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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:08:03,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:08:03,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:08:03,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:08:03,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:08:03,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:08:03,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:08:03,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:08:03,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:08:03,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:08:03,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:08:03,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:08:03,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:08:03,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:08:03,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:08:03,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:08:03,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:08:03,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:08:03,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:08:03,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:08:03,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:08:03,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:08:03,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:08:03,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:08:03,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:08:03,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:08:03,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:08:03,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:08:03,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:08:03,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:08:03,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:08:03,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:08:03,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:08:03,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:08:03,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:08:03,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:08:03,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:08:03,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:08:03,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:08:03,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:08:03,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:08:03,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:08:03,489 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:08:03,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:08:03,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:08:03,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:08:03,490 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:08:03,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:08:03,491 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:08:03,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:08:03,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:08:03,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:08:03,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:08:03,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:08:03,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:08:03,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:08:03,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:08:03,498 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:08:03,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:08:03,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:08:03,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:08:03,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:08:03,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:08:03,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:03,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:08:03,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:08:03,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:08:03,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:08:03,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:08:03,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:08:03,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:08:03,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:08:03,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:08:03,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:08:03,805 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:08:03,805 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:08:03,806 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2019-10-15 01:08:03,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980721c70/5d9fe267c8814122a42a669e9c6d7328/FLAG21f2de793 [2019-10-15 01:08:04,562 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:08:04,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_productSimulator.cil.c [2019-10-15 01:08:04,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980721c70/5d9fe267c8814122a42a669e9c6d7328/FLAG21f2de793 [2019-10-15 01:08:04,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980721c70/5d9fe267c8814122a42a669e9c6d7328 [2019-10-15 01:08:04,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:08:04,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:08:04,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:04,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:08:04,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:08:04,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:04" (1/1) ... [2019-10-15 01:08:04,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c93ec65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:04, skipping insertion in model container [2019-10-15 01:08:04,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:04" (1/1) ... [2019-10-15 01:08:04,803 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:08:04,913 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:08:05,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:05,766 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:08:05,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:06,014 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:08:06,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06 WrapperNode [2019-10-15 01:08:06,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:06,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:08:06,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:08:06,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:08:06,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06" (1/1) ... [2019-10-15 01:08:06,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06" (1/1) ... [2019-10-15 01:08:06,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06" (1/1) ... [2019-10-15 01:08:06,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06" (1/1) ... [2019-10-15 01:08:06,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06" (1/1) ... [2019-10-15 01:08:06,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06" (1/1) ... [2019-10-15 01:08:06,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06" (1/1) ... [2019-10-15 01:08:06,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:08:06,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:08:06,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:08:06,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:08:06,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:08:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:08:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:06,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:06,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:06,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:06,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:08:06,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:08:06,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:08:06,325 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:08:06,325 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:08:06,325 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:08:06,325 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:08:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:08:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:08:06,327 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:08:06,331 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:08:06,331 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:08:06,331 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:08:06,333 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:08:06,334 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:08:06,335 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:08:06,335 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:08:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:08:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:08:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:08:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2019-10-15 01:08:06,337 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2019-10-15 01:08:06,337 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:08:06,337 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:08:06,337 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:08:06,338 