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_spec14_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:02:19,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:02:19,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:02:19,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:02:19,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:02:19,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:02:19,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:02:20,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:02:20,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:02:20,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:02:20,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:02:20,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:02:20,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:02:20,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:02:20,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:02:20,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:02:20,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:02:20,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:02:20,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:02:20,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:02:20,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:02:20,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:02:20,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:02:20,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:02:20,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:02:20,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:02:20,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:02:20,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:02:20,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:02:20,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:02:20,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:02:20,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:02:20,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:02:20,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:02:20,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:02:20,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:02:20,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:02:20,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:02:20,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:02:20,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:02:20,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:02:20,046 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 [2019-10-13 23:02:20,073 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:02:20,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:02:20,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:02:20,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:02:20,075 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:02:20,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:02:20,075 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:02:20,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:02:20,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:02:20,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:02:20,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:02:20,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:02:20,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:02:20,077 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:02:20,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:02:20,077 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:02:20,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:02:20,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:02:20,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:02:20,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:02:20,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:02:20,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:02:20,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:02:20,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:02:20,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:02:20,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:02:20,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:02:20,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:02:20,080 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 [2019-10-13 23:02:20,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:02:20,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:02:20,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:02:20,428 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:02:20,429 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:02:20,429 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product20.cil.c [2019-10-13 23:02:20,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b46df0d61/17b003285c2d46d19f66487950a7ebdd/FLAGb65cb0ca5 [2019-10-13 23:02:21,188 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:02:21,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product20.cil.c [2019-10-13 23:02:21,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b46df0d61/17b003285c2d46d19f66487950a7ebdd/FLAGb65cb0ca5 [2019-10-13 23:02:21,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b46df0d61/17b003285c2d46d19f66487950a7ebdd [2019-10-13 23:02:21,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:02:21,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:02:21,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:21,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:02:21,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:02:21,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:21" (1/1) ... [2019-10-13 23:02:21,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c3814f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:21, skipping insertion in model container [2019-10-13 23:02:21,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:02:21" (1/1) ... [2019-10-13 23:02:21,386 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:02:21,462 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:02:22,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:22,268 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:02:22,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:02:22,483 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:02:22,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22 WrapperNode [2019-10-13 23:02:22,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:02:22,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:02:22,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:02:22,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:02:22,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22" (1/1) ... [2019-10-13 23:02:22,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22" (1/1) ... [2019-10-13 23:02:22,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22" (1/1) ... [2019-10-13 23:02:22,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22" (1/1) ... [2019-10-13 23:02:22,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22" (1/1) ... [2019-10-13 23:02:22,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22" (1/1) ... [2019-10-13 23:02:22,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22" (1/1) ... [2019-10-13 23:02:22,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:02:22,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:02:22,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:02:22,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:02:22,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22" (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 [2019-10-13 23:02:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:02:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:02:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:22,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:02:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:02:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:02:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:02:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:02:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:02:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:02:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:02:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:02:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:02:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:02:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:02:22,766 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:02:22,767 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:02:22,768 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:02:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:02:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:02:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:02:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:02:22,769 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:02:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:02:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:02:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:02:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:02:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:02:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:02:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:02:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:02:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:02:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:02:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:02:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:02:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:02:22,772 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:02:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:02:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:02:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:02:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:02:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:02:22,773 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:02:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:02:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:02:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:02:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:02:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:02:22,774 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:02:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:02:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:02:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:02:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:02:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:02:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:02:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:02:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:02:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:02:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:02:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:02:22,777 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:02:22,778 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 23:02:22,778 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:02:22,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 23:02:22,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:02:22,778 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:02:22,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:02:22,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:02:22,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:02:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:02:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:02:22,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:02:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:02:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:02:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:02:22,781 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:02:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:02:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:02:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:02:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:02:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:02:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:02:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:02:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:02:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:02:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:02:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:02:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:02:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:02:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:02:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:02:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:02:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:02:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:02:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:02:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:02:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:02:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:02:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:02:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:02:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:02:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:02:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:02:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:02:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:02:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-13 23:02:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:02:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:02:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:02:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:02:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:02:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:02:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:02:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:02:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:02:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:02:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:02:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:02:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:02:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:02:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:02:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:02:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:02:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:02:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:02:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:02:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:02:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:02:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:02:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:02:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:02:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:02:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:02:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:02:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:02:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:02:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:02:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:02:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:02:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:02:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:02:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:02:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:02:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:02:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:02:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:02:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:02:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:02:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:02:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:02:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:02:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:02:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:02:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:02:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:02:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:02:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:02:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:02:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 23:02:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 23:02:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:02:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:02:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:02:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:02:27,424 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:02:27,424 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:02:27,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:27 BoogieIcfgContainer [2019-10-13 23:02:27,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:02:27,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:02:27,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:02:27,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:02:27,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:02:21" (1/3) ... [2019-10-13 23:02:27,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6052d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:27, skipping insertion in model container [2019-10-13 23:02:27,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:02:22" (2/3) ... [2019-10-13 23:02:27,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6052d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:02:27, skipping insertion in model container [2019-10-13 23:02:27,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:02:27" (3/3) ... [2019-10-13 23:02:27,435 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product20.cil.c [2019-10-13 23:02:27,445 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:02:27,455 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:02:27,466 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:02:27,504 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:02:27,504 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:02:27,504 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:02:27,505 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:02:27,505 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:02:27,505 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:02:27,505 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:02:27,505 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:02:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states. [2019-10-13 23:02:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-13 23:02:27,548 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:27,549 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:27,551 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:27,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1065410639, now seen corresponding path program 1 times [2019-10-13 23:02:27,564 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:27,565 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059722130] [2019-10-13 23:02:27,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:27,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:27,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:02:28,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059722130] [2019-10-13 23:02:28,224 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:28,224 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:02:28,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587465273] [2019-10-13 23:02:28,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:02:28,233 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:28,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:02:28,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:02:28,255 INFO L87 Difference]: Start difference. First operand 555 states. Second operand 3 states. [2019-10-13 23:02:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:28,639 INFO L93 Difference]: Finished difference Result 1247 states and 1886 transitions. [2019-10-13 23:02:28,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:02:28,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2019-10-13 23:02:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:28,678 INFO L225 Difference]: With dead ends: 1247 [2019-10-13 23:02:28,679 INFO L226 Difference]: Without dead ends: 820 [2019-10-13 23:02:28,689 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:02:28,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2019-10-13 23:02:28,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 777. [2019-10-13 23:02:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2019-10-13 23:02:28,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1170 transitions. [2019-10-13 23:02:28,866 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1170 transitions. Word has length 72 [2019-10-13 23:02:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:28,867 INFO L462 AbstractCegarLoop]: Abstraction has 777 states and 1170 transitions. [2019-10-13 23:02:28,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:02:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1170 transitions. [2019-10-13 23:02:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:02:28,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:28,881 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:28,882 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:28,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1023678644, now seen corresponding path program 1 times [2019-10-13 23:02:28,882 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:28,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686360244] [2019-10-13 23:02:28,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:28,883 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:28,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 23:02:29,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686360244] [2019-10-13 23:02:29,255 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:29,256 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:02:29,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751774386] [2019-10-13 23:02:29,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:02:29,273 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:29,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:02:29,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:29,274 INFO L87 Difference]: Start difference. First operand 777 states and 1170 transitions. Second operand 7 states. [2019-10-13 23:02:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:33,174 INFO L93 Difference]: Finished difference Result 2343 states and 3590 transitions. [2019-10-13 23:02:33,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:02:33,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-13 23:02:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:33,188 INFO L225 Difference]: With dead ends: 2343 [2019-10-13 23:02:33,189 INFO L226 Difference]: Without dead ends: 1597 [2019-10-13 23:02:33,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:02:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2019-10-13 23:02:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1535. [2019-10-13 23:02:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2019-10-13 23:02:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2343 transitions. [2019-10-13 23:02:33,298 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2343 transitions. Word has length 120 [2019-10-13 23:02:33,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:33,299 INFO L462 AbstractCegarLoop]: Abstraction has 1535 states and 2343 transitions. [2019-10-13 23:02:33,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:02:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2343 transitions. [2019-10-13 23:02:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-13 23:02:33,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:33,304 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:33,304 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:33,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:33,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1282395387, now seen corresponding path program 1 times [2019-10-13 23:02:33,305 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:33,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624681385] [2019-10-13 23:02:33,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:33,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:33,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 23:02:33,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624681385] [2019-10-13 23:02:33,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700188275] [2019-10-13 23:02:33,534 INFO L94 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 [2019-10-13 23:02:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:34,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 2844 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-13 23:02:34,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:02:34,299 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 23:02:34,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:34,564 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 15 [2019-10-13 23:02:34,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222492196] [2019-10-13 23:02:34,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:02:34,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:34,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:02:34,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:02:34,566 INFO L87 Difference]: Start difference. First operand 1535 states and 2343 transitions. Second operand 6 states. [2019-10-13 23:02:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:35,313 INFO L93 Difference]: Finished difference Result 3319 states and 5048 transitions. [2019-10-13 23:02:35,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:02:35,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2019-10-13 23:02:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:35,333 INFO L225 Difference]: With dead ends: 3319 [2019-10-13 23:02:35,333 INFO L226 Difference]: Without dead ends: 1814 [2019-10-13 23:02:35,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 238 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:02:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2019-10-13 23:02:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1798. [2019-10-13 23:02:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2019-10-13 23:02:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2668 transitions. [2019-10-13 23:02:35,558 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2668 transitions. Word has length 123 [2019-10-13 23:02:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:35,560 INFO L462 AbstractCegarLoop]: Abstraction has 1798 states and 2668 transitions. [2019-10-13 23:02:35,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:02:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2668 transitions. [2019-10-13 23:02:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:02:35,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:35,570 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:35,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:35,782 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:35,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:35,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1561507645, now seen corresponding path program 1 times [2019-10-13 23:02:35,783 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:35,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655509636] [2019-10-13 23:02:35,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:35,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 23:02:36,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655509636] [2019-10-13 23:02:36,068 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:36,068 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:02:36,068 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105251222] [2019-10-13 23:02:36,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:02:36,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:36,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:02:36,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:36,070 INFO L87 Difference]: Start difference. First operand 1798 states and 2668 transitions. Second operand 9 states. [2019-10-13 23:02:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:39,723 INFO L93 Difference]: Finished difference Result 1977 states and 2950 transitions. [2019-10-13 23:02:39,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 23:02:39,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2019-10-13 23:02:39,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:39,748 INFO L225 Difference]: With dead ends: 1977 [2019-10-13 23:02:39,749 INFO L226 Difference]: Without dead ends: 1974 [2019-10-13 23:02:39,752 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2019-10-13 23:02:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2019-10-13 23:02:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1894. [2019-10-13 23:02:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1894 states. [2019-10-13 23:02:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2827 transitions. [2019-10-13 23:02:39,928 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2827 transitions. Word has length 124 [2019-10-13 23:02:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:39,931 INFO L462 AbstractCegarLoop]: Abstraction has 1894 states and 2827 transitions. [2019-10-13 23:02:39,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:02:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2827 transitions. [2019-10-13 23:02:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 23:02:39,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:39,944 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:39,944 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:39,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1363237341, now seen corresponding path program 1 times [2019-10-13 23:02:39,945 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:39,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222394338] [2019-10-13 23:02:39,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:39,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:39,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-10-13 23:02:40,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222394338] [2019-10-13 23:02:40,331 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:40,331 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:02:40,331 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403181616] [2019-10-13 23:02:40,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:02:40,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:40,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:02:40,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:40,333 INFO L87 Difference]: Start difference. First operand 1894 states and 2827 transitions. Second operand 5 states. [2019-10-13 23:02:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:40,462 INFO L93 Difference]: Finished difference Result 3781 states and 5691 transitions. [2019-10-13 23:02:40,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:40,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2019-10-13 23:02:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:40,487 INFO L225 Difference]: With dead ends: 3781 [2019-10-13 23:02:40,487 INFO L226 Difference]: Without dead ends: 1918 [2019-10-13 23:02:40,502 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:02:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2019-10-13 23:02:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1918. [2019-10-13 23:02:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2019-10-13 23:02:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2851 transitions. [2019-10-13 23:02:40,649 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2851 transitions. Word has length 160 [2019-10-13 23:02:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:40,650 INFO L462 AbstractCegarLoop]: Abstraction has 1918 states and 2851 transitions. [2019-10-13 23:02:40,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:02:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2851 transitions. [2019-10-13 23:02:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 23:02:40,659 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:40,659 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:40,659 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1035764282, now seen corresponding path program 1 times [2019-10-13 23:02:40,660 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:40,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930890915] [2019-10-13 23:02:40,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:40,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:40,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 23:02:40,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930890915] [2019-10-13 23:02:40,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785709306] [2019-10-13 23:02:40,977 INFO L94 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 [2019-10-13 23:02:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:41,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 3174 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:41,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 23:02:41,660 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 23:02:41,887 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:41,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-13 23:02:41,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161465833] [2019-10-13 23:02:41,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:41,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:41,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:41,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:02:41,889 INFO L87 Difference]: Start difference. First operand 1918 states and 2851 transitions. Second operand 4 states. [2019-10-13 23:02:42,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:42,207 INFO L93 Difference]: Finished difference Result 3961 states and 6030 transitions. [2019-10-13 23:02:42,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:42,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2019-10-13 23:02:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:42,223 INFO L225 Difference]: With dead ends: 3961 [2019-10-13 23:02:42,223 INFO L226 Difference]: Without dead ends: 2074 [2019-10-13 23:02:42,233 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:02:42,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2019-10-13 23:02:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2074. [2019-10-13 23:02:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2074 states. [2019-10-13 23:02:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3143 transitions. [2019-10-13 23:02:42,345 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3143 transitions. Word has length 165 [2019-10-13 23:02:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:42,345 INFO L462 AbstractCegarLoop]: Abstraction has 2074 states and 3143 transitions. [2019-10-13 23:02:42,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3143 transitions. [2019-10-13 23:02:42,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 23:02:42,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:42,352 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:42,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:42,560 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:42,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:42,561 INFO L82 PathProgramCache]: Analyzing trace with hash 493138988, now seen corresponding path program 1 times [2019-10-13 23:02:42,562 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:42,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621817557] [2019-10-13 23:02:42,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:42,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:42,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 23:02:42,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621817557] [2019-10-13 23:02:42,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217934170] [2019-10-13 23:02:42,727 INFO L94 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 [2019-10-13 23:02:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:43,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:43,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 23:02:43,543 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 23:02:43,776 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:43,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:43,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779770745] [2019-10-13 23:02:43,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:43,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:43,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:43,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:43,780 INFO L87 Difference]: Start difference. First operand 2074 states and 3143 transitions. Second operand 4 states. [2019-10-13 23:02:44,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:44,074 INFO L93 Difference]: Finished difference Result 4273 states and 6610 transitions. [2019-10-13 23:02:44,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:44,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2019-10-13 23:02:44,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:44,090 INFO L225 Difference]: With dead ends: 4273 [2019-10-13 23:02:44,090 INFO L226 Difference]: Without dead ends: 2230 [2019-10-13 23:02:44,101 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2019-10-13 23:02:44,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2230. [2019-10-13 23:02:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2019-10-13 23:02:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3435 transitions. [2019-10-13 23:02:44,228 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3435 transitions. Word has length 170 [2019-10-13 23:02:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:44,229 INFO L462 AbstractCegarLoop]: Abstraction has 2230 states and 3435 transitions. [2019-10-13 23:02:44,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3435 transitions. [2019-10-13 23:02:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 23:02:44,237 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:44,237 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:44,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:44,448 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:44,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:44,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1603404964, now seen corresponding path program 1 times [2019-10-13 23:02:44,449 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:44,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549037030] [2019-10-13 23:02:44,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:44,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:44,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-13 23:02:44,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549037030] [2019-10-13 23:02:44,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024161782] [2019-10-13 23:02:44,678 INFO L94 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 [2019-10-13 23:02:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:45,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:45,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 23:02:45,335 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-13 23:02:45,569 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:45,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:45,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304648856] [2019-10-13 23:02:45,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:45,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:45,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:45,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:45,572 INFO L87 Difference]: Start difference. First operand 2230 states and 3435 transitions. Second operand 4 states. [2019-10-13 23:02:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:45,836 INFO L93 Difference]: Finished difference Result 4585 states and 7190 transitions. [2019-10-13 23:02:45,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:45,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2019-10-13 23:02:45,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:45,855 INFO L225 Difference]: With dead ends: 4585 [2019-10-13 23:02:45,855 INFO L226 Difference]: Without dead ends: 2386 [2019-10-13 23:02:45,867 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2019-10-13 23:02:46,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2386. [2019-10-13 23:02:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2019-10-13 23:02:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 3727 transitions. [2019-10-13 23:02:46,047 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 3727 transitions. Word has length 174 [2019-10-13 23:02:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:46,047 INFO L462 AbstractCegarLoop]: Abstraction has 2386 states and 3727 transitions. [2019-10-13 23:02:46,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 3727 transitions. [2019-10-13 23:02:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 23:02:46,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:46,055 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:46,269 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:46,270 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:46,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:46,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1177090278, now seen corresponding path program 1 times [2019-10-13 23:02:46,271 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:46,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882668377] [2019-10-13 23:02:46,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:46,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:46,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 23:02:46,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882668377] [2019-10-13 23:02:46,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520786782] [2019-10-13 23:02:46,443 INFO L94 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 [2019-10-13 23:02:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:47,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 3186 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:02:47,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:02:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 23:02:47,123 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:02:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 23:02:47,305 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:02:47,305 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-13 23:02:47,305 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042152437] [2019-10-13 23:02:47,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:47,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:47,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:02:47,307 INFO L87 Difference]: Start difference. First operand 2386 states and 3727 transitions. Second operand 4 states. [2019-10-13 23:02:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:47,536 INFO L93 Difference]: Finished difference Result 4897 states and 7770 transitions. [2019-10-13 23:02:47,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:47,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2019-10-13 23:02:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:47,554 INFO L225 Difference]: With dead ends: 4897 [2019-10-13 23:02:47,554 INFO L226 Difference]: Without dead ends: 2542 [2019-10-13 23:02:47,565 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:02:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2019-10-13 23:02:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2542. [2019-10-13 23:02:47,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2542 states. [2019-10-13 23:02:47,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4019 transitions. [2019-10-13 23:02:47,671 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4019 transitions. Word has length 177 [2019-10-13 23:02:47,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:47,672 INFO L462 AbstractCegarLoop]: Abstraction has 2542 states and 4019 transitions. [2019-10-13 23:02:47,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4019 transitions. [2019-10-13 23:02:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 23:02:47,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:47,679 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:47,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:02:47,887 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:47,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:47,888 INFO L82 PathProgramCache]: Analyzing trace with hash 131479274, now seen corresponding path program 1 times [2019-10-13 23:02:47,888 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:47,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162833121] [2019-10-13 23:02:47,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:47,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:47,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 23:02:48,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162833121] [2019-10-13 23:02:48,144 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:48,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:02:48,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392480380] [2019-10-13 23:02:48,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:02:48,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:48,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:02:48,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:02:48,147 INFO L87 Difference]: Start difference. First operand 2542 states and 4019 transitions. Second operand 4 states. [2019-10-13 23:02:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:02:48,379 INFO L93 Difference]: Finished difference Result 5221 states and 8346 transitions. [2019-10-13 23:02:48,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:02:48,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2019-10-13 23:02:48,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:02:48,398 INFO L225 Difference]: With dead ends: 5221 [2019-10-13 23:02:48,398 INFO L226 Difference]: Without dead ends: 2678 [2019-10-13 23:02:48,409 INFO L600 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 [2019-10-13 23:02:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2019-10-13 23:02:48,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2678. [2019-10-13 23:02:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2678 states. [2019-10-13 23:02:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 4091 transitions. [2019-10-13 23:02:48,514 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 4091 transitions. Word has length 179 [2019-10-13 23:02:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:02:48,515 INFO L462 AbstractCegarLoop]: Abstraction has 2678 states and 4091 transitions. [2019-10-13 23:02:48,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:02:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 4091 transitions. [2019-10-13 23:02:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 23:02:48,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:02:48,526 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:02:48,526 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:02:48,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:02:48,527 INFO L82 PathProgramCache]: Analyzing trace with hash 716051481, now seen corresponding path program 1 times [2019-10-13 23:02:48,527 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:02:48,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098995224] [2019-10-13 23:02:48,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:48,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:02:48,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:02:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:02:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 23:02:48,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098995224] [2019-10-13 23:02:48,800 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:02:48,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:02:48,801 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46256129] [2019-10-13 23:02:48,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:02:48,804 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:02:48,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:02:48,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:02:48,804 INFO L87 Difference]: Start difference. First operand 2678 states and 4091 transitions. Second operand 9 states.