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_spec2_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:21:17,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:21:17,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:21:17,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:21:17,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:21:17,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:21:17,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:21:17,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:21:17,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:21:17,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:21:17,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:21:17,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:21:17,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:21:17,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:21:17,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:21:17,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:21:17,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:21:17,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:21:17,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:21:17,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:21:17,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:21:17,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:21:17,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:21:17,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:21:17,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:21:17,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:21:17,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:21:17,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:21:17,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:21:17,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:21:17,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:21:17,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:21:17,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:21:17,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:21:17,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:21:17,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:21:17,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:21:17,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:21:17,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:21:17,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:21:17,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:21:17,811 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 14:21:17,844 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:21:17,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:21:17,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:21:17,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:21:17,846 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:21:17,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:21:17,849 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:21:17,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:21:17,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:21:17,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:21:17,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:21:17,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:21:17,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:21:17,850 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:21:17,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:21:17,851 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:21:17,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:21:17,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:21:17,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:21:17,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:21:17,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:21:17,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:21:17,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:21:17,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:21:17,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:21:17,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:21:17,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:21:17,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:21:17,856 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 14:21:18,127 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:21:18,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:21:18,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:21:18,145 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:21:18,146 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:21:18,146 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product31.cil.c [2019-10-07 14:21:18,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecf0ce8a/06a46ccf521745688f236bd438a04abc/FLAG3b410d700 [2019-10-07 14:21:18,843 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:21:18,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product31.cil.c [2019-10-07 14:21:18,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecf0ce8a/06a46ccf521745688f236bd438a04abc/FLAG3b410d700 [2019-10-07 14:21:19,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecf0ce8a/06a46ccf521745688f236bd438a04abc [2019-10-07 14:21:19,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:21:19,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:21:19,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:21:19,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:21:19,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:21:19,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:21:19" (1/1) ... [2019-10-07 14:21:19,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df463d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:19, skipping insertion in model container [2019-10-07 14:21:19,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:21:19" (1/1) ... [2019-10-07 14:21:19,057 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:21:19,134 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:21:19,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:21:19,841 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:21:20,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:21:20,092 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:21:20,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20 WrapperNode [2019-10-07 14:21:20,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:21:20,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:21:20,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:21:20,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:21:20,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20" (1/1) ... [2019-10-07 14:21:20,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20" (1/1) ... [2019-10-07 14:21:20,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20" (1/1) ... [2019-10-07 14:21:20,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20" (1/1) ... [2019-10-07 14:21:20,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20" (1/1) ... [2019-10-07 14:21:20,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20" (1/1) ... [2019-10-07 14:21:20,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20" (1/1) ... [2019-10-07 14:21:20,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:21:20,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:21:20,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:21:20,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:21:20,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20" (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 14:21:20,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:21:20,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:21:20,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:21:20,386 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:21:20,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:21:20,388 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:21:20,389 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:21:20,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:21:20,390 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:21:20,390 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:21:20,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:21:20,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:21:20,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:21:20,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:21:20,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:21:20,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:21:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:21:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:21:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:21:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:21:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:21:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:21:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:21:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:21:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:21:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:21:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:21:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:21:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:21:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:21:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:21:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:21:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:21:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:21:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:21:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:21:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:21:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:21:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:21:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:21:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:21:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:21:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:21:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 14:21:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:21:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:21:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:21:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:21:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:21:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:21:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:21:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:21:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:21:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:21:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:21:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 14:21:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:21:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:21:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:21:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:21:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 