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_spec9_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:12:40,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:12:40,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:12:40,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:12:40,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:12:40,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:12:40,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:12:40,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:12:40,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:12:40,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:12:40,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:12:40,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:12:40,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:12:40,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:12:40,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:12:40,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:12:40,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:12:40,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:12:40,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:12:40,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:12:40,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:12:40,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:12:40,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:12:40,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:12:40,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:12:40,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:12:40,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:12:40,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:12:40,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:12:40,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:12:40,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:12:40,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:12:40,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:12:40,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:12:40,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:12:40,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:12:40,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:12:40,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:12:40,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:12:40,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:12:40,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:12:40,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:12:40,690 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:12:40,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:12:40,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:12:40,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:12:40,695 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:12:40,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:12:40,696 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:12:40,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:12:40,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:12:40,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:12:40,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:12:40,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:12:40,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:12:40,697 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:12:40,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:12:40,697 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:12:40,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:12:40,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:12:40,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:12:40,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:12:40,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:12:40,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:40,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:12:40,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:12:40,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:12:40,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:12:40,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:12:40,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:12:40,700 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 [2019-10-13 21:12:40,974 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:12:40,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:12:40,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:12:40,999 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:12:40,999 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:12:41,000 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2019-10-13 21:12:41,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8048a32/efe4abce21734118aa0e39e7a9e5f0f1/FLAG5e8f95570 [2019-10-13 21:12:41,649 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:12:41,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2019-10-13 21:12:41,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8048a32/efe4abce21734118aa0e39e7a9e5f0f1/FLAG5e8f95570 [2019-10-13 21:12:41,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8048a32/efe4abce21734118aa0e39e7a9e5f0f1 [2019-10-13 21:12:41,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:12:41,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:12:41,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:41,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:12:41,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:12:41,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:41" (1/1) ... [2019-10-13 21:12:41,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74752006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:41, skipping insertion in model container [2019-10-13 21:12:41,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:41" (1/1) ... [2019-10-13 21:12:41,906 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:12:41,986 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:12:42,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:42,793 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:12:42,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:43,019 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:12:43,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43 WrapperNode [2019-10-13 21:12:43,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:43,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:12:43,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:12:43,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:12:43,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... [2019-10-13 21:12:43,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:12:43,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:12:43,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:12:43,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:12:43,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:43,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:12:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:12:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:12:43,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:12:43,348 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:12:43,348 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:12:43,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:12:43,349 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:12:43,350 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:12:43,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:12:43,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:12:43,351 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:12:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 21:12:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 21:12:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 21:12:43,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 21:12:43,355 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:12:43,355 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:12:43,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:12:43,355 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:12:43,356 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:12:43,356 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:12:43,356 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:43,357 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:12:43,357 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:12:43,358 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:12:43,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:12:43,358 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:12:43,358 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:12:43,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:12:43,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:12:43,359 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:12:43,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:12:43,359 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:43,360 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 21:12:43,360 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:12:43,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:12:43,360 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:12:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 21:12:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:12:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:12:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 