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_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:30:36,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:30:36,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:30:36,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:30:36,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:30:36,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:30:36,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:30:36,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:30:36,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:30:36,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:30:36,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:30:36,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:30:36,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:30:36,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:30:36,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:30:36,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:30:36,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:30:36,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:30:36,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:30:36,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:30:36,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:30:36,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:30:36,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:30:36,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:30:36,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:30:36,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:30:36,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:30:36,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:30:36,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:30:36,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:30:36,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:30:36,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:30:36,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:30:36,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:30:36,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:30:36,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:30:36,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:30:36,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:30:36,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:30:36,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:30:36,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:30:36,750 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 14:30:36,770 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:30:36,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:30:36,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:30:36,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:30:36,772 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:30:36,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:30:36,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:30:36,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:30:36,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:30:36,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:30:36,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:30:36,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:30:36,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:30:36,774 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:30:36,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:30:36,774 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:30:36,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:30:36,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:30:36,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:30:36,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:30:36,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:30:36,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:30:36,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:30:36,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:30:36,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:30:36,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:30:36,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:30:36,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:30:36,777 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 14:30:37,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:30:37,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:30:37,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:30:37,123 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:30:37,123 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:30:37,124 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product31.cil.c [2019-10-07 14:30:37,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c4c364d1/613564ec30af4093b3af2ca7d7bfd4b4/FLAG39e5c7700 [2019-10-07 14:30:37,816 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:30:37,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product31.cil.c [2019-10-07 14:30:37,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c4c364d1/613564ec30af4093b3af2ca7d7bfd4b4/FLAG39e5c7700 [2019-10-07 14:30:38,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c4c364d1/613564ec30af4093b3af2ca7d7bfd4b4 [2019-10-07 14:30:38,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:30:38,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:30:38,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:30:38,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:30:38,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:30:38,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:30:38" (1/1) ... [2019-10-07 14:30:38,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c65c842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:38, skipping insertion in model container [2019-10-07 14:30:38,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:30:38" (1/1) ... [2019-10-07 14:30:38,062 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:30:38,158 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:30:38,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:30:38,863 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:30:39,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:30:39,080 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:30:39,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39 WrapperNode [2019-10-07 14:30:39,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:30:39,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:30:39,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:30:39,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:30:39,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39" (1/1) ... [2019-10-07 14:30:39,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39" (1/1) ... [2019-10-07 14:30:39,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39" (1/1) ... [2019-10-07 14:30:39,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39" (1/1) ... [2019-10-07 14:30:39,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39" (1/1) ... [2019-10-07 14:30:39,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39" (1/1) ... [2019-10-07 14:30:39,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39" (1/1) ... [2019-10-07 14:30:39,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:30:39,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:30:39,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:30:39,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:30:39,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39" (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 14:30:39,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:30:39,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:30:39,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:30:39,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:30:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:30:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:30:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:30:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:30:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:30:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:30:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:30:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:30:39,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:30:39,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:30:39,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:30:39,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:30:39,354 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:30:39,355 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:30:39,355 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:30:39,355 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:30:39,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:30:39,356 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:30:39,356 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:30:39,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:30:39,356 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:30:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:30:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:30:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:30:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:30:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:30:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:30:39,358 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:30:39,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:30:39,358 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:30:39,358 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:30:39,358 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:30:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 14:30:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:30:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:30:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:30:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:30:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:30:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:30:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:30:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:30:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:30:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:30:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:30:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 14:30:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:30:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:30:39,361 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:30:39,362 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:30:39,362 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 14:30:39,362 