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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:47,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:47,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:47,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:47,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:47,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:47,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:47,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:47,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:47,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:47,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:47,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:47,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:47,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:47,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:47,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:47,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:47,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:47,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:47,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:47,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:47,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:47,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:47,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:47,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:47,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:47,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:47,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:47,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:47,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:47,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:47,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:47,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:47,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:47,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:47,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:47,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:47,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:47,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:47,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:47,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:47,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:04:47,504 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:47,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:47,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:47,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:47,506 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:47,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:47,506 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:47,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:47,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:47,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:47,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:47,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:47,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:47,507 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:47,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:47,508 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:47,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:47,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:47,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:47,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:47,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:47,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:47,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:47,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:47,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:47,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:47,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:47,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:47,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:04:47,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:47,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:47,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:47,803 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:47,804 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:47,804 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2019-10-13 23:04:47,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d0cf6f41/2a2e9863b68b42ea806698a7ef404b01/FLAG09469f49e [2019-10-13 23:04:48,489 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:48,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2019-10-13 23:04:48,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d0cf6f41/2a2e9863b68b42ea806698a7ef404b01/FLAG09469f49e [2019-10-13 23:04:48,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d0cf6f41/2a2e9863b68b42ea806698a7ef404b01 [2019-10-13 23:04:48,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:48,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:48,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:48,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:48,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:48,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:48" (1/1) ... [2019-10-13 23:04:48,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5293757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:48, skipping insertion in model container [2019-10-13 23:04:48,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:48" (1/1) ... [2019-10-13 23:04:48,724 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:48,802 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:49,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:49,555 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:49,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:49,744 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:49,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49 WrapperNode [2019-10-13 23:04:49,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:49,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:49,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:49,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:49,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49" (1/1) ... [2019-10-13 23:04:49,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49" (1/1) ... [2019-10-13 23:04:49,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49" (1/1) ... [2019-10-13 23:04:49,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49" (1/1) ... [2019-10-13 23:04:49,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49" (1/1) ... [2019-10-13 23:04:49,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49" (1/1) ... [2019-10-13 23:04:49,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49" (1/1) ... [2019-10-13 23:04:49,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:49,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:49,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:49,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:49,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:50,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:50,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:50,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:50,054 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:50,054 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:50,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:50,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:50,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:50,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:50,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:50,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:50,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:50,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:50,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:50,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:50,058 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:50,065 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:50,068 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:50,069 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:50,069 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:50,069 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:50,069 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:50,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:50,070 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:50,070 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:50,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:50,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:50,071 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:50,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:50,071 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:50,073 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:50,073 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:50,073 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:04:50,073 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-13 23:04:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:50,077 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:50,077 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:50,077 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:50,077 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:50,077 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 23:04:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 23:04:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:50,085 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:50,086 