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:08:06,338 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:08:06,338 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:08:06,338 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:08:06,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:08:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:08:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:08:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:08:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:08:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:08:06,341 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:08:06,341 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:08:06,341 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:08:06,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:08:06,341 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:08:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:08:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2019-10-15 01:08:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2019-10-15 01:08:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:08:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2019-10-15 01:08:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2019-10-15 01:08:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:08:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2019-10-15 01:08:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2019-10-15 01:08:06,344 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2019-10-15 01:08:06,344 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2019-10-15 01:08:06,344 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:08:06,344 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:08:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:08:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:08:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:08:06,346 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:08:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:08:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:08:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:08:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:08:06,348 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 01:08:06,348 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 01:08:06,348 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 01:08:06,348 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 01:08:06,349 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:08:06,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:08:06,350 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:08:06,350 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 01:08:06,351 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 01:08:06,351 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 01:08:06,351 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 01:08:06,351 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:06,352 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:08:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:08:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2019-10-15 01:08:06,353 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2019-10-15 01:08:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:08:06,354 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2019-10-15 01:08:06,355 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2019-10-15 01:08:06,355 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:08:06,356 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:08:06,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:08:06,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:08:06,356 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:08:06,357 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:08:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:08:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:08:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:08:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:08:06,357 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:08:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:08:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:08:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:08:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:08:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:06,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:08:06,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:06,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:06,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:08:06,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:08:06,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:08:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:08:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:08:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:08:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:08:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:08:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:08:06,360 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:08:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:08:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:08:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:08:06,361 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:08:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:08:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:08:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:08:06,362 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:08:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:08:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:08:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:08:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:08:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:08:06,364 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:08:06,365 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:08:06,365 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:08:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:08:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:08:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:08:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:08:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:08:06,372 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:08:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:08:06,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:08:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:08:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:08:06,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2019-10-15 01:08:06,375 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:08:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2019-10-15 01:08:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:08:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:08:06,384 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:08:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:08:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:08:06,385 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:08:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:08:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:08:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:08:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:08:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:08:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:08:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:08:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:08:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:08:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:08:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:08:06,388 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:08:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:08:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:08:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2019-10-15 01:08:06,389 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2019-10-15 01:08:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2019-10-15 01:08:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2019-10-15 01:08:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2019-10-15 01:08:06,390 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2019-10-15 01:08:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2019-10-15 01:08:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2019-10-15 01:08:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:08:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:08:06,391 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:08:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:08:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2019-10-15 01:08:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2019-10-15 01:08:06,392 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2019-10-15 01:08:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2019-10-15 01:08:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:08:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:08:06,393 