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_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:28:34,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:28:34,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:28:34,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:28:34,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:28:34,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:28:34,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:28:34,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:28:34,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:28:34,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:28:34,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:28:34,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:28:34,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:28:35,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:28:35,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:28:35,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:28:35,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:28:35,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:28:35,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:28:35,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:28:35,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:28:35,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:28:35,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:28:35,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:28:35,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:28:35,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:28:35,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:28:35,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:28:35,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:28:35,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:28:35,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:28:35,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:28:35,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:28:35,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:28:35,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:28:35,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:28:35,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:28:35,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:28:35,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:28:35,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:28:35,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:28:35,030 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 14:28:35,055 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:28:35,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:28:35,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:28:35,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:28:35,057 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:28:35,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:28:35,058 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:28:35,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:28:35,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:28:35,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:28:35,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:28:35,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:28:35,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:28:35,061 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:28:35,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:28:35,062 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:28:35,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:28:35,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:28:35,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:28:35,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:28:35,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:28:35,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:28:35,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:28:35,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:28:35,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:28:35,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:28:35,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:28:35,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:28:35,065 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 14:28:35,386 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:28:35,399 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:28:35,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:28:35,404 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:28:35,404 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:28:35,405 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product27.cil.c [2019-10-07 14:28:35,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e85a503/a9c162304e594435a0a48dd5cfc1cf95/FLAG3b48124da [2019-10-07 14:28:36,185 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:28:36,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product27.cil.c [2019-10-07 14:28:36,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e85a503/a9c162304e594435a0a48dd5cfc1cf95/FLAG3b48124da [2019-10-07 14:28:36,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e85a503/a9c162304e594435a0a48dd5cfc1cf95 [2019-10-07 14:28:36,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:28:36,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:28:36,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:28:36,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:28:36,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:28:36,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:28:36" (1/1) ... [2019-10-07 14:28:36,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfc0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:36, skipping insertion in model container [2019-10-07 14:28:36,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:28:36" (1/1) ... [2019-10-07 14:28:36,365 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:28:36,441 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:28:37,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:28:37,231 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:28:37,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:28:37,446 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:28:37,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37 WrapperNode [2019-10-07 14:28:37,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:28:37,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:28:37,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:28:37,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:28:37,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37" (1/1) ... [2019-10-07 14:28:37,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37" (1/1) ... [2019-10-07 14:28:37,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37" (1/1) ... [2019-10-07 14:28:37,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37" (1/1) ... [2019-10-07 14:28:37,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37" (1/1) ... [2019-10-07 14:28:37,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37" (1/1) ... [2019-10-07 14:28:37,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37" (1/1) ... [2019-10-07 14:28:37,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:28:37,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:28:37,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:28:37,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:28:37,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37" (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 14:28:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:28:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 14:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:28:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:28:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:28:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:28:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:28:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:28:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:28:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:28:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:28:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:28:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:28:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:28:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:28:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:28:37,739 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:28:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:28:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:28:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:28:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:28:37,740 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:28:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:28:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:28:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:28:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:28:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:28:37,741 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:28:37,742 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:28:37,742 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:28:37,742 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:28:37,742 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:28:37,742 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:28:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:28:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:28:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:28:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:28:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:28:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:28:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:28:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:28:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:28:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:28:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:28:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:28:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:28:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:28:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:28:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:28:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:28:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:28:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:28:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:28:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:28:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:28:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:28:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:28:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:28:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:28:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:28:37,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:28:37,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:28:37,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:28:37,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:28:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:28:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:28:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:28:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:28:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:28:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:28:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:28:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:28:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:28:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:28:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:28:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:28:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:28:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:28:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:28:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:28:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:28:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:28:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:28:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:28:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:28:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:28:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:28:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:28:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:28:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:28:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:28:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 14:28:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:28:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:28:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:28:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:28:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:28:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:28:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:28:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:28:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:28:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:28:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:28:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:28:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:28:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:28:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:28:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:28:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:28:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:28:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:28:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:28:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:28:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:28:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:28:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:28:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:28:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:28:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:28:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:28:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:28:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:28:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:28:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:28:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:28:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:28:37,760 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:28:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:28:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:28:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:28:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:28:37,761 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:28:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:28:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:28:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:28:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:28:37,762 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:28:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:28:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:28:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:28:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:28:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:28:37,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:28:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:28:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:28:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:28:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:28:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:28:37,764 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:28:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:28:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:28:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:28:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:28:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:28:37,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:28:37,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:28:42,566 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:28:42,567 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:28:42,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:28:42 BoogieIcfgContainer [2019-10-07 14:28:42,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:28:42,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:28:42,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:28:42,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:28:42,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:28:36" (1/3) ... [2019-10-07 14:28:42,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6898e937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:28:42, skipping insertion in model container [2019-10-07 14:28:42,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:28:37" (2/3) ... [2019-10-07 14:28:42,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6898e937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:28:42, skipping insertion in model container [2019-10-07 14:28:42,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:28:42" (3/3) ... [2019-10-07 14:28:42,577 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2019-10-07 14:28:42,587 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:28:42,597 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:28:42,609 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:28:42,643 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:28:42,643 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:28:42,643 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:28:42,643 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:28:42,644 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:28:42,644 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:28:42,644 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:28:42,644 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:28:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states. [2019-10-07 14:28:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:28:42,701 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:42,703 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 14:28:42,705 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:42,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:42,712 INFO L82 PathProgramCache]: Analyzing trace with hash -928932607, now seen corresponding path program 1 times [2019-10-07 14:28:42,721 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:42,721 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:42,722 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:42,722 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:43,549 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 14:28:43,550 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:43,550 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:43,550 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 14:28:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:44,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:28:44,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:44,288 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 14:28:44,288 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:44,494 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 14:28:44,495 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:28:44,495 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2019-10-07 14:28:44,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:28:44,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:28:44,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:28:44,528 INFO L87 Difference]: Start difference. First operand 600 states. Second operand 4 states. [2019-10-07 14:28:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:45,986 INFO L93 Difference]: Finished difference Result 1716 states and 2631 transitions. [2019-10-07 14:28:45,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:28:45,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-07 14:28:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:46,024 INFO L225 Difference]: With dead ends: 1716 [2019-10-07 14:28:46,025 INFO L226 Difference]: Without dead ends: 1238 [2019-10-07 14:28:46,037 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 14:28:46,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2019-10-07 14:28:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1197. [2019-10-07 14:28:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2019-10-07 14:28:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1811 transitions. [2019-10-07 14:28:46,306 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1811 transitions. Word has length 119 [2019-10-07 14:28:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:46,308 INFO L462 AbstractCegarLoop]: Abstraction has 1197 states and 1811 transitions. [2019-10-07 14:28:46,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:28:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1811 transitions. [2019-10-07 14:28:46,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:28:46,343 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:46,343 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 14:28:46,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:46,555 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:46,556 INFO L82 PathProgramCache]: Analyzing trace with hash 512852373, now seen corresponding path program 1 times [2019-10-07 14:28:46,556 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:46,556 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:46,556 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:46,557 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:46,860 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 14:28:46,861 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:46,861 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:28:46,861 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:28:46,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:28:46,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:28:46,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:28:46,868 INFO L87 Difference]: Start difference. First operand 1197 states and 1811 transitions. Second operand 7 states. [2019-10-07 14:28:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:49,658 INFO L93 Difference]: Finished difference Result 4586 states and 7122 transitions. [2019-10-07 14:28:49,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:28:49,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-10-07 14:28:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:49,688 INFO L225 Difference]: With dead ends: 4586 [2019-10-07 14:28:49,689 INFO L226 Difference]: Without dead ends: 3420 [2019-10-07 14:28:49,699 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:28:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2019-10-07 14:28:49,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 3318. [2019-10-07 14:28:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3318 states. [2019-10-07 14:28:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 5136 transitions. [2019-10-07 14:28:49,926 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 5136 transitions. Word has length 119 [2019-10-07 14:28:49,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:49,927 INFO L462 AbstractCegarLoop]: Abstraction has 3318 states and 5136 transitions. [2019-10-07 14:28:49,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:28:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 5136 transitions. [2019-10-07 14:28:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:28:49,940 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:49,941 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 14:28:49,942 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:49,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:49,942 INFO L82 PathProgramCache]: Analyzing trace with hash 324873346, now seen corresponding path program 1 times [2019-10-07 14:28:49,942 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:49,943 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:49,943 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:49,943 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:50,228 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 14:28:50,228 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:50,228 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:50,228 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 14:28:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:50,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 3016 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:28:50,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:50,930 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 14:28:50,931 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:51,098 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 14:28:51,099 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:28:51,099 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:28:51,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:28:51,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:28:51,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:28:51,102 INFO L87 Difference]: Start difference. First operand 3318 states and 5136 transitions. Second operand 3 states. [2019-10-07 14:28:51,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:51,359 INFO L93 Difference]: Finished difference Result 7706 states and 12080 transitions. [2019-10-07 14:28:51,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:28:51,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-07 14:28:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:51,411 INFO L225 Difference]: With dead ends: 7706 [2019-10-07 14:28:51,412 INFO L226 Difference]: Without dead ends: 4419 [2019-10-07 14:28:51,442 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 14:28:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2019-10-07 14:28:51,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 3318. [2019-10-07 14:28:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3318 states. [2019-10-07 14:28:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 5124 transitions. [2019-10-07 14:28:51,724 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 5124 transitions. Word has length 119 [2019-10-07 14:28:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:51,727 INFO L462 AbstractCegarLoop]: Abstraction has 3318 states and 5124 transitions. [2019-10-07 14:28:51,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:28:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 5124 transitions. [2019-10-07 14:28:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:28:51,733 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:51,733 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 14:28:51,942 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:51,943 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:51,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1445388631, now seen corresponding path program 1 times [2019-10-07 14:28:51,944 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:51,944 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:51,944 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:51,944 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:52,218 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2019-10-07 14:28:52,325 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 14:28:52,326 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:52,326 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:28:52,326 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 14:28:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:53,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:28:53,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:28:53,213 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 14:28:53,213 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:28:53,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:28:53,538 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 14:28:53,539 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:28:53,539 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-07 14:28:53,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:28:53,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:28:53,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:28:53,541 INFO L87 Difference]: Start difference. First operand 3318 states and 5124 transitions. Second operand 6 states. [2019-10-07 14:28:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:55,184 INFO L93 Difference]: Finished difference Result 8696 states and 13655 transitions. [2019-10-07 14:28:55,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:28:55,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-10-07 14:28:55,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:55,241 INFO L225 Difference]: With dead ends: 8696 [2019-10-07 14:28:55,241 INFO L226 Difference]: Without dead ends: 5409 [2019-10-07 14:28:55,278 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:28:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5409 states. [2019-10-07 14:28:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5409 to 5371. [2019-10-07 14:28:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5371 states. [2019-10-07 14:28:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5371 states to 5371 states and 8143 transitions. [2019-10-07 14:28:55,582 INFO L78 Accepts]: Start accepts. Automaton has 5371 states and 8143 transitions. Word has length 120 [2019-10-07 14:28:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:28:55,582 INFO L462 AbstractCegarLoop]: Abstraction has 5371 states and 8143 transitions. [2019-10-07 14:28:55,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:28:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5371 states and 8143 transitions. [2019-10-07 14:28:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-07 14:28:55,587 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:28:55,588 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 14:28:55,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:28:55,800 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:28:55,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:28:55,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1195362687, now seen corresponding path program 1 times [2019-10-07 14:28:55,800 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:28:55,801 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:55,801 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:55,801 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:28:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:28:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:28:56,022 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 14:28:56,022 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:28:56,022 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:28:56,023 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:28:56,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:28:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:28:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:28:56,024 INFO L87 Difference]: Start difference. First operand 5371 states and 8143 transitions. Second operand 10 states. [2019-10-07 14:28:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:28:59,331 INFO L93 Difference]: Finished difference Result 19676 states and 30693 transitions. [2019-10-07 14:28:59,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 14:28:59,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-10-07 14:28:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:28:59,498 INFO L225 Difference]: With dead ends: 19676 [2019-10-07 14:28:59,498 INFO L226 Difference]: Without dead ends: 14336 [2019-10-07 14:28:59,549 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 14:28:59,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14336 states. [2019-10-07 14:29:00,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14336 to 14006. [2019-10-07 14:29:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14006 states. [2019-10-07 14:29:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14006 states to 14006 states and 21673 transitions. [2019-10-07 14:29:00,520 INFO L78 Accepts]: Start accepts. Automaton has 14006 states and 21673 transitions. Word has length 125 [2019-10-07 14:29:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:00,521 INFO L462 AbstractCegarLoop]: Abstraction has 14006 states and 21673 transitions. [2019-10-07 14:29:00,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:29:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 14006 states and 21673 transitions. [2019-10-07 14:29:00,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-07 14:29:00,525 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:00,526 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 14:29:00,526 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:00,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1826143901, now seen corresponding path program 1 times [2019-10-07 14:29:00,527 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:00,529 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:00,529 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:00,529 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:00,778 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 14:29:00,778 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:00,778 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:29:00,779 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 14:29:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:01,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-07 14:29:01,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:29:01,574 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 14:29:01,575 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:29:01,867 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 14:29:01,869 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:29:01,869 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-10-07 14:29:01,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:29:01,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:29:01,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:29:01,870 INFO L87 Difference]: Start difference. First operand 14006 states and 21673 transitions. Second operand 7 states. [2019-10-07 14:29:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:05,064 INFO L93 Difference]: Finished difference Result 29278 states and 45280 transitions. [2019-10-07 14:29:05,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:29:05,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-10-07 14:29:05,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:05,157 INFO L225 Difference]: With dead ends: 29278 [2019-10-07 14:29:05,157 INFO L226 Difference]: Without dead ends: 15303 [2019-10-07 14:29:05,215 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-07 14:29:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15303 states. [2019-10-07 14:29:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15303 to 15256. [2019-10-07 14:29:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15256 states. [2019-10-07 14:29:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15256 states to 15256 states and 23358 transitions. [2019-10-07 14:29:05,977 INFO L78 Accepts]: Start accepts. Automaton has 15256 states and 23358 transitions. Word has length 131 [2019-10-07 14:29:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:05,978 INFO L462 AbstractCegarLoop]: Abstraction has 15256 states and 23358 transitions. [2019-10-07 14:29:05,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:29:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 15256 states and 23358 transitions. [2019-10-07 14:29:05,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-07 14:29:05,982 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:05,982 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, 1, 1, 1, 1, 1] [2019-10-07 14:29:06,191 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:29:06,192 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:06,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1817781731, now seen corresponding path program 1 times [2019-10-07 14:29:06,193 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:06,193 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:06,193 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:06,193 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 14:29:06,400 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:06,400 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:29:06,400 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:29:06,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:29:06,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:29:06,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:29:06,402 INFO L87 Difference]: Start difference. First operand 15256 states and 23358 transitions. Second operand 10 states. [2019-10-07 14:29:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:06,846 INFO L93 Difference]: Finished difference Result 28525 states and 43931 transitions. [2019-10-07 14:29:06,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 14:29:06,846 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 136 [2019-10-07 14:29:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:06,949 INFO L225 Difference]: With dead ends: 28525 [2019-10-07 14:29:06,950 INFO L226 Difference]: Without dead ends: 15537 [2019-10-07 14:29:07,010 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:29:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15537 states. [2019-10-07 14:29:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15537 to 15537. [2019-10-07 14:29:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15537 states. [2019-10-07 14:29:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15537 states to 15537 states and 23743 transitions. [2019-10-07 14:29:07,931 INFO L78 Accepts]: Start accepts. Automaton has 15537 states and 23743 transitions. Word has length 136 [2019-10-07 14:29:07,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:07,932 INFO L462 AbstractCegarLoop]: Abstraction has 15537 states and 23743 transitions. [2019-10-07 14:29:07,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:29:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 15537 states and 23743 transitions. [2019-10-07 14:29:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-07 14:29:07,939 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:07,939 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 14:29:07,939 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:07,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1642607817, now seen corresponding path program 1 times [2019-10-07 14:29:07,940 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:07,940 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:07,940 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:07,940 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:08,302 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 14:29:08,302 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:08,303 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:29:08,303 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:29:08,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:29:08,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:29:08,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:29:08,305 INFO L87 Difference]: Start difference. First operand 15537 states and 23743 transitions. Second operand 14 states. [2019-10-07 14:29:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:18,202 INFO L93 Difference]: Finished difference Result 39785 states and 62003 transitions. [2019-10-07 14:29:18,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-07 14:29:18,203 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2019-10-07 14:29:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:18,405 INFO L225 Difference]: With dead ends: 39785 [2019-10-07 14:29:18,406 INFO L226 Difference]: Without dead ends: 27784 [2019-10-07 14:29:18,468 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 14:29:18,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27784 states. [2019-10-07 14:29:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27784 to 27158. [2019-10-07 14:29:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27158 states. [2019-10-07 14:29:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27158 states to 27158 states and 41818 transitions. [2019-10-07 14:29:19,796 INFO L78 Accepts]: Start accepts. Automaton has 27158 states and 41818 transitions. Word has length 140 [2019-10-07 14:29:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:19,797 INFO L462 AbstractCegarLoop]: Abstraction has 27158 states and 41818 transitions. [2019-10-07 14:29:19,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:29:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 27158 states and 41818 transitions. [2019-10-07 14:29:19,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-07 14:29:19,803 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:19,804 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 14:29:19,804 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:19,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:19,804 INFO L82 PathProgramCache]: Analyzing trace with hash -540786397, now seen corresponding path program 1 times [2019-10-07 14:29:19,804 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:19,805 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:19,805 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:19,805 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:20,029 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 14:29:20,029 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:20,030 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:29:20,030 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 14:29:20,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:29:20,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:29:20,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:29:20,032 INFO L87 Difference]: Start difference. First operand 27158 states and 41818 transitions. Second operand 8 states. [2019-10-07 14:29:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:21,232 INFO L93 Difference]: Finished difference Result 39315 states and 60678 transitions. [2019-10-07 14:29:21,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:29:21,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 167 [2019-10-07 14:29:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:21,431 INFO L225 Difference]: With dead ends: 39315 [2019-10-07 14:29:21,432 INFO L226 Difference]: Without dead ends: 27254 [2019-10-07 14:29:21,514 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 14:29:21,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27254 states. [2019-10-07 14:29:23,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27254 to 27200. [2019-10-07 14:29:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27200 states. [2019-10-07 14:29:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27200 states to 27200 states and 41846 transitions. [2019-10-07 14:29:23,340 INFO L78 Accepts]: Start accepts. Automaton has 27200 states and 41846 transitions. Word has length 167 [2019-10-07 14:29:23,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:23,340 INFO L462 AbstractCegarLoop]: Abstraction has 27200 states and 41846 transitions. [2019-10-07 14:29:23,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:29:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 27200 states and 41846 transitions. [2019-10-07 14:29:23,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-07 14:29:23,353 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:23,354 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 14:29:23,354 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:23,355 INFO L82 PathProgramCache]: Analyzing trace with hash 346004961, now seen corresponding path program 1 times [2019-10-07 14:29:23,355 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:23,355 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:23,355 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:23,355 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:23,681 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 14:29:23,681 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:23,682 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:29:23,682 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:29:23,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:29:23,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:29:23,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:29:23,684 INFO L87 Difference]: Start difference. First operand 27200 states and 41846 transitions. Second operand 14 states. [2019-10-07 14:29:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:37,407 INFO L93 Difference]: Finished difference Result 56138 states and 89772 transitions. [2019-10-07 14:29:37,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-07 14:29:37,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 171 [2019-10-07 14:29:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:37,752 INFO L225 Difference]: With dead ends: 56138 [2019-10-07 14:29:37,752 INFO L226 Difference]: Without dead ends: 56107 [2019-10-07 14:29:37,799 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 14:29:37,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56107 states. [2019-10-07 14:29:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56107 to 54394. [2019-10-07 14:29:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54394 states. [2019-10-07 14:29:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54394 states to 54394 states and 85145 transitions. [2019-10-07 14:29:40,082 INFO L78 Accepts]: Start accepts. Automaton has 54394 states and 85145 transitions. Word has length 171 [2019-10-07 14:29:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:40,083 INFO L462 AbstractCegarLoop]: Abstraction has 54394 states and 85145 transitions. [2019-10-07 14:29:40,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:29:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 54394 states and 85145 transitions. [2019-10-07 14:29:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-07 14:29:40,096 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:40,097 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 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 14:29:40,097 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:40,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1783487147, now seen corresponding path program 1 times [2019-10-07 14:29:40,098 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:40,098 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:40,098 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:40,098 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-07 14:29:40,315 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:40,316 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:29:40,316 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 14:29:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:41,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 3458 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:29:41,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:29:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:29:41,516 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:29:41,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:29:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-07 14:29:42,196 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:29:42,197 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:29:42,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:29:42,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:29:42,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:29:42,201 INFO L87 Difference]: Start difference. First operand 54394 states and 85145 transitions. Second operand 9 states. [2019-10-07 14:29:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:53,182 INFO L93 Difference]: Finished difference Result 139813 states and 222032 transitions. [2019-10-07 14:29:53,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:29:53,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 201 [2019-10-07 14:29:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:53,899 INFO L225 Difference]: With dead ends: 139813 [2019-10-07 14:29:53,899 INFO L226 Difference]: Without dead ends: 85450 [2019-10-07 14:29:54,047 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 392 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:29:54,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85450 states. [2019-10-07 14:29:59,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85450 to 84140. [2019-10-07 14:29:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84140 states. [2019-10-07 14:29:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84140 states to 84140 states and 132581 transitions. [2019-10-07 14:29:59,809 INFO L78 Accepts]: Start accepts. Automaton has 84140 states and 132581 transitions. Word has length 201 [2019-10-07 14:29:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:59,809 INFO L462 AbstractCegarLoop]: Abstraction has 84140 states and 132581 transitions. [2019-10-07 14:29:59,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:29:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 84140 states and 132581 transitions. [2019-10-07 14:29:59,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-07 14:29:59,827 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:59,828 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 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 14:30:00,036 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:00,037 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:00,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:00,037 INFO L82 PathProgramCache]: Analyzing trace with hash 146128922, now seen corresponding path program 1 times [2019-10-07 14:30:00,037 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:00,037 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:00,038 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:00,038 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:00,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-07 14:30:00,265 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:00,265 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:00,266 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 14:30:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:00,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 3501 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:30:00,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-07 14:30:01,005 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-07 14:30:01,252 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:30:01,252 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2019-10-07 14:30:01,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:30:01,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:30:01,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:30:01,255 INFO L87 Difference]: Start difference. First operand 84140 states and 132581 transitions. Second operand 3 states. [2019-10-07 14:30:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:05,233 INFO L93 Difference]: Finished difference Result 199342 states and 317796 transitions. [2019-10-07 14:30:05,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:30:05,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-10-07 14:30:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:05,923 INFO L225 Difference]: With dead ends: 199342 [2019-10-07 14:30:05,923 INFO L226 Difference]: Without dead ends: 115233 [2019-10-07 14:30:09,538 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 14:30:09,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115233 states. [2019-10-07 14:30:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115233 to 114327. [2019-10-07 14:30:13,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114327 states. [2019-10-07 14:30:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114327 states to 114327 states and 180453 transitions. [2019-10-07 14:30:13,609 INFO L78 Accepts]: Start accepts. Automaton has 114327 states and 180453 transitions. Word has length 214 [2019-10-07 14:30:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:13,609 INFO L462 AbstractCegarLoop]: Abstraction has 114327 states and 180453 transitions. [2019-10-07 14:30:13,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:30:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 114327 states and 180453 transitions. [2019-10-07 14:30:13,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-07 14:30:13,626 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:13,627 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 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 14:30:13,838 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:13,839 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:13,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:13,839 INFO L82 PathProgramCache]: Analyzing trace with hash -6533326, now seen corresponding path program 1 times [2019-10-07 14:30:13,839 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:13,839 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:13,840 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:13,840 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-07 14:30:14,050 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:14,051 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:14,051 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 14:30:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:14,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 3516 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-07 14:30:14,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:30:15,098 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-10-07 14:30:15,602 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:30:15,602 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 10] total 18 [2019-10-07 14:30:15,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:30:15,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:30:15,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2019-10-07 14:30:15,605 INFO L87 Difference]: Start difference. First operand 114327 states and 180453 transitions. Second operand 9 states. [2019-10-07 14:30:26,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:26,219 INFO L93 Difference]: Finished difference Result 283664 states and 449275 transitions. [2019-10-07 14:30:26,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:30:26,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2019-10-07 14:30:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:27,142 INFO L225 Difference]: With dead ends: 283664 [2019-10-07 14:30:27,142 INFO L226 Difference]: Without dead ends: 203723 [2019-10-07 14:30:27,761 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 14:30:27,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203723 states. [2019-10-07 14:30:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203723 to 197813. [2019-10-07 14:30:34,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197813 states. [2019-10-07 14:30:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197813 states to 197813 states and 312401 transitions. [2019-10-07 14:30:34,986 INFO L78 Accepts]: Start accepts. Automaton has 197813 states and 312401 transitions. Word has length 219 [2019-10-07 14:30:34,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:34,987 INFO L462 AbstractCegarLoop]: Abstraction has 197813 states and 312401 transitions. [2019-10-07 14:30:34,987 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:30:34,987 INFO L276 IsEmpty]: Start isEmpty. Operand 197813 states and 312401 transitions. [2019-10-07 14:30:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-07 14:30:35,012 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:35,012 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 5, 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, 1, 1] [2019-10-07 14:30:35,221 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:35,222 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:35,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1078627795, now seen corresponding path program 1 times [2019-10-07 14:30:35,222 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:35,223 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:35,223 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:35,223 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-10-07 14:30:35,414 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:35,415 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:30:35,415 