21:12:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:12:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 21:12:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:12:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:12:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:12:43,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:12:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:12:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:12:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:12:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:12:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:12:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:12:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:12:43,365 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:12:43,366 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:12:43,366 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:12:43,366 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:12:43,367 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:12:43,367 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:12:43,367 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:12:43,367 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:12:43,368 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:12:43,368 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:12:43,368 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:12:43,368 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:12:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:12:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:12:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:12:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:12:43,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:12:43,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:12:43,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:12:43,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:12:43,372 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:12:43,372 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:12:43,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:12:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:12:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:12:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:12:43,374 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:12:43,374 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:12:43,375 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:12:43,375 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:12:43,375 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:12:43,375 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:12:43,375 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:12:43,375 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:12:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:12:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:12:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:12:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:12:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:12:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 21:12:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 21:12:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 21:12:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 21:12:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:12:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:12:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:12:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:12:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:12:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:12:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:12:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:12:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:12:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:12:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:12:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:12:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:12:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:12:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:12:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:12:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:12:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:12:43,382 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:12:43,384 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:12:43,384 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:12:43,384 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:43,384 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 21:12:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:12:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:12:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 21:12:43,385 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:12:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:12:43,386 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 21:12:43,387 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 21:12:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:12:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:12:43,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:12:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:12:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:12:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:12:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:12:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:12:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:12:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:43,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:12:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:12:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:12:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:12:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:12:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:12:43,401 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:12:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:12:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:12:43,402 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:12:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:12:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:12:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:12:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:12:43,403 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:12:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:12:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:12:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:12:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:12:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:12:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:12:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:12:43,404 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:12:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:12:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:12:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:12:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:12:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:12:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:12:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:12:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:12:46,248 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:12:46,249 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:12:46,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:46 BoogieIcfgContainer [2019-10-13 21:12:46,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:12:46,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:12:46,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:12:46,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:12:46,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:12:41" (1/3) ... [2019-10-13 21:12:46,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed321fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:46, skipping insertion in model container [2019-10-13 21:12:46,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:43" (2/3) ... [2019-10-13 21:12:46,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed321fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:46, skipping insertion in model container [2019-10-13 21:12:46,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:46" (3/3) ... [2019-10-13 21:12:46,260 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product32.cil.c [2019-10-13 21:12:46,270 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:12:46,281 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:12:46,294 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:12:46,335 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:12:46,335 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:12:46,335 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:12:46,336 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:12:46,336 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:12:46,336 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:12:46,336 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:12:46,336 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:12:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states. [2019-10-13 