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2019-10-15 01:08:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2019-10-15 01:08:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2019-10-15 01:08:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2019-10-15 01:08:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:08:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:08:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2019-10-15 01:08:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2019-10-15 01:08:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2019-10-15 01:08:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2019-10-15 01:08:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:08:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:08:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:08:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:08:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:08:09,360 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:08:09,360 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:08:09,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:09 BoogieIcfgContainer [2019-10-15 01:08:09,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:08:09,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:08:09,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:08:09,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:08:09,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:08:04" (1/3) ... [2019-10-15 01:08:09,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ece6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:09, skipping insertion in model container [2019-10-15 01:08:09,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:06" (2/3) ... [2019-10-15 01:08:09,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ece6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:09, skipping insertion in model container [2019-10-15 01:08:09,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:09" (3/3) ... [2019-10-15 01:08:09,373 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec13_productSimulator.cil.c [2019-10-15 01:08:09,384 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:08:09,395 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:08:09,408 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:08:09,458 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:08:09,458 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:08:09,459 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:08:09,459 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:08:09,459 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:08:09,459 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:08:09,459 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:08:09,459 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:08:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states. [2019-10-15 01:08:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 01:08:09,581 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:09,583 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 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] [2019-10-15 01:08:09,586 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:09,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:09,593 INFO L82 PathProgramCache]: Analyzing trace with hash 306173938, now seen corresponding path program 1 times [2019-10-15 01:08:09,604 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:09,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662165978] [2019-10-15 01:08:09,605 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:09,605 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:09,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-15 01:08:10,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662165978] [2019-10-15 01:08:10,345 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:10,345 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:10,346 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172263398] [2019-10-15 01:08:10,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:10,352 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:10,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:10,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:10,369 INFO L87 Difference]: Start difference. First operand 943 states. Second operand 6 states. [2019-10-15 01:08:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:10,609 INFO L93 Difference]: Finished difference Result 1564 states and 2451 transitions. [2019-10-15 01:08:10,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:10,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2019-10-15 01:08:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:10,663 INFO L225 Difference]: With dead ends: 1564 [2019-10-15 01:08:10,663 INFO L226 Difference]: Without dead ends: 785 [2019-10-15 01:08:10,680 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2019-10-15 01:08:10,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2019-10-15 01:08:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2019-10-15 01:08:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1209 transitions. [2019-10-15 01:08:10,844 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1209 transitions. Word has length 146 [2019-10-15 01:08:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:10,851 INFO L462 AbstractCegarLoop]: Abstraction has 785 states and 1209 transitions. [2019-10-15 01:08:10,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1209 transitions. [2019-10-15 01:08:10,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 01:08:10,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:10,872 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 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] [2019-10-15 01:08:10,873 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:10,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:10,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1029500576, now seen corresponding path program 1 times [2019-10-15 01:08:10,874 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:10,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413827319] [2019-10-15 01:08:10,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:10,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:10,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-15 01:08:11,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413827319] [2019-10-15 01:08:11,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:11,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:11,147 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547031080] [2019-10-15 01:08:11,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:11,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:11,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:11,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:11,151 INFO L87 Difference]: Start difference. First operand 785 states and 1209 transitions. Second operand 4 states. [2019-10-15 01:08:12,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:12,059 INFO L93 Difference]: Finished difference Result 1537 states and 2396 transitions. [2019-10-15 01:08:12,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:12,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-15 01:08:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:12,069 INFO L225 Difference]: With dead ends: 1537 [2019-10-15 01:08:12,069 INFO L226 Difference]: Without dead ends: 784 [2019-10-15 01:08:12,075 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2019-10-15 01:08:12,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2019-10-15 01:08:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2019-10-15 01:08:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1202 transitions. [2019-10-15 01:08:12,123 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1202 transitions. Word has length 147 [2019-10-15 01:08:12,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:12,124 INFO L462 AbstractCegarLoop]: Abstraction has 784 states and 1202 transitions. [2019-10-15 01:08:12,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1202 transitions. [2019-10-15 01:08:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 01:08:12,128 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:12,129 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 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] [2019-10-15 01:08:12,129 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:12,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:12,130 INFO L82 PathProgramCache]: Analyzing trace with hash -624438039, now seen corresponding path program 1 times [2019-10-15 01:08:12,130 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:12,130 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172634087] [2019-10-15 01:08:12,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:12,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:12,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:08:12,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172634087] [2019-10-15 01:08:12,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525417093] [2019-10-15 01:08:12,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:13,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:13,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:08:13,409 