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:30:39,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:30:39,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:30:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:30:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:30:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:30:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:30:39,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:30:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:30:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:30:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:30:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:30:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:30:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:30:39,365 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:30:39,365 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:30:39,365 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:30:39,365 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:30:39,365 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:30:39,365 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:30:39,366 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:30:39,366 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:30:39,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:30:39,366 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:30:39,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:30:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:30:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:30:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:30:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:30:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:30:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:30:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:30:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:30:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:30:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:30:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:30:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:30:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:30:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:30:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:30:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:30:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:30:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:30:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:30:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:30:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:30:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:30:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:30:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:30:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:30:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:30:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:30:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:30:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:30:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:30:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:30:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:30:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:30:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:30:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:30:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:30:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:30:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:30:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:30:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:30:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:30:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:30:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:30:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:30:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:30:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:30:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:30:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:30:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:30:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:30:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:30:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:30:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:30:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:30:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:30:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:30:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:30:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:30:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:30:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:30:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:30:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 14:30:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:30:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:30:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:30:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:30:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:30:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 14:30:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:30:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:30:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:30:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 14:30:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:30:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:30:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:30:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:30:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:30:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:30:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:30:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:30:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:30:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:30:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:30:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:30:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:30:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:30:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:30:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:30:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:30:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:30:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:30:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:30:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:30:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:30:44,750 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:30:44,750 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:30:44,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:30:44 BoogieIcfgContainer [2019-10-07 14:30:44,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:30:44,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:30:44,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:30:44,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:30:44,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:30:38" (1/3) ... [2019-10-07 14:30:44,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21930d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:30:44, skipping insertion in model container [2019-10-07 14:30:44,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:30:39" (2/3) ... [2019-10-07 14:30:44,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21930d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:30:44, skipping insertion in model container [2019-10-07 14:30:44,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:30:44" (3/3) ... [2019-10-07 14:30:44,762 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product31.cil.c [2019-10-07 14:30:44,773 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:30:44,783 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:30:44,795 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:30:44,830 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:30:44,830 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:30:44,830 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:30:44,831 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:30:44,831 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:30:44,831 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:30:44,831 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:30:44,831 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:30:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states. [2019-10-07 14:30:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:30:44,984 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:44,985 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:44,988 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:44,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:44,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1110816202, now seen corresponding path program 1 times [2019-10-07 14:30:45,004 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:45,004 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:45,004 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:45,005 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:30:45,891 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:45,892 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:45,892 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 14:30:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:46,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:30:46,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:30:46,700 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:46,901 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 14:30:46,901 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:30:46,902 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2019-10-07 14:30:46,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:30:46,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:30:46,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:30:46,928 INFO L87 Difference]: Start difference. First operand 625 states. Second operand 4 states. [2019-10-07 14:30:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:48,517 INFO L93 Difference]: Finished difference Result 1816 states and 2759 transitions. [2019-10-07 14:30:48,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:30:48,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-07 14:30:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:48,551 INFO L225 Difference]: With dead ends: 1816 [2019-10-07 14:30:48,551 INFO L226 Difference]: Without dead ends: 1313 [2019-10-07 14:30:48,563 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:30:48,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2019-10-07 