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:50,087 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:50,088 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:04:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:04:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-13 23:04:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-13 23:04:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:54,929 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:54,929 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:54,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:54 BoogieIcfgContainer [2019-10-13 23:04:54,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:54,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:54,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:54,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:54,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:48" (1/3) ... [2019-10-13 23:04:54,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3a2529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:54, skipping insertion in model container [2019-10-13 23:04:54,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:49" (2/3) ... [2019-10-13 23:04:54,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3a2529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:54, skipping insertion in model container [2019-10-13 23:04:54,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:54" (3/3) ... [2019-10-13 23:04:54,940 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2019-10-13 23:04:54,951 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:54,961 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:54,973 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:55,006 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:55,006 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:55,007 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:55,007 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:55,007 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:55,007 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:55,007 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:55,007 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states. [2019-10-13 23:04:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:04:55,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:55,058 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:55,060 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:55,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:55,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1873355243, now seen corresponding path program 1 times [2019-10-13 23:04:55,077 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:55,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585785477] [2019-10-13 23:04:55,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:55,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:55,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:04:55,866 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585785477] [2019-10-13 23:04:55,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443914491] [2019-10-13 23:04:55,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:56,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:04:56,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:04:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:04:56,610 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:04:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:56,727 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:04:56,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2019-10-13 23:04:56,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581448069] [2019-10-13 23:04:56,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:56,734 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:56,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:56,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:04:56,752 INFO L87 Difference]: Start difference. First operand 608 states. Second operand 4 states. [2019-10-13 23:04:58,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:58,257 INFO L93 Difference]: Finished difference Result 1724 states and 2647 transitions. [2019-10-13 23:04:58,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:04:58,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2019-10-13 23:04:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:58,292 INFO L225 Difference]: With dead ends: 1724 [2019-10-13 23:04:58,292 INFO L226 Difference]: Without dead ends: 1244 [2019-10-13 23:04:58,302 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:04:58,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2019-10-13 23:04:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1203. [2019-10-13 23:04:58,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2019-10-13 23:04:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1823 transitions. [2019-10-13 23:04:58,483 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1823 transitions. Word has length 81 [2019-10-13 23:04:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:58,484 INFO L462 AbstractCegarLoop]: Abstraction has 1203 states and 1823 transitions. [2019-10-13 23:04:58,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:58,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1823 transitions. [2019-10-13 23:04:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:04:58,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:58,491 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:58,699 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:04:58,699 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:58,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:58,700 INFO L82 PathProgramCache]: Analyzing trace with hash -553101953, now seen corresponding path program 1 times [2019-10-13 23:04:58,701 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:58,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57714445] [2019-10-13 23:04:58,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:58,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:58,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:04:59,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57714445] [2019-10-13 23:04:59,037 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:59,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:04:59,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108148119] [2019-10-13 23:04:59,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:04:59,039 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:59,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:04:59,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:04:59,040 INFO L87 Difference]: Start difference. First operand 1203 states and 1823 transitions. Second operand 10 states. [2019-10-13 23:05:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:00,034 INFO L93 Difference]: Finished difference Result 2380 states and 3639 transitions. [2019-10-13 23:05:00,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 23:05:00,034 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2019-10-13 23:05:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:00,074 INFO L225 Difference]: With dead ends: 2380 [2019-10-13 23:05:00,074 INFO L226 Difference]: Without dead ends: 2377 [2019-10-13 23:05:00,078 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:05:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2019-10-13 23:05:00,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2336. [2019-10-13 23:05:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2019-10-13 23:05:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3587 transitions. [2019-10-13 23:05:00,244 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3587 transitions. Word has length 81 [2019-10-13 23:05:00,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:00,246 INFO L462 AbstractCegarLoop]: Abstraction has 2336 states and 3587 transitions. [2019-10-13 23:05:00,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:05:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3587 transitions. [2019-10-13 23:05:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 23:05:00,254 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:00,254 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:00,255 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:00,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:00,255 INFO L82 PathProgramCache]: Analyzing trace with hash -623494353, now seen corresponding path program 1 times [2019-10-13 23:05:00,255 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:00,256 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518380166] [2019-10-13 23:05:00,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:00,256 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:00,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:05:00,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518380166] [2019-10-13 23:05:00,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352103283] [2019-10-13 23:05:00,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:01,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:05:01,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:01,357 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:01,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:01,703 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:01,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-10-13 23:05:01,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036587128] [2019-10-13 23:05:01,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:05:01,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:01,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:05:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:05:01,706 