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-15 01:08:13,601 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:13,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2019-10-15 01:08:13,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295094456] [2019-10-15 01:08:13,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:08:13,603 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:13,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:08:13,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:13,603 INFO L87 Difference]: Start difference. First operand 784 states and 1202 transitions. Second operand 3 states. [2019-10-15 01:08:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:13,716 INFO L93 Difference]: Finished difference Result 2231 states and 3479 transitions. [2019-10-15 01:08:13,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:08:13,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2019-10-15 01:08:13,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:13,732 INFO L225 Difference]: With dead ends: 2231 [2019-10-15 01:08:13,732 INFO L226 Difference]: Without dead ends: 1509 [2019-10-15 01:08:13,739 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2019-10-15 01:08:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1505. [2019-10-15 01:08:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2019-10-15 01:08:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2336 transitions. [2019-10-15 01:08:13,819 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2336 transitions. Word has length 148 [2019-10-15 01:08:13,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:13,820 INFO L462 AbstractCegarLoop]: Abstraction has 1505 states and 2336 transitions. [2019-10-15 01:08:13,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:08:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2336 transitions. [2019-10-15 01:08:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:08:13,826 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:13,826 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 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] [2019-10-15 01:08:14,036 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:14,036 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:14,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:14,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1454256765, now seen corresponding path program 1 times [2019-10-15 01:08:14,037 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:14,038 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428618949] [2019-10-15 01:08:14,038 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:14,038 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:14,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:08:14,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428618949] [2019-10-15 01:08:14,307 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531743620] [2019-10-15 01:08:14,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:14,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:14,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:15,035 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 01:08:15,036 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:08:15,309 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:15,309 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 9 [2019-10-15 01:08:15,310 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639043691] [2019-10-15 01:08:15,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:15,311 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:15,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:15,311 INFO L87 Difference]: Start difference. First operand 1505 states and 2336 transitions. Second operand 4 states. [2019-10-15 01:08:15,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:15,483 INFO L93 Difference]: Finished difference Result 2963 states and 4635 transitions. [2019-10-15 01:08:15,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:15,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-15 01:08:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:15,504 INFO L225 Difference]: With dead ends: 2963 [2019-10-15 01:08:15,504 INFO L226 Difference]: Without dead ends: 1523 [2019-10-15 01:08:15,514 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:08:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2019-10-15 01:08:15,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2019-10-15 01:08:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2019-10-15 01:08:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2364 transitions. [2019-10-15 01:08:15,602 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2364 transitions. Word has length 149 [2019-10-15 01:08:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:15,605 INFO L462 AbstractCegarLoop]: Abstraction has 1523 states and 2364 transitions. [2019-10-15 01:08:15,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2364 transitions. [2019-10-15 01:08:15,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-15 01:08:15,610 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:15,611 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 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] [2019-10-15 01:08:15,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:15,822 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:15,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:15,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1897892157, now seen corresponding path program 1 times [2019-10-15 01:08:15,823 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:15,823 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282462052] [2019-10-15 01:08:15,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-15 01:08:16,064 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282462052] [2019-10-15 01:08:16,064 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109047140] [2019-10-15 01:08:16,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:16,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:16,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:08:16,927 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-15 01:08:17,116 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:17,116 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 01:08:17,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93469717] [2019-10-15 01:08:17,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:17,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:17,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:17,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:08:17,118 INFO L87 Difference]: Start difference. First operand 1523 states and 2364 transitions. Second operand 4 states. [2019-10-15 01:08:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:17,436 INFO L93 Difference]: Finished difference Result 3055 states and 4805 transitions. [2019-10-15 01:08:17,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:17,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-15 01:08:17,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:17,451 INFO L225 Difference]: With dead ends: 3055 [2019-10-15 01:08:17,451 INFO L226 Difference]: Without dead ends: 1601 [2019-10-15 01:08:17,460 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2019-10-15 01:08:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2019-10-15 01:08:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2019-10-15 01:08:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2512 transitions. [2019-10-15 01:08:17,522 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2512 transitions. Word has length 151 [2019-10-15 01:08:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:17,523 INFO L462 AbstractCegarLoop]: Abstraction has 1601 states and 2512 transitions. [2019-10-15 01:08:17,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2512 transitions. [2019-10-15 01:08:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-15 01:08:17,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:17,527 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 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] [2019-10-15 01:08:17,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:17,744 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:17,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:17,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1083880609, now seen corresponding path program 1 times [2019-10-15 01:08:17,744 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:17,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419187569] [2019-10-15 01:08:17,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-15 01:08:17,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419187569] [2019-10-15 01:08:17,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502943812] [2019-10-15 01:08:17,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:08:18,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:08:19,001 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-15 01:08:19,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:19,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:08:19,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043228891] [2019-10-15 