java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:09:10,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:09:10,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:09:10,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:09:10,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:09:10,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:09:10,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:09:10,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:09:10,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:09:10,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:09:10,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:09:10,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:09:10,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:09:10,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:09:10,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:09:10,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:09:10,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:09:10,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:09:10,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:09:10,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:09:10,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:09:10,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:09:11,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:09:11,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:09:11,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:09:11,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:09:11,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:09:11,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:09:11,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:09:11,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:09:11,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:09:11,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:09:11,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:09:11,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:09:11,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:09:11,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:09:11,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:09:11,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:09:11,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:09:11,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:09:11,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:09:11,022 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 [2019-10-15 03:09:11,055 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:09:11,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:09:11,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:09:11,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:09:11,059 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:09:11,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:09:11,060 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:09:11,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:09:11,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:09:11,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:09:11,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:09:11,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:09:11,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:09:11,065 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:09:11,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:09:11,065 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:09:11,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:09:11,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:09:11,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:09:11,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:09:11,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:09:11,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:09:11,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:09:11,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:09:11,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:09:11,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:09:11,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:09:11,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:09:11,070 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 [2019-10-15 03:09:11,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:09:11,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:09:11,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:09:11,515 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:09:11,516 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:09:11,516 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-10-15 03:09:11,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2977749dd/d6597da6d5a046c19d48126f352dcd7a/FLAGf6dc5e06d [2019-10-15 03:09:12,342 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:09:12,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product21.cil.c [2019-10-15 03:09:12,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2977749dd/d6597da6d5a046c19d48126f352dcd7a/FLAGf6dc5e06d [2019-10-15 03:09:12,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2977749dd/d6597da6d5a046c19d48126f352dcd7a [2019-10-15 03:09:12,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:09:12,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:09:12,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:12,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:09:12,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:09:12,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3ebb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:12, skipping insertion in model container [2019-10-15 03:09:12,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:12" (1/1) ... [2019-10-15 03:09:12,546 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:09:12,645 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:09:13,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:13,562 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:09:13,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:09:13,777 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:09:13,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13 WrapperNode [2019-10-15 03:09:13,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:09:13,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:09:13,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:09:13,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:09:13,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (1/1) ... [2019-10-15 03:09:13,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:09:13,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:09:13,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:09:13,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:09:13,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (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 [2019-10-15 03:09:14,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:09:14,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:09:14,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:14,119 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:09:14,119 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:09:14,122 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:09:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:09:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:09:14,124 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:09:14,124 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:09:14,124 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:09:14,126 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:09:14,126 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:09:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:09:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:09:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:09:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:09:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:09:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:09:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:09:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:09:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:09:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:09:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:09:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:09:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:09:14,136 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:09:14,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:09:14,136 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:09:14,136 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:09:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:09:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:09:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:09:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:09:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:09:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:09:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:09:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:09:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:09:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:09:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:09:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:09:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:09:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:09:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:14,142 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:09:14,142 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:09:14,142 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:09:14,142 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:09:14,143 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:09:14,143 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:09:14,143 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:09:14,143 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:09:14,143 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:09:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:09:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:09:14,144 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:09:14,145 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:09:14,146 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:09:14,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:09:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:09:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:09:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:09:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:09:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:09:14,149 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:09:14,151 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:09:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:09:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:09:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:09:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:09:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:09:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:09:14,153 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:09:14,154 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:09:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:09:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:09:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:09:14,155 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:09:14,156 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:09:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:09:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:09:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:09:14,157 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:09:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:09:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:09:14,158 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:09:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:09:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:09:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:09:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:09:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:09:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:09:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:09:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:09:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:09:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:09:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:09:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:09:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:09:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:09:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:09:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:09:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:09:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:09:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:09:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:09:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:09:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:09:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:09:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:09:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:09:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:09:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:09:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:09:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:09:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:09:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:09:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:09:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:09:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:09:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:09:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:09:14,170 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:09:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:09:14,171 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:09:14,172 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:09:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:09:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:09:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:09:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-15 03:09:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-15 03:09:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:09:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:09:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:09:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:09:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:09:14,188 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:09:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:09:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:09:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:09:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:09:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:09:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:09:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:09:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:09:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:09:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:09:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:09:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:09:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:09:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:09:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:09:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:09:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:09:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:09:20,658 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:09:20,658 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:09:20,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:20 BoogieIcfgContainer [2019-10-15 03:09:20,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:09:20,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:09:20,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:09:20,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:09:20,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:12" (1/3) ... [2019-10-15 03:09:20,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1921d6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:20, skipping insertion in model container [2019-10-15 03:09:20,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13" (2/3) ... [2019-10-15 03:09:20,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1921d6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:20, skipping insertion in model container [2019-10-15 03:09:20,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:20" (3/3) ... [2019-10-15 03:09:20,670 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2019-10-15 03:09:20,682 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:09:20,692 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:09:20,703 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:09:20,758 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:09:20,758 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:09:20,758 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:09:20,758 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:09:20,758 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:09:20,758 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:09:20,759 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:09:20,759 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:09:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2019-10-15 03:09:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-15 03:09:20,824 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:20,831 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:20,837 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:20,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1849535445, now seen corresponding path program 1 times [2019-10-15 03:09:20,856 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:20,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000812173] [2019-10-15 03:09:20,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:20,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:20,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:09:21,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000812173] [2019-10-15 03:09:21,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766785156] [2019-10-15 03:09:21,906 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 [2019-10-15 03:09:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:22,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:09:22,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:09:22,772 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:23,012 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:23,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 03:09:23,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204935118] [2019-10-15 03:09:23,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:23,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:23,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:23,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:23,045 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 3 states. [2019-10-15 03:09:23,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:23,467 INFO L93 Difference]: Finished difference Result 1295 states and 1980 transitions. [2019-10-15 03:09:23,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:23,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-10-15 03:09:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:23,504 INFO L225 Difference]: With dead ends: 1295 [2019-10-15 03:09:23,505 INFO L226 Difference]: Without dead ends: 836 [2019-10-15 03:09:23,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:09:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2019-10-15 03:09:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 823. [2019-10-15 03:09:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2019-10-15 03:09:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1242 transitions. [2019-10-15 03:09:23,730 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1242 transitions. Word has length 112 [2019-10-15 03:09:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:23,731 INFO L462 AbstractCegarLoop]: Abstraction has 823 states and 1242 transitions. [2019-10-15 03:09:23,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1242 transitions. [2019-10-15 03:09:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-15 03:09:23,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:23,748 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:23,950 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:23,950 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:23,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:23,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1890203850, now seen corresponding path program 1 times [2019-10-15 03:09:23,951 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:23,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049377655] [2019-10-15 03:09:23,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:23,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:23,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:24,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049377655] [2019-10-15 03:09:24,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256845413] [2019-10-15 03:09:24,362 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 [2019-10-15 03:09:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:25,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 03:09:25,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:25,113 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:09:25,357 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:25,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [7] total 10 [2019-10-15 03:09:25,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920015028] [2019-10-15 03:09:25,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:09:25,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:25,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:09:25,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:25,360 INFO L87 Difference]: Start difference. First operand 823 states and 1242 transitions. Second operand 5 states. [2019-10-15 03:09:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:28,589 INFO L93 Difference]: Finished difference Result 3140 states and 4841 transitions. [2019-10-15 03:09:28,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:09:28,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2019-10-15 03:09:28,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:28,629 INFO L225 Difference]: With dead ends: 3140 [2019-10-15 03:09:28,629 INFO L226 Difference]: Without dead ends: 2348 [2019-10-15 03:09:28,653 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:09:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2019-10-15 03:09:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2298. [2019-10-15 03:09:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2019-10-15 03:09:28,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3441 transitions. [2019-10-15 03:09:28,818 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3441 transitions. Word has length 113 [2019-10-15 03:09:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:28,819 INFO L462 AbstractCegarLoop]: Abstraction has 2298 states and 3441 transitions. [2019-10-15 03:09:28,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:09:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3441 transitions. [2019-10-15 03:09:28,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:09:28,828 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:28,829 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:29,037 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:29,037 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:29,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:29,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1610128671, now seen corresponding path program 1 times [2019-10-15 03:09:29,039 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:29,039 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289780582] [2019-10-15 03:09:29,039 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:29,040 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:29,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:29,511 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289780582] [2019-10-15 03:09:29,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354405009] [2019-10-15 03:09:29,512 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 [2019-10-15 03:09:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:30,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 03:09:30,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:30,493 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:30,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 03:09:30,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:30,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 03:09:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:09:30,979 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:30,979 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-15 03:09:30,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163312000] [2019-10-15 03:09:30,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:09:30,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:30,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:09:30,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 03:09:30,981 INFO L87 Difference]: Start difference. First operand 2298 states and 3441 transitions. Second operand 11 states. [2019-10-15 03:09:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:32,954 INFO L93 Difference]: Finished difference Result 4335 states and 6542 transitions. [2019-10-15 03:09:32,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:09:32,955 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 117 [2019-10-15 03:09:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:32,983 INFO L225 Difference]: With dead ends: 4335 [2019-10-15 03:09:32,983 INFO L226 Difference]: Without dead ends: 2610 [2019-10-15 03:09:32,997 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 224 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:09:33,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2019-10-15 03:09:33,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2482. [2019-10-15 03:09:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2482 states. [2019-10-15 03:09:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3693 transitions. [2019-10-15 03:09:33,155 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3693 transitions. Word has length 117 [2019-10-15 03:09:33,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:33,157 INFO L462 AbstractCegarLoop]: Abstraction has 2482 states and 3693 transitions. [2019-10-15 03:09:33,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:09:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3693 transitions. [2019-10-15 03:09:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-15 03:09:33,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:33,162 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:33,370 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:33,370 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:33,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:33,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1143572123, now seen corresponding path program 1 times [2019-10-15 03:09:33,372 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:33,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342121182] [2019-10-15 03:09:33,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,373 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:33,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:33,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342121182] [2019-10-15 03:09:33,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389701280] [2019-10-15 03:09:33,675 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 [2019-10-15 03:09:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:34,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 3018 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 03:09:34,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:34,588 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:34,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:09:34,895 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:34,895 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 13 [2019-10-15 03:09:34,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696123343] [2019-10-15 03:09:34,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:09:34,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:09:34,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:09:34,900 INFO L87 Difference]: Start difference. First operand 2482 states and 3693 transitions. Second operand 8 states. [2019-10-15 03:09:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:35,361 INFO L93 Difference]: Finished difference Result 4911 states and 7403 transitions. [2019-10-15 03:09:35,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:09:35,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2019-10-15 03:09:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:35,387 INFO L225 Difference]: With dead ends: 4911 [2019-10-15 03:09:35,390 INFO L226 Difference]: Without dead ends: 2970 [2019-10-15 03:09:35,404 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 229 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:09:35,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2019-10-15 03:09:35,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2970. [2019-10-15 03:09:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2019-10-15 03:09:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4437 transitions. [2019-10-15 03:09:35,561 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4437 transitions. Word has length 118 [2019-10-15 03:09:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:35,562 INFO L462 AbstractCegarLoop]: Abstraction has 2970 states and 4437 transitions. [2019-10-15 03:09:35,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:09:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4437 transitions. [2019-10-15 03:09:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:09:35,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:35,569 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:35,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:35,779 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:35,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:35,779 INFO L82 PathProgramCache]: Analyzing trace with hash 422021190, now seen corresponding path program 1 times [2019-10-15 03:09:35,780 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:35,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617068054] [2019-10-15 03:09:35,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:35,781 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:35,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:35,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617068054] [2019-10-15 03:09:35,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105384971] [2019-10-15 03:09:35,980 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 [2019-10-15 03:09:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:36,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 34 conjunts are in the unsatisfiable core [2019-10-15 03:09:36,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:36,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:36,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:09:36,874 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:37,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:37,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:37,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:09:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:37,434 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:09:37,434 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 10] total 23 [2019-10-15 03:09:37,435 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541469607] [2019-10-15 03:09:37,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:09:37,436 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:37,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:09:37,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2019-10-15 03:09:37,437 INFO L87 Difference]: Start difference. First operand 2970 states and 4437 transitions. Second operand 10 states. [2019-10-15 03:09:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:45,010 INFO L93 Difference]: Finished difference Result 5251 states and 7920 transitions. [2019-10-15 03:09:45,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 03:09:45,011 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 121 [2019-10-15 03:09:45,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:45,048 INFO L225 Difference]: With dead ends: 5251 [2019-10-15 03:09:45,048 INFO L226 Difference]: Without dead ends: 5248 [2019-10-15 03:09:45,055 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 03:09:45,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5248 states. [2019-10-15 03:09:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5248 to 5151. [2019-10-15 03:09:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5151 states. [2019-10-15 03:09:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 7790 transitions. [2019-10-15 03:09:45,368 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 7790 transitions. Word has length 121 [2019-10-15 03:09:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:45,370 INFO L462 AbstractCegarLoop]: Abstraction has 5151 states and 7790 transitions. [2019-10-15 03:09:45,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:09:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 7790 transitions. [2019-10-15 03:09:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-15 03:09:45,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:45,377 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:09:45,587 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:45,588 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:45,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1892322802, now seen corresponding path program 1 times [2019-10-15 03:09:45,590 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:45,591 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040821588] [2019-10-15 03:09:45,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:45,592 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:45,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:45,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:09:45,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040821588] [2019-10-15 03:09:45,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746424936] [2019-10-15 03:09:45,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:46,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:09:46,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:09:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:09:46,491 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:09:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:09:46,607 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:09:46,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-10-15 03:09:46,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310098208] [2019-10-15 03:09:46,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:09:46,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:09:46,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:09:46,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:46,613 INFO L87 Difference]: Start difference. First operand 5151 states and 7790 transitions. Second operand 3 states. [2019-10-15 03:09:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:09:47,032 INFO L93 Difference]: Finished difference Result 12714 states and 19734 transitions. [2019-10-15 03:09:47,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:09:47,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-10-15 03:09:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:09:47,109 INFO L225 Difference]: With dead ends: 12714 [2019-10-15 03:09:47,110 INFO L226 Difference]: Without dead ends: 7594 [2019-10-15 03:09:47,149 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:09:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2019-10-15 03:09:47,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 7454. [2019-10-15 03:09:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7454 states. [2019-10-15 03:09:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7454 states to 7454 states and 11300 transitions. [2019-10-15 03:09:47,640 INFO L78 Accepts]: Start accepts. Automaton has 7454 states and 11300 transitions. Word has length 121 [2019-10-15 03:09:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:09:47,642 INFO L462 AbstractCegarLoop]: Abstraction has 7454 states and 11300 transitions. [2019-10-15 03:09:47,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:09:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 7454 states and 11300 transitions. [2019-10-15 03:09:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:09:47,648 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:09:47,649 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:09:47,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:09:47,859 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:09:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:09:47,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2112920687, now seen corresponding path program 1 times [2019-10-15 03:09:47,866 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:09:47,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903785413] [2019-10-15 03:09:47,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:47,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:09:47,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:09:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:09:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 03:09:48,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903785413] [2019-10-15 03:09:48,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372856888] [2019-10-15 03:09:48,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true