21:12:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 21:12:46,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:46,406 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:46,408 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:46,413 INFO L82 PathProgramCache]: Analyzing trace with hash 165755889, now seen corresponding path program 1 times [2019-10-13 21:12:46,423 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:46,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723620052] [2019-10-13 21:12:46,424 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:46,424 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:46,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:47,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723620052] [2019-10-13 21:12:47,049 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:47,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:47,050 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987198720] [2019-10-13 21:12:47,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:47,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:47,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:47,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:47,079 INFO L87 Difference]: Start difference. First operand 824 states. Second operand 4 states. [2019-10-13 21:12:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:47,308 INFO L93 Difference]: Finished difference Result 1297 states and 2071 transitions. [2019-10-13 21:12:47,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:47,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-10-13 21:12:47,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:47,361 INFO L225 Difference]: With dead ends: 1297 [2019-10-13 21:12:47,361 INFO L226 Difference]: Without dead ends: 657 [2019-10-13 21:12:47,375 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-13 21:12:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-13 21:12:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-13 21:12:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1037 transitions. [2019-10-13 21:12:47,505 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1037 transitions. Word has length 87 [2019-10-13 21:12:47,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:47,506 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1037 transitions. [2019-10-13 21:12:47,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1037 transitions. [2019-10-13 21:12:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 21:12:47,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:47,512 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:47,513 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:47,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:47,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1802747224, now seen corresponding path program 1 times [2019-10-13 21:12:47,514 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:47,514 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295874625] [2019-10-13 21:12:47,514 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:47,514 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:47,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:47,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295874625] [2019-10-13 21:12:47,749 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:47,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:47,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165617598] [2019-10-13 21:12:47,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:47,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:47,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:47,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:47,767 INFO L87 Difference]: Start difference. First operand 657 states and 1037 transitions. Second operand 4 states. [2019-10-13 21:12:47,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:47,882 INFO L93 Difference]: Finished difference Result 1277 states and 2032 transitions. [2019-10-13 21:12:47,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:47,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-13 21:12:47,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:47,894 INFO L225 Difference]: With dead ends: 1277 [2019-10-13 21:12:47,894 INFO L226 Difference]: Without dead ends: 657 [2019-10-13 21:12:47,901 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-13 21:12:47,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-13 21:12:47,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-13 21:12:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1036 transitions. [2019-10-13 21:12:47,950 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1036 transitions. Word has length 90 [2019-10-13 21:12:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:47,951 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1036 transitions. [2019-10-13 21:12:47,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1036 transitions. [2019-10-13 21:12:47,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-13 21:12:47,955 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:47,955 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:47,956 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:47,957 INFO L82 PathProgramCache]: Analyzing trace with hash 464088220, now seen corresponding path program 1 times [2019-10-13 21:12:47,957 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:47,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595469736] [2019-10-13 21:12:47,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:47,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:47,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:48,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595469736] [2019-10-13 21:12:48,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:48,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:48,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974524900] [2019-10-13 21:12:48,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:48,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:48,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:48,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:48,239 INFO L87 Difference]: Start difference. First operand 657 states and 1036 transitions. Second operand 4 states. [2019-10-13 21:12:48,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:48,327 INFO L93 Difference]: Finished difference Result 1277 states and 2031 transitions. [2019-10-13 21:12:48,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:48,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-13 21:12:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:48,336 INFO L225 Difference]: With dead ends: 1277 [2019-10-13 21:12:48,336 INFO L226 Difference]: Without dead ends: 657 [2019-10-13 21:12:48,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-13 21:12:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-13 21:12:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-13 21:12:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1035 transitions. [2019-10-13 21:12:48,389 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1035 transitions. Word has length 91 [2019-10-13 21:12:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:48,390 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1035 transitions. [2019-10-13 21:12:48,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1035 transitions. [2019-10-13 21:12:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 21:12:48,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:48,392 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:48,393 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:48,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:48,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1512177068, now seen corresponding path program 1 times [2019-10-13 21:12:48,393 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:48,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611006782] [2019-10-13 21:12:48,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:48,542 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611006782] [2019-10-13 21:12:48,543 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:48,543 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:48,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276223223] [2019-10-13 21:12:48,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:48,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:48,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:48,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:48,544 INFO L87 Difference]: Start difference. First operand 657 states and 1035 transitions. Second operand 4 states. [2019-10-13 21:12:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:48,611 INFO L93 Difference]: Finished difference Result 1277 states and 2030 transitions. [2019-10-13 21:12:48,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:48,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-13 21:12:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:48,617 INFO L225 Difference]: With dead ends: 1277 [2019-10-13 21:12:48,617 INFO L226 Difference]: Without dead ends: 657 [2019-10-13 21:12:48,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-13 21:12:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-13 21:12:48,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-13 21:12:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1034 transitions. [2019-10-13 