14:21:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:21:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:21:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:21:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:21:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:21:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:21:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:21:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:21:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:21:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:21:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:21:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:21:20,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:21:20,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:21:20,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:21:20,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:21:20,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:21:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:21:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:21:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:21:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:21:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:21:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:21:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:21:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:21:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:21:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:21:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:21:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:21:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:21:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:21:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:21:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:21:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:21:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:21:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:21:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-07 14:21:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-07 14:21:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-07 14:21:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-07 14:21:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:21:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:21:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:21:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:21:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:21:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:21:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:21:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:21:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:21:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:21:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:21:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:21:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:21:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:21:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:21:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:21:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:21:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:21:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:21:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:21:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:21:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:21:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:21:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:21:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:21:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:21:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:21:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:21:20,420 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:21:20,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:21:20,420 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:21:20,421 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:21:20,421 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:21:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:21:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:21:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:21:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:21:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:21:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:21:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 14:21:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:21:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:21:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:21:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:21:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:21:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:21:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-07 14:21:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:21:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:21:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:21:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-07 14:21:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:21:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:21:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:21:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:21:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:21:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:21:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:21:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:21:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:21:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:21:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:21:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:21:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:21:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:21:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:21:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:21:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:21:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:21:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:21:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:21:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:21:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:21:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:21:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:21:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:21:25,143 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:21:25,143 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:21:25,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:21:25 BoogieIcfgContainer [2019-10-07 14:21:25,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:21:25,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:21:25,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:21:25,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:21:25,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:21:19" (1/3) ... [2019-10-07 14:21:25,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66c5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:21:25, skipping insertion in model container [2019-10-07 14:21:25,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:21:20" (2/3) ... [2019-10-07 14:21:25,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d66c5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:21:25, skipping insertion in model container [2019-10-07 14:21:25,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:21:25" (3/3) ... [2019-10-07 14:21:25,153 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product31.cil.c [2019-10-07 14:21:25,162 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:21:25,171 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:21:25,182 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:21:25,214 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:21:25,214 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:21:25,214 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:21:25,214 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:21:25,214 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:21:25,214 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:21:25,214 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:21:25,215 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:21:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states. [2019-10-07 14:21:25,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-07 14:21:25,282 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:25,283 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:21:25,286 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:25,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:25,292 INFO L82 PathProgramCache]: Analyzing trace with hash -93894055, now seen corresponding path program 1 times [2019-10-07 14:21:25,300 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:25,300 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:25,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:25,300 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:21:25,932 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:25,933 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:25,933 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 14:21:25,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 14:21:25,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 14:21:25,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:21:25,956 INFO L87 Difference]: Start difference. First operand 601 states. Second operand 2 states. [2019-10-07 14:21:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:26,089 INFO L93 Difference]: Finished difference Result 504 states and 742 transitions. [2019-10-07 14:21:26,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 14:21:26,090 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-07 14:21:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:26,114 INFO L225 Difference]: With dead ends: 504 [2019-10-07 14:21:26,114 INFO L226 Difference]: Without dead ends: 470 [2019-10-07 14:21:26,119 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:21:26,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-07 14:21:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-10-07 14:21:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-10-07 14:21:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 691 transitions. [2019-10-07 14:21:26,215 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 691 transitions. Word has length 112 [2019-10-07 14:21:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:26,217 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 691 transitions. [2019-10-07 14:21:26,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 14:21:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 691 transitions. [2019-10-07 14:21:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-07 14:21:26,224 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:26,225 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:21:26,225 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:26,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:26,226 INFO L82 PathProgramCache]: Analyzing trace with hash -696682179, now seen corresponding path program 1 times [2019-10-07 14:21:26,226 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:26,226 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:26,226 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:26,226 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:21:26,520 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:26,520 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:26,520 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:21:26,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:21:26,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:21:26,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:21:26,523 INFO L87 Difference]: Start difference. First operand 470 states and 691 transitions. Second operand 7 states. [2019-10-07 14:21:30,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:30,667 INFO L93 Difference]: Finished difference Result 1337 states and 2010 transitions. [2019-10-07 14:21:30,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 14:21:30,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-07 14:21:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:30,690 INFO L225 Difference]: With dead ends: 1337 [2019-10-07 14:21:30,691 INFO L226 Difference]: Without dead ends: 909 [2019-10-07 14:21:30,707 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:21:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-10-07 14:21:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 884. [2019-10-07 14:21:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2019-10-07 14:21:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1325 transitions. [2019-10-07 14:21:30,869 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1325 transitions. Word has length 113 [2019-10-07 14:21:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:30,874 