/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:12:27,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:12:27,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:12:27,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:12:27,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:12:27,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:12:27,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:12:27,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:12:27,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:12:27,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:12:27,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:12:27,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:12:27,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:12:27,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:12:27,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:12:27,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:12:27,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:12:27,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:12:27,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:12:27,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:12:27,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:12:27,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:12:27,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:12:27,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:12:27,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:12:27,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:12:27,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:12:27,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:12:27,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:12:27,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:12:27,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:12:27,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:12:27,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:12:27,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:12:27,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:12:27,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:12:27,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:12:27,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:12:27,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:12:27,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:12:27,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:12:27,109 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 04:12:27,136 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:12:27,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:12:27,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:12:27,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:12:27,139 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:12:27,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:12:27,139 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:12:27,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:12:27,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:12:27,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:12:27,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:12:27,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:12:27,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:12:27,142 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:12:27,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:12:27,142 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:12:27,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:12:27,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:12:27,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:12:27,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:12:27,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:12:27,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:12:27,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:12:27,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:12:27,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:12:27,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:12:27,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:12:27,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:12:27,145 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 04:12:27,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:12:27,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:12:27,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:12:27,439 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:12:27,440 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:12:27,441 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-11-07 04:12:27,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adf44bb17/b7b6cab313fe453496b37d2e896a34a1/FLAG373f78651 [2019-11-07 04:12:28,156 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:12:28,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-11-07 04:12:28,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adf44bb17/b7b6cab313fe453496b37d2e896a34a1/FLAG373f78651 [2019-11-07 04:12:28,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adf44bb17/b7b6cab313fe453496b37d2e896a34a1 [2019-11-07 04:12:28,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:12:28,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:12:28,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:12:28,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:12:28,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:12:28,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:12:28" (1/1) ... [2019-11-07 04:12:28,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408fb42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:28, skipping insertion in model container [2019-11-07 04:12:28,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:12:28" (1/1) ... [2019-11-07 04:12:28,373 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:12:28,458 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:12:29,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:12:29,195 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:12:29,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:12:29,392 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:12:29,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29 WrapperNode [2019-11-07 04:12:29,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:12:29,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:12:29,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:12:29,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:12:29,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29" (1/1) ... [2019-11-07 04:12:29,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29" (1/1) ... [2019-11-07 04:12:29,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29" (1/1) ... [2019-11-07 04:12:29,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29" (1/1) ... [2019-11-07 04:12:29,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29" (1/1) ... [2019-11-07 04:12:29,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29" (1/1) ... [2019-11-07 04:12:29,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29" (1/1) ... [2019-11-07 04:12:29,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:12:29,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:12:29,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:12:29,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:12:29,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29" (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 04:12:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:12:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:12:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:12:29,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:12:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:12:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:12:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:12:29,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:12:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 04:12:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:12:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:12:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-11-07 04:12:29,654 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:12:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:12:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:12:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:12:29,655 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:12:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:12:29,656 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:12:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:12:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:12:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:12:29,657 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:12:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:12:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:12:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:12:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:12:29,658 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:12:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:12:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:12:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-11-07 04:12:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:12:29,659 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-11-07 04:12:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:12:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:12:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:12:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:12:29,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:12:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:12:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:12:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:12:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:12:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:12:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:12:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:12:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:12:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:12:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:12:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:12:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:12:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:12:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:12:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:12:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:12:29,663 