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_spec3_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:11:42,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:11:42,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:11:42,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:11:42,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:11:42,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:11:42,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:11:42,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:11:42,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:11:42,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:11:42,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:11:42,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:11:42,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:11:42,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:11:42,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:11:42,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:11:42,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:11:42,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:11:42,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:11:42,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:11:42,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:11:42,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:11:42,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:11:42,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:11:42,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:11:42,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:11:42,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:11:42,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:11:42,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:11:42,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:11:42,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:11:42,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:11:42,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:11:42,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:11:42,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:11:42,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:11:42,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:11:42,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:11:42,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:11:42,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:11:42,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:11:42,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:11:42,561 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:11:42,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:11:42,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:11:42,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:11:42,565 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:11:42,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:11:42,565 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:11:42,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:11:42,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:11:42,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:11:42,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:11:42,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:11:42,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:11:42,568 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:11:42,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:11:42,569 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:11:42,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:11:42,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:11:42,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:11:42,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:11:42,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:11:42,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:11:42,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:11:42,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:11:42,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:11:42,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:11:42,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:11:42,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:11:42,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:11:42,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:11:42,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:11:42,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:11:42,886 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:11:42,887 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:11:42,887 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-10-13 21:11:42,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d60a00347/e2f071ee2a5d440e852fa9da76e0e9e6/FLAG54848c8c1 [2019-10-13 21:11:43,646 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:11:43,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product24.cil.c [2019-10-13 21:11:43,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d60a00347/e2f071ee2a5d440e852fa9da76e0e9e6/FLAG54848c8c1 [2019-10-13 21:11:43,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d60a00347/e2f071ee2a5d440e852fa9da76e0e9e6 [2019-10-13 21:11:43,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:11:43,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:11:43,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:43,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:11:43,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:11:43,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:43" (1/1) ... [2019-10-13 21:11:43,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781867a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:43, skipping insertion in model container [2019-10-13 21:11:43,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:11:43" (1/1) ... [2019-10-13 21:11:43,832 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:11:43,903 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:11:44,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:44,681 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:11:44,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:11:45,054 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:11:45,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45 WrapperNode [2019-10-13 21:11:45,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:11:45,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:11:45,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:11:45,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:11:45,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45" (1/1) ... [2019-10-13 21:11:45,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45" (1/1) ... [2019-10-13 21:11:45,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45" (1/1) ... [2019-10-13 21:11:45,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45" (1/1) ... [2019-10-13 21:11:45,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45" (1/1) ... [2019-10-13 21:11:45,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45" (1/1) ... [2019-10-13 21:11:45,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45" (1/1) ... [2019-10-13 21:11:45,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:11:45,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:11:45,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:11:45,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:11:45,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:11:45,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:11:45,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:11:45,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:45,356 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:11:45,357 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:11:45,358 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:11:45,358 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:11:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:11:45,359 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:11:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:11:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:11:45,360 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:11:45,361 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:11:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:11:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:11:45,362 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:11:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:11:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:11:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:11:45,365 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:11:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:11:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:11:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:11:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:11:45,367 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:11:45,367 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:11:45,368 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:11:45,368 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:11:45,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:11:45,369 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:11:45,369 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:11:45,369 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:11:45,369 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:11:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:11:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:11:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:11:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:11:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:11:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:11:45,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:11:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:11:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:11:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 21:11:45,372 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 21:11:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:11:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:11:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:11:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 21:11:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 21:11:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:11:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:11:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 21:11:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:11:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 21:11:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:11:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:11:45,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:11:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:11:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:11:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:11:45,377 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:11:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:11:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:11:45,378 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:11:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:11:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:11:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:45,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:45,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:11:45,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:11:45,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:11:45,381 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:11:45,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:11:45,382 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:11:45,382 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:11:45,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:11:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:11:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:11:45,383 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:11:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:11:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:11:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:11:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:11:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:11:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:11:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:11:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:11:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:11:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:11:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:11:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:11:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:11:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:11:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:11:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:11:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:11:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:11:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:11:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:11:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:11:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:11:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:11:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:11:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:11:45,389 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:11:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:11:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:11:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:11:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:11:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:11:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:11:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:11:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:11:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:11:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:11:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:11:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:11:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:11:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:11:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:11:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:11:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:11:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:11:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:11:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:11:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:11:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:11:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:11:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:11:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:11:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:11:45,397 