21:12:48,644 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1034 transitions. Word has length 92 [2019-10-13 21:12:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:48,645 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1034 transitions. [2019-10-13 21:12:48,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1034 transitions. [2019-10-13 21:12:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 21:12:48,647 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:48,647 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:48,647 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1779400680, now seen corresponding path program 1 times [2019-10-13 21:12:48,648 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:48,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535081042] [2019-10-13 21:12:48,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,649 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:48,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535081042] [2019-10-13 21:12:48,756 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:48,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:48,757 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652952955] [2019-10-13 21:12:48,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:48,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:48,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:48,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:48,758 INFO L87 Difference]: Start difference. First operand 657 states and 1034 transitions. Second operand 4 states. [2019-10-13 21:12:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:48,824 INFO L93 Difference]: Finished difference Result 1277 states and 2029 transitions. [2019-10-13 21:12:48,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:48,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-10-13 21:12:48,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:48,830 INFO L225 Difference]: With dead ends: 1277 [2019-10-13 21:12:48,830 INFO L226 Difference]: Without dead ends: 657 [2019-10-13 21:12:48,835 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-13 21:12:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-13 21:12:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-13 21:12:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1033 transitions. [2019-10-13 21:12:48,865 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1033 transitions. Word has length 93 [2019-10-13 21:12:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:48,866 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1033 transitions. [2019-10-13 21:12:48,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1033 transitions. [2019-10-13 21:12:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:12:48,868 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:48,868 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:48,869 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:48,869 INFO L82 PathProgramCache]: Analyzing trace with hash -605939888, now seen corresponding path program 1 times [2019-10-13 21:12:48,869 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:48,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025708080] [2019-10-13 21:12:48,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:48,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:49,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025708080] [2019-10-13 21:12:49,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:49,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:12:49,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689314463] [2019-10-13 21:12:49,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:12:49,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:49,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:12:49,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:12:49,182 INFO L87 Difference]: Start difference. First operand 657 states and 1033 transitions. Second operand 10 states. [2019-10-13 21:12:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:49,380 INFO L93 Difference]: Finished difference Result 1235 states and 1949 transitions. [2019-10-13 21:12:49,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:49,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-10-13 21:12:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:49,386 INFO L225 Difference]: With dead ends: 1235 [2019-10-13 21:12:49,386 INFO L226 Difference]: Without dead ends: 666 [2019-10-13 21:12:49,390 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:12:49,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-13 21:12:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2019-10-13 21:12:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2019-10-13 21:12:49,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1042 transitions. [2019-10-13 21:12:49,429 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1042 transitions. Word has length 94 [2019-10-13 21:12:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:49,429 INFO L462 AbstractCegarLoop]: Abstraction has 664 states and 1042 transitions. [2019-10-13 21:12:49,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:12:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1042 transitions. [2019-10-13 21:12:49,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:12:49,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:49,434 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:49,434 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:49,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:49,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1758408303, now seen corresponding path program 1 times [2019-10-13 21:12:49,435 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:49,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525905816] [2019-10-13 21:12:49,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:49,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525905816] [2019-10-13 21:12:49,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:49,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:49,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26325084] [2019-10-13 21:12:49,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:49,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:49,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:49,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:49,540 INFO L87 Difference]: Start difference. First operand 664 states and 1042 transitions. Second operand 4 states. [2019-10-13 21:12:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:49,596 INFO L93 Difference]: Finished difference Result 1283 states and 2035 transitions. [2019-10-13 21:12:49,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:49,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-13 21:12:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:49,602 INFO L225 Difference]: With dead ends: 1283 [2019-10-13 21:12:49,602 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 21:12:49,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 21:12:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 21:12:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 21:12:49,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1019 transitions. [2019-10-13 21:12:49,630 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1019 transitions. Word has length 94 [2019-10-13 21:12:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:49,630 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1019 transitions. [2019-10-13 21:12:49,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1019 transitions. [2019-10-13 21:12:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:12:49,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:49,632 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:49,633 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:49,633 INFO L82 PathProgramCache]: Analyzing trace with hash -795855418, now seen corresponding path program 1 times [2019-10-13 21:12:49,633 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:49,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219126639] [2019-10-13 21:12:49,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:49,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:49,857 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219126639] [2019-10-13 21:12:49,857 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:49,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:49,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867215259] [2019-10-13 21:12:49,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:49,858 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:49,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:49,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:49,859 INFO L87 Difference]: Start difference. First operand 651 states and 1019 transitions. Second operand 6 states. [2019-10-13 21:12:50,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:50,197 INFO L93 Difference]: Finished difference Result 1223 states and 1927 transitions. [2019-10-13 21:12:50,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:50,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-13 21:12:50,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:50,205 INFO L225 Difference]: With dead ends: 1223 [2019-10-13 21:12:50,209 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 21:12:50,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 21:12:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 