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:12:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:12:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:12:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:12:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:12:29,664 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:12:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:12:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:12:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:12:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:12:29,665 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:12:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:12:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:12:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:12:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:12:29,666 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:12:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:12:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:12:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:12:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:12:29,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:12:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:12:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:12:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:12:29,668 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:12:29,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:12:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:12:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:12:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:12:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:12:29,669 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:12:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 04:12:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 04:12:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:12:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:12:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:12:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:12:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:12:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:12:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:12:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:12:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:12:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:12:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:12:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:12:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:12:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:12:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:12:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:12:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:12:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:12:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:12:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:12:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:12:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 04:12:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:12:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-11-07 04:12:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:12:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:12:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:12:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:12:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:12:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:12:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:12:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:12:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:12:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:12:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:12:29,676 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-11-07 04:12:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-11-07 04:12:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:12:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:12:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:12:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:12:29,677 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:12:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:12:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:12:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:12:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:12:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:12:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:12:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:12:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:12:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:12:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:12:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:12:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:12:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:12:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:12:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:12:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:12:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:12:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:12:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:12:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:12:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:12:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:12:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:12:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:12:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:12:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:12:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:12:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:12:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:12:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:12:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:12:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:12:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:12:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:12:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:12:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:12:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:12:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:12:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:12:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:12:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:12:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:12:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:12:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:12:35,145 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:12:35,145 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:12:35,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:35 BoogieIcfgContainer [2019-11-07 04:12:35,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:12:35,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:12:35,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:12:35,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:12:35,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:12:28" (1/3) ... [2019-11-07 04:12:35,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a82bdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:35, skipping insertion in model container [2019-11-07 04:12:35,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:12:29" (2/3) ... [2019-11-07 04:12:35,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a82bdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:12:35, skipping insertion in model container [2019-11-07 04:12:35,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:12:35" (3/3) ... [2019-11-07 04:12:35,171 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2019-11-07 04:12:35,183 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:12:35,204 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:12:35,235 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:12:35,312 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:12:35,313 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:12:35,318 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:12:35,318 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:12:35,318 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:12:35,318 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:12:35,318 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:12:35,319 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:12:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states. [2019-11-07 04:12:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-07 04:12:35,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:35,439 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:35,444 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:35,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:35,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1324391613, now seen corresponding path program 1 times [2019-11-07 04:12:35,482 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:35,483 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854538687] [2019-11-07 04:12:35,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:12:36,347 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854538687] [2019-11-07 04:12:36,348 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569258264] [2019-11-07 04:12:36,349 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 04:12:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:37,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 2927 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:37,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:12:37,162 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:37,275 