01:08:19,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:08:19,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:08:19,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:08:19,358 INFO L87 Difference]: Start difference. First operand 1601 states and 2512 transitions. Second operand 7 states. [2019-10-15 01:08:19,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,598 INFO L93 Difference]: Finished difference Result 3161 states and 4987 transitions. [2019-10-15 01:08:19,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:08:19,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2019-10-15 01:08:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,613 INFO L225 Difference]: With dead ends: 3161 [2019-10-15 01:08:19,613 INFO L226 Difference]: Without dead ends: 1629 [2019-10-15 01:08:19,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 296 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2019-10-15 01:08:19,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1615. [2019-10-15 01:08:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2019-10-15 01:08:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2534 transitions. [2019-10-15 01:08:19,686 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2534 transitions. Word has length 153 [2019-10-15 01:08:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,686 INFO L462 AbstractCegarLoop]: Abstraction has 1615 states and 2534 transitions. [2019-10-15 01:08:19,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:08:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2534 transitions. [2019-10-15 01:08:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-15 01:08:19,691 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,692 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 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] [2019-10-15 01:08:19,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:19,900 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,900 INFO L82 PathProgramCache]: Analyzing trace with hash -905152903, now seen corresponding path program 1 times [2019-10-15 01:08:19,901 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317714230] [2019-10-15 01:08:19,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:20,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317714230] [2019-10-15 01:08:20,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249418563] [2019-10-15 01:08:20,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:20,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:08:20,943 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:21,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:21,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 01:08:21,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783003044] [2019-10-15 01:08:21,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:21,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:21,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:21,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:21,150 INFO L87 Difference]: Start difference. First operand 1615 states and 2534 transitions. Second operand 4 states. [2019-10-15 01:08:21,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:21,312 INFO L93 Difference]: Finished difference Result 3187 states and 5027 transitions. [2019-10-15 01:08:21,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:21,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2019-10-15 01:08:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:21,330 INFO L225 Difference]: With dead ends: 3187 [2019-10-15 01:08:21,331 INFO L226 Difference]: Without dead ends: 1637 [2019-10-15 01:08:21,343 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 304 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2019-10-15 01:08:21,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1633. [2019-10-15 01:08:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2019-10-15 01:08:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2550 transitions. [2019-10-15 01:08:21,453 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2550 transitions. Word has length 154 [2019-10-15 01:08:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:21,457 INFO L462 AbstractCegarLoop]: Abstraction has 1633 states and 2550 transitions. [2019-10-15 01:08:21,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:21,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2550 transitions. [2019-10-15 01:08:21,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:08:21,464 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:21,464 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 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] [2019-10-15 01:08:21,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:21,677 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:21,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:21,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1195984086, now seen corresponding path program 1 times [2019-10-15 01:08:21,678 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:21,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538330565] [2019-10-15 01:08:21,678 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:21,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538330565] [2019-10-15 01:08:21,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497482347] [2019-10-15 01:08:21,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:22,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 3295 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:22,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 01:08:22,685 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:22,885 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:22,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-15 01:08:22,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074191328] [2019-10-15 01:08:22,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:22,887 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:22,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:22,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:22,893 INFO L87 Difference]: Start difference. First operand 1633 states and 2550 transitions. Second operand 5 states. [2019-10-15 01:08:23,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:23,001 INFO L93 Difference]: Finished difference Result 3147 states and 4949 transitions. [2019-10-15 01:08:23,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:23,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2019-10-15 01:08:23,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:23,015 INFO L225 Difference]: With dead ends: 3147 [2019-10-15 01:08:23,016 INFO L226 Difference]: Without dead ends: 1633 [2019-10-15 01:08:23,026 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2019-10-15 01:08:23,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1633. [2019-10-15 01:08:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2019-10-15 01:08:23,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2540 transitions. [2019-10-15 01:08:23,092 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2540 transitions. Word has length 157 [2019-10-15 01:08:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:23,092 INFO L462 AbstractCegarLoop]: Abstraction has 1633 states and 2540 transitions. [2019-10-15 01:08:23,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2540 transitions. [2019-10-15 01:08:23,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:08:23,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:23,097 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 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] [2019-10-15 01:08:23,300 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:23,301 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:23,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:23,301 INFO L82 PathProgramCache]: Analyzing trace with hash 75002240, now seen corresponding path program 1 times [2019-10-15 01:08:23,301 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:23,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337410812] [2019-10-15 01:08:23,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:23,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:23,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:23,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337410812] [2019-10-15 01:08:23,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417215290] [2019-10-15 01:08:23,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:24,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:24,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:08:24,373 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 01:08:24,657 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:24,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2019-10-15 01:08:24,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650198782] [2019-10-15 01:08:24,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:24,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:24,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:24,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:24,659 INFO L87 Difference]: Start difference. First operand 1633 states and 2540 transitions. Second operand 5 states. [2019-10-15 01:08:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:24,920 INFO L93 Difference]: Finished difference