java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec14_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:06:26,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:06:26,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:06:26,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:06:26,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:06:26,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:06:26,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:06:26,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:06:26,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:06:26,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:06:26,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:06:26,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:06:26,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:06:26,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:06:26,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:06:26,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:06:26,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:06:26,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:06:26,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:06:26,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:06:26,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:06:26,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:06:26,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:06:26,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:06:26,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:06:26,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:06:26,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:06:26,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:06:26,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:06:26,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:06:26,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:06:26,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:06:26,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:06:26,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:06:26,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:06:26,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:06:26,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:06:26,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:06:26,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:06:26,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:06:26,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:06:26,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:06:26,692 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:06:26,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:06:26,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:06:26,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:06:26,696 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:06:26,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:06:26,696 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:06:26,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:06:26,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:06:26,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:06:26,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:06:26,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:06:26,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:06:26,700 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:06:26,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:06:26,700 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:06:26,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:06:26,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:06:26,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:06:26,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:06:26,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:06:26,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:26,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:06:26,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:06:26,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:06:26,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:06:26,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:06:26,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:06:26,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:06:27,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:06:27,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:06:27,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:06:27,083 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:06:27,083 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:06:27,084 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product24.cil.c [2019-10-15 03:06:27,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae578679/926368e7bd7e4900bdd36126e141311d/FLAG7ab5103c0 [2019-10-15 03:06:27,991 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:06:27,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product24.cil.c [2019-10-15 03:06:28,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae578679/926368e7bd7e4900bdd36126e141311d/FLAG7ab5103c0 [2019-10-15 03:06:28,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae578679/926368e7bd7e4900bdd36126e141311d [2019-10-15 03:06:28,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:06:28,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:06:28,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:28,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:06:28,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:06:28,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759450e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:28, skipping insertion in model container [2019-10-15 03:06:28,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:28" (1/1) ... [2019-10-15 03:06:28,593 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:06:28,699 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:06:29,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:29,565 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:06:29,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:06:29,988 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:06:29,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29 WrapperNode [2019-10-15 03:06:29,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:06:29,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:06:29,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:06:29,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:06:30,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:30,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:30,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:30,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:30,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:30,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:30,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... [2019-10-15 03:06:30,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:06:30,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:06:30,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:06:30,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:06:30,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:06:30,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:06:30,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:06:30,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:30,454 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 03:06:30,454 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 03:06:30,455 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 03:06:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 03:06:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 03:06:30,456 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 03:06:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 03:06:30,457 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 03:06:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:06:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 03:06:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 03:06:30,458 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 03:06:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:06:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 03:06:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:06:30,460 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:06:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:06:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:06:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:30,461 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 03:06:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 03:06:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 03:06:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 03:06:30,462 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 03:06:30,464 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 03:06:30,464 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 03:06:30,465 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 03:06:30,465 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 03:06:30,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 03:06:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 03:06:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 03:06:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 03:06:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 03:06:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 03:06:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 03:06:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:06:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:06:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 03:06:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 03:06:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 03:06:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:06:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:06:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 03:06:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 03:06:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 03:06:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:06:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 03:06:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 03:06:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 03:06:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 03:06:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 03:06:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 03:06:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 03:06:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 03:06:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 03:06:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 03:06:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 03:06:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 03:06:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 