21:12:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 21:12:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1015 transitions. [2019-10-13 21:12:50,246 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1015 transitions. Word has length 95 [2019-10-13 21:12:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:50,248 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1015 transitions. [2019-10-13 21:12:50,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1015 transitions. [2019-10-13 21:12:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:12:50,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:50,252 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:50,252 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:50,253 INFO L82 PathProgramCache]: Analyzing trace with hash 26339251, now seen corresponding path program 1 times [2019-10-13 21:12:50,253 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:50,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880202720] [2019-10-13 21:12:50,253 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:50,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:50,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:50,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880202720] [2019-10-13 21:12:50,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:50,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:50,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774403340] [2019-10-13 21:12:50,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:50,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:50,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:50,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:50,434 INFO L87 Difference]: Start difference. First operand 651 states and 1015 transitions. Second operand 6 states. [2019-10-13 21:12:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:50,759 INFO L93 Difference]: Finished difference Result 1223 states and 1923 transitions. [2019-10-13 21:12:50,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:50,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-13 21:12:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:50,765 INFO L225 Difference]: With dead ends: 1223 [2019-10-13 21:12:50,766 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 21:12:50,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 21:12:50,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 21:12:50,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 21:12:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1011 transitions. [2019-10-13 21:12:50,805 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1011 transitions. Word has length 96 [2019-10-13 21:12:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:50,806 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1011 transitions. [2019-10-13 21:12:50,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1011 transitions. [2019-10-13 21:12:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:12:50,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:50,808 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:50,808 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:50,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:50,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1115555883, now seen corresponding path program 1 times [2019-10-13 21:12:50,809 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:50,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885383354] [2019-10-13 21:12:50,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:50,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:50,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:50,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885383354] [2019-10-13 21:12:50,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:50,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:50,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176408875] [2019-10-13 21:12:50,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:50,955 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:50,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:50,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:50,955 INFO L87 Difference]: Start difference. First operand 651 states and 1011 transitions. Second operand 6 states. [2019-10-13 21:12:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:51,232 INFO L93 Difference]: Finished difference Result 1223 states and 1919 transitions. [2019-10-13 21:12:51,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:51,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-13 21:12:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:51,239 INFO L225 Difference]: With dead ends: 1223 [2019-10-13 21:12:51,239 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 21:12:51,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:51,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 21:12:51,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 21:12:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 21:12:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1007 transitions. [2019-10-13 21:12:51,267 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1007 transitions. Word has length 97 [2019-10-13 21:12:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:51,267 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1007 transitions. [2019-10-13 21:12:51,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1007 transitions. [2019-10-13 21:12:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:12:51,269 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:51,270 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:51,270 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:51,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:51,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1213864789, now seen corresponding path program 1 times [2019-10-13 21:12:51,271 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:51,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056900266] [2019-10-13 21:12:51,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:51,429 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056900266] [2019-10-13 21:12:51,429 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:51,430 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:51,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233035052] [2019-10-13 21:12:51,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:51,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:51,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:51,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:51,432 INFO L87 Difference]: Start difference. First operand 651 states and 1007 transitions. Second operand 7 states. [2019-10-13 21:12:51,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:51,539 INFO L93 Difference]: Finished difference Result 1223 states and 1915 transitions. [2019-10-13 21:12:51,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:51,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-13 21:12:51,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:51,545 INFO L225 Difference]: With dead ends: 1223 [2019-10-13 21:12:51,546 INFO L226 Difference]: Without dead ends: 630 [2019-10-13 21:12:51,549 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:51,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-13 21:12:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-13 21:12:51,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-13 21:12:51,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 973 transitions. [2019-10-13 21:12:51,576 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 973 transitions. Word has length 97 [2019-10-13 21:12:51,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:51,576 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 973 transitions. [2019-10-13 21:12:51,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:51,576 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 973 transitions. [2019-10-13 21:12:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 21:12:51,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:51,578 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:51,578 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:51,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1892518776, now seen corresponding path program 1 times [2019-10-13 21:12:51,579 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:51,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658234793] [2019-10-13 21:12:51,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,580 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:51,717 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658234793] [2019-10-13 21:12:51,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:51,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:51,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023797225] [2019-10-13 21:12:51,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:51,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:51,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:51,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:51,719 INFO L87 Difference]: Start difference. First operand 630 states and 973 transitions. Second operand 6 states. [2019-10-13 21:12:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:51,832 INFO L93 Difference]: Finished difference Result 1202 states and 1881 transitions. [2019-10-13 