17,594 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:17,717 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:18,512 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:19,849 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:31:20,627 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:31:20,761 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:21,555 WARN L191 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:31:22,867 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:31:23,618 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:31:23,741 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:24,498 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:31:25,253 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:31:26,035 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:31:26,151 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:26,915 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:31:28,329 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1263 DAG size of output: 1261 [2019-10-07 14:31:29,117 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 1261 [2019-10-07 14:31:29,240 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:30,035 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1261 [2019-10-07 14:31:31,440 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 1265 DAG size of output: 1263 [2019-10-07 14:31:32,224 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:32,346 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:33,127 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1263 [2019-10-07 14:31:34,532 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:31:35,308 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:35,427 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:36,217 WARN L191 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:37,633 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:31:38,403 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:38,524 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:39,299 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:40,100 WARN L191 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:40,861 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:40,974 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:41,742 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:43,121 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:31:43,905 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:44,027 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:44,805 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:46,199 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:31:46,986 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:47,124 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:47,880 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:48,655 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:49,430 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:49,542 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:50,287 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:51,678 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:31:52,455 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:31:52,576 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:53,345 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:31:54,669 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:31:55,440 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:31:55,560 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:31:56,332 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:31:57,698 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:31:58,461 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:31:58,586 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:31:59,340 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:00,726 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:32:01,503 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:01,625 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:32:02,377 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:03,171 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:03,931 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:04,047 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:32:04,820 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:06,154 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:32:06,925 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:32:07,049 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:07,812 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:09,174 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:32:09,921 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:10,044 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:10,803 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:12,105 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:32:12,876 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:32:12,995 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:13,767 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:15,163 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1263 DAG size of output: 1261 [2019-10-07 14:32:15,952 WARN L191 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 1261 [2019-10-07 14:32:16,091 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:16,863 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1261 [2019-10-07 14:32:18,268 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:32:19,017 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:19,154 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:32:19,940 WARN L191 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:21,305 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:32:22,058 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:22,175 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:32:22,942 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:23,706 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:24,500 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:24,620 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:32:25,386 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:26,744 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:32:27,531 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:32:27,655 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:28,447 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:29,208 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:29,975 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:30,095 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:30,836 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:32,131 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:32:32,872 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:32:32,989 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:33,744 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:35,008 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1263 DAG size of output: 1254 [2019-10-07 14:32:35,784 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:32:35,903 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:36,677 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:37,981 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1265 DAG size of output: 1256 [2019-10-07 14:32:38,773 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:38,902 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:39,684 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:32:41,086 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1265 DAG size of output: 1256 [2019-10-07 14:32:41,874 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:41,997 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:42,774 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:32:44,102 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1260 DAG size of output: 1256 [2019-10-07 14:32:44,875 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:44,995 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:32:45,759 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:32:47,192 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:32:47,966 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:48,085 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:32:48,857 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:50,218 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:32:50,994 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:51,120 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:32:51,896 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:53,290 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:32:54,093 WARN L191 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:54,214 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:32:54,993 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:56,367 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1254 DAG size of output: 1252 [2019-10-07 14:32:57,149 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:57,269 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:32:58,044 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:58,857 WARN L191 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:59,633 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:32:59,750 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:33:00,504 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:33:01,872 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:33:02,612 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:33:02,741 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:33:03,517 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:04,909 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:33:05,689 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:05,828 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:33:06,604 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:07,962 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:33:08,732 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:33:08,852 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:33:09,636 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:10,891 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1254 [2019-10-07 14:33:11,675 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1254 [2019-10-07 14:33:11,798 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:33:12,582 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:13,872 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1260 DAG size of output: 1256 [2019-10-07 14:33:14,704 WARN L191 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:14,828 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 440 [2019-10-07 14:33:15,600 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:33:15,607 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1114 for LOIs [2019-10-07 14:33:16,100 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 1114 [2019-10-07 14:33:16,612 WARN L191 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 1114 [2019-10-07 14:33:16,731 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:33:17,510 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:33:17,521 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1062 for LOIs [2019-10-07 14:33:17,946 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:33:18,354 WARN L191 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 1062 [2019-10-07 14:33:18,471 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 437 [2019-10-07 14:33:19,260 WARN L191 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 1252 [2019-10-07 14:33:19,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:33:19,540 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 14:33:19,547 INFO L168 Benchmark]: Toolchain (without parser) took 473428.35 ms. Allocated memory was 138.9 MB in the beginning and 3.7 GB in the end (delta: 3.5 GB). Free memory was 101.0 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2019-10-07 14:33:19,548 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 14:33:19,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 962.82 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.8 MB in the beginning and 143.9 MB in the end (delta: -43.2 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2019-10-07 14:33:19,548 INFO L168 Benchmark]: Boogie Preprocessor took 200.28 ms. Allocated memory is still 203.9 MB. Free memory was 143.9 MB in the beginning and 134.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-07 14:33:19,549 INFO L168 Benchmark]: RCFGBuilder took 4917.15 ms. Allocated memory was 203.9 MB in the beginning and 304.1 MB in the end (delta: 100.1 MB). Free memory was 134.0 MB in the beginning and 225.0 MB in the end (delta: -91.0 MB). Peak memory consumption was 156.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:33:19,549 INFO L168 Benchmark]: TraceAbstraction took 467340.73 ms. Allocated memory was 304.1 MB in the beginning and 3.7 GB in the end (delta: 3.4 GB). Free memory was 225.0 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2019-10-07 14:33:19,551 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 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 962.82 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.8 MB in the beginning and 143.9 MB in the end (delta: -43.2 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 200.28 ms. Allocated memory is still 203.9 MB. Free memory was 143.9 MB in the beginning and 134.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4917.15 ms. Allocated memory was 203.9 MB in the beginning and 304.1 MB in the end (delta: 100.1 MB). Free memory was 134.0 MB in the beginning and 225.0 MB in the end (delta: -91.0 MB). Peak memory consumption was 156.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 467340.73 ms. Allocated memory was 304.1 MB in the beginning and 3.7 GB in the end (delta: 3.4 GB). Free memory was 225.0 MB in the beginning and 1.8 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...