03:06:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:06:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:06:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:06:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:06:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:06:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:06:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:06:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 03:06:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 03:06:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 03:06:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 03:06:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 03:06:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:06:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:06:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:06:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:06:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 03:06:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 03:06:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 03:06:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 03:06:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 03:06:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 03:06:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 03:06:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 03:06:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 03:06:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:06:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 03:06:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 03:06:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 03:06:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:06:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 03:06:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 03:06:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 03:06:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 03:06:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 03:06:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:06:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 03:06:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:06:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:06:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:06:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:06:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:06:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:06:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:06:30,491 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 03:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 03:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 03:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 03:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 03:06:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:06:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 03:06:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 03:06:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 03:06:30,498 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 03:06:30,499 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 03:06:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 03:06:30,501 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 03:06:30,502 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 03:06:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 03:06:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 03:06:30,503 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 03:06:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 03:06:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 03:06:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 03:06:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 03:06:30,507 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 03:06:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 03:06:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 03:06:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 03:06:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 03:06:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 03:06:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 03:06:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 03:06:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 03:06:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 03:06:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 03:06:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 03:06:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 03:06:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 03:06:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 03:06:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 03:06:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:06:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 03:06:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 03:06:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:06:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:06:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:06:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:06:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:06:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:06:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:06:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:06:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:06:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:06:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:06:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:06:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:06:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:06:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:06:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:06:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:06:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 03:06:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 03:06:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:06:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:06:30,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:06:38,396 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:06:38,396 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 03:06:38,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:38 BoogieIcfgContainer [2019-10-15 03:06:38,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:06:38,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:06:38,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:06:38,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:06:38,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:28" (1/3) ... [2019-10-15 03:06:38,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37efe8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:38, skipping insertion in model container [2019-10-15 03:06:38,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:29" (2/3) ... [2019-10-15 03:06:38,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37efe8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:38, skipping insertion in model container [2019-10-15 03:06:38,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:38" (3/3) ... [2019-10-15 03:06:38,412 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product24.cil.c [2019-10-15 03:06:38,425 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:06:38,439 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:06:38,467 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:06:38,535 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:06:38,536 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:06:38,537 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:06:38,538 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:06:38,540 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:06:38,541 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:06:38,541 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:06:38,543 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:06:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states. [2019-10-15 03:06:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 03:06:38,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:38,603 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:38,606 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:38,612 INFO L82 PathProgramCache]: Analyzing trace with hash 226367558, now seen corresponding path program 1 times [2019-10-15 03:06:38,621 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:38,622 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343847787] [2019-10-15 03:06:38,622 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,622 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:38,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:06:39,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343847787] [2019-10-15 03:06:39,443 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:39,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:06:39,444 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53036583] [2019-10-15 03:06:39,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:06:39,450 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:39,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:06:39,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:06:39,469 INFO L87 Difference]: Start difference. First operand 580 states. Second operand 3 states. [2019-10-15 03:06:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:40,016 INFO L93 Difference]: Finished difference Result 1322 states and 1982 transitions. [2019-10-15 03:06:40,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:06:40,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2019-10-15 03:06:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:40,059 INFO L225 Difference]: With dead ends: 1322 [2019-10-15 03:06:40,059 INFO L226 Difference]: Without dead ends: 870 [2019-10-15 03:06:40,079 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:06:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-15 03:06:40,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 827. [2019-10-15 03:06:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-10-15 03:06:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1234 transitions. [2019-10-15 03:06:40,289 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1234 transitions. Word has length 72 [2019-10-15 03:06:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:40,290 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 1234 transitions. [2019-10-15 03:06:40,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:06:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1234 transitions. [2019-10-15 03:06:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-15 03:06:40,303 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:40,303 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 03:06:40,304 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:40,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1192932849, now