14:30:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1272. [2019-10-07 14:30:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2019-10-07 14:30:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1907 transitions. [2019-10-07 14:30:48,856 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1907 transitions. Word has length 119 [2019-10-07 14:30:48,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:48,859 INFO L462 AbstractCegarLoop]: Abstraction has 1272 states and 1907 transitions. [2019-10-07 14:30:48,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:30:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1907 transitions. [2019-10-07 14:30:48,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:30:48,878 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:48,878 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:49,090 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:49,091 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:49,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:49,092 INFO L82 PathProgramCache]: Analyzing trace with hash 330968778, now seen corresponding path program 1 times [2019-10-07 14:30:49,092 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:49,093 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:49,094 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:49,094 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:49,438 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 14:30:49,438 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:49,439 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:30:49,445 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:30:49,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:30:49,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:30:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:30:49,451 INFO L87 Difference]: Start difference. First operand 1272 states and 1907 transitions. Second operand 7 states. [2019-10-07 14:30:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:52,713 INFO L93 Difference]: Finished difference Result 4886 states and 7542 transitions. [2019-10-07 14:30:52,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:30:52,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-07 14:30:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:52,745 INFO L225 Difference]: With dead ends: 4886 [2019-10-07 14:30:52,746 INFO L226 Difference]: Without dead ends: 3645 [2019-10-07 14:30:52,757 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 14:30:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2019-10-07 14:30:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3543. [2019-10-07 14:30:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2019-10-07 14:30:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5442 transitions. [2019-10-07 14:30:53,009 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5442 transitions. Word has length 119 [2019-10-07 14:30:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:53,010 INFO L462 AbstractCegarLoop]: Abstraction has 3543 states and 5442 transitions. [2019-10-07 14:30:53,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:30:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5442 transitions. [2019-10-07 14:30:53,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:30:53,018 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:53,018 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:53,018 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:53,019 INFO L82 PathProgramCache]: Analyzing trace with hash -739146545, now seen corresponding path program 1 times [2019-10-07 14:30:53,019 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:53,019 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:53,020 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:53,020 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:30:53,435 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:53,435 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:53,435 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 14:30:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:53,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:30:53,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:30:54,019 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:54,186 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 14:30:54,186 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:30:54,187 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:30:54,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:30:54,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:30:54,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:30:54,190 INFO L87 Difference]: Start difference. First operand 3543 states and 5442 transitions. Second operand 3 states. [2019-10-07 14:30:54,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:54,531 INFO L93 Difference]: Finished difference Result 8231 states and 12794 transitions. [2019-10-07 14:30:54,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:30:54,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-07 14:30:54,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:54,578 INFO L225 Difference]: With dead ends: 8231 [2019-10-07 14:30:54,578 INFO L226 Difference]: Without dead ends: 4719 [2019-10-07 14:30:54,602 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 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 14:30:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2019-10-07 14:30:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 3543. [2019-10-07 14:30:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2019-10-07 14:30:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5430 transitions. [2019-10-07 14:30:54,868 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5430 transitions. Word has length 119 [2019-10-07 14:30:54,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:54,873 INFO L462 AbstractCegarLoop]: Abstraction has 3543 states and 5430 transitions. [2019-10-07 14:30:54,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:30:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5430 transitions. [2019-10-07 14:30:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:30:54,881 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:54,882 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:55,092 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:55,095 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:55,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1549090926, now seen corresponding path program 1 times [2019-10-07 14:30:55,096 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:55,096 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:55,096 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:55,096 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:30:55,355 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:55,356 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:55,356 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 14:30:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:55,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:30:55,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:30:56,024 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:56,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:30:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:30:56,336 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:30:56,337 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-07 14:30:56,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:30:56,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:30:56,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:30:56,338 INFO L87 Difference]: Start difference. First operand 3543 states and 5430 transitions. Second operand 6 states. [2019-10-07 14:30:57,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:57,880 INFO L93 Difference]: Finished difference Result 9331 states and 14638 transitions. [2019-10-07 14:30:57,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:30:57,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-07 14:30:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:57,931 INFO L225 Difference]: With dead ends: 9331 [2019-10-07 14:30:57,931 INFO L226 Difference]: Without dead ends: 5819 [2019-10-07 14:30:57,965 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:30:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5819 states. [2019-10-07 14:30:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5819 to 5781. [2019-10-07 14:30:58,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5781 states. [2019-10-07 14:30:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5781 states to 5781 states and 8739 transitions. [2019-10-07 14:30:58,275 INFO L78 Accepts]: Start accepts. Automaton has 5781 states and 8739 transitions. Word has length 120 [2019-10-07 14:30:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:58,276 INFO L462 AbstractCegarLoop]: Abstraction has 5781 states and 8739 transitions. [2019-10-07 14:30:58,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:30:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5781 states and 8739 transitions. [2019-10-07 14:30:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:30:58,284 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:58,284 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:30:58,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:58,492 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:58,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:58,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1696696706, now seen corresponding path program 1 times [2019-10-07 14:30:58,493 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:58,493 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:58,493 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:58,493 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:58,734 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 14:30:58,734 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:58,734 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:30:58,735 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:30:58,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:30:58,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:30:58,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:30:58,736 INFO L87 Difference]: Start difference. First operand 5781 states and 8739 transitions. Second operand 10 states. [2019-10-07 14:31:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:02,762 INFO L93 Difference]: Finished difference Result 21246 states and 33346 transitions. [2019-10-07 14:31:02,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 14:31:02,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-07 14:31:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:03,076 INFO L225 Difference]: With dead ends: 21246 [2019-10-07 14:31:03,076 INFO L226 Difference]: Without dead ends: 15496 [2019-10-07 