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:37,276 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 04:12:37,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884534393] [2019-11-07 04:12:37,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:37,287 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:37,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:37,305 INFO L87 Difference]: Start difference. First operand 617 states. Second operand 3 states. [2019-11-07 04:12:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:37,539 INFO L93 Difference]: Finished difference Result 1355 states and 2052 transitions. [2019-11-07 04:12:37,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:37,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-11-07 04:12:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:37,585 INFO L225 Difference]: With dead ends: 1355 [2019-11-07 04:12:37,585 INFO L226 Difference]: Without dead ends: 876 [2019-11-07 04:12:37,594 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2019-11-07 04:12:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 863. [2019-11-07 04:12:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2019-11-07 04:12:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1290 transitions. [2019-11-07 04:12:37,797 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1290 transitions. Word has length 80 [2019-11-07 04:12:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:37,798 INFO L462 AbstractCegarLoop]: Abstraction has 863 states and 1290 transitions. [2019-11-07 04:12:37,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:37,798 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1290 transitions. [2019-11-07 04:12:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-07 04:12:37,803 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:37,803 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:38,007 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:38,007 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:38,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:38,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1390861368, now seen corresponding path program 1 times [2019-11-07 04:12:38,009 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:38,013 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888122838] [2019-11-07 04:12:38,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:12:38,459 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888122838] [2019-11-07 04:12:38,460 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:38,460 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:12:38,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063368721] [2019-11-07 04:12:38,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:38,461 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:38,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:38,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:12:38,462 INFO L87 Difference]: Start difference. First operand 863 states and 1290 transitions. Second operand 3 states. [2019-11-07 04:12:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:38,758 INFO L93 Difference]: Finished difference Result 2513 states and 3820 transitions. [2019-11-07 04:12:38,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:38,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-11-07 04:12:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:38,773 INFO L225 Difference]: With dead ends: 2513 [2019-11-07 04:12:38,773 INFO L226 Difference]: Without dead ends: 1681 [2019-11-07 04:12:38,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:12:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2019-11-07 04:12:38,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1576. [2019-11-07 04:12:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2019-11-07 04:12:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2410 transitions. [2019-11-07 04:12:38,874 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2410 transitions. Word has length 81 [2019-11-07 04:12:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:38,875 INFO L462 AbstractCegarLoop]: Abstraction has 1576 states and 2410 transitions. [2019-11-07 04:12:38,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2410 transitions. [2019-11-07 04:12:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 04:12:38,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:38,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:38,897 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:38,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:38,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1384021838, now seen corresponding path program 1 times [2019-11-07 04:12:38,899 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:38,899 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587199584] [2019-11-07 04:12:38,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:39,202 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 04:12:39,203 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587199584] [2019-11-07 04:12:39,203 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:39,203 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:12:39,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004960510] [2019-11-07 04:12:39,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:12:39,204 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:39,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:12:39,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:12:39,205 INFO L87 Difference]: Start difference. First operand 1576 states and 2410 transitions. Second operand 7 states. [2019-11-07 04:12:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:42,633 INFO L93 Difference]: Finished difference Result 4706 states and 7368 transitions. [2019-11-07 04:12:42,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:12:42,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2019-11-07 04:12:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:42,664 INFO L225 Difference]: With dead ends: 4706 [2019-11-07 04:12:42,664 INFO L226 Difference]: Without dead ends: 3161 [2019-11-07 04:12:42,677 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 04:12:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2019-11-07 04:12:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3092. [2019-11-07 04:12:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3092 states. [2019-11-07 04:12:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4789 transitions. [2019-11-07 04:12:42,945 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4789 transitions. Word has length 129 [2019-11-07 04:12:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:42,946 INFO L462 AbstractCegarLoop]: Abstraction has 3092 states and 4789 transitions. [2019-11-07 04:12:42,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:12:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4789 transitions. [2019-11-07 04:12:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 04:12:42,954 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:42,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:42,955 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:42,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:42,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1685858294, now seen corresponding path program 1 times [2019-11-07 04:12:42,956 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:42,956 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080960541] [2019-11-07 04:12:42,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:43,236 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 04:12:43,236 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080960541] [2019-11-07 04:12:43,237 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57549997] [2019-11-07 04:12:43,237 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 04:12:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:43,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 3277 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 04:12:43,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:43,909 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 04:12:43,910 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:44,160 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 04:12:44,161 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:12:44,161 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 04:12:44,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365768825] [2019-11-07 04:12:44,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:12:44,163 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:44,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:12:44,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:44,164 INFO L87 Difference]: Start difference. First operand 3092 states and 4789 transitions. Second operand 3 states. [2019-11-07 04:12:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:44,394 INFO L93 Difference]: Finished difference Result 7622 states and 11992 transitions. [2019-11-07 04:12:44,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:12:44,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2019-11-07 04:12:44,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:44,437 INFO L225 Difference]: With dead ends: 7622 [2019-11-07 04:12:44,438 INFO L226 Difference]: Without dead ends: 4561 [2019-11-07 04:12:44,460 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:12:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2019-11-07 04:12:44,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 4448. [2019-11-07 04:12:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4448 states. [2019-11-07 04:12:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 6902 transitions. [2019-11-07 04:12:44,706 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 6902 transitions. Word has length 129 [2019-11-07 04:12:44,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:44,707 INFO L462 AbstractCegarLoop]: Abstraction has 4448 states and 6902 transitions. [2019-11-07 04:12:44,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:12:44,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 6902 transitions. [2019-11-07 04:12:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 