INFO L462 AbstractCegarLoop]: Abstraction has 884 states and 1325 transitions. [2019-10-07 14:21:30,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:21:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1325 transitions. [2019-10-07 14:21:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 14:21:30,882 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:30,882 INFO L385 BasicCegarLoop]: trace histogram [3, 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 14:21:30,883 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:30,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:30,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1598354599, now seen corresponding path program 1 times [2019-10-07 14:21:30,884 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:30,884 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:30,884 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:30,884 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:21:31,212 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:31,213 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:31,213 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:31,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:31,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:31,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:31,216 INFO L87 Difference]: Start difference. First operand 884 states and 1325 transitions. Second operand 4 states. [2019-10-07 14:21:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:33,108 INFO L93 Difference]: Finished difference Result 2636 states and 4048 transitions. [2019-10-07 14:21:33,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:33,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-07 14:21:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:33,135 INFO L225 Difference]: With dead ends: 2636 [2019-10-07 14:21:33,136 INFO L226 Difference]: Without dead ends: 1794 [2019-10-07 14:21:33,141 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:33,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2019-10-07 14:21:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1696. [2019-10-07 14:21:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2019-10-07 14:21:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2589 transitions. [2019-10-07 14:21:33,273 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2589 transitions. Word has length 117 [2019-10-07 14:21:33,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:33,274 INFO L462 AbstractCegarLoop]: Abstraction has 1696 states and 2589 transitions. [2019-10-07 14:21:33,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:33,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2589 transitions. [2019-10-07 14:21:33,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-07 14:21:33,280 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:33,280 INFO L385 BasicCegarLoop]: trace histogram [3, 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 14:21:33,281 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:33,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1991943500, now seen corresponding path program 1 times [2019-10-07 14:21:33,281 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:33,281 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:33,282 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:33,282 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:21:33,465 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:33,465 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:33,465 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:33,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:33,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:33,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:33,467 INFO L87 Difference]: Start difference. First operand 1696 states and 2589 transitions. Second operand 4 states. [2019-10-07 14:21:35,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:35,469 INFO L93 Difference]: Finished difference Result 5019 states and 7822 transitions. [2019-10-07 14:21:35,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:35,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-07 14:21:35,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:35,504 INFO L225 Difference]: With dead ends: 5019 [2019-10-07 14:21:35,505 INFO L226 Difference]: Without dead ends: 3366 [2019-10-07 14:21:35,518 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2019-10-07 14:21:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3245. [2019-10-07 14:21:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3245 states. [2019-10-07 14:21:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 5018 transitions. [2019-10-07 14:21:35,737 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 5018 transitions. Word has length 118 [2019-10-07 14:21:35,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:35,738 INFO L462 AbstractCegarLoop]: Abstraction has 3245 states and 5018 transitions. [2019-10-07 14:21:35,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:35,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 5018 transitions. [2019-10-07 14:21:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-07 14:21:35,742 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:35,742 INFO L385 BasicCegarLoop]: trace histogram [3, 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 14:21:35,742 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:35,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:35,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1622030967, now seen corresponding path program 1 times [2019-10-07 14:21:35,743 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:35,743 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:35,744 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:35,744 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:21:35,898 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:35,899 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:35,899 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:35,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:35,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:35,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:35,900 INFO L87 Difference]: Start difference. First operand 3245 states and 5018 transitions. Second operand 4 states. [2019-10-07 14:21:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:38,037 INFO L93 Difference]: Finished difference Result 9718 states and 15446 transitions. [2019-10-07 14:21:38,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:38,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-07 14:21:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:38,102 INFO L225 Difference]: With dead ends: 9718 [2019-10-07 14:21:38,102 INFO L226 Difference]: Without dead ends: 6518 [2019-10-07 14:21:38,127 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6518 states. [2019-10-07 14:21:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6518 to 6352. [2019-10-07 14:21:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6352 states. [2019-10-07 14:21:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6352 states to 6352 states and 9992 transitions. [2019-10-07 14:21:38,704 INFO L78 Accepts]: Start accepts. Automaton has 6352 states and 9992 transitions. Word has length 119 [2019-10-07 14:21:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:38,710 INFO L462 AbstractCegarLoop]: Abstraction has 6352 states and 9992 transitions. [2019-10-07 14:21:38,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6352 states and 9992 transitions. [2019-10-07 14:21:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-07 14:21:38,714 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:38,715 INFO L385 BasicCegarLoop]: trace histogram [3, 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] [2019-10-07 14:21:38,715 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:38,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:38,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1255326870, now seen corresponding path program 1 times [2019-10-07 14:21:38,716 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:38,716 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:38,716 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:38,717 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:38,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:21:38,900 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:38,900 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:38,901 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:38,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:38,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:38,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:38,902 INFO L87 Difference]: Start difference. First operand 6352 states and 9992 transitions. Second operand 4 states. [2019-10-07 14:21:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:41,155 INFO L93 Difference]: Finished difference Result 19141 states and 31425 transitions. [2019-10-07 14:21:41,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:41,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-07 14:21:41,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:41,266 INFO L225 Difference]: With dead ends: 19141 [2019-10-07 14:21:41,267 INFO L226 Difference]: Without dead ends: 12838 [2019-10-07 14:21:41,305 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12838 states. [2019-10-07 14:21:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12838 to 12583. [2019-10-07 14:21:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12583 states. [2019-10-07 14:21:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12583 states to 12583 states and 20350 transitions. [2019-10-07 14:21:42,831 INFO L78 Accepts]: Start accepts. Automaton has 12583 states and 20350 transitions. Word has length 120 [2019-10-07 14:21:42,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:42,831 INFO L462 AbstractCegarLoop]: Abstraction has 12583 states and 20350 transitions. [2019-10-07 14:21:42,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:42,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12583 states and 20350 transitions. [2019-10-07 14:21:42,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-07 14:21:42,835 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:42,835 INFO L385 BasicCegarLoop]: trace histogram [3, 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 14:21:42,835 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:42,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:42,836 INFO L82 PathProgramCache]: Analyzing trace with hash 259110507, now seen corresponding path program 1 times [2019-10-07 14:21:42,836 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:42,836 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:42,836 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:42,836 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:21:43,003 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:43,003 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:43,004 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:21:43,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:43,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:43,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:21:43,006 INFO L87 Difference]: Start difference. First operand 12583 states and 20350 transitions. Second operand 4 states. [2019-10-07 14:21:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:45,726 INFO L93 Difference]: Finished difference Result 38064 states and 66025 transitions. [2019-10-07 14:21:45,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:45,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-07 14:21:45,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:45,941 INFO L225 Difference]: With dead ends: 38064 [2019-10-07 14:21:45,941 INFO L226 Difference]: Without dead ends: 25526 [2019-10-07 14:21:46,037 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:46,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25526 states. [2019-10-07 14:21:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25526 to 