14:31:03,127 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 14:31:03,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15496 states. [2019-10-07 14:31:03,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15496 to 15166. [2019-10-07 14:31:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15166 states. [2019-10-07 14:31:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15166 states to 15166 states and 23550 transitions. [2019-10-07 14:31:04,012 INFO L78 Accepts]: Start accepts. Automaton has 15166 states and 23550 transitions. Word has length 125 [2019-10-07 14:31:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:04,013 INFO L462 AbstractCegarLoop]: Abstraction has 15166 states and 23550 transitions. [2019-10-07 14:31:04,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:31:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 15166 states and 23550 transitions. [2019-10-07 14:31:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-07 14:31:04,022 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:04,023 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:04,023 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash 946385200, now seen corresponding path program 1 times [2019-10-07 14:31:04,025 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:04,025 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:04,026 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:04,026 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:31:04,302 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:04,303 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:04,304 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 14:31:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:05,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-07 14:31:05,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-07 14:31:05,894 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-07 14:31:06,133 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:31:06,133 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-07 14:31:06,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:31:06,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:31:06,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:31:06,136 INFO L87 Difference]: Start difference. First operand 15166 states and 23550 transitions. Second operand 7 states. [2019-10-07 14:31:08,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:08,967 INFO L93 Difference]: Finished difference Result 31808 states and 49414 transitions. [2019-10-07 14:31:08,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:31:08,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-07 14:31:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:09,068 INFO L225 Difference]: With dead ends: 31808 [2019-10-07 14:31:09,069 INFO L226 Difference]: Without dead ends: 16673 [2019-10-07 14:31:09,120 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:31:09,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16673 states. [2019-10-07 14:31:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16673 to 16626. [2019-10-07 14:31:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16626 states. [2019-10-07 14:31:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16626 states to 16626 states and 25549 transitions. [2019-10-07 14:31:09,845 INFO L78 Accepts]: Start accepts. Automaton has 16626 states and 25549 transitions. Word has length 131 [2019-10-07 14:31:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:09,846 INFO L462 AbstractCegarLoop]: Abstraction has 16626 states and 25549 transitions. [2019-10-07 14:31:09,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:31:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 16626 states and 25549 transitions. [2019-10-07 14:31:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-07 14:31:09,851 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:09,851 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:10,059 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:10,059 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:10,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:10,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1565552110, now seen corresponding path program 1 times [2019-10-07 14:31:10,060 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:10,061 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:10,061 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:10,061 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-07 14:31:10,394 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:10,394 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:10,394 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:31:10,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:31:10,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:31:10,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:31:10,396 INFO L87 Difference]: Start difference. First operand 16626 states and 25549 transitions. Second operand 14 states. [2019-10-07 14:31:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:20,721 INFO L93 Difference]: Finished difference Result 42656 states and 67031 transitions. [2019-10-07 14:31:20,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-07 14:31:20,722 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2019-10-07 14:31:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:20,920 INFO L225 Difference]: With dead ends: 42656 [2019-10-07 14:31:20,920 INFO L226 Difference]: Without dead ends: 29800 [2019-10-07 14:31:20,978 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2019-10-07 14:31:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29800 states. [2019-10-07 14:31:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29800 to 29174. [2019-10-07 14:31:22,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29174 states. [2019-10-07 14:31:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29174 states to 29174 states and 45382 transitions. [2019-10-07 14:31:22,321 INFO L78 Accepts]: Start accepts. Automaton has 29174 states and 45382 transitions. Word has length 140 [2019-10-07 14:31:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:22,322 INFO L462 AbstractCegarLoop]: Abstraction has 29174 states and 45382 transitions. [2019-10-07 14:31:22,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:31:22,322 INFO L276 IsEmpty]: Start isEmpty. Operand 29174 states and 45382 transitions. [2019-10-07 14:31:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-07 14:31:22,329 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:22,329 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:22,330 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:22,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1881033059, now seen corresponding path program 1 times [2019-10-07 14:31:22,330 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:22,330 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:22,331 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:22,331 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:31:22,575 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:22,575 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:22,576 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:31:22,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:31:22,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:31:22,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:31:22,577 INFO L87 Difference]: Start difference. First operand 29174 states and 45382 transitions. Second operand 8 states. [2019-10-07 14:31:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:24,963 INFO L93 Difference]: Finished difference Result 42222 states and 65847 transitions. [2019-10-07 14:31:24,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:31:24,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 167 [2019-10-07 14:31:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:25,176 INFO L225 Difference]: With dead ends: 42222 [2019-10-07 14:31:25,176 INFO L226 Difference]: Without dead ends: 29270 [2019-10-07 14:31:25,253 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:31:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29270 states. [2019-10-07 14:31:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29270 to 29216. [2019-10-07 14:31:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29216 states. [2019-10-07 14:31:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29216 states to 29216 states and 45410 transitions. [2019-10-07 14:31:26,969 INFO L78 Accepts]: Start accepts. Automaton has 29216 states and 45410 transitions. Word has length 167 [2019-10-07 14:31:26,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:26,970 INFO L462 AbstractCegarLoop]: Abstraction has 29216 states and 45410 transitions. [2019-10-07 14:31:26,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:31:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand 29216 states and 45410 transitions. [2019-10-07 14:31:26,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-07 14:31:26,977 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:26,978 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:26,978 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:26,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:26,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1010634029, now seen corresponding path program 1 times [2019-10-07 14:31:26,979 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:26,979 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:26,979 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:26,979 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-07 14:31:27,263 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:27,263 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:27,264 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:31:27,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:31:27,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:31:27,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:31:27,265 INFO L87 Difference]: Start difference. First operand 29216 states and 45410 transitions. Second operand 14 states. [2019-10-07 14:31:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:42,169 INFO L93 Difference]: Finished difference Result 61475 states and 101826 transitions. [2019-10-07 14:31:42,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-07 14:31:42,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 171 [2019-10-07 14:31:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:42,559 INFO L225 Difference]: With dead ends: 61475 [2019-10-07 14:31:42,559 INFO L226 Difference]: Without dead ends: 61444 [2019-10-07 14:31:42,605 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=1654, Unknown=0, NotChecked=0, Total=1892 [2019-10-07 14:31:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61444 states. [2019-10-07 14:31:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61444 to 59731. [2019-10-07 14:31:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59731 states. [2019-10-07 14:31:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59731 states to 59731 states and 97199 transitions. [2019-10-07 14:31:45,063 INFO L78 Accepts]: Start accepts. Automaton has 59731 states and 97199 transitions. Word has length 171 [2019-10-07 14:31:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:45,064 INFO L462 AbstractCegarLoop]: Abstraction has 59731 states and 97199 transitions. [2019-10-07 14:31:45,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:31:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 59731 states and 97199 transitions. [2019-10-07 14:31:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-07 14:31:45,077 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:45,078 INFO L385 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:45,078 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:45,079 INFO L82 PathProgramCache]: Analyzing trace with hash 949473900, now seen corresponding path program 1 times [2019-10-07 14:31:45,079 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:45,079 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:45,079 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:45,079 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-10-07 14:31:45,312 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:45,312 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:45,312 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 14:31:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:45,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 3463 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:31:45,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:31:47,688 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:48,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-10-07 14:31:48,171 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:31:48,171 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:31:48,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:31:48,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:31:48,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:31:48,173 INFO L87 Difference]: Start difference. First operand 59731 states and 97199 transitions. Second operand 9 states. [2019-10-07 14:31:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:58,745 INFO L93 Difference]: Finished difference Result 153619 states and 253384 transitions. [2019-10-07 14:31:58,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:31:58,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2019-10-07 14:31:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:59,221 INFO L225 Difference]: With dead ends: 153619 [2019-10-07 14:31:59,221 INFO L226 Difference]: Without dead ends: 93919 [2019-10-07 14:31:59,388 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 392 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:31:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93919 states. [2019-10-07 14:32:05,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93919 to 92609. [2019-10-07 14:32:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92609 states. [2019-10-07 14:32:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92609 states to 92609 states and 151879 transitions. [2019-10-07 14:32:06,101 INFO L78 Accepts]: Start accepts. Automaton has 92609 states and 151879 transitions. Word has length 201 [2019-10-07 14:32:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:32:06,102 INFO L462 AbstractCegarLoop]: Abstraction has 92609 states and 151879 transitions. [2019-10-07 14:32:06,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:32:06,102 INFO L276 IsEmpty]: Start isEmpty. Operand 92609 states and 151879 transitions. [2019-10-07 14:32:06,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-07 14:32:06,120 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:32:06,120 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:32:06,327 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:32:06,328 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:32:06,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:32:06,328 INFO L82 PathProgramCache]: Analyzing trace with hash -631542475, now seen corresponding path program 1 times [2019-10-07 14:32:06,328 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:32:06,328 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:06,329 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:06,329 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:32:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-10-07 14:32:06,536 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:06,536 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:32:06,536 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 14:32:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:07,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 3506 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:32:07,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:32:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 14:32:07,695 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:32:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-10-07 14:32:07,922 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:32:07,922 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:32:07,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:32:07,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:32:07,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:32:07,923 INFO L87 Difference]: Start difference. First operand 92609 states and 151879 transitions. Second operand 3 states. [2019-10-07 14:32:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:32:14,809 INFO L93 Difference]: Finished difference Result 219516 states and 363811 transitions. [2019-10-07 14:32:14,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:32:14,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-10-07 14:32:14,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:32:15,385 INFO L225 Difference]: With dead ends: 219516 [2019-10-07 14:32:15,385 INFO L226 Difference]: Without dead ends: 126938 [2019-10-07 14:32:15,632 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 425 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:32:15,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126938 states. [2019-10-07 14:32:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126938 to 126032. [2019-10-07 14:32:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126032 states. [2019-10-07 14:32:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126032 states to 126032 states and 207170 transitions. [2019-10-07 14:32:20,802 INFO L78 Accepts]: Start accepts. Automaton has 126032 states and 207170 transitions. Word has length 214 [2019-10-07 14:32:20,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:32:20,802 INFO L462 AbstractCegarLoop]: Abstraction has 126032 states and 207170 transitions. [2019-10-07 14:32:20,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:32:20,803 INFO L276 IsEmpty]: Start isEmpty. Operand 126032 states and 207170 transitions. [2019-10-07 14:32:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-07 14:32:20,820 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:32:20,820 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:32:21,028 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:32:21,028 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:32:21,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:32:21,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1561788431, now seen corresponding path program 1 times [2019-10-07 14:32:21,029 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:32:21,029 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:21,029 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:21,029 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:32:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-10-07 14:32:21,298 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:21,298 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:32:21,298 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 14:32:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:21,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 3521 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-07 14:32:21,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:32:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:32:22,086 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:32:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-07 14:32:22,676 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:32:22,677 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 10] total 18 [2019-10-07 14:32:22,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:32:22,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:32:22,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-10-07 14:32:22,679 INFO L87 Difference]: Start difference. First operand 126032 states and 207170 transitions. Second operand 9 states. [2019-10-07 14:32:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:32:34,655 INFO L93 Difference]: Finished difference Result 313298 states and 517243 transitions. [2019-10-07 14:32:34,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:32:34,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2019-10-07 14:32:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:32:35,718 INFO L225 Difference]: With dead ends: 313298 [2019-10-07 14:32:35,718 INFO L226 Difference]: Without dead ends: 225082 [2019-10-07 14:32:35,981 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:32:36,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225082 states. [2019-10-07 14:32:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225082 to 219244. [2019-10-07 14:32:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219244 states. [2019-10-07 14:32:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219244 states to 219244 states and 361460 transitions. [2019-10-07 14:32:50,394 INFO L78 Accepts]: Start accepts. Automaton has 219244 states and 361460 transitions. Word has length 219 [2019-10-07 14:32:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:32:50,395 INFO L462 AbstractCegarLoop]: Abstraction has 219244 states and 361460 transitions. [2019-10-07 14:32:50,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:32:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 219244 states and 361460 transitions. [2019-10-07 14:32:50,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-07 14:32:50,416 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:32:50,417 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 14:32:50,626 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:32:50,626 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:32:50,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:32:50,627 INFO L82 PathProgramCache]: Analyzing trace with hash -35316281, now seen corresponding path program 1 times [2019-10-07 14:32:50,627 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:32:50,627 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:50,627 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:50,627 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:32:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:32:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:32:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2019-10-07 14:32:50,788 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:32:50,789 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:32:50,789 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:32:50,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:32:50,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:32:50,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:32:50,790 INFO L87 Difference]: Start difference. First operand 219244 states and 361460 transitions. Second operand 3 states. [2019-10-07 14:33:03,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:33:03,506 INFO L93 Difference]: Finished difference Result 370975 states and 610865 transitions. [2019-10-07 14:33:03,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:33:03,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2019-10-07 14:33:03,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:33:04,244 INFO L225 Difference]: With dead ends: 370975 [2019-10-07 14:33:04,244 INFO L226 Difference]: Without dead ends: 155001 [2019-10-07 14:33:04,780 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:33:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155001 states. [2019-10-07 14:33:11,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155001 to 152285. [2019-10-07 14:33:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152285 states. [2019-10-07 14:33:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152285 states to 152285 states and 245945 transitions. [2019-10-07 14:33:12,336 INFO L78 Accepts]: Start accepts. Automaton has 152285 states and 245945 transitions. Word has length 220 [2019-10-07 14:33:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:33:12,336 INFO L462 AbstractCegarLoop]: Abstraction has 152285 states and 245945 transitions. [2019-10-07 14:33:12,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:33:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 152285 states and 245945 transitions. [2019-10-07 14:33:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-07 14:33:12,351 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:33:12,351 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:33:12,352 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:33:12,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:33:12,352 INFO L82 PathProgramCache]: Analyzing trace with hash 319498844, now seen corresponding path program 1 times [2019-10-07 14:33:12,352 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:33:12,352 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:12,353 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:12,353 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:33:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-10-07 14:33:12,677 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:12,677 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:33:12,677 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 14:33:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:13,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 3522 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-07 14:33:13,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:33:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-07 14:33:13,463 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:33:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-07 14:33:13,863 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:33:13,863 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17, 8] total 23 [2019-10-07 14:33:13,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:33:13,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:33:13,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:33:13,865 INFO L87 Difference]: Start difference. First operand 152285 states and 245945 transitions. Second operand 8 states. [2019-10-07 14:33:22,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:33:22,538 INFO L93 Difference]: Finished difference Result 210331 states and 341148 transitions. [2019-10-07 14:33:22,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:33:22,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2019-10-07 14:33:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:33:23,072 INFO L225 Difference]: With dead ends: 210331 [2019-10-07 14:33:23,072 INFO L226 Difference]: Without dead ends: 105531 [2019-10-07 14:33:23,362 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2019-10-07 14:33:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105531 states. [2019-10-07 14:33:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105531 to 105411. [2019-10-07 14:33:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105411 states. [2019-10-07 14:33:27,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105411 states to 105411 states and 170355 transitions. [2019-10-07 14:33:27,808 INFO L78 Accepts]: Start accepts. Automaton has 105411 states and 170355 transitions. Word has length 221 [2019-10-07 14:33:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:33:27,809 INFO L462 AbstractCegarLoop]: Abstraction has 105411 states and 170355 transitions. [2019-10-07 14:33:27,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:33:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 105411 states and 170355 transitions. [2019-10-07 14:33:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-07 14:33:27,829 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:33:27,829 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:28,030 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:33:28,031 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:33:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:33:28,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1829863630, now seen corresponding path program 1 times [2019-10-07 14:33:28,032 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:33:28,032 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:28,032 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:28,032 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:28,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:33:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2019-10-07 14:33:28,194 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:28,194 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:33:28,195 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:33:28,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:33:28,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:33:28,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:33:28,196 INFO L87 Difference]: Start difference. First operand 105411 states and 170355 transitions. Second operand 3 states. [2019-10-07 14:33:34,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:33:34,094 INFO L93 Difference]: Finished difference Result 193734 states and 315175 transitions. [2019-10-07 14:33:34,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:33:34,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2019-10-07 14:33:34,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:33:34,982 INFO L225 Difference]: With dead ends: 193734 [2019-10-07 14:33:34,983 INFO L226 Difference]: Without dead ends: 94357 [2019-10-07 14:33:35,230 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:33:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94357 states. [2019-10-07 14:33:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94357 to 94072. [2019-10-07 14:33:38,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94072 states. [2019-10-07 14:33:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94072 states to 94072 states and 151640 transitions. [2019-10-07 14:33:38,646 INFO L78 Accepts]: Start accepts. Automaton has 94072 states and 151640 transitions. Word has length 225 [2019-10-07 14:33:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:33:38,647 INFO L462 AbstractCegarLoop]: Abstraction has 94072 states and 151640 transitions. [2019-10-07 14:33:38,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:33:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 94072 states and 151640 transitions. [2019-10-07 14:33:38,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2019-10-07 14:33:38,661 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:33:38,661 INFO L385 BasicCegarLoop]: trace histogram [11, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:33:38,661 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:33:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:33:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1112934237, now seen corresponding path program 1 times [2019-10-07 14:33:38,662 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:33:38,662 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:38,662 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:38,662 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:33:38,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:33:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2019-10-07 14:33:38,949 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:33:38,950 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:33:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:33:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:33:39,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 4377 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:33:39,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:33:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 211 proven. 20 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2019-10-07 14:33:40,551 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:33:41,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:41,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:41,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:41,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:41,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:41,052 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:41,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:41,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 14:33:41,161 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:41,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:33:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2019-10-07 14:33:41,293 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:33:41,326 INFO L162 IcfgInterpreter]: Started Sifa with 172 locations of interest [2019-10-07 14:33:41,326 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:33:41,333 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:33:41,341 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:33:41,342 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:34:23,984 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 756 [2019-10-07 14:34:28,922 WARN L191 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:34:32,398 WARN L191 SmtUtils]: Spent 3.47 s on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:34:32,676 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:34:32,901 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:34:33,419 WARN L191 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:34:33,932 WARN L191 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:34:34,396 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:34:34,914 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:34:36,195 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1026 DAG size of output: 1024 [2019-10-07 14:34:36,663 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:34:37,175 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:34:37,628 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:34:38,079 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:34:38,589 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:34:38,605 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 379 for LOIs [2019-10-07 14:34:38,787 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:34:38,896 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:34:39,239 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 907 [2019-10-07 14:34:39,240 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1070 for LOIs [2019-10-07 14:34:39,687 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:40,144 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:40,265 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:40,995 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:41,464 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:41,914 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:42,028 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:42,774 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:43,243 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:43,685 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:43,929 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:44,731 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:45,950 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1070 [2019-10-07 14:34:46,443 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:46,672 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:47,494 WARN L191 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:47,947 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:48,391 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:48,502 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:49,226 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:49,673 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:50,112 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:50,225 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:50,960 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:51,410 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:51,859 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:51,973 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:52,703 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:53,141 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:53,580 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:53,692 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:54,426 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:54,866 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:55,306 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:55,420 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:56,158 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:56,608 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:57,049 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:57,161 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:57,891 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:58,332 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:58,782 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:34:58,897 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:59,627 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:00,067 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:35:00,505 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:35:00,617 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:01,353 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:01,803 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:35:02,243 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:35:02,355 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:03,085 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:04,595 WARN L191 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:05,326 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:05,446 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:06,179 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:07,722 WARN L191 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:35:08,450 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:08,577 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:09,314 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:10,044 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:10,773 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:10,885 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:11,622 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:12,407 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:35:13,142 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:35:13,262 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:13,999 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:15,081 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:15,822 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:15,942 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:16,690 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:17,933 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:35:18,671 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:35:18,785 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:19,519 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:20,263 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1237 [2019-10-07 14:35:21,007 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1237 [2019-10-07 14:35:21,122 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:21,876 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1237 [2019-10-07 14:35:22,637 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:23,383 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:23,500 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:24,256 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:25,026 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:25,775 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:25,898 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:26,638 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:27,393 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:28,136 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:28,397 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:29,231 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:29,971 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:30,708 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:30,824 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:31,562 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:32,900 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:35:33,624 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:33,853 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:34,689 WARN L191 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:36,001 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:35:36,735 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:36,855 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:37,594 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:38,309 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:39,038 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:39,150 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:39,874 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:41,138 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:35:41,883 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:35:42,000 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:42,758 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:43,986 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:35:44,715 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:35:44,833 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:45,559 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:46,861 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1232 DAG size of output: 1230 [2019-10-07 14:35:47,583 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:35:47,704 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:48,430 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:49,647 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1230 [2019-10-07 14:35:50,359 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:35:50,482 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:51,197 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:52,399 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1232 [2019-10-07 14:35:53,123 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:53,240 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:53,956 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:35:55,262 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:35:55,977 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:56,091 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:56,801 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:58,085 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:35:58,796 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:58,913 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:59,624 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:00,335 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:01,048 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:01,158 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:01,863 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:03,182 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:36:03,900 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:04,014 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:04,731 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:06,010 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:36:06,718 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:06,833 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:07,542 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:08,258 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:08,970 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:09,080 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:09,794 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:11,104 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:36:11,840 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:11,974 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:12,689 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:13,988 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:36:14,699 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:14,817 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:15,529 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:16,244 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:16,959 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:17,072 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:17,788 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:19,003 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1232 [2019-10-07 14:36:19,718 WARN L191 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:19,836 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:20,540 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:21,809 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:36:22,515 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:22,630 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:23,340 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:24,615 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:36:25,324 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:25,437 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:26,147 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:26,856 WARN L191 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:27,567 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:27,677 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:28,384 WARN L191 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:29,715 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:36:30,429 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:30,547 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:31,263 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:32,546 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:36:33,258 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:33,381 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:34,104 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:35,403 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:36:36,127 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:36,239 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:36,969 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:38,248 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:36:38,968 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:36:39,101 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:39,816 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:41,103 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:36:41,824 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:41,938 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:42,654 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:36:43,903 WARN L191 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1232 [2019-10-07 14:36:44,659 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:44,775 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:45,508 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:36:46,815 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:36:47,551 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:47,669 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:48,394 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:36:49,736 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:36:50,456 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:50,569 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:51,275 WARN L191 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:52,767 WARN L191 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:36:53,494 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:53,608 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:54,333 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:55,056 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:55,793 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:55,904 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:36:56,638 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:36:57,973 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:36:58,700 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:36:58,817 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:36:59,550 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:37:00,878 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:37:01,607 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:37:01,723 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:37:02,453 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:37:03,783 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:37:04,522 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:04,639 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:37:05,365 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:06,664 WARN L191 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:37:07,386 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:07,500 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:37:08,224 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:08,951 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:09,690 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:09,800 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:37:10,541 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:11,803 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:37:12,544 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:37:12,666 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:37:13,416 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:37:14,642 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:37:15,389 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:37:15,505 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:37:16,248 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:37:16,983 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:37:17,732 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:37:17,849 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:37:18,588 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:37:19,898 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:37:20,659 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:37:20,784 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:37:21,520 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:37:22,827 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1236 DAG size of output: 1232 [2019-10-07 14:37:23,556 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:37:23,695 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:37:24,440 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1234 [2019-10-07 14:37:25,785 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:37:26,516 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:26,631 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:37:27,355 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:28,670 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:37:29,393 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:29,516 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:37:30,258 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:30,267 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1092 for LOIs [2019-10-07 14:37:30,792 WARN L191 SmtUtils]: Spent 524.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:37:31,275 WARN L191 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:37:31,394 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:37:32,118 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:32,130 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1042 for LOIs [2019-10-07 14:37:32,544 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 1042 [2019-10-07 14:37:32,943 WARN L191 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 1042 [2019-10-07 14:37:33,059 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:37:33,801 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:37:34,069 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:37:34,071 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 14:37:34,078 INFO L168 Benchmark]: Toolchain (without parser) took 416036.42 ms. Allocated memory was 136.3 MB in the beginning and 3.6 GB in the end (delta: 3.5 GB). Free memory was 98.4 MB in the beginning and 944.3 MB in the end (delta: -845.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2019-10-07 14:37:34,079 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 14:37:34,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1035.16 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 98.2 MB in the beginning and 139.8 MB in the end (delta: -41.6 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. [2019-10-07 14:37:34,079 INFO L168 Benchmark]: Boogie Preprocessor took 181.40 ms. Allocated memory is still 201.3 MB. Free memory was 139.8 MB in the beginning and 130.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-07 14:37:34,080 INFO L168 Benchmark]: RCFGBuilder took 5488.74 ms. Allocated memory was 201.3 MB in the beginning and 312.5 MB in the end (delta: 111.1 MB). Free memory was 130.1 MB in the beginning and 75.5 MB in the end (delta: 54.6 MB). Peak memory consumption was 165.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:37:34,080 INFO L168 Benchmark]: TraceAbstraction took 409322.94 ms. Allocated memory was 312.5 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 72.0 MB in the beginning and 944.3 MB in the end (delta: -872.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:37:34,082 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1035.16 ms. Allocated memory was 136.3 MB in the beginning and 201.3 MB in the end (delta: 65.0 MB). Free memory was 98.2 MB in the beginning and 139.8 MB in the end (delta: -41.6 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.40 ms. Allocated memory is still 201.3 MB. Free memory was 139.8 MB in the beginning and 130.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5488.74 ms. Allocated memory was 201.3 MB in the beginning and 312.5 MB in the end (delta: 111.1 MB). Free memory was 130.1 MB in the beginning and 75.5 MB in the end (delta: 54.6 MB). Peak memory consumption was 165.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 409322.94 ms. Allocated memory was 312.5 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 72.0 MB in the beginning and 944.3 MB in the end (delta: -872.3 MB). Peak memory consumption was 2.4 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...