seen corresponding path program 1 times [2019-10-15 03:06:40,304 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:40,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065348584] [2019-10-15 03:06:40,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:40,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:06:40,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065348584] [2019-10-15 03:06:40,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479442897] [2019-10-15 03:06:40,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:41,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 2827 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 03:06:41,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:41,890 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:06:41,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:06:42,412 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:42,413 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 15 [2019-10-15 03:06:42,413 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288882303] [2019-10-15 03:06:42,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:06:42,415 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:42,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:06:42,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:06:42,416 INFO L87 Difference]: Start difference. First operand 827 states and 1234 transitions. Second operand 6 states. [2019-10-15 03:06:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:43,751 INFO L93 Difference]: Finished difference Result 1906 states and 2820 transitions. [2019-10-15 03:06:43,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:06:43,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-10-15 03:06:43,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:43,764 INFO L225 Difference]: With dead ends: 1906 [2019-10-15 03:06:43,765 INFO L226 Difference]: Without dead ends: 1109 [2019-10-15 03:06:43,771 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 230 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:06:43,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2019-10-15 03:06:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1102. [2019-10-15 03:06:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2019-10-15 03:06:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1596 transitions. [2019-10-15 03:06:43,883 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1596 transitions. Word has length 119 [2019-10-15 03:06:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:43,885 INFO L462 AbstractCegarLoop]: Abstraction has 1102 states and 1596 transitions. [2019-10-15 03:06:43,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:06:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1596 transitions. [2019-10-15 03:06:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:06:43,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:43,898 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 03:06:44,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:44,109 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:44,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:44,110 INFO L82 PathProgramCache]: Analyzing trace with hash -914410689, now seen corresponding path program 1 times [2019-10-15 03:06:44,111 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:44,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664977007] [2019-10-15 03:06:44,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:44,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:06:44,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664977007] [2019-10-15 03:06:44,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:44,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:06:44,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960711129] [2019-10-15 03:06:44,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:06:44,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:44,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:06:44,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:06:44,619 INFO L87 Difference]: Start difference. First operand 1102 states and 1596 transitions. Second operand 7 states. [2019-10-15 03:06:50,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:50,568 INFO L93 Difference]: Finished difference Result 3083 states and 4543 transitions. [2019-10-15 03:06:50,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:06:50,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2019-10-15 03:06:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:50,589 INFO L225 Difference]: With dead ends: 3083 [2019-10-15 03:06:50,589 INFO L226 Difference]: Without dead ends: 2013 [2019-10-15 03:06:50,598 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:06:50,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2019-10-15 03:06:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1918. [2019-10-15 03:06:50,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2019-10-15 03:06:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2822 transitions. [2019-10-15 03:06:50,764 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2822 transitions. Word has length 120 [2019-10-15 03:06:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:50,766 INFO L462 AbstractCegarLoop]: Abstraction has 1918 states and 2822 transitions. [2019-10-15 03:06:50,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:06:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2822 transitions. [2019-10-15 03:06:50,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 03:06:50,775 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:50,776 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 03:06:50,776 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:50,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:50,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2039267797, now seen corresponding path program 1 times [2019-10-15 03:06:50,777 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:50,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125175555] [2019-10-15 03:06:50,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:50,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:50,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:06:51,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125175555] [2019-10-15 03:06:51,099 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:51,099 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:06:51,099 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798759180] [2019-10-15 03:06:51,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:06:51,100 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:51,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:06:51,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:06:51,101 INFO L87 Difference]: Start difference. First operand 1918 states and 2822 transitions. Second operand 9 states. [2019-10-15 03:06:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:56,544 INFO L93 Difference]: Finished difference Result 2097 states and 3104 transitions. [2019-10-15 03:06:56,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:06:56,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2019-10-15 03:06:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:56,571 INFO L225 Difference]: With dead ends: 2097 [2019-10-15 03:06:56,571 INFO L226 Difference]: Without dead ends: 2094 [2019-10-15 03:06:56,576 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2019-10-15 03:06:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2019-10-15 03:06:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2014. [2019-10-15 03:06:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2014 states. [2019-10-15 03:06:56,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2981 transitions. [2019-10-15 03:06:56,739 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2981 transitions. Word has length 124 [2019-10-15 03:06:56,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:56,739 INFO L462 AbstractCegarLoop]: Abstraction has 2014 states and 2981 transitions. [2019-10-15 03:06:56,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:06:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2981 transitions. [2019-10-15 03:06:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 03:06:56,748 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:56,749 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:56,749 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:56,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash -368058761, now seen corresponding path program 1 times [2019-10-15 03:06:56,750 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:56,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325652373] [2019-10-15 03:06:56,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:56,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:56,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-10-15 03:06:56,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325652373] [2019-10-15 03:06:56,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:06:56,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:06:56,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881236490] [2019-10-15 03:06:56,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:06:56,991 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:56,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:06:56,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:56,991 INFO L87 Difference]: Start difference. First operand 2014 states and 2981 transitions. Second operand 5 states. [2019-10-15 03:06:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:57,119 INFO L93 Difference]: Finished difference Result 4021 states and 5999 transitions. [2019-10-15 03:06:57,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:57,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2019-10-15 03:06:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:57,143 INFO L225 Difference]: With dead ends: 4021 [2019-10-15 03:06:57,143 INFO L226 Difference]: Without dead ends: 2038 [2019-10-15 03:06:57,157 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:06:57,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2019-10-15 03:06:57,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 2038. [2019-10-15 03:06:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2038 states. [2019-10-15 03:06:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 3005 transitions. [2019-10-15 03:06:57,298 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 3005 transitions. Word has length 160 [2019-10-15 03:06:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:57,301 INFO L462 AbstractCegarLoop]: Abstraction has 2038 states and 3005 transitions. [2019-10-15 03:06:57,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:06:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 3005 transitions. [2019-10-15 03:06:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-10-15 03:06:57,311 