04:12:44,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:44,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:44,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:44,922 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:44,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:44,922 INFO L82 PathProgramCache]: Analyzing trace with hash -74748577, now seen corresponding path program 1 times [2019-11-07 04:12:44,922 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:44,923 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111732241] [2019-11-07 04:12:44,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:45,158 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 04:12:45,159 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111732241] [2019-11-07 04:12:45,159 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667538234] [2019-11-07 04:12:45,159 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 04:12:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:45,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:12:45,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:12:46,103 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 04:12:46,103 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:12:46,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:12:46,452 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 04:12:46,453 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:12:46,454 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-11-07 04:12:46,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504446598] [2019-11-07 04:12:46,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:12:46,455 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:46,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:12:46,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 04:12:46,456 INFO L87 Difference]: Start difference. First operand 4448 states and 6902 transitions. Second operand 6 states. [2019-11-07 04:12:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:48,158 INFO L93 Difference]: Finished difference Result 11787 states and 18629 transitions. [2019-11-07 04:12:48,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:12:48,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-11-07 04:12:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:48,217 INFO L225 Difference]: With dead ends: 11787 [2019-11-07 04:12:48,217 INFO L226 Difference]: Without dead ends: 7370 [2019-11-07 04:12:48,247 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 252 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 04:12:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2019-11-07 04:12:48,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 7326. [2019-11-07 04:12:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7326 states. [2019-11-07 04:12:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 11139 transitions. [2019-11-07 04:12:48,629 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 11139 transitions. Word has length 130 [2019-11-07 04:12:48,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:48,631 INFO L462 AbstractCegarLoop]: Abstraction has 7326 states and 11139 transitions. [2019-11-07 04:12:48,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:12:48,631 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 11139 transitions. [2019-11-07 04:12:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 04:12:48,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:48,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:48,845 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:12:48,845 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:48,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:48,845 INFO L82 PathProgramCache]: Analyzing trace with hash 399590605, now seen corresponding path program 1 times [2019-11-07 04:12:48,846 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:48,846 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472226803] [2019-11-07 04:12:48,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:49,104 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 04:12:49,105 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472226803] [2019-11-07 04:12:49,105 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:49,105 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:12:49,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642409562] [2019-11-07 04:12:49,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:12:49,107 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:49,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:12:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:49,108 INFO L87 Difference]: Start difference. First operand 7326 states and 11139 transitions. Second operand 10 states. [2019-11-07 04:12:52,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:52,881 INFO L93 Difference]: Finished difference Result 23901 states and 37483 transitions. [2019-11-07 04:12:52,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 04:12:52,881 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 135 [2019-11-07 04:12:52,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:53,021 INFO L225 Difference]: With dead ends: 23901 [2019-11-07 04:12:53,021 INFO L226 Difference]: Without dead ends: 16606 [2019-11-07 04:12:53,081 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:12:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16606 states. [2019-11-07 04:12:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16606 to 16274. [2019-11-07 04:12:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16274 states. [2019-11-07 04:12:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16274 states to 16274 states and 25243 transitions. [2019-11-07 04:12:54,053 INFO L78 Accepts]: Start accepts. Automaton has 16274 states and 25243 transitions. Word has length 135 [2019-11-07 04:12:54,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:54,054 INFO L462 AbstractCegarLoop]: Abstraction has 16274 states and 25243 transitions. [2019-11-07 04:12:54,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:12:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 16274 states and 25243 transitions. [2019-11-07 04:12:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-11-07 04:12:54,059 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:54,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:54,060 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:54,060 INFO L82 PathProgramCache]: Analyzing trace with hash 198763181, now seen corresponding path program 1 times [2019-11-07 04:12:54,061 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:54,061 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880088365] [2019-11-07 04:12:54,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:12:54,302 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880088365] [2019-11-07 04:12:54,302 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:54,302 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:12:54,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868802995] [2019-11-07 04:12:54,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:12:54,304 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:54,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:12:54,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:12:54,305 INFO L87 Difference]: Start difference. First operand 16274 states and 25243 transitions. Second operand 10 states. [2019-11-07 04:12:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:12:57,351 INFO L93 Difference]: Finished difference Result 35959 states and 56161 transitions. [2019-11-07 04:12:57,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 04:12:57,352 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2019-11-07 04:12:57,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:12:57,439 INFO L225 Difference]: With dead ends: 35959 [2019-11-07 04:12:57,440 INFO L226 Difference]: Without dead ends: 19716 [2019-11-07 04:12:57,512 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-11-07 04:12:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19716 states. [2019-11-07 04:12:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19716 to 19652. [2019-11-07 04:12:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19652 states. [2019-11-07 04:12:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19652 states to 19652 states and 30347 transitions. [2019-11-07 04:12:58,354 INFO L78 Accepts]: Start accepts. Automaton has 19652 states and 30347 transitions. Word has length 140 [2019-11-07 04:12:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:12:58,357 INFO L462 AbstractCegarLoop]: Abstraction has 19652 states and 30347 transitions. [2019-11-07 04:12:58,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:12:58,357 INFO L276 IsEmpty]: Start isEmpty. Operand 19652 states and 30347 transitions. [2019-11-07 04:12:58,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-07 04:12:58,365 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:12:58,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:12:58,366 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:12:58,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:12:58,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2144386018, now seen corresponding path program 1 times [2019-11-07 04:12:58,367 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:12:58,371 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628370917] [2019-11-07 04:12:58,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:12:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:12:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 04:12:58,954 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628370917] [2019-11-07 04:12:58,954 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:12:58,954 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-11-07 04:12:58,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510735309] [2019-11-07 04:12:58,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 04:12:58,955 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:12:58,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 04:12:58,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-11-07 04:12:58,956 INFO L87 Difference]: Start difference. First operand 19652 states and 30347 transitions. Second operand 16 states.