/usr/bin/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_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:11:57,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:11:57,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:11:57,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:11:57,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:11:57,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:11:57,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:11:57,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:11:57,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:11:57,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:11:57,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:11:57,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:11:57,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:11:57,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:11:57,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:11:57,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:11:57,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:11:57,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:11:57,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:11:57,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:11:57,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:11:57,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:11:57,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:11:57,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:11:57,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:11:57,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:11:57,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:11:57,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:11:57,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:11:57,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:11:57,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:11:57,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:11:57,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:11:57,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:11:57,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:11:57,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:11:57,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:11:57,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:11:57,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:11:57,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:11:57,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:11:57,544 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 [2019-11-07 04:11:57,558 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:11:57,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:11:57,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:11:57,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:11:57,560 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:11:57,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:11:57,560 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:11:57,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:11:57,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:11:57,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:11:57,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:11:57,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:11:57,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:11:57,562 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:11:57,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:11:57,562 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:11:57,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:11:57,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:11:57,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:11:57,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:11:57,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:11:57,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:11:57,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:11:57,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:11:57,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:11:57,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:11:57,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:11:57,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:11:57,565 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 [2019-11-07 04:11:57,857 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:11:57,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:11:57,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:11:57,876 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:11:57,876 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:11:57,877 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-11-07 04:11:57,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359d9ec93/1de513291d9f43f2a4969277fadb9349/FLAGdcc7ef8a5 [2019-11-07 04:11:58,646 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:11:58,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product23.cil.c [2019-11-07 04:11:58,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359d9ec93/1de513291d9f43f2a4969277fadb9349/FLAGdcc7ef8a5 [2019-11-07 04:11:58,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/359d9ec93/1de513291d9f43f2a4969277fadb9349 [2019-11-07 04:11:58,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:11:58,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:11:58,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:58,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:11:58,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:11:58,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:58" (1/1) ... [2019-11-07 04:11:58,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319cd3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:58, skipping insertion in model container [2019-11-07 04:11:58,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:58" (1/1) ... [2019-11-07 04:11:58,823 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:11:58,910 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:11:59,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:59,639 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:11:59,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:11:59,865 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:11:59,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59 WrapperNode [2019-11-07 04:11:59,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:11:59,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:11:59,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:11:59,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:11:59,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59" (1/1) ... [2019-11-07 04:11:59,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59" (1/1) ... [2019-11-07 04:11:59,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59" (1/1) ... [2019-11-07 04:11:59,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59" (1/1) ... [2019-11-07 04:12:00,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59" (1/1) ... [2019-11-07 04:12:00,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59" (1/1) ... [2019-11-07 04:12:00,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59" (1/1) ... [2019-11-07 04:12:00,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:12:00,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:12:00,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:12:00,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:12:00,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59" (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 [2019-11-07 04:12:00,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:12:00,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:12:00,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:12:00,130 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:12:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:12:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:12:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:12:00,131 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:12:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:12:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:12:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:12:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:12:00,132 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:12:00,133 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:12:00,133 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:12:00,133 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:12:00,133 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:12:00,134 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:12:00,134 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:12:00,134 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:12:00,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:12:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:12:00,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:12:00,137 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:12:00,137 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:12:00,138 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:12:00,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:12:00,138 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:12:00,138 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:12:00,138 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:12:00,139 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:12:00,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:12:00,139 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:12:00,140 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:12:00,140 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:12:00,140 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:12:00,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:12:00,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:12:00,141 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:12:00,141 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:12:00,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:12:00,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:12:00,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:12:00,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:12:00,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:12:00,142 