24944. [2019-10-07 14:21:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24944 states. [2019-10-07 14:21:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24944 states to 24944 states and 41969 transitions. [2019-10-07 14:21:48,506 INFO L78 Accepts]: Start accepts. Automaton has 24944 states and 41969 transitions. Word has length 121 [2019-10-07 14:21:48,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:48,507 INFO L462 AbstractCegarLoop]: Abstraction has 24944 states and 41969 transitions. [2019-10-07 14:21:48,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:48,507 INFO L276 IsEmpty]: Start isEmpty. Operand 24944 states and 41969 transitions. [2019-10-07 14:21:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-07 14:21:48,524 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:48,524 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:21:48,525 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:48,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:48,525 INFO L82 PathProgramCache]: Analyzing trace with hash -247215098, now seen corresponding path program 1 times [2019-10-07 14:21:48,526 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:48,526 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:48,526 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:48,527 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:48,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-07 14:21:49,174 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:49,174 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:21:49,175 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 14:21:49,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:21:49,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:21:49,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:49,176 INFO L87 Difference]: Start difference. First operand 24944 states and 41969 transitions. Second operand 5 states. [2019-10-07 14:21:49,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:49,961 INFO L93 Difference]: Finished difference Result 50267 states and 87629 transitions. [2019-10-07 14:21:49,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:49,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2019-10-07 14:21:49,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:50,126 INFO L225 Difference]: With dead ends: 50267 [2019-10-07 14:21:50,126 INFO L226 Difference]: Without dead ends: 25366 [2019-10-07 14:21:50,215 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:21:50,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25366 states. [2019-10-07 14:21:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25366 to 25216. [2019-10-07 14:21:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25216 states. [2019-10-07 14:21:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25216 states to 25216 states and 42484 transitions. [2019-10-07 14:21:52,687 INFO L78 Accepts]: Start accepts. Automaton has 25216 states and 42484 transitions. Word has length 181 [2019-10-07 14:21:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:52,688 INFO L462 AbstractCegarLoop]: Abstraction has 25216 states and 42484 transitions. [2019-10-07 14:21:52,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:21:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 25216 states and 42484 transitions. [2019-10-07 14:21:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-07 14:21:52,698 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:52,698 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:21:52,698 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:52,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:52,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1712296642, now seen corresponding path program 1 times [2019-10-07 14:21:52,699 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:52,699 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:52,699 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:52,700 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:21:52,919 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:52,920 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:21:52,920 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 14:21:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:53,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 3437 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:21:53,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:21:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 14:21:53,821 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:21:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-07 14:21:54,376 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:21:54,376 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-07 14:21:54,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:21:54,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:21:54,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:21:54,377 INFO L87 Difference]: Start difference. First operand 25216 states and 42484 transitions. Second operand 4 states. [2019-10-07 14:21:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:21:55,703 INFO L93 Difference]: Finished difference Result 52885 states and 92656 transitions. [2019-10-07 14:21:55,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:21:55,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2019-10-07 14:21:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:21:56,223 INFO L225 Difference]: With dead ends: 52885 [2019-10-07 14:21:56,223 INFO L226 Difference]: Without dead ends: 27712 [2019-10-07 14:21:56,403 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 379 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-07 14:21:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27712 states. [2019-10-07 14:21:58,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27712 to 27712. [2019-10-07 14:21:58,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27712 states. [2019-10-07 14:21:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27712 states to 27712 states and 47156 transitions. [2019-10-07 14:21:58,523 INFO L78 Accepts]: Start accepts. Automaton has 27712 states and 47156 transitions. Word has length 190 [2019-10-07 14:21:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:21:58,524 INFO L462 AbstractCegarLoop]: Abstraction has 27712 states and 47156 transitions. [2019-10-07 14:21:58,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:21:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 27712 states and 47156 transitions. [2019-10-07 14:21:58,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-07 14:21:58,535 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:21:58,535 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:21:58,744 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:21:58,745 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:21:58,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:21:58,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1319304371, now seen corresponding path program 1 times [2019-10-07 14:21:58,746 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:21:58,746 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:58,746 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:58,746 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:21:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:21:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:21:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:21:59,024 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:21:59,024 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:21:59,025 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 14:22:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:00,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 3442 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:22:00,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-07 14:22:01,037 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-07 14:22:01,485 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:22:01,485 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:22:01,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:22:01,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:22:01,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:22:01,488 INFO L87 Difference]: Start difference. First operand 27712 states and 47156 transitions. Second operand 4 states. [2019-10-07 14:22:02,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:02,585 INFO L93 Difference]: Finished difference Result 57877 states and 101934 transitions. [2019-10-07 14:22:02,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:22:02,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2019-10-07 14:22:02,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:02,755 INFO L225 Difference]: With dead ends: 57877 [2019-10-07 14:22:02,755 INFO L226 Difference]: Without dead ends: 30208 [2019-10-07 14:22:02,836 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:22:02,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30208 states. [2019-10-07 14:22:04,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30208 to 30208. [2019-10-07 14:22:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30208 states. [2019-10-07 14:22:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30208 states to 30208 states and 51828 transitions. [2019-10-07 14:22:04,314 INFO L78 Accepts]: Start accepts. Automaton has 30208 states and 51828 transitions. Word has length 195 [2019-10-07 14:22:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:04,315 INFO L462 AbstractCegarLoop]: Abstraction has 30208 states and 51828 transitions. [2019-10-07 14:22:04,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:22:04,315 INFO L276 IsEmpty]: Start isEmpty. Operand 30208 states and 51828 transitions. [2019-10-07 14:22:04,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-07 14:22:04,325 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:04,325 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:04,536 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:04,537 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:04,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:04,537 INFO L82 PathProgramCache]: Analyzing trace with hash -701529507, now seen corresponding path program 1 times [2019-10-07 14:22:04,537 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:04,538 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:04,538 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:04,538 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:04,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-07 14:22:04,741 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:04,742 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:22:04,742 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 14:22:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:05,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 3446 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:22:05,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:22:05,543 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-07 14:22:05,974 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:22:05,975 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:22:05,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:22:05,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:22:05,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:22:05,976 INFO L87 Difference]: Start difference. First operand 30208 states and 51828 transitions. Second operand 4 states. [2019-10-07 14:22:06,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:06,993 INFO L93 Difference]: Finished difference Result 62869 states and 111212 transitions. [2019-10-07 14:22:06,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:22:06,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2019-10-07 14:22:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:07,167 INFO L225 Difference]: With dead ends: 62869 [2019-10-07 14:22:07,167 INFO L226 Difference]: Without dead ends: 32704 [2019-10-07 14:22:07,244 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 395 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:22:07,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32704 