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:11:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:11:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:11:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 21:11:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 21:11:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:11:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:11:45,403 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 21:11:45,404 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 21:11:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:11:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:11:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 21:11:45,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 21:11:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-13 21:11:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 21:11:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:11:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:11:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:11:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:11:45,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:11:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:11:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:11:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:11:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:11:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:11:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:11:45,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:11:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:11:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:11:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:11:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:11:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:11:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:11:45,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:11:45,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:11:48,140 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:11:48,140 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:11:48,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:48 BoogieIcfgContainer [2019-10-13 21:11:48,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:11:48,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:11:48,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:11:48,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:11:48,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:11:43" (1/3) ... [2019-10-13 21:11:48,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad60f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:48, skipping insertion in model container [2019-10-13 21:11:48,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:11:45" (2/3) ... [2019-10-13 21:11:48,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad60f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:48, skipping insertion in model container [2019-10-13 21:11:48,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:48" (3/3) ... [2019-10-13 21:11:48,152 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2019-10-13 21:11:48,163 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:11:48,174 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:11:48,186 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:11:48,224 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:11:48,224 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:11:48,224 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:11:48,224 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:11:48,224 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:11:48,225 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:11:48,225 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:11:48,225 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:11:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2019-10-13 21:11:48,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 21:11:48,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:48,308 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:48,313 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:48,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:48,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1561812380, now seen corresponding path program 1 times [2019-10-13 21:11:48,330 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:48,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691141508] [2019-10-13 21:11:48,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:48,331 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:48,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:49,137 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691141508] [2019-10-13 21:11:49,138 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:49,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:49,139 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204045311] [2019-10-13 21:11:49,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:49,147 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:49,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:49,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:49,166 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 7 states. [2019-10-13 21:11:49,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:49,562 INFO L93 Difference]: Finished difference Result 1345 states and 2150 transitions. [2019-10-13 21:11:49,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:49,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-13 21:11:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:49,597 INFO L225 Difference]: With dead ends: 1345 [2019-10-13 21:11:49,598 INFO L226 Difference]: Without dead ends: 681 [2019-10-13 21:11:49,612 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2019-10-13 21:11:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 679. [2019-10-13 21:11:49,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2019-10-13 21:11:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1070 transitions. [2019-10-13 21:11:49,792 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1070 transitions. Word has length 93 [2019-10-13 21:11:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:49,793 INFO L462 AbstractCegarLoop]: Abstraction has 679 states and 1070 transitions. [2019-10-13 21:11:49,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1070 transitions. [2019-10-13 21:11:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:11:49,799 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:49,799 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:49,799 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:49,800 INFO L82 PathProgramCache]: Analyzing trace with hash 46311185, now seen corresponding path program 1 times [2019-10-13 21:11:49,800 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:49,800 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651763400] [2019-10-13 21:11:49,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:49,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:49,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:50,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651763400] [2019-10-13 21:11:50,091 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:50,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:50,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443864848] [2019-10-13 21:11:50,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:50,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:50,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:50,095 INFO L87 Difference]: Start difference. First operand 679 states and 1070 transitions. Second operand 4 states. [2019-10-13 21:11:50,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:50,203 INFO L93 Difference]: Finished difference Result 1324 states and 2105 transitions. [2019-10-13 21:11:50,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:50,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-13 21:11:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:50,217 INFO L225 Difference]: With dead ends: 1324 [2019-10-13 21:11:50,217 INFO L226 Difference]: Without dead ends: 661 [2019-10-13 21:11:50,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2019-10-13 21:11:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2019-10-13 21:11:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2019-10-13 21:11:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1037 transitions. [2019-10-13 21:11:50,276 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1037 transitions. Word has length 94 [2019-10-13 21:11:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:50,278 INFO L462 AbstractCegarLoop]: Abstraction has 661 states and 1037 transitions. [2019-10-13 21:11:50,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1037 transitions. [2019-10-13 21:11:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:11:50,283 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:50,284 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:50,284 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:50,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1318948269, now seen corresponding path program 1 times [2019-10-13 21:11:50,285 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:50,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023249695] [2019-10-13 21:11:50,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:50,285 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:50,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:50,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023249695] [2019-10-13 21:11:50,505 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:50,505 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:50,506 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541219177] [2019-10-13 21:11:50,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:50,509 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:50,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:50,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:50,510 INFO L87 Difference]: Start difference. First operand 661 states and 1037 transitions. Second operand 7 states. [2019-10-13 21:11:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:50,632 INFO L93 Difference]: Finished difference Result 1293 states and 2047 transitions. [2019-10-13 21:11:50,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:50,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-10-13 21:11:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:50,640 INFO L225 Difference]: With dead ends: 1293 [2019-10-13 21:11:50,640 INFO L226 Difference]: Without dead ends: 655 [2019-10-13 21:11:50,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2019-10-13 21:11:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2019-10-13 21:11:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-10-13 21:11:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1024 transitions. [2019-10-13 21:11:50,676 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1024 transitions. Word has length 94 [2019-10-13 21:11:50,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:50,677 INFO L462 AbstractCegarLoop]: Abstraction has 655 states and 1024 transitions. [2019-10-13 21:11:50,677 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1024 transitions. [2019-10-13 21:11:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:11:50,684 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:50,684 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:50,684 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:50,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1711940512, now seen corresponding path program 1 times [2019-10-13 21:11:50,685 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:50,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34983749] [2019-10-13 21:11:50,685 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:50,686 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:50,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:50,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34983749] [2019-10-13 21:11:50,985 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:50,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:50,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260891910] [2019-10-13 21:11:50,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:50,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:50,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:50,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:50,987 INFO L87 Difference]: Start difference. First operand 655 states and 1024 transitions. Second operand 7 states. [2019-10-13 21:11:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:51,120 INFO L93 Difference]: Finished difference Result 1281 states and 2021 transitions. [2019-10-13 21:11:51,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:51,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-13 21:11:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:51,138 INFO L225 Difference]: With dead ends: 1281 [2019-10-13 21:11:51,138 INFO L226 Difference]: Without dead ends: 649 [2019-10-13 21:11:51,145 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-10-13 21:11:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2019-10-13 21:11:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-10-13 21:11:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1011 transitions. [2019-10-13 21:11:51,171 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1011 transitions. Word has length 95 [2019-10-13 21:11:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:51,172 INFO L462 AbstractCegarLoop]: Abstraction has 649 states and 1011 transitions. [2019-10-13 21:11:51,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1011 transitions. [2019-10-13 21:11:51,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:11:51,175 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:51,175 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:51,175 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:51,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:51,175 INFO L82 PathProgramCache]: Analyzing trace with hash -974599401, now seen corresponding path program 1 times [2019-10-13 21:11:51,176 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:51,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789164355] [2019-10-13 21:11:51,176 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:51,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789164355] [2019-10-13 21:11:51,363 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:51,363 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:51,364 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352993893] [2019-10-13 21:11:51,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:51,365 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:51,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:51,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:51,366 INