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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:11:15,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:11:15,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:11:15,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:11:15,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:11:15,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:11:15,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:11:15,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:11:15,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:11:15,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:11:15,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:11:15,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:11:15,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:11:15,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:11:15,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:11:15,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:11:15,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:11:15,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:11:15,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:11:15,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:11:15,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:11:15,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:11:15,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:11:15,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:11:15,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:11:15,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:11:15,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:11:15,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:11:15,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:11:15,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:11:15,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:11:15,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:11:15,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:11:15,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:11:15,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:11:15,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:11:15,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:11:15,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:11:15,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:11:15,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:11:15,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:11:15,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:11:15,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:11:15,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:11:15,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:11:15,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:11:15,389 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:11:15,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:11:15,389 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:11:15,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:11:15,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:11:15,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:11:15,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:11:15,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:11:15,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:11:15,390 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:11:15,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:11:15,391 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:11:15,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:11:15,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:11:15,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:11:15,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:11:15,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:11:15,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:15,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:11:15,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:11:15,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:11:15,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:11:15,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:11:15,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:11:15,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:11:15,683 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:11:15,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:11:15,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:11:15,704 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:11:15,705 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:11:15,706 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-10-15 01:11:15,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f445acc9/43a772c6e84a4f7b9950dd17c2fed4ce/FLAGd76c2cc02 [2019-10-15 01:11:16,470 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:11:16,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-10-15 01:11:16,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f445acc9/43a772c6e84a4f7b9950dd17c2fed4ce/FLAGd76c2cc02 [2019-10-15 01:11:16,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f445acc9/43a772c6e84a4f7b9950dd17c2fed4ce [2019-10-15 01:11:16,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:11:16,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:11:16,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:16,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:11:16,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:11:16,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:16" (1/1) ... [2019-10-15 01:11:16,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fac7d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:16, skipping insertion in model container [2019-10-15 01:11:16,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:16" (1/1) ... [2019-10-15 01:11:16,672 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:11:16,755 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:11:17,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:17,542 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:11:17,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:17,792 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:11:17,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17 WrapperNode [2019-10-15 01:11:17,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:17,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:11:17,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:11:17,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:11:17,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:17,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:17,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:17,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:17,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:17,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:18,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... [2019-10-15 01:11:18,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:11:18,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:11:18,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:11:18,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:11:18,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:11:18,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:11:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:11:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:11:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:11:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:11:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:11:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:11:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:11:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:11:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:11:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:11:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:11:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:11:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:11:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:11:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:11:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:11:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:11:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:11:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:11:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:11:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:11:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:11:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:11:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:11:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:11:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:11:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:11:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:11:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:11:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:11:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:11:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:11:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:11:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:11:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:11:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:11:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:11:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:11:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:11:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:11:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:11:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:11:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:11:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:11:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:11:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:11:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:11:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:11:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:11:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:11:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:11:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:11:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:11:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:11:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:11:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:11:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:11:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:11:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:11:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:11:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:11:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:11:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:11:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:11:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:11:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:11:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:11:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:11:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:11:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:11:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:11:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:11:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:11:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:11:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:11:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:11:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:11:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:11:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:11:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:11:18,124 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:11:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:11:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:11:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:11:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:11:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:11:18,125 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:11:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:11:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:11:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:11:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:11:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:11:18,126 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:11:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:11:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:11:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:11:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:11:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:11:18,127 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:11:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:11:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:11:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:18,128 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:11:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:11:18,129 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:11:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:11:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:11:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:18,130 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:11:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:11:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:11:18,132 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:11:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:11:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:18,133 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:11:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:11:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:11:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:11:18,134 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:11:18,135 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:11:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:11:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:11:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:11:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:11:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:11:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:11:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:11:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:11:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:11:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:11:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:11:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:11:18,151 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:11:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:11:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:11:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:11:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:11:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:11:18,152 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:11:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:11:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:11:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:11:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:11:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:11:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:11:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:11:18,153 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:11:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:11:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:11:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:11:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:11:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:11:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:11:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:11:20,549 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:11:20,549 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:11:20,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:20 BoogieIcfgContainer [2019-10-15 01:11:20,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:11:20,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:11:20,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:11:20,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:11:20,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:11:16" (1/3) ... [2019-10-15 01:11:20,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a923c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:20, skipping insertion in model container [2019-10-15 01:11:20,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:17" (2/3) ... [2019-10-15 01:11:20,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a923c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:20, skipping insertion in model container [2019-10-15 01:11:20,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:20" (3/3) ... [2019-10-15 01:11:20,561 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2019-10-15 01:11:20,571 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:11:20,581 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:11:20,593 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:11:20,631 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:11:20,632 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:11:20,632 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:11:20,632 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:11:20,632 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:11:20,632 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:11:20,632 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:11:20,632 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:11:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states. [2019-10-15 01:11:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 01:11:20,697 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:20,698 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] [2019-10-15 01:11:20,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:20,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:20,704 INFO L82 PathProgramCache]: Analyzing trace with hash 961296188, now seen corresponding path program 1 times [2019-10-15 01:11:20,713 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:20,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180429676] [2019-10-15 01:11:20,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:20,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:20,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:21,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180429676] [2019-10-15 01:11:21,294 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:21,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:21,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747621162] [2019-10-15 01:11:21,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:21,302 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:21,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:21,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:21,321 INFO L87 Difference]: Start difference. First operand 793 states. Second operand 4 states. [2019-10-15 01:11:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:21,534 INFO L93 Difference]: Finished difference Result 1235 states and 1985 transitions. [2019-10-15 01:11:21,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:21,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-10-15 01:11:21,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:21,582 INFO L225 Difference]: With dead ends: 1235 [2019-10-15 01:11:21,582 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:11:21,598 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 [2019-10-15 01:11:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:11:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-15 01:11:21,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:11:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 994 transitions. [2019-10-15 01:11:21,760 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 994 transitions. Word has length 87 [2019-10-15 01:11:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:21,761 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 994 transitions. [2019-10-15 01:11:21,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 994 transitions. [2019-10-15 01:11:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-15 01:11:21,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:21,774 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] [2019-10-15 01:11:21,775 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:21,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:21,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1704388894, now seen corresponding path program 1 times [2019-10-15 01:11:21,776 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:21,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379347417] [2019-10-15 01:11:21,777 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:21,777 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:21,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:22,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379347417] [2019-10-15 01:11:22,009 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:22,009 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:22,009 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61426509] [2019-10-15 01:11:22,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:22,018 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:22,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:22,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:22,020 INFO L87 Difference]: Start difference. First operand 626 states and 994 transitions. Second operand 4 states. [2019-10-15 01:11:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:22,133 INFO L93 Difference]: Finished difference Result 1215 states and 1946 transitions. [2019-10-15 01:11:22,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:22,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-15 01:11:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:22,142 INFO L225 Difference]: With dead ends: 1215 [2019-10-15 01:11:22,142 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:11:22,149 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 [2019-10-15 01:11:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:11:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-15 01:11:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:11:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 993 transitions. [2019-10-15 01:11:22,182 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 993 transitions. Word has length 90 [2019-10-15 01:11:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:22,183 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 993 transitions. [2019-10-15 01:11:22,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 993 transitions. [2019-10-15 01:11:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 01:11:22,185 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:22,185 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] [2019-10-15 01:11:22,185 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:22,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:22,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1677160523, now seen corresponding path program 1 times [2019-10-15 01:11:22,186 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:22,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450634908] [2019-10-15 01:11:22,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,187 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:22,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450634908] [2019-10-15 01:11:22,334 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:22,334 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:22,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863111031] [2019-10-15 01:11:22,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:22,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:22,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:22,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:22,336 INFO L87 Difference]: Start difference. First operand 626 states and 993 transitions. Second operand 4 states. [2019-10-15 01:11:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:22,451 INFO L93 Difference]: Finished difference Result 1215 states and 1945 transitions. [2019-10-15 01:11:22,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:22,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-15 01:11:22,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:22,460 INFO L225 Difference]: With dead ends: 1215 [2019-10-15 01:11:22,460 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:11:22,466 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 [2019-10-15 01:11:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:11:22,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-15 01:11:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:11:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 992 transitions. [2019-10-15 01:11:22,494 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 992 transitions. Word has length 91 [2019-10-15 01:11:22,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:22,495 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 992 transitions. [2019-10-15 01:11:22,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 992 transitions. [2019-10-15 01:11:22,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:11:22,497 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:22,497 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] [2019-10-15 01:11:22,497 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:22,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:22,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1700539194, now seen corresponding path program 1 times [2019-10-15 01:11:22,498 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:22,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367137121] [2019-10-15 01:11:22,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:22,647 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367137121] [2019-10-15 01:11:22,647 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:22,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:22,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675383375] [2019-10-15 01:11:22,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:22,648 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:22,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:22,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:22,649 INFO L87 Difference]: Start difference. First operand 626 states and 992 transitions. Second operand 4 states. [2019-10-15 01:11:22,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:22,720 INFO L93 Difference]: Finished difference Result 1215 states and 1944 transitions. [2019-10-15 01:11:22,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:22,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-15 01:11:22,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:22,737 INFO L225 Difference]: With dead ends: 1215 [2019-10-15 01:11:22,738 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:11:22,743 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 [2019-10-15 01:11:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:11:22,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-15 01:11:22,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:11:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 991 transitions. [2019-10-15 01:11:22,777 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 991 transitions. Word has length 92 [2019-10-15 01:11:22,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:22,778 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 991 transitions. [2019-10-15 01:11:22,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:22,778 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 991 transitions. [2019-10-15 01:11:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:11:22,785 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:22,786 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] [2019-10-15 01:11:22,786 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:22,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:22,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1002231129, now seen corresponding path program 1 times [2019-10-15 01:11:22,786 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:22,787 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29748403] [2019-10-15 01:11:22,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:22,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:22,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29748403] [2019-10-15 01:11:22,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:22,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:22,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722926817] [2019-10-15 01:11:22,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:22,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:22,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:22,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:22,924 INFO L87 Difference]: Start difference. First operand 626 states and 991 transitions. Second operand 4 states. [2019-10-15 01:11:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:22,980 INFO L93 Difference]: Finished difference Result 1215 states and 1943 transitions. [2019-10-15 01:11:22,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:22,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-10-15 01:11:22,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:22,986 INFO L225 Difference]: With dead ends: 1215 [2019-10-15 01:11:22,986 INFO L226 Difference]: Without dead ends: 626 [2019-10-15 01:11:22,989 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 [2019-10-15 01:11:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-15 01:11:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-15 01:11:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:11:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 990 transitions. [2019-10-15 01:11:23,010 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 990 transitions. Word has length 93 [2019-10-15 01:11:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:23,010 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 990 transitions. [2019-10-15 01:11:23,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 990 transitions. [2019-10-15 01:11:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:11:23,012 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:23,012 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] [2019-10-15 01:11:23,013 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:23,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:23,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1978692950, now seen corresponding path program 1 times [2019-10-15 01:11:23,013 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:23,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636627697] [2019-10-15 01:11:23,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:23,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636627697] [2019-10-15 01:11:23,197 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:23,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:23,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399533396] [2019-10-15 01:11:23,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:23,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:23,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:23,199 INFO L87 Difference]: Start difference. First operand 626 states and 990 transitions. Second operand 10 states. [2019-10-15 01:11:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:23,404 INFO L93 Difference]: Finished difference Result 1173 states and 1863 transitions. [2019-10-15 01:11:23,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:23,405 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-10-15 01:11:23,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:23,410 INFO L225 Difference]: With dead ends: 1173 [2019-10-15 01:11:23,410 INFO L226 Difference]: Without dead ends: 635 [2019-10-15 01:11:23,412 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 [2019-10-15 01:11:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-15 01:11:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2019-10-15 01:11:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-15 01:11:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 999 transitions. [2019-10-15 01:11:23,440 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 999 transitions. Word has length 94 [2019-10-15 01:11:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:23,442 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 999 transitions. [2019-10-15 01:11:23,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 999 transitions. [2019-10-15 01:11:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:11:23,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:23,445 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] [2019-10-15 01:11:23,446 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:23,446 INFO L82 PathProgramCache]: Analyzing trace with hash 48073845, now seen corresponding path program 1 times [2019-10-15 01:11:23,446 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:23,446 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682331868] [2019-10-15 01:11:23,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:23,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682331868] [2019-10-15 01:11:23,550 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:23,550 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:23,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79718193] [2019-10-15 01:11:23,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:23,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:23,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:23,552 INFO L87 Difference]: Start difference. First operand 633 states and 999 transitions. Second operand 4 states. [2019-10-15 01:11:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:23,607 INFO L93 Difference]: Finished difference Result 1221 states and 1949 transitions. [2019-10-15 01:11:23,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:23,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-15 01:11:23,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:23,613 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:11:23,613 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:11:23,616 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 [2019-10-15 01:11:23,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:11:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:11:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:11:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 976 transitions. [2019-10-15 01:11:23,637 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 976 transitions. Word has length 94 [2019-10-15 01:11:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:23,638 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 976 transitions. [2019-10-15 01:11:23,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:23,638 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 976 transitions. [2019-10-15 