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:12:00,142 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:12:00,142 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:12:00,142 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:12:00,143 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:12:00,143 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:12:00,143 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:12:00,143 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:12:00,143 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:12:00,144 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:12:00,144 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:12:00,144 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:12:00,144 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:12:00,144 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:12:00,145 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:12:00,145 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:12:00,146 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:12:00,146 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:12:00,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:12:00,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:12:00,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:12:00,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:12:00,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:12:00,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:12:00,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:12:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:12:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:12:00,148 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:12:00,149 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:12:00,149 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:12:00,149 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:12:00,150 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:12:00,150 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:12:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:12:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:12:00,152 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:12:00,153 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:12:00,153 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:12:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:12:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:12:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:12:00,154 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:12:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:12:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:12:00,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:12:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:12:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:12:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:12:00,157 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:12:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:12:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:12:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:12:00,158 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:12:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:12:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:12:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:12:00,159 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:12:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:12:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:12:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:12:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:12:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:12:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:12:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:12:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:12:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:12:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:12:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:12:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:12:00,163 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:12:00,163 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:12:00,163 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:12:00,164 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 04:12:00,164 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-11-07 04:12:00,164 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:12:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:12:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 04:12:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-11-07 04:12:00,166 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:12:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:12:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:12:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:12:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:12:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:12:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:12:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:12:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:12:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:12:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:12:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:12:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:12:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:12:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:12:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:12:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:12:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:12:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:12:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:12:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:12:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:12:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:12:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:12:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:12:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:12:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:12:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:12:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:12:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:12:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:12:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:12:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:12:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:12:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:12:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:12:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:12:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:12:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:12:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:12:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:12:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:12:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:12:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:12:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:12:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:12:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:12:00,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:12:05,284 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:12:05,284 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:12:05,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:05 BoogieIcfgContainer [2019-11-07 04:12:05,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:12:05,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:12:05,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:12:05,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:12:05,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:11:58" (1/3) ... [2019-11-07 04:12:05,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7f5129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:05, skipping insertion in model container [2019-11-07 04:12:05,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:59" (2/3) ... [2019-11-07 04:12:05,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7f5129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:05, skipping insertion in model container [2019-11-07 04:12:05,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:05" (3/3) ... [2019-11-07 04:12:05,295 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2019-11-07 04:12:05,306 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:12:05,318 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:12:05,329 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:12:05,361 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:12:05,361 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:12:05,362 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:12:05,362 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:12:05,362 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:12:05,362 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:12:05,362 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:12:05,362 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:12:05,403 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states. [2019-11-07 04:12:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:12:05,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:05,445 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:05,447 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:05,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1194994142, now seen corresponding path program 1 times [2019-11-07 04:12:05,466 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:05,467 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087715126] [2019-11-07 04:12:05,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:06,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:12:06,275 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087715126] [2019-11-07 04:12:06,278 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079540040] [2019-11-07 04:12:06,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-11-07 04:12:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:06,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:06,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:12:07,065 