Result 3139 states and 4931 transitions. [2019-10-15 01:08:24,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:24,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-15 01:08:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:24,937 INFO L225 Difference]: With dead ends: 3139 [2019-10-15 01:08:24,938 INFO L226 Difference]: Without dead ends: 1717 [2019-10-15 01:08:24,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2019-10-15 01:08:25,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1711. [2019-10-15 01:08:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2019-10-15 01:08:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2686 transitions. [2019-10-15 01:08:25,012 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2686 transitions. Word has length 158 [2019-10-15 01:08:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:25,014 INFO L462 AbstractCegarLoop]: Abstraction has 1711 states and 2686 transitions. [2019-10-15 01:08:25,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2686 transitions. [2019-10-15 01:08:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:08:25,018 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:25,018 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 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] [2019-10-15 01:08:25,226 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:25,227 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:25,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1849665348, now seen corresponding path program 1 times [2019-10-15 01:08:25,228 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:25,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335317426] [2019-10-15 01:08:25,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:25,229 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:25,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:25,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335317426] [2019-10-15 01:08:25,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101401210] [2019-10-15 01:08:25,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:26,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 3297 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:08:26,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:26,305 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:26,599 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:26,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 13 [2019-10-15 01:08:26,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556025645] [2019-10-15 01:08:26,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:08:26,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:26,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:08:26,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:08:26,601 INFO L87 Difference]: Start difference. First operand 1711 states and 2686 transitions. Second operand 11 states. [2019-10-15 01:08:26,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:26,811 INFO L93 Difference]: Finished difference Result 3173 states and 4971 transitions. [2019-10-15 01:08:26,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:26,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 159 [2019-10-15 01:08:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:26,825 INFO L225 Difference]: With dead ends: 3173 [2019-10-15 01:08:26,825 INFO L226 Difference]: Without dead ends: 1751 [2019-10-15 01:08:26,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2019-10-15 01:08:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1725. [2019-10-15 01:08:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2019-10-15 01:08:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2704 transitions. [2019-10-15 01:08:26,978 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2704 transitions. Word has length 159 [2019-10-15 01:08:26,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:26,978 INFO L462 AbstractCegarLoop]: Abstraction has 1725 states and 2704 transitions. [2019-10-15 01:08:26,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:08:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2704 transitions. [2019-10-15 01:08:26,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:08:26,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:26,983 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 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] [2019-10-15 01:08:27,191 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:27,192 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:27,193 INFO L82 PathProgramCache]: Analyzing trace with hash -101195520, now seen corresponding path program 1 times [2019-10-15 01:08:27,193 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:27,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837075905] [2019-10-15 01:08:27,194 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:27,196 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:27,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:27,375 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837075905] [2019-10-15 01:08:27,375 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523067406] [2019-10-15 01:08:27,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:28,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 3299 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:28,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 01:08:28,368 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:28,530 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:28,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2019-10-15 01:08:28,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441830563] [2019-10-15 01:08:28,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:28,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:28,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:28,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:28,533 INFO L87 Difference]: Start difference. First operand 1725 states and 2704 transitions. Second operand 6 states. [2019-10-15 01:08:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:28,645 INFO L93 Difference]: Finished difference Result 3263 states and 5129 transitions. [2019-10-15 01:08:28,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:28,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2019-10-15 01:08:28,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:28,657 INFO L225 Difference]: With dead ends: 3263 [2019-10-15 01:08:28,657 INFO L226 Difference]: Without dead ends: 1725 [2019-10-15 01:08:28,663 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:08:28,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2019-10-15 01:08:28,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1725. [2019-10-15 01:08:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2019-10-15 01:08:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2698 transitions. [2019-10-15 01:08:28,725 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2698 transitions. Word has length 161 [2019-10-15 01:08:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:28,726 INFO L462 AbstractCegarLoop]: Abstraction has 1725 states and 2698 transitions. [2019-10-15 01:08:28,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:28,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2698 transitions. [2019-10-15 01:08:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:08:28,734 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:28,734 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:08:28,943 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:28,944 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:28,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:28,944 INFO L82 PathProgramCache]: Analyzing trace with hash 467627035, now seen corresponding path program 1 times [2019-10-15 01:08:28,945 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:28,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731276264] [2019-10-15 01:08:28,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:28,945 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:28,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:29,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731276264] [2019-10-15 01:08:29,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093377824] [2019-10-15 01:08:29,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:30,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 3299 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 01:08:30,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-15 01:08:30,255 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:30,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:08:30,451 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:08:30,451 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:30,451 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [4] total 11 [2019-10-15 01:08:30,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104109297] [2019-10-15 01:08:30,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:08:30,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:30,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:08:30,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:30,454 INFO L87 Difference]: Start difference. First operand 1725 states and 2698 transitions. Second operand 9 states.