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:30:35,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:30:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:30:35,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:30:35,417 INFO L87 Difference]: Start difference. First operand 197813 states and 312401 transitions. Second operand 3 states. [2019-10-07 14:30:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:45,012 INFO L93 Difference]: Finished difference Result 334936 states and 530500 transitions. [2019-10-07 14:30:45,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:30:45,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2019-10-07 14:30:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:45,542 INFO L225 Difference]: With dead ends: 334936 [2019-10-07 14:30:45,542 INFO L226 Difference]: Without dead ends: 140273 [2019-10-07 14:30:45,920 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 14:30:46,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140273 states. [2019-10-07 14:30:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140273 to 137887. [2019-10-07 14:30:54,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137887 states. [2019-10-07 14:30:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137887 states to 137887 states and 215261 transitions. [2019-10-07 14:30:55,498 INFO L78 Accepts]: Start accepts. Automaton has 137887 states and 215261 transitions. Word has length 223 [2019-10-07 14:30:55,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:55,499 INFO L462 AbstractCegarLoop]: Abstraction has 137887 states and 215261 transitions. [2019-10-07 14:30:55,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:30:55,499 INFO L276 IsEmpty]: Start isEmpty. Operand 137887 states and 215261 transitions. [2019-10-07 14:30:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-07 14:30:55,520 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:55,520 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 5, 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 14:30:55,521 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:55,521 INFO L82 PathProgramCache]: Analyzing trace with hash 502229525, now seen corresponding path program 1 times [2019-10-07 14:30:55,521 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:55,521 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:55,522 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:55,522 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-10-07 14:30:55,819 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:55,819 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:55,820 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 14:30:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:56,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 3517 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-07 14:30:56,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-07 14:30:57,205 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-10-07 14:30:57,606 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:30:57,606 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17, 8] total 23 [2019-10-07 14:30:57,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 14:30:57,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 14:30:57,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:30:57,608 INFO L87 Difference]: Start difference. First operand 137887 states and 215261 transitions. Second operand 8 states. [2019-10-07 14:31:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:02,312 INFO L93 Difference]: Finished difference Result 190494 states and 298365 transitions. [2019-10-07 14:31:02,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:31:02,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 221 [2019-10-07 14:31:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:02,711 INFO L225 Difference]: With dead ends: 190494 [2019-10-07 14:31:02,711 INFO L226 Difference]: Without dead ends: 95622 [2019-10-07 14:31:02,936 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 14:31:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95622 states. [2019-10-07 14:31:06,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95622 to 95502. [2019-10-07 14:31:11,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95502 states. [2019-10-07 14:31:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95502 states to 95502 states and 148926 transitions. [2019-10-07 14:31:12,387 INFO L78 Accepts]: Start accepts. Automaton has 95502 states and 148926 transitions. Word has length 221 [2019-10-07 14:31:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:12,388 INFO L462 AbstractCegarLoop]: Abstraction has 95502 states and 148926 transitions. [2019-10-07 14:31:12,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 14:31:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 95502 states and 148926 transitions. [2019-10-07 14:31:12,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2019-10-07 14:31:12,414 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:12,415 INFO L385 BasicCegarLoop]: trace histogram [11, 7, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:12,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:12,632 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash -664601418, now seen corresponding path program 1 times [2019-10-07 14:31:12,633 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:12,633 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:12,633 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:12,633 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2019-10-07 14:31:12,952 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:12,952 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:12,952 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 14:31:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:13,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 4371 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:31:13,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2019-10-07 14:31:13,877 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2019-10-07 14:31:14,296 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:31:14,296 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9] total 11 [2019-10-07 14:31:14,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:31:14,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:31:14,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:31:14,298 INFO L87 Difference]: Start difference. First operand 95502 states and 148926 transitions. Second operand 4 states. [2019-10-07 14:31:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:17,121 INFO L93 Difference]: Finished difference Result 177832 states and 279006 transitions. [2019-10-07 14:31:17,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 14:31:17,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 372 [2019-10-07 14:31:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:17,433 INFO L225 Difference]: With dead ends: 177832 [2019-10-07 14:31:17,433 INFO L226 Difference]: Without dead ends: 88134 [2019-10-07 14:31:17,616 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:31:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88134 states. [2019-10-07 14:31:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88134 to 88020. [2019-10-07 14:31:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88020 states. [2019-10-07 14:31:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88020 states to 88020 states and 137102 transitions. [2019-10-07 14:31:21,261 INFO L78 Accepts]: Start accepts. Automaton has 88020 states and 137102 transitions. Word has length 372 [2019-10-07 14:31:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:21,262 INFO L462 AbstractCegarLoop]: Abstraction has 88020 states and 137102 transitions. [2019-10-07 14:31:21,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:31:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 88020 states and 137102 transitions. [2019-10-07 14:31:21,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-07 14:31:21,277 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:21,278 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 5, 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 14:31:21,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:21,479 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:21,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2073342355, now seen corresponding path program 1 times [2019-10-07 14:31:21,480 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:21,480 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:21,480 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:21,481 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2019-10-07 14:31:21,636 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:21,636 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:31:21,636 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:31:21,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:31:21,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:31:21,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:31:21,638 INFO L87 Difference]: Start difference. First operand 88020 states and 137102 transitions. Second operand 3 states. [2019-10-07 14:31:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:26,912 INFO L93 Difference]: Finished difference Result 167731 states and 262479 transitions. [2019-10-07 14:31:26,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:31:26,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2019-10-07 14:31:26,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:27,270 INFO L225 Difference]: With dead ends: 167731 [2019-10-07 14:31:27,270 INFO L226 Difference]: Without dead ends: 85515 [2019-10-07 14:31:27,438 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 14:31:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85515 states. [2019-10-07 14:31:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85515 to 85256. [2019-10-07 14:31:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85256 states. [2019-10-07 14:31:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85256 states to 85256 states and 132664 transitions. [2019-10-07 14:31:30,557 INFO L78 Accepts]: Start accepts. Automaton has 85256 states and 132664 transitions. Word has length 225 [2019-10-07 14:31:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:30,558 INFO L462 AbstractCegarLoop]: Abstraction has 85256 states and 132664 transitions. [2019-10-07 14:31:30,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:31:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 85256 states and 132664 transitions. [2019-10-07 14:31:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2019-10-07 14:31:30,568 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:30,568 INFO L385 BasicCegarLoop]: trace histogram [10, 7, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:31:30,568 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:30,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:30,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1280103287, now seen corresponding path program 1 times [2019-10-07 14:31:30,569 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:30,569 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:30,569 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:30,569 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2019-10-07 14:31:30,802 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:30,802 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:31,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 4356 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:31:31,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 193 proven. 20 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-10-07 14:31:31,862 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:32,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,439 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 14:31:32,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:31:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2019-10-07 14:31:32,660 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:31:32,703 INFO L162 IcfgInterpreter]: Started Sifa with 172 locations of interest [2019-10-07 14:31:32,704 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:31:32,710 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:31:32,718 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:31:32,718 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:32:15,948 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 756 [2019-10-07 14:32:23,197 WARN L191 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:32:23,652 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:32:24,036 WARN L191 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:32:24,262 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 842 [2019-10-07 14:32:24,774 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:32:25,246 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:32:25,703 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:32:26,229 WARN L191 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:32:27,275 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 1026 DAG size of output: 1024 [2019-10-07 14:32:27,722 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:32:28,252 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:32:28,709 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:32:29,167 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:32:29,667 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 14:32:29,685 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 379 for LOIs [2019-10-07 14:32:29,961 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:32:30,149 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 725 [2019-10-07 14:32:30,529 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 907 [2019-10-07 14:32:30,530 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1070 for LOIs [2019-10-07 14:32:30,966 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:31,407 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:31,523 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:32,261 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:32,715 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:33,158 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:33,387 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:34,182 WARN L191 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:34,666 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:35,103 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:35,216 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:35,934 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:36,755 WARN L191 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 1230 DAG size of output: 1070 [2019-10-07 14:32:37,197 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:37,401 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:38,149 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:38,621 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:39,059 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:39,169 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:39,902 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:40,352 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:40,809 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:40,921 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:41,636 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:42,064 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:42,494 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:42,606 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:43,339 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:43,773 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:44,203 WARN L191 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:44,311 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:45,019 WARN L191 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:45,451 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:45,880 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:45,992 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:46,722 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:47,148 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:47,600 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:47,711 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:48,445 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:48,886 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:49,328 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:49,439 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:50,168 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:50,599 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:51,066 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:51,177 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:51,929 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:52,369 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:52,815 WARN L191 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 1070 [2019-10-07 14:32:52,925 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:53,655 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:54,459 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:55,197 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:55,317 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:56,039 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:57,503 WARN L191 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:32:58,231 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:58,354 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:32:59,086 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:32:59,806 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:00,558 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:00,667 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:33:01,395 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:02,181 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:02,921 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:03,034 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:03,777 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:05,440 WARN L191 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:33:06,187 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:33:06,309 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:07,048 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:08,378 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:33:09,148 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:33:09,261 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:10,004 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:10,780 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1237 [2019-10-07 14:33:11,542 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1237 [2019-10-07 14:33:11,661 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:12,409 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1237 [2019-10-07 14:33:13,156 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:13,897 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:14,014 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:14,753 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:15,546 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:16,306 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:16,431 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:17,183 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:18,545 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1239 [2019-10-07 14:33:19,301 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:19,566 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:20,371 WARN L191 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:21,132 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:21,899 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:22,012 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:22,775 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:24,206 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:33:24,971 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:25,163 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:33:25,910 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:27,273 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:33:28,013 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:28,130 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:33:28,873 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:29,624 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:30,365 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:30,476 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:33:31,203 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:32,566 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:33:33,310 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:33,429 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:34,170 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:35,551 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:33:36,300 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:36,422 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:37,173 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:37,924 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:38,669 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:38,782 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:39,517 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:33:40,872 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1237 [2019-10-07 14:33:41,618 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1237 [2019-10-07 14:33:41,738 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:42,474 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1237 [2019-10-07 14:33:43,800 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1239 [2019-10-07 14:33:44,540 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:44,660 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:33:45,400 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:33:46,740 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:33:47,470 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:47,585 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:33:48,318 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:49,633 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:33:50,360 WARN L191 SmtUtils]: Spent 723.