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:12:07,221 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:07,221 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:12:07,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635334695] [2019-11-07 04:12:07,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:07,230 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:07,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:07,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:12:07,255 INFO L87 Difference]: Start difference. First operand 618 states. Second operand 3 states. [2019-11-07 04:12:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:07,571 INFO L93 Difference]: Finished difference Result 1376 states and 2085 transitions. [2019-11-07 04:12:07,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:07,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2019-11-07 04:12:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:07,604 INFO L225 Difference]: With dead ends: 1376 [2019-11-07 04:12:07,604 INFO L226 Difference]: Without dead ends: 890 [2019-11-07 04:12:07,614 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:12:07,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-11-07 04:12:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 877. [2019-11-07 04:12:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-11-07 04:12:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1312 transitions. [2019-11-07 04:12:07,814 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1312 transitions. Word has length 118 [2019-11-07 04:12:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:07,816 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 1312 transitions. [2019-11-07 04:12:07,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1312 transitions. [2019-11-07 04:12:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:12:07,831 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:07,832 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:08,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:08,044 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:08,044 INFO L82 PathProgramCache]: Analyzing trace with hash -710931633, now seen corresponding path program 1 times [2019-11-07 04:12:08,045 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:08,045 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731010252] [2019-11-07 04:12:08,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:12:08,435 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731010252] [2019-11-07 04:12:08,436 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:08,436 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:12:08,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300153343] [2019-11-07 04:12:08,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:12:08,438 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:08,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:12:08,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:12:08,438 INFO L87 Difference]: Start difference. First operand 877 states and 1312 transitions. Second operand 7 states. [2019-11-07 04:12:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:11,391 INFO L93 Difference]: Finished difference Result 3352 states and 5172 transitions. [2019-11-07 04:12:11,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:12:11,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2019-11-07 04:12:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:11,423 INFO L225 Difference]: With dead ends: 3352 [2019-11-07 04:12:11,423 INFO L226 Difference]: Without dead ends: 2506 [2019-11-07 04:12:11,433 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:12:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2019-11-07 04:12:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2431. [2019-11-07 04:12:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2019-11-07 04:12:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3734 transitions. [2019-11-07 04:12:11,602 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3734 transitions. Word has length 119 [2019-11-07 04:12:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:11,603 INFO L462 AbstractCegarLoop]: Abstraction has 2431 states and 3734 transitions. [2019-11-07 04:12:11,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:12:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3734 transitions. [2019-11-07 04:12:11,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:12:11,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:11,613 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:11,613 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:11,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:11,613 INFO L82 PathProgramCache]: Analyzing trace with hash -2044796583, now seen corresponding path program 1 times [2019-11-07 04:12:11,614 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:11,614 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124907840] [2019-11-07 04:12:11,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:12:11,932 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124907840] [2019-11-07 04:12:11,932 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544507460] [2019-11-07 04:12:11,932 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 [2019-11-07 04:12:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:12,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:12,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:12:12,660 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:12:12,806 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:12,806 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2019-11-07 04:12:12,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579721857] [2019-11-07 04:12:12,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:12:12,808 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:12,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:12:12,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:12,809 INFO L87 Difference]: Start difference. First operand 2431 states and 3734 transitions. Second operand 4 states. [2019-11-07 04:12:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:13,075 INFO L93 Difference]: Finished difference Result 4648 states and 7207 transitions. [2019-11-07 04:12:13,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:12:13,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-07 04:12:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:13,094 INFO L225 Difference]: With dead ends: 4648 [2019-11-07 04:12:13,094 INFO L226 Difference]: Without dead ends: 2248 [2019-11-07 04:12:13,109 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2019-11-07 04:12:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2198. [2019-11-07 04:12:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2019-11-07 04:12:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 3341 transitions. [2019-11-07 04:12:13,233 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 3341 transitions. Word has length 120 [2019-11-07 04:12:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:13,233 INFO L462 AbstractCegarLoop]: Abstraction has 2198 states and 3341 transitions. [2019-11-07 04:12:13,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:12:13,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 3341 transitions. [2019-11-07 04:12:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:12:13,237 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:13,238 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:13,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:13,445 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:13,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash 604184811, now seen corresponding path program 1 times [2019-11-07 04:12:13,446 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:13,446 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549829414] [2019-11-07 04:12:13,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:12:13,800 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549829414] [2019-11-07 04:12:13,800 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853940245] [2019-11-07 04:12:13,800 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 [2019-11-07 04:12:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:14,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:14,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:12:14,387 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:12:14,516 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:14,516 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2019-11-07 04:12:14,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677380017] [2019-11-07 04:12:14,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:14,519 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:14,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:14,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:12:14,520 INFO L87 Difference]: Start difference. First operand 2198 states and 3341 transitions. Second operand 3 states. [2019-11-07 04:12:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:14,820 INFO L93 Difference]: Finished difference Result 5514 states and 8531 transitions. [2019-11-07 04:12:14,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:14,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-11-07 04:12:14,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:14,854 INFO L225 Difference]: With dead ends: 5514 [2019-11-07 04:12:14,854 INFO L226 Difference]: Without dead ends: 3347 [2019-11-07 04:12:14,868 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:12:14,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2019-11-07 04:12:15,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3262. [2019-11-07 04:12:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3262 states. [2019-11-07 04:12:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4986 transitions. [2019-11-07 04:12:15,081 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4986 transitions. Word has length 119 [2019-11-07 04:12:15,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:15,082 INFO L462 AbstractCegarLoop]: Abstraction has 3262 states and 4986 transitions. [2019-11-07 04:12:15,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:15,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4986 