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:57,311 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:57,312 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1887029752, now seen corresponding path program 1 times [2019-10-15 03:06:57,312 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:57,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186839006] [2019-10-15 03:06:57,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:57,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:57,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:57,569 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:06:57,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186839006] [2019-10-15 03:06:57,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545066832] [2019-10-15 03:06:57,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:58,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:06:58,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:06:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 03:06:58,552 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:06:58,779 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-10-15 03:06:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-10-15 03:06:58,960 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:06:58,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-10-15 03:06:58,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887466731] [2019-10-15 03:06:58,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:06:58,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:06:58,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:06:58,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:06:58,963 INFO L87 Difference]: Start difference. First operand 2038 states and 3005 transitions. Second operand 4 states. [2019-10-15 03:06:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:06:59,294 INFO L93 Difference]: Finished difference Result 4201 states and 6338 transitions. [2019-10-15 03:06:59,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:06:59,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2019-10-15 03:06:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:06:59,318 INFO L225 Difference]: With dead ends: 4201 [2019-10-15 03:06:59,318 INFO L226 Difference]: Without dead ends: 2194 [2019-10-15 03:06:59,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:06:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2019-10-15 03:06:59,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2194. [2019-10-15 03:06:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2194 states. [2019-10-15 03:06:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3297 transitions. [2019-10-15 03:06:59,453 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3297 transitions. Word has length 169 [2019-10-15 03:06:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:06:59,454 INFO L462 AbstractCegarLoop]: Abstraction has 2194 states and 3297 transitions. [2019-10-15 03:06:59,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:06:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3297 transitions. [2019-10-15 03:06:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 03:06:59,463 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:06:59,463 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:06:59,671 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:06:59,672 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:06:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:06:59,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1818494410, now seen corresponding path program 1 times [2019-10-15 03:06:59,673 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:06:59,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477985937] [2019-10-15 03:06:59,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:59,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:06:59,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:06:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:06:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-15 03:06:59,875 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477985937] [2019-10-15 03:06:59,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354532045] [2019-10-15 03:06:59,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:00,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 3195 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:07:00,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:07:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:07:00,628 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:07:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-15 03:07:01,002 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:07:01,003 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:07:01,003 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576725388] [2019-10-15 03:07:01,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:07:01,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:01,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:07:01,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:01,007 INFO L87 Difference]: Start difference. First operand 2194 states and 3297 transitions. Second operand 4 states. [2019-10-15 03:07:01,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:01,304 INFO L93 Difference]: Finished difference Result 4513 states and 6918 transitions. [2019-10-15 03:07:01,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:07:01,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2019-10-15 03:07:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:01,321 INFO L225 Difference]: With dead ends: 4513 [2019-10-15 03:07:01,321 INFO L226 Difference]: Without dead ends: 2350 [2019-10-15 03:07:01,335 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:01,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2019-10-15 03:07:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2350. [2019-10-15 03:07:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2019-10-15 03:07:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3589 transitions. [2019-10-15 03:07:01,451 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3589 transitions. Word has length 174 [2019-10-15 03:07:01,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:01,454 INFO L462 AbstractCegarLoop]: Abstraction has 2350 states and 3589 transitions. [2019-10-15 03:07:01,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:07:01,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3589 transitions. [2019-10-15 03:07:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 03:07:01,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:01,462 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:01,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:01,669 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:01,670 INFO L82 PathProgramCache]: Analyzing trace with hash 582729210, now seen corresponding path program 1 times [2019-10-15 03:07:01,670 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:01,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275221948] [2019-10-15 03:07:01,671 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:01,671 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:01,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-15 03:07:01,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275221948] [2019-10-15 03:07:01,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692095775] [2019-10-15 03:07:01,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:02,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 3199 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:07:02,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:07:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:07:02,654 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:07:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-10-15 03:07:03,130 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:07:03,130 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-10-15 03:07:03,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17627633] [2019-10-15 03:07:03,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:07:03,134 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:07:03,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:07:03,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:07:03,140 INFO L87 Difference]: Start difference. First operand 2350 states and 3589 transitions. Second operand 4 states. [2019-10-15 03:07:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:07:04,021 INFO L93 Difference]: Finished difference Result 4825 states and 7498 transitions. [2019-10-15 03:07:04,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:07:04,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2019-10-15 03:07:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:07:04,038 INFO L225 Difference]: With dead ends: 4825 [2019-10-15 03:07:04,038 INFO L226 Difference]: Without dead ends: 2506 [2019-10-15 03:07:04,050 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 353 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:07:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2019-10-15 03:07:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2019-10-15 03:07:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2506 states. [2019-10-15 03:07:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3881 transitions. [2019-10-15 03:07:04,171 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3881 transitions. Word has length 178 [2019-10-15 03:07:04,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:07:04,172 INFO L462 AbstractCegarLoop]: Abstraction has 2506 states and 3881 transitions. [2019-10-15 03:07:04,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:07:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3881 transitions. [2019-10-15 03:07:04,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 03:07:04,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:07:04,181 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:07:04,401 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:07:04,401 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:07:04,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:07:04,402 INFO L82 PathProgramCache]: Analyzing trace with hash 623841128, now seen corresponding path program 1 times [2019-10-15 03:07:04,403 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:07:04,403 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403943371] [2019-10-15 03:07:04,403 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:04,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:07:04,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:07:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:07:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 03:07:04,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403943371] [2019-10-15 03:07:04,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134879369] [2019-10-15 03:07:04,586 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