states. [2019-10-07 14:22:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32704 to 32704. [2019-10-07 14:22:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32704 states. [2019-10-07 14:22:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32704 states to 32704 states and 56500 transitions. [2019-10-07 14:22:08,759 INFO L78 Accepts]: Start accepts. Automaton has 32704 states and 56500 transitions. Word has length 199 [2019-10-07 14:22:08,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:08,759 INFO L462 AbstractCegarLoop]: Abstraction has 32704 states and 56500 transitions. [2019-10-07 14:22:08,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:22:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 32704 states and 56500 transitions. [2019-10-07 14:22:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-07 14:22:08,769 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:08,770 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:22:08,978 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:08,987 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:08,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:08,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1035266910, now seen corresponding path program 1 times [2019-10-07 14:22:08,987 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:08,988 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:08,988 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:08,988 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:22:09,153 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:09,153 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:22:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:22:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:09,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 3449 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:22:09,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 14:22:09,976 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:22:10,376 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:22:10,376 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-07 14:22:10,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:22:10,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:22:10,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:22:10,377 INFO L87 Difference]: Start difference. First operand 32704 states and 56500 transitions. Second operand 4 states. [2019-10-07 14:22:11,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:11,101 INFO L93 Difference]: Finished difference Result 67861 states and 120490 transitions. [2019-10-07 14:22:11,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:22:11,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 202 [2019-10-07 14:22:11,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:11,197 INFO L225 Difference]: With dead ends: 67861 [2019-10-07 14:22:11,197 INFO L226 Difference]: Without dead ends: 35200 [2019-10-07 14:22:11,250 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 401 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-07 14:22:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35200 states. [2019-10-07 14:22:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35200 to 35200. [2019-10-07 14:22:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35200 states. [2019-10-07 14:22:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35200 states to 35200 states and 61172 transitions. [2019-10-07 14:22:13,730 INFO L78 Accepts]: Start accepts. Automaton has 35200 states and 61172 transitions. Word has length 202 [2019-10-07 14:22:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:13,730 INFO L462 AbstractCegarLoop]: Abstraction has 35200 states and 61172 transitions. [2019-10-07 14:22:13,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:22:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 35200 states and 61172 transitions. [2019-10-07 14:22:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-07 14:22:13,737 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:13,738 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:22:13,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:13,946 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:13,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1605029394, now seen corresponding path program 1 times [2019-10-07 14:22:13,947 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:13,947 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:13,948 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:13,948 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:22:14,124 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:14,125 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:22:14,125 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 14:22:14,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 14:22:14,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 14:22:14,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 14:22:14,127 INFO L87 Difference]: Start difference. First operand 35200 states and 61172 transitions. Second operand 4 states. [2019-10-07 14:22:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:14,838 INFO L93 Difference]: Finished difference Result 73045 states and 129712 transitions. [2019-10-07 14:22:14,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 14:22:14,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204 [2019-10-07 14:22:14,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:14,943 INFO L225 Difference]: With dead ends: 73045 [2019-10-07 14:22:14,943 INFO L226 Difference]: Without dead ends: 37376 [2019-10-07 14:22:14,998 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 14:22:15,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37376 states. [2019-10-07 14:22:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37376 to 37376. [2019-10-07 14:22:16,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37376 states. [2019-10-07 14:22:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37376 states to 37376 states and 62324 transitions. [2019-10-07 14:22:16,173 INFO L78 Accepts]: Start accepts. Automaton has 37376 states and 62324 transitions. Word has length 204 [2019-10-07 14:22:16,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:16,174 INFO L462 AbstractCegarLoop]: Abstraction has 37376 states and 62324 transitions. [2019-10-07 14:22:16,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 14:22:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 37376 states and 62324 transitions. [2019-10-07 14:22:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-07 14:22:16,183 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:16,183 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:22:16,184 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:16,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:16,184 INFO L82 PathProgramCache]: Analyzing trace with hash -875365601, now seen corresponding path program 1 times [2019-10-07 14:22:16,184 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:16,185 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:16,185 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:16,185 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-07 14:22:16,410 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:16,411 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:22:16,411 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 14:22:16,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:22:16,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:22:16,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-07 14:22:16,412 INFO L87 Difference]: Start difference. First operand 37376 states and 62324 transitions. Second operand 9 states. [2019-10-07 14:22:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:22,964 INFO L93 Difference]: Finished difference Result 85621 states and 147499 transitions. [2019-10-07 14:22:22,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-07 14:22:22,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 204 [2019-10-07 14:22:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:23,095 INFO L225 Difference]: With dead ends: 85621 [2019-10-07 14:22:23,095 INFO L226 Difference]: Without dead ends: 41083 [2019-10-07 14:22:23,165 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2019-10-07 14:22:23,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41083 states. [2019-10-07 14:22:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41083 to 40096. [2019-10-07 14:22:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40096 states. [2019-10-07 14:22:26,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40096 states to 40096 states and 64104 transitions. [2019-10-07 14:22:26,600 INFO L78 Accepts]: Start accepts. Automaton has 40096 states and 64104 transitions. Word has length 204 [2019-10-07 14:22:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:26,600 INFO L462 AbstractCegarLoop]: Abstraction has 40096 states and 64104 transitions. [2019-10-07 14:22:26,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:22:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 40096 states and 64104 transitions. [2019-10-07 14:22:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-07 14:22:26,605 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:26,606 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:22:26,606 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:26,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:26,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1738254893, now seen corresponding path program 1 times [2019-10-07 14:22:26,606 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:26,607 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:26,607 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:26,607 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-07 14:22:27,109 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:27,109 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:22:27,109 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 14:22:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:27,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 3452 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 14:22:27,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:22:27,978 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:22:28,651 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:22:28,651 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [21] total 28 [2019-10-07 14:22:28,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:22:28,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:22:28,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2019-10-07 14:22:28,654 INFO L87 Difference]: Start difference. First operand 40096 states and 64104 transitions. Second operand 9 states. [2019-10-07 14:22:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:30,956 INFO L93 Difference]: Finished difference Result 41502 states and 71127 transitions. [2019-10-07 14:22:30,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 14:22:30,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 205 [2019-10-07 14:22:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:31,435 INFO L225 Difference]: With dead ends: 41502 [2019-10-07 14:22:31,436 INFO L226 Difference]: Without dead ends: 41283 [2019-10-07 14:22:31,450 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 412 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2019-10-07 14:22:31,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41283 states. [2019-10-07 14:22:32,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41283 to 40579. [2019-10-07 14:22:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40579 states. [2019-10-07 14:22:32,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40579 states to 40579 states and 66422 transitions. [2019-10-07 14:22:32,642 INFO L78 Accepts]: Start accepts. Automaton has 40579 states and 66422 transitions. Word has length 205 [2019-10-07 14:22:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:32,643 INFO L462 AbstractCegarLoop]: Abstraction has 40579 states and 66422 transitions. [2019-10-07 