01:11:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:11:23,640 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:23,640 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] [2019-10-15 01:11:23,640 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:23,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1242574475, now seen corresponding path program 1 times [2019-10-15 01:11:23,641 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:23,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335464730] [2019-10-15 01:11:23,641 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:23,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:23,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335464730] [2019-10-15 01:11:23,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:23,773 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:23,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857777570] [2019-10-15 01:11:23,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:23,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:23,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:23,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:23,775 INFO L87 Difference]: Start difference. First operand 620 states and 976 transitions. Second operand 6 states. [2019-10-15 01:11:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:24,010 INFO L93 Difference]: Finished difference Result 1161 states and 1841 transitions. [2019-10-15 01:11:24,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:24,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-15 01:11:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:24,016 INFO L225 Difference]: With dead ends: 1161 [2019-10-15 01:11:24,016 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:11:24,019 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 [2019-10-15 01:11:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:11:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:11:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:11:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 972 transitions. [2019-10-15 01:11:24,041 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 972 transitions. Word has length 95 [2019-10-15 01:11:24,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:24,041 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 972 transitions. [2019-10-15 01:11:24,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:24,042 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 972 transitions. [2019-10-15 01:11:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:11:24,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:24,043 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] [2019-10-15 01:11:24,044 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:24,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:24,044 INFO L82 PathProgramCache]: Analyzing trace with hash 96991961, now seen corresponding path program 1 times [2019-10-15 01:11:24,044 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:24,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036529676] [2019-10-15 01:11:24,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,045 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:24,247 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036529676] [2019-10-15 01:11:24,247 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:24,247 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:24,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305125137] [2019-10-15 01:11:24,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:24,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:24,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:24,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:24,249 INFO L87 Difference]: Start difference. First operand 620 states and 972 transitions. Second operand 6 states. [2019-10-15 01:11:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:24,464 INFO L93 Difference]: Finished difference Result 1161 states and 1837 transitions. [2019-10-15 01:11:24,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:24,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-15 01:11:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:24,469 INFO L225 Difference]: With dead ends: 1161 [2019-10-15 01:11:24,470 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:11:24,473 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 [2019-10-15 01:11:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:11:24,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:11:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:11:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 968 transitions. [2019-10-15 01:11:24,494 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 968 transitions. Word has length 96 [2019-10-15 01:11:24,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:24,495 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 968 transitions. [2019-10-15 01:11:24,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 968 transitions. [2019-10-15 01:11:24,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:11:24,497 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:24,497 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] [2019-10-15 01:11:24,497 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:24,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:24,498 INFO L82 PathProgramCache]: Analyzing trace with hash 44864186, now seen corresponding path program 1 times [2019-10-15 01:11:24,498 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:24,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904385479] [2019-10-15 01:11:24,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:24,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904385479] [2019-10-15 01:11:24,622 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:24,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:24,622 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733576571] [2019-10-15 01:11:24,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:24,623 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:24,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:24,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:24,624 INFO L87 Difference]: Start difference. First operand 620 states and 968 transitions. Second operand 6 states. [2019-10-15 01:11:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:24,832 INFO L93 Difference]: Finished difference Result 1161 states and 1833 transitions. [2019-10-15 01:11:24,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:24,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-15 01:11:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:24,838 INFO L225 Difference]: With dead ends: 1161 [2019-10-15 01:11:24,838 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:11:24,845 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 [2019-10-15 01:11:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:11:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:11:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:11:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 964 transitions. [2019-10-15 01:11:24,870 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 964 transitions. Word has length 97 [2019-10-15 01:11:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:24,870 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 964 transitions. [2019-10-15 01:11:24,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:24,870 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 964 transitions. [2019-10-15 01:11:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:11:24,873 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:24,873 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] [2019-10-15 01:11:24,873 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:24,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2010410810, now seen corresponding path program 1 times [2019-10-15 01:11:24,874 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:24,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467423386] [2019-10-15 01:11:24,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:24,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:25,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467423386] [2019-10-15 01:11:25,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:25,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838493753] [2019-10-15 01:11:25,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:25,008 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:25,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:25,009 INFO L87 Difference]: Start difference. First operand 620 states and 964 transitions. Second operand 7 states. [2019-10-15 01:11:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,097 INFO L93 Difference]: Finished difference Result 1161 states and 1829 transitions. [2019-10-15 