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:50,482 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:33:51,201 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:51,935 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:52,659 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:52,770 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:33:53,489 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:54,825 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:33:55,561 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:55,678 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:33:56,404 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:57,730 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:33:58,455 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:33:58,571 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:33:59,293 WARN L191 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:00,031 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:00,765 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:00,873 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:01,596 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:02,951 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:34:03,679 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:03,796 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:04,535 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:05,858 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:34:06,587 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:34:06,707 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:07,437 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:08,742 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:34:09,472 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:34:09,584 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:10,313 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:11,638 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1230 [2019-10-07 14:34:12,377 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:34:12,495 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:13,223 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:14,562 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:34:15,290 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:15,406 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:16,148 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:17,458 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:34:18,186 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:18,318 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:19,041 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:19,761 WARN L191 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:20,477 WARN L191 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:20,587 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:21,318 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:22,649 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:34:23,383 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:34:23,499 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:24,229 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:25,551 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:34:26,291 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:34:26,427 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:27,171 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:27,890 WARN L191 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:34:28,614 WARN L191 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:34:28,724 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:29,475 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:30,799 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1232 [2019-10-07 14:34:31,546 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:31,669 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:32,403 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:33,762 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1239 [2019-10-07 14:34:34,517 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:34:34,633 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:35,394 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:34:36,750 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:34:37,483 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:37,600 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:38,335 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:39,658 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:34:40,396 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:40,512 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:41,279 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:42,014 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:42,768 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:42,884 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:34:43,635 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:34:45,018 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:34:45,760 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:45,876 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:46,633 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:47,999 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:34:48,740 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:48,859 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:49,601 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:50,345 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:51,094 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:51,206 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:51,957 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:53,308 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1239 DAG size of output: 1232 [2019-10-07 14:34:54,050 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:54,166 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:54,908 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:34:56,270 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1239 [2019-10-07 14:34:57,029 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:34:57,147 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:34:57,897 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:34:59,257 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1239 [2019-10-07 14:35:00,026 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:00,150 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:00,901 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:02,376 WARN L191 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 1241 DAG size of output: 1239 [2019-10-07 14:35:03,127 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:03,243 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:03,983 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1239 [2019-10-07 14:35:05,342 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:35:06,080 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:06,200 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:06,939 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:08,276 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:35:09,007 WARN L191 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:09,122 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:09,860 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:10,598 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:11,339 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:11,449 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:12,186 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:13,566 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1232 [2019-10-07 14:35:14,320 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:14,455 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:15,206 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:16,813 WARN L191 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 1234 DAG size of output: 1230 [2019-10-07 14:35:17,563 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1230 [2019-10-07 14:35:17,688 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 435 [2019-10-07 14:35:18,426 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1232 [2019-10-07 14:35:19,772 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:35:20,517 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:20,633 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:21,365 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:22,750 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1230 DAG size of output: 1228 [2019-10-07 14:35:23,487 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:23,611 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:24,350 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:24,357 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1092 for LOIs [2019-10-07 14:35:24,836 WARN L191 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:35:25,321 WARN L191 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 1092 [2019-10-07 14:35:25,454 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:26,204 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:26,215 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1042 for LOIs [2019-10-07 14:35:26,604 WARN L191 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 1042 [2019-10-07 14:35:26,995 WARN L191 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 1042 [2019-10-07 14:35:27,107 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 432 [2019-10-07 14:35:27,833 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1228 [2019-10-07 14:35:28,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:35:28,116 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 14:35:28,123 INFO L168 Benchmark]: Toolchain (without parser) took 411773.75 ms. Allocated memory was 143.1 MB in the beginning and 3.3 GB in the end (delta: 3.2 GB). Free memory was 98.7 MB in the beginning and 753.1 MB in the end (delta: -654.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2019-10-07 14:35:28,123 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 14:35:28,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1094.21 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 98.5 MB in the beginning and 144.1 MB in the end (delta: -45.6 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:35:28,125 INFO L168 Benchmark]: Boogie Preprocessor took 209.22 ms. Allocated memory is still 201.3 MB. Free memory was 144.1 MB in the beginning and 134.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-07 14:35:28,126 INFO L168 Benchmark]: RCFGBuilder took 4911.30 ms. Allocated memory was 201.3 MB in the beginning and 321.9 MB in the end (delta: 120.6 MB). Free memory was 134.4 MB in the beginning and 101.1 MB in the end (delta: 33.3 MB). Peak memory consumption was 153.9 MB. Max. memory is 7.1 GB. [2019-10-07 14:35:28,126 INFO L168 Benchmark]: TraceAbstraction took 405552.35 ms. Allocated memory was 321.9 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 101.1 MB in the beginning and 753.1 MB in the end (delta: -652.1 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2019-10-07 14:35:28,133 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1094.21 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 98.5 MB in the beginning and 144.1 MB in the end (delta: -45.6 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 209.22 ms. Allocated memory is still 201.3 MB. Free memory was 144.1 MB in the beginning and 134.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4911.30 ms. Allocated memory was 201.3 MB in the beginning and 321.9 MB in the end (delta: 120.6 MB). Free memory was 134.4 MB in the beginning and 101.1 MB in the end (delta: 33.3 MB). Peak memory consumption was 153.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 405552.35 ms. Allocated memory was 321.9 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 101.1 MB in the beginning and 753.1 MB in the end (delta: -652.1 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...