14:22:32,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:22:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 40579 states and 66422 transitions. [2019-10-07 14:22:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-07 14:22:32,648 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:32,649 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:22:32,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:32,850 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:32,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:32,850 INFO L82 PathProgramCache]: Analyzing trace with hash 504841556, now seen corresponding path program 1 times [2019-10-07 14:22:32,851 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:32,851 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:32,852 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:32,852 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:32,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-07 14:22:33,253 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:33,253 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:22:33,253 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 14:22:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:34,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 3467 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 14:22:34,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:22:34,101 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2019-10-07 14:22:34,560 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:22:34,560 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [21] total 24 [2019-10-07 14:22:34,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 14:22:34,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 14:22:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:22:34,562 INFO L87 Difference]: Start difference. First operand 40579 states and 66422 transitions. Second operand 5 states. [2019-10-07 14:22:35,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:35,587 INFO L93 Difference]: Finished difference Result 40798 states and 66666 transitions. [2019-10-07 14:22:35,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:22:35,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2019-10-07 14:22:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:35,721 INFO L225 Difference]: With dead ends: 40798 [2019-10-07 14:22:35,722 INFO L226 Difference]: Without dead ends: 40579 [2019-10-07 14:22:35,741 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 426 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2019-10-07 14:22:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40579 states. [2019-10-07 14:22:36,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40579 to 40579. [2019-10-07 14:22:36,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40579 states. [2019-10-07 14:22:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40579 states to 40579 states and 66329 transitions. [2019-10-07 14:22:36,975 INFO L78 Accepts]: Start accepts. Automaton has 40579 states and 66329 transitions. Word has length 210 [2019-10-07 14:22:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:36,976 INFO L462 AbstractCegarLoop]: Abstraction has 40579 states and 66329 transitions. [2019-10-07 14:22:36,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 14:22:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 40579 states and 66329 transitions. [2019-10-07 14:22:36,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-10-07 14:22:36,984 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:36,984 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:22:37,192 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:37,193 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:37,194 INFO L82 PathProgramCache]: Analyzing trace with hash 423710910, now seen corresponding path program 1 times [2019-10-07 14:22:37,194 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:37,195 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:37,195 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:37,195 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-07 14:22:37,666 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:37,666 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:22:37,666 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 14:22:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:40,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 3510 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-07 14:22:40,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-10-07 14:22:40,515 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-10-07 14:22:41,342 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:22:41,342 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 33 [2019-10-07 14:22:41,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:22:41,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:22:41,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2019-10-07 14:22:41,344 INFO L87 Difference]: Start difference. First operand 40579 states and 66329 transitions. Second operand 14 states. [2019-10-07 14:22:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:48,807 INFO L93 Difference]: Finished difference Result 90416 states and 152279 transitions. [2019-10-07 14:22:48,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:22:48,808 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 225 [2019-10-07 14:22:48,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:49,020 INFO L225 Difference]: With dead ends: 90416 [2019-10-07 14:22:49,020 INFO L226 Difference]: Without dead ends: 49879 [2019-10-07 14:22:49,143 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=1780, Unknown=0, NotChecked=0, Total=1980 [2019-10-07 14:22:49,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49879 states. [2019-10-07 14:22:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49879 to 48225. [2019-10-07 14:22:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48225 states. [2019-10-07 14:22:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48225 states to 48225 states and 74414 transitions. [2019-10-07 14:22:50,750 INFO L78 Accepts]: Start accepts. Automaton has 48225 states and 74414 transitions. Word has length 225 [2019-10-07 14:22:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:50,751 INFO L462 AbstractCegarLoop]: Abstraction has 48225 states and 74414 transitions. [2019-10-07 14:22:50,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:22:50,751 INFO L276 IsEmpty]: Start isEmpty. Operand 48225 states and 74414 transitions. [2019-10-07 14:22:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-07 14:22:50,758 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:50,758 INFO L385 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:22:50,966 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:50,967 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:50,968 INFO L82 PathProgramCache]: Analyzing trace with hash -547789673, now seen corresponding path program 1 times [2019-10-07 14:22:50,968 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:50,968 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:50,969 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:50,969 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-07 14:22:51,462 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:51,462 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:22:51,463 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 14:22:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:52,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-07 14:22:52,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:52,447 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:22:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-07 14:22:52,549 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:52,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:22:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-07 14:22:53,188 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:22:53,189 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 26 [2019-10-07 14:22:53,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:22:53,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:22:53,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2019-10-07 14:22:53,192 INFO L87 Difference]: Start difference. First operand 48225 states and 74414 transitions. Second operand 7 states. [2019-10-07 14:22:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:22:54,365 INFO L93 Difference]: Finished difference Result 48916 states and 75200 transitions. [2019-10-07 14:22:54,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 14:22:54,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2019-10-07 14:22:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:22:54,511 INFO L225 Difference]: With dead ends: 48916 [2019-10-07 14:22:54,511 INFO L226 Difference]: Without dead ends: 48697 [2019-10-07 14:22:54,534 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 459 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2019-10-07 14:22:54,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48697 states. [2019-10-07 14:22:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48697 to 48613. [2019-10-07 14:22:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48613 states. [2019-10-07 14:22:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48613 states to 48613 states and 74804 transitions. [2019-10-07 14:22:55,812 INFO L78 Accepts]: Start accepts. Automaton has 48613 states and 74804 transitions. Word has length 227 [2019-10-07 14:22:55,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:22:55,812 INFO L462 AbstractCegarLoop]: Abstraction has 48613 states and 74804 transitions. [2019-10-07 14:22:55,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:22:55,812 INFO L276 IsEmpty]: Start isEmpty. Operand 48613 states and 74804 transitions. [2019-10-07 14:22:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2019-10-07 14:22:55,818 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:22:55,819 INFO L385 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 8, 8, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 14:22:56,027 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:22:56,027 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:22:56,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:22:56,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1108122709, now seen corresponding path program 1 times [2019-10-07 14:22:56,028 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:22:56,029 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:56,029 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:56,029 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:22:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:22:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 7 proven. 50 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2019-10-07 14:22:56,944 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:22:56,944 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:22:56,945 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 14:22:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:22:57,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 4457 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-07 14:22:57,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:22:58,145 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 112 proven. 240 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2019-10-07 14:22:58,146 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:22:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 38 proven. 49 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2019-10-07 14:22:59,434 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:22:59,492 INFO L162 IcfgInterpreter]: Started Sifa with 204 locations of interest [2019-10-07 14:22:59,492 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:22:59,502 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:22:59,511 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:22:59,511 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:23:43,647 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 764 [2019-10-07 14:23:48,471 WARN L191 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 405 DAG size of output: 327 [2019-10-07 14:23:48,903 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 850 [2019-10-07 14:23:49,884 WARN L191 SmtUtils]: Spent 975.00 ms on a formula simplification that was a NOOP. DAG size: 850 [2019-10-07 14:23:50,125 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 850 [2019-10-07 14:23:50,677 WARN L191 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 1040 [2019-10-07 14:23:51,326 WARN L191 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 1040 [2019-10-07 14:23:51,802 WARN L191 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 1040 [2019-10-07 14:23:52,341 WARN L191 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 1040 [2019-10-07 14:23:53,339 WARN L191 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 1042 DAG size of output: 1040 [2019-10-07 14:23:53,820 WARN L191 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 1040 [2019-10-07 14:23:54,354 WARN L191 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 1040 [2019-10-07 14:23:54,835 WARN L191 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 1040 [2019-10-07 14:23:55,310 WARN L191 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 1040 [2019-10-07 14:23:55,881 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 1040 [2019-10-07 14:23:55,895 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 391 for LOIs [2019-10-07 14:23:56,079 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-10-07 14:23:56,295 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 733 [2019-10-07 14:23:56,507 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 733 [2019-10-07 14:23:56,929 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 923 [2019-10-07 14:23:56,930 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1088 for LOIs [2019-10-07 14:23:57,384 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:23:57,838 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:23:57,967 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:23:58,747 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:23:59,365 WARN L191 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:23:59,823 WARN L191 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:23:59,958 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:00,732 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:01,243 WARN L191 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:01,694 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:01,827 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:02,749 WARN L191 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:03,562 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 1262 DAG size of output: 1088 [2019-10-07 14:24:04,012 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:04,292 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:05,278 WARN L191 SmtUtils]: Spent 984.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:05,871 WARN L191 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:06,328 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:06,450 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:07,219 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:07,666 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:08,118 WARN L191 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:08,242 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:09,131 WARN L191 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:09,581 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:10,026 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:10,149 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:10,911 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:11,361 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:11,944 WARN L191 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:12,066 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:12,829 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:13,270 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:13,711 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:13,836 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:14,592 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:15,159 WARN L191 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:15,600 WARN L191 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:15,722 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:16,501 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:16,951 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:17,404 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:17,528 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:18,437 WARN L191 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:18,888 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:19,340 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:19,465 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:20,246 WARN L191 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:20,697 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:21,278 WARN L191 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 1088 [2019-10-07 14:24:21,403 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:22,193 WARN L191 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:23,002 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:23,781 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:23,915 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:24,818 WARN L191 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:26,220 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:24:27,014 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:27,284 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:28,044 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:28,810 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:29,573 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:29,696 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:30,593 WARN L191 SmtUtils]: Spent 895.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:31,407 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:24:32,180 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:24:32,314 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:24:33,087 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:24:35,583 WARN L191 SmtUtils]: Spent 2.48 s on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:24:36,345 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:24:36,475 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:24:37,247 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:24:38,553 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1266 DAG size of output: 1262 [2019-10-07 14:24:39,318 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:24:39,442 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:24:40,202 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:24:40,994 WARN L191 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:24:41,774 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:24:41,923 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:24:42,719 WARN L191 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:24:43,513 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:44,314 WARN L191 SmtUtils]: Spent 794.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:44,447 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:24:45,241 WARN L191 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:46,085 WARN L191 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:46,867 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:47,002 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:24:47,772 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:48,553 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:49,321 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:49,595 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:24:50,444 WARN L191 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:51,221 WARN L191 SmtUtils]: Spent 773.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:52,001 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:52,126 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:24:52,917 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:24:54,340 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:24:55,105 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:55,326 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:24:56,154 WARN L191 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:58,462 WARN L191 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:24:59,221 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:24:59,349 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:00,127 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:00,898 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:01,676 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:01,798 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:02,565 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:04,974 WARN L191 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 1266 DAG size of output: 1264 [2019-10-07 14:25:05,748 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:05,884 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:06,663 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:07,458 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:08,242 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:08,373 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:09,157 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:09,926 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:10,692 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:10,816 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:11,593 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:12,387 WARN L191 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:25:13,176 WARN L191 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:25:13,307 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:14,099 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:25:14,886 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:25:15,665 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:25:15,796 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:16,589 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:25:18,009 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:25:18,773 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:18,907 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:19,693 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:21,068 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:25:21,847 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:21,979 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:22,748 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:23,516 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:24,285 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:24,409 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:25,195 WARN L191 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:26,625 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:25:27,415 WARN L191 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:27,546 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:28,323 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:29,744 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:25:30,518 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:30,650 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:31,435 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:32,214 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:33,000 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:33,123 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:33,896 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:35,255 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1266 DAG size of output: 1262 [2019-10-07 14:25:36,028 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:25:36,158 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:36,931 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:37,740 WARN L191 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:38,533 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:38,669 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:39,447 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:40,888 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:25:41,659 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:41,794 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:42,592 WARN L191 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:44,017 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:25:44,810 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:44,939 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:45,706 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:46,490 WARN L191 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:47,270 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:47,393 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:25:48,172 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:25:49,626 WARN L191 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 1266 DAG size of output: 1264 [2019-10-07 14:25:50,419 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:50,568 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:51,346 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:52,146 WARN L191 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:52,938 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:53,069 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:53,853 WARN L191 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:54,645 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:55,433 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:55,557 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:56,339 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:25:57,773 WARN L191 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 1271 DAG size of output: 1269 [2019-10-07 14:25:58,559 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:25:58,710 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:25:59,524 WARN L191 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:26:00,960 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:26:01,754 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:01,886 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:02,665 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:04,052 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:26:04,813 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:04,940 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:05,701 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:06,469 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:07,226 WARN L191 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:07,350 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:08,111 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:09,545 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1266 DAG size of output: 1264 [2019-10-07 14:26:10,318 WARN L191 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:10,447 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:11,221 WARN L191 SmtUtils]: Spent 772.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:12,628 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1266 DAG size of output: 1264 [2019-10-07 14:26:13,398 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:13,527 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:14,305 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:15,072 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:15,839 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:15,963 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:16,742 WARN L191 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:17,514 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:26:18,284 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:26:18,423 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:19,198 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1269 [2019-10-07 14:26:19,993 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:26:20,777 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:26:20,909 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:21,708 WARN L191 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:26:22,521 WARN L191 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:26:23,325 WARN L191 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:26:23,457 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:24,262 WARN L191 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:26:25,057 WARN L191 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:26:25,836 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:26:25,964 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:26,728 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1271 [2019-10-07 14:26:28,103 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:26:28,858 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:28,988 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:29,751 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:31,109 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:26:31,863 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:31,990 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:32,742 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:34,120 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:26:34,888 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:35,015 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:35,776 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:37,157 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1260 [2019-10-07 14:26:37,928 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:38,061 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:38,822 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:39,591 WARN L191 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:40,370 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:40,493 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:41,271 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:42,689 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1266 DAG size of output: 1264 [2019-10-07 14:26:43,473 WARN L191 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:43,620 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:44,389 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:45,160 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:45,934 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:46,062 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:46,840 WARN L191 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:48,222 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1266 DAG size of output: 1264 [2019-10-07 14:26:48,986 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:49,109 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:49,876 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:51,202 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1271 DAG size of output: 1262 [2019-10-07 14:26:51,974 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:26:52,112 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:52,885 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:54,196 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1273 DAG size of output: 1264 [2019-10-07 14:26:54,962 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1264 [2019-10-07 14:26:55,105 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 459 [2019-10-07 14:26:55,885 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1266 [2019-10-07 14:26:55,891 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1114 for LOIs [2019-10-07 14:26:56,381 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 1114 [2019-10-07 14:26:56,871 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 1114 [2019-10-07 14:26:56,995 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:57,767 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:26:58,303 WARN L191 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:26:58,809 WARN L191 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:26:58,931 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:26:59,695 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:00,591 WARN L191 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 1262 DAG size of output: 1124 [2019-10-07 14:27:01,126 WARN L191 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:27:01,252 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:27:02,014 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:02,528 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:27:03,026 WARN L191 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:27:03,148 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:27:03,913 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:04,424 WARN L191 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:27:04,925 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:27:05,046 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:27:05,807 WARN L191 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:06,313 WARN L191 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:27:06,812 WARN L191 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 1124 [2019-10-07 14:27:06,933 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 456 [2019-10-07 14:27:07,691 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:27:07,958 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:27:07,960 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: CallReturnSummary for callee initPersonOnFloor 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: CallReturnSummary for callee initPersonOnFloor 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.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 14:27:07,967 INFO L168 Benchmark]: Toolchain (without parser) took 348923.24 ms. Allocated memory was 146.8 MB in the beginning and 3.4 GB in the end (delta: 3.3 GB). Free memory was 100.4 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 635.2 MB. Max. memory is 7.1 GB. [2019-10-07 14:27:07,967 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 14:27:07,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1047.59 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 100.2 MB in the beginning and 143.7 MB in the end (delta: -43.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2019-10-07 14:27:07,968 INFO L168 Benchmark]: Boogie Preprocessor took 194.84 ms. Allocated memory is still 205.5 MB. Free memory was 143.7 MB in the beginning and 134.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:27:07,968 INFO L168 Benchmark]: RCFGBuilder took 4856.92 ms. Allocated memory was 205.5 MB in the beginning and 289.9 MB in the end (delta: 84.4 MB). Free memory was 134.2 MB in the beginning and 154.6 MB in the end (delta: -20.4 MB). Peak memory consumption was 138.7 MB. Max. memory is 7.1 GB. [2019-10-07 14:27:07,969 INFO L168 Benchmark]: TraceAbstraction took 342819.08 ms. Allocated memory was 289.9 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 151.6 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 543.3 MB. Max. memory is 7.1 GB. [2019-10-07 14:27:07,971 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1047.59 ms. Allocated memory was 146.8 MB in the beginning and 205.5 MB in the end (delta: 58.7 MB). Free memory was 100.2 MB in the beginning and 143.7 MB in the end (delta: -43.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.84 ms. Allocated memory is still 205.5 MB. Free memory was 143.7 MB in the beginning and 134.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4856.92 ms. Allocated memory was 205.5 MB in the beginning and 289.9 MB in the end (delta: 84.4 MB). Free memory was 134.2 MB in the beginning and 154.6 MB in the end (delta: -20.4 MB). Peak memory consumption was 138.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 342819.08 ms. Allocated memory was 289.9 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 151.6 MB in the beginning and 2.7 GB in the end (delta: -2.6 GB). Peak memory consumption was 543.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: CallReturnSummary for callee initPersonOnFloor: 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...