01:11:25,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:25,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-15 01:11:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,103 INFO L225 Difference]: With dead ends: 1161 [2019-10-15 01:11:25,103 INFO L226 Difference]: Without dead ends: 599 [2019-10-15 01:11:25,106 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 [2019-10-15 01:11:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-15 01:11:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-15 01:11:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-15 01:11:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 930 transitions. [2019-10-15 01:11:25,140 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 930 transitions. Word has length 97 [2019-10-15 01:11:25,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,140 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 930 transitions. [2019-10-15 01:11:25,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:25,141 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 930 transitions. [2019-10-15 01:11:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:11:25,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,142 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] [2019-10-15 01:11:25,143 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:25,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:25,143 INFO L82 PathProgramCache]: Analyzing trace with hash -200111170, now seen corresponding path program 1 times [2019-10-15 01:11:25,143 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:25,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156150490] [2019-10-15 01:11:25,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:25,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156150490] [2019-10-15 01:11:25,255 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,256 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:25,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640236186] [2019-10-15 01:11:25,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:25,257 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:25,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:25,257 INFO L87 Difference]: Start difference. First operand 599 states and 930 transitions. Second operand 6 states. [2019-10-15 01:11:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,397 INFO L93 Difference]: Finished difference Result 1140 states and 1795 transitions. [2019-10-15 01:11:25,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:25,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-15 01:11:25,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,402 INFO L225 Difference]: With dead ends: 1140 [2019-10-15 01:11:25,402 INFO L226 Difference]: Without dead ends: 599 [2019-10-15 01:11:25,405 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 [2019-10-15 01:11:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-15 01:11:25,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-15 01:11:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-15 01:11:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 929 transitions. [2019-10-15 01:11:25,425 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 929 transitions. Word has length 98 [2019-10-15 01:11:25,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,425 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 929 transitions. [2019-10-15 01:11:25,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 929 transitions. [2019-10-15 01:11:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:11:25,427 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,427 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] [2019-10-15 01:11:25,427 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:25,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:25,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2128394241, now seen corresponding path program 1 times [2019-10-15 01:11:25,428 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:25,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691757699] [2019-10-15 01:11:25,428 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,429 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:25,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691757699] [2019-10-15 01:11:25,537 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:25,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414773520] [2019-10-15 01:11:25,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:25,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:25,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:25,539 INFO L87 Difference]: Start difference. First operand 599 states and 929 transitions. Second operand 6 states. [2019-10-15 01:11:25,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:25,629 INFO L93 Difference]: Finished difference Result 1140 states and 1794 transitions. [2019-10-15 01:11:25,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:25,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-15 01:11:25,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:25,635 INFO L225 Difference]: With dead ends: 1140 [2019-10-15 01:11:25,635 INFO L226 Difference]: Without dead ends: 599 [2019-10-15 01:11:25,638 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 [2019-10-15 01:11:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-15 01:11:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-15 01:11:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-15 01:11:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 928 transitions. [2019-10-15 01:11:25,657 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 928 transitions. Word has length 99 [2019-10-15 01:11:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:25,658 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 928 transitions. [2019-10-15 01:11:25,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 928 transitions. [2019-10-15 01:11:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 01:11:25,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:25,660 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] [2019-10-15 01:11:25,660 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:25,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:25,661 INFO L82 PathProgramCache]: Analyzing trace with hash -404641629, now seen corresponding path program 1 times [2019-10-15 01:11:25,661 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:25,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594046113] [2019-10-15 01:11:25,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:25,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:25,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594046113] [2019-10-15 01:11:25,838 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:25,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:11:25,838 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253918700] [2019-10-15 01:11:25,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:11:25,839 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:25,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:11:25,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:11:25,840 INFO L87 Difference]: Start difference. First operand 599 states and 928 transitions. Second operand 12 states. [2019-10-15 01:11:26,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:26,016 INFO L93 Difference]: Finished difference Result 1141 states and 1793 transitions. [2019-10-15 01:11:26,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:11:26,017 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-10-15 01:11:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:26,022 INFO L225 Difference]: With dead ends: 1141 [2019-10-15 01:11:26,022 INFO L226 Difference]: Without dead ends: 599 [2019-10-15 01:11:26,025 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:11:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-15 01:11:26,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-15 01:11:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-15 01:11:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 927 transitions. [2019-10-15 01:11:26,047 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 927 transitions. Word has length 100 [2019-10-15 01:11:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:26,047 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 927 transitions. [2019-10-15 01:11:26,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:11:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 927 transitions. [2019-10-15 01:11:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 01:11:26,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:26,050 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] [2019-10-15 01:11:26,050 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:26,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:26,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1635405980, now