INFO L87 Difference]: Start difference. First operand 2336 states and 3587 transitions. Second operand 11 states. [2019-10-13 23:05:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:06,648 INFO L93 Difference]: Finished difference Result 6534 states and 10182 transitions. [2019-10-13 23:05:06,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 23:05:06,649 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2019-10-13 23:05:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:06,681 INFO L225 Difference]: With dead ends: 6534 [2019-10-13 23:05:06,681 INFO L226 Difference]: Without dead ends: 4229 [2019-10-13 23:05:06,699 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-10-13 23:05:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2019-10-13 23:05:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 4206. [2019-10-13 23:05:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4206 states. [2019-10-13 23:05:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 6299 transitions. [2019-10-13 23:05:06,921 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 6299 transitions. Word has length 82 [2019-10-13 23:05:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:06,921 INFO L462 AbstractCegarLoop]: Abstraction has 4206 states and 6299 transitions. [2019-10-13 23:05:06,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:05:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 6299 transitions. [2019-10-13 23:05:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 23:05:06,923 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:06,923 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:07,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:07,132 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:07,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:07,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1465743899, now seen corresponding path program 1 times [2019-10-13 23:05:07,133 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:07,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500088203] [2019-10-13 23:05:07,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:07,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500088203] [2019-10-13 23:05:07,291 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:05:07,291 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:05:07,291 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260312069] [2019-10-13 23:05:07,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:07,292 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:07,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:07,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:07,293 INFO L87 Difference]: Start difference. First operand 4206 states and 6299 transitions. Second operand 3 states. [2019-10-13 23:05:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:07,602 INFO L93 Difference]: Finished difference Result 9814 states and 14925 transitions. [2019-10-13 23:05:07,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:07,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-10-13 23:05:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:07,651 INFO L225 Difference]: With dead ends: 9814 [2019-10-13 23:05:07,652 INFO L226 Difference]: Without dead ends: 5639 [2019-10-13 23:05:07,681 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:05:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2019-10-13 23:05:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5548. [2019-10-13 23:05:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5548 states. [2019-10-13 23:05:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 8327 transitions. [2019-10-13 23:05:07,982 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 8327 transitions. Word has length 82 [2019-10-13 23:05:07,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:07,984 INFO L462 AbstractCegarLoop]: Abstraction has 5548 states and 8327 transitions. [2019-10-13 23:05:07,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:07,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 8327 transitions. [2019-10-13 23:05:07,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-13 23:05:07,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:07,987 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:07,987 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:07,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:07,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1504598561, now seen corresponding path program 1 times [2019-10-13 23:05:07,988 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:07,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656914135] [2019-10-13 23:05:07,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:07,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:05:08,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656914135] [2019-10-13 23:05:08,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370838673] [2019-10-13 23:05:08,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:08,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:05:08,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:05:09,004 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:05:09,113 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:05:09,113 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 23:05:09,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301039825] [2019-10-13 23:05:09,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:05:09,114 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:09,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:05:09,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:09,115 INFO L87 Difference]: Start difference. First operand 5548 states and 8327 transitions. Second operand 3 states. [2019-10-13 23:05:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:09,370 INFO L93 Difference]: Finished difference Result 12149 states and 18381 transitions. [2019-10-13 23:05:09,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:05:09,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-13 23:05:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:09,432 INFO L225 Difference]: With dead ends: 12149 [2019-10-13 23:05:09,433 INFO L226 Difference]: Without dead ends: 6632 [2019-10-13 23:05:09,471 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:05:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6632 states. [2019-10-13 23:05:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6632 to 5502. [2019-10-13 23:05:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5502 states. [2019-10-13 23:05:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 8244 transitions. [2019-10-13 23:05:09,822 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 8244 transitions. Word has length 81 [2019-10-13 23:05:09,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:05:09,825 INFO L462 AbstractCegarLoop]: Abstraction has 5502 states and 8244 transitions. [2019-10-13 23:05:09,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:05:09,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 8244 transitions. [2019-10-13 23:05:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 23:05:09,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:05:09,840 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:05:10,050 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:10,050 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:05:10,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:05:10,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1619855230, now seen corresponding path program 1 times [2019-10-13 23:05:10,051 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:05:10,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703778658] [2019-10-13 23:05:10,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:05:10,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:05:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:10,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703778658] [2019-10-13 23:05:10,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090263109] [2019-10-13 23:05:10,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:05:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:05:11,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 3571 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 23:05:11,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:05:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:05:11,368 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:05:11,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:05:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:05:11,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:05:11,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25 [2019-10-13 23:05:11,895 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574015971] [2019-10-13 23:05:11,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:05:11,896 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:05:11,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:05:11,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2019-10-13 23:05:11,897 INFO L87 Difference]: Start difference. First operand 5502 states and 8244 transitions. Second operand 9 states. [2019-10-13 23:05:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:05:19,402 INFO L93 Difference]: Finished difference Result 13786 states and 20771 transitions. [2019-10-13 23:05:19,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:05:19,403 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 160 [2019-10-13 23:05:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:05:19,480 INFO L225 Difference]: With dead ends: 13786 [2019-10-13 23:05:19,481 INFO L226 Difference]: Without dead ends: 8315