transitions. [2019-11-07 04:12:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:12:15,089 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:15,089 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:15,296 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:15,297 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:15,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:15,297 INFO L82 PathProgramCache]: Analyzing trace with hash 979559282, now seen corresponding path program 1 times [2019-11-07 04:12:15,298 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:15,298 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919214538] [2019-11-07 04:12:15,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:12:15,497 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919214538] [2019-11-07 04:12:15,497 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334281993] [2019-11-07 04:12:15,497 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 [2019-11-07 04:12:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:16,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 3028 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:12:16,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:12:16,224 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:16,345 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-11-07 04:12:16,530 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:12:16,644 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:12:16,644 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-11-07 04:12:16,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792474547] [2019-11-07 04:12:16,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:12:16,645 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:16,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:12:16,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:12:16,646 INFO L87 Difference]: Start difference. First operand 3262 states and 4986 transitions. Second operand 6 states. [2019-11-07 04:12:18,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:18,288 INFO L93 Difference]: Finished difference Result 8600 states and 13448 transitions. [2019-11-07 04:12:18,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:12:18,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2019-11-07 04:12:18,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:18,334 INFO L225 Difference]: With dead ends: 8600 [2019-11-07 04:12:18,334 INFO L226 Difference]: Without dead ends: 5369 [2019-11-07 04:12:18,362 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:12:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5369 states. [2019-11-07 04:12:18,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5369 to 5333. [2019-11-07 04:12:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5333 states. [2019-11-07 04:12:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 8047 transitions. [2019-11-07 04:12:18,630 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 8047 transitions. Word has length 120 [2019-11-07 04:12:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:18,631 INFO L462 AbstractCegarLoop]: Abstraction has 5333 states and 8047 transitions. [2019-11-07 04:12:18,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:12:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 8047 transitions. [2019-11-07 04:12:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 04:12:18,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:18,635 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:18,842 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:18,842 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash 20604644, now seen corresponding path program 1 times [2019-11-07 04:12:18,844 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:18,844 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474491599] [2019-11-07 04:12:18,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:12:19,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474491599] [2019-11-07 04:12:19,195 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:19,196 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:12:19,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471700074] [2019-11-07 04:12:19,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:12:19,197 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:19,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:12:19,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:19,197 INFO L87 Difference]: Start difference. First operand 5333 states and 8047 transitions. Second operand 10 states. [2019-11-07 04:12:22,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:22,559 INFO L93 Difference]: Finished difference Result 18854 states and 29437 transitions. [2019-11-07 04:12:22,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:12:22,559 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2019-11-07 04:12:22,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:22,687 INFO L225 Difference]: With dead ends: 18854 [2019-11-07 04:12:22,688 INFO L226 Difference]: Without dead ends: 13552 [2019-11-07 04:12:22,739 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:12:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13552 states. [2019-11-07 04:12:23,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13552 to 13397. [2019-11-07 04:12:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13397 states. [2019-11-07 04:12:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 20653 transitions. [2019-11-07 04:12:23,438 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 20653 transitions. Word has length 125 [2019-11-07 04:12:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:23,439 INFO L462 AbstractCegarLoop]: Abstraction has 13397 states and 20653 transitions. [2019-11-07 04:12:23,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:12:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 20653 transitions. [2019-11-07 04:12:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:12:23,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:23,445 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:23,445 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1489652305, now seen corresponding path program 1 times [2019-11-07 04:12:23,446 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:23,446 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414679478] [2019-11-07 04:12:23,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:12:23,673 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414679478] [2019-11-07 04:12:23,675 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629945242] [2019-11-07 04:12:23,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-11-07 04:12:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:24,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-07 04:12:24,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 04:12:24,553 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:12:24,833 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:12:24,833 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2019-11-07 04:12:24,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384391546] [2019-11-07 04:12:24,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:12:24,835 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:24,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:12:24,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-11-07 04:12:24,836 INFO L87 Difference]: Start difference. First operand 13397 states and 20653 transitions. Second operand 7 states. [2019-11-07 04:12:27,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:27,379 INFO L93 Difference]: Finished difference Result 28266 states and 43618 transitions. [2019-11-07 04:12:27,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:12:27,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2019-11-07 04:12:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:27,485 INFO L225 Difference]: With dead ends: 28266 [2019-11-07 04:12:27,485 INFO L226 Difference]: Without dead ends: 14900 [2019-11-07 04:12:27,535 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 255 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-11-07 04:12:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14900 states. [2019-11-07 04:12:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14900 to 14853. [2019-11-07 04:12:28,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14853 states. [2019-11-07 04:12:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14853 states to 14853 states and 22650 transitions. [2019-11-07 04:12:28,191 INFO L78 Accepts]: Start accepts. Automaton has 14853 states and 22650 transitions. Word has length 131 [2019-11-07 04:12:28,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:28,193 INFO L462 AbstractCegarLoop]: Abstraction has 14853 states and 22650 transitions. [2019-11-07 04:12:28,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:12:28,193 INFO L276 IsEmpty]: Start isEmpty. Operand 14853 states and 22650 transitions. [2019-11-07 04:12:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 04:12:28,198 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:28,198 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:28,407 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:28,408 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:28,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:28,408 INFO L82 PathProgramCache]: Analyzing trace with hash -797822282, now seen corresponding path program 1 times [2019-11-07 04:12:28,409 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:28,409 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890324302] [2019-11-07 04:12:28,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-07 04:12:28,673 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890324302] [2019-11-07 04:12:28,674 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:28,674 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-07 04:12:28,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323158515] [2019-11-07 04:12:28,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:12:28,675 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:28,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:12:28,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-07 04:12:28,676 INFO L87 Difference]: Start difference. First operand 14853 states and 22650 transitions. Second operand 14 states.