seen corresponding path program 1 times [2019-10-15 01:11:26,051 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:26,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850719496] [2019-10-15 01:11:26,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:26,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:26,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850719496] [2019-10-15 01:11:26,204 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:26,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:26,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396674839] [2019-10-15 01:11:26,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:26,205 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:26,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:26,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:26,206 INFO L87 Difference]: Start difference. First operand 599 states and 927 transitions. Second operand 10 states. [2019-10-15 01:11:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:32,567 INFO L93 Difference]: Finished difference Result 1767 states and 2845 transitions. [2019-10-15 01:11:32,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:11:32,567 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2019-10-15 01:11:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:32,577 INFO L225 Difference]: With dead ends: 1767 [2019-10-15 01:11:32,577 INFO L226 Difference]: Without dead ends: 1234 [2019-10-15 01:11:32,580 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:11:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2019-10-15 01:11:32,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1204. [2019-10-15 01:11:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-10-15 01:11:32,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1913 transitions. [2019-10-15 01:11:32,635 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1913 transitions. Word has length 101 [2019-10-15 01:11:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:32,635 INFO L462 AbstractCegarLoop]: Abstraction has 1204 states and 1913 transitions. [2019-10-15 01:11:32,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:32,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1913 transitions. [2019-10-15 01:11:32,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-15 01:11:32,637 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:32,637 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, 1] [2019-10-15 01:11:32,638 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:32,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:32,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1559201877, now seen corresponding path program 1 times [2019-10-15 01:11:32,638 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:32,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248086104] [2019-10-15 01:11:32,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:32,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:32,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:32,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248086104] [2019-10-15 01:11:32,805 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:32,806 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:32,806 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605803950] [2019-10-15 01:11:32,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:32,808 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:32,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:32,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:32,809 INFO L87 Difference]: Start difference. First operand 1204 states and 1913 transitions. Second operand 10 states. [2019-10-15 01:11:39,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:39,807 INFO L93 Difference]: Finished difference Result 3755 states and 6178 transitions. [2019-10-15 01:11:39,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:11:39,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2019-10-15 01:11:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:39,827 INFO L225 Difference]: With dead ends: 3755 [2019-10-15 01:11:39,827 INFO L226 Difference]: Without dead ends: 2617 [2019-10-15 01:11:39,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:11:39,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2019-10-15 01:11:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2576. [2019-10-15 01:11:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2576 states. [2019-10-15 01:11:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 4181 transitions. [2019-10-15 01:11:39,966 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 4181 transitions. Word has length 102 [2019-10-15 01:11:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:39,967 INFO L462 AbstractCegarLoop]: Abstraction has 2576 states and 4181 transitions. [2019-10-15 01:11:39,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:39,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 4181 transitions. [2019-10-15 01:11:39,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-15 01:11:39,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:39,969 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, 1, 1] [2019-10-15 01:11:39,969 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash -962393984, now seen corresponding path program 1 times [2019-10-15 01:11:39,970 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:39,970 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113702484] [2019-10-15 01:11:39,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:39,970 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:39,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:40,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113702484] [2019-10-15 01:11:40,120 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:40,121 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:40,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666325383] [2019-10-15 01:11:40,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:40,121 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:40,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:40,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:40,122 INFO L87 Difference]: Start difference. First operand 2576 states and 4181 transitions. Second operand 10 states. [2019-10-15 01:11:46,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:46,496 INFO L93 Difference]: Finished difference Result 8357 states and 14067 transitions. [2019-10-15 01:11:46,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:11:46,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-10-15 01:11:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:46,545 INFO L225 Difference]: With dead ends: 8357 [2019-10-15 01:11:46,545 INFO L226 Difference]: Without dead ends: 5847 [2019-10-15 01:11:46,562 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:11:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2019-10-15 01:11:46,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 5784. [2019-10-15 01:11:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5784 states. [2019-10-15 01:11:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 9591 transitions. [2019-10-15 01:11:46,929 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 9591 transitions. Word has length 103 [2019-10-15 01:11:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:46,930 INFO L462 AbstractCegarLoop]: Abstraction has 5784 states and 9591 transitions. [2019-10-15 01:11:46,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 9591 transitions. [2019-10-15 01:11:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-15 01:11:46,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:46,932 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, 1, 1, 1] [2019-10-15 01:11:46,932 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:46,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1204185167, now seen corresponding path program 1 times [2019-10-15 01:11:46,933 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:46,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892386548] [2019-10-15 01:11:46,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:46,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:46,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:47,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892386548] [2019-10-15 01:11:47,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:47,109 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:47,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129914009] [2019-10-15 01:11:47,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:47,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:47,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:47,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:47,110 INFO L87 Difference]: Start difference. First operand 5784 states and 9591 transitions. Second operand 10 states.