21:12:51,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:51,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-13 21:12:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:51,838 INFO L225 Difference]: With dead ends: 1202 [2019-10-13 21:12:51,838 INFO L226 Difference]: Without dead ends: 630 [2019-10-13 21:12:51,841 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-13 21:12:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-13 21:12:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-13 21:12:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 972 transitions. [2019-10-13 21:12:51,871 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 972 transitions. Word has length 98 [2019-10-13 21:12:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:51,872 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 972 transitions. [2019-10-13 21:12:51,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:51,873 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 972 transitions. [2019-10-13 21:12:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:12:51,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:51,875 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:51,875 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:51,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:51,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1579550352, now seen corresponding path program 1 times [2019-10-13 21:12:51,876 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:51,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561618484] [2019-10-13 21:12:51,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:51,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:52,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561618484] [2019-10-13 21:12:52,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:52,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:52,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137610455] [2019-10-13 21:12:52,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:52,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:52,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:52,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:52,020 INFO L87 Difference]: Start difference. First operand 630 states and 972 transitions. Second operand 6 states. [2019-10-13 21:12:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:52,154 INFO L93 Difference]: Finished difference Result 1202 states and 1880 transitions. [2019-10-13 21:12:52,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:52,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-13 21:12:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:52,160 INFO L225 Difference]: With dead ends: 1202 [2019-10-13 21:12:52,161 INFO L226 Difference]: Without dead ends: 630 [2019-10-13 21:12:52,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-13 21:12:52,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-13 21:12:52,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-13 21:12:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 971 transitions. [2019-10-13 21:12:52,202 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 971 transitions. Word has length 99 [2019-10-13 21:12:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:52,205 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 971 transitions. [2019-10-13 21:12:52,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:52,205 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 971 transitions. [2019-10-13 21:12:52,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 21:12:52,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:52,207 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:52,207 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:52,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:52,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1838449469, now seen corresponding path program 1 times [2019-10-13 21:12:52,208 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:52,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328378809] [2019-10-13 21:12:52,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:52,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328378809] [2019-10-13 21:12:52,418 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:52,418 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:12:52,419 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023176915] [2019-10-13 21:12:52,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:12:52,419 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:52,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:12:52,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:52,420 INFO L87 Difference]: Start difference. First operand 630 states and 971 transitions. Second operand 12 states. [2019-10-13 21:12:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:52,630 INFO L93 Difference]: Finished difference Result 1203 states and 1879 transitions. [2019-10-13 21:12:52,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:12:52,633 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-10-13 21:12:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:52,638 INFO L225 Difference]: With dead ends: 1203 [2019-10-13 21:12:52,638 INFO L226 Difference]: Without dead ends: 630 [2019-10-13 21:12:52,642 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:12:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-13 21:12:52,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-13 21:12:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-13 21:12:52,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 970 transitions. [2019-10-13 21:12:52,665 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 970 transitions. Word has length 100 [2019-10-13 21:12:52,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:52,666 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 970 transitions. [2019-10-13 21:12:52,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:12:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 970 transitions. [2019-10-13 21:12:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:12:52,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:52,668 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:52,668 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:52,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:52,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1351924293, now seen corresponding path program 1 times [2019-10-13 21:12:52,669 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:52,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131890434] [2019-10-13 21:12:52,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:52,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:52,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131890434] [2019-10-13 21:12:52,858 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:52,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:52,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060353593] [2019-10-13 21:12:52,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:52,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:52,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:52,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:52,860 INFO L87 Difference]: Start difference. First operand 630 states and 970 transitions. Second operand 6 states. [2019-10-13 21:12:57,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:57,190 INFO L93 Difference]: Finished difference Result 1863 states and 2953 transitions. [2019-10-13 21:12:57,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:57,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-10-13 21:12:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:57,202 INFO L225 Difference]: With dead ends: 1863 [2019-10-13 21:12:57,202 INFO L226 Difference]: Without dead ends: 1299 [2019-10-13 21:12:57,206 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2019-10-13 21:12:57,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1172. [2019-10-13 21:12:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2019-10-13 21:12:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1850 transitions. [2019-10-13 21:12:57,262 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1850 transitions. Word has length 101 [2019-10-13 21:12:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:57,263 INFO L462 AbstractCegarLoop]: Abstraction has 1172 states and 1850 transitions. [2019-10-13 21:12:57,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1850 transitions. [2019-10-13 21:12:57,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:12:57,269 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:57,270 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:57,270 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:57,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:57,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1530865345, now seen corresponding path program 1 times [2019-10-13 21:12:57,271 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:57,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777552165] [2019-10-13 21:12:57,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:57,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:57,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:12:57,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777552165] [2019-10-13 21:12:57,511 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:57,511 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:12:57,511 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463273797] [2019-10-13 21:12:57,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:12:57,513 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:57,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:12:57,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:57,514 INFO L87 Difference]: Start difference. First operand 1172 states and 1850 transitions. Second operand 12 states. [2019-10-13 21:13:11,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:11,027 INFO L93 Difference]: Finished difference Result 3848 states and 6081 transitions. [2019-10-13 21:13:11,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:13:11,030 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2019-10-13 21:13:11,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:11,058 INFO L225 Difference]: With dead ends: 3848 [2019-10-13 21:13:11,058 INFO L226 Difference]: Without dead ends: 2742 [2019-10-13 21:13:11,067 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:13:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2019-10-13 21:13:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2684. [2019-10-13 21:13:11,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2684 states. [2019-10-13 21:13:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4196 transitions. [2019-10-13 21:13:11,217 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4196 transitions. Word has length 159 [2019-10-13 21:13:11,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:11,218 INFO L462 AbstractCegarLoop]: Abstraction has 2684 states and 4196 transitions. [2019-10-13 21:13:11,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:13:11,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4196 transitions. [2019-10-13 21:13:11,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 21:13:11,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:11,224 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:11,225 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:11,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:11,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1845349951, now seen corresponding path program 1 times [2019-10-13 21:13:11,225 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:11,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083975187] [2019-10-13 21:13:11,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:11,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:11,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:13:11,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083975187] [2019-10-13 21:13:11,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676436220] [2019-10-13 21:13:11,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:12,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:13:12,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:13:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:13:12,544 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:13:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:13:12,966 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:13:12,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:13:12,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123969982] [2019-10-13 21:13:12,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:12,967 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:12,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:12,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:13:12,968 INFO L87 Difference]: Start difference. First operand 2684 states and 4196 transitions. Second operand 3 states. [2019-10-13 21:13:13,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:13,139 INFO L93 Difference]: Finished difference Result 6746 states and 10695 transitions. [2019-10-13 21:13:13,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:13,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-10-13 21:13:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:13,166 INFO L225 Difference]: With dead ends: 6746 [2019-10-13 21:13:13,167 INFO L226 Difference]: Without dead ends: 4128 [2019-10-13 21:13:13,181 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:13:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2019-10-13 21:13:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 4126. [2019-10-13 21:13:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2019-10-13 21:13:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 6513 transitions. [2019-10-13 21:13:13,423 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 6513 transitions. Word has length 160 [2019-10-13 21:13:13,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:13,424 INFO L462 AbstractCegarLoop]: Abstraction has 4126 states and 6513 transitions. [2019-10-13 21:13:13,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:13,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 6513 transitions. [2019-10-13 21:13:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:13:13,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:13,430 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:13,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:13,641 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:13,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1370078289, now seen corresponding path program 1 times [2019-10-13 21:13:13,642 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:13,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209713321] [2019-10-13 21:13:13,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:13,643 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:13,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:13:13,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209713321] [2019-10-13 21:13:13,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539928701] [2019-10-13 21:13:13,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:14,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:13:14,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:13:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:13:14,616 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:13:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:13:14,924 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:13:14,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:13:14,925 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355576827] [2019-10-13 21:13:14,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:14,926 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:14,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:14,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:13:14,926 INFO L87 Difference]: Start difference. First operand 4126 states and 6513 transitions. Second operand 3 states. [2019-10-13 21:13:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:15,136 INFO L93 Difference]: Finished difference Result 11074 states and 17802 transitions. [2019-10-13 21:13:15,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:15,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:13:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:15,186 INFO L225 Difference]: With dead ends: 11074 [2019-10-13 21:13:15,186 INFO L226 Difference]: Without dead ends: 7014 [2019-10-13 21:13:15,307 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:13:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2019-10-13 21:13:15,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 7011. [2019-10-13 21:13:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7011 states. [2019-10-13 21:13:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 11238 transitions. [2019-10-13 21:13:15,596 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 11238 transitions. Word has length 161 [2019-10-13 21:13:15,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:15,597 INFO L462 AbstractCegarLoop]: Abstraction has 7011 states and 11238 transitions. [2019-10-13 21:13:15,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:15,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 11238 transitions. [2019-10-13 21:13:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:13:15,603 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:15,604 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:15,818 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:15,819 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:15,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:15,820 INFO L82 PathProgramCache]: Analyzing trace with hash -478437439, now seen corresponding path program 1 times [2019-10-13 21:13:15,820 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:15,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737083152] [2019-10-13 21:13:15,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:15,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:15,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 21:13:16,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737083152] [2019-10-13 21:13:16,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63416941] [2019-10-13 21:13:16,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:13:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:16,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 3080 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:13:16,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:13:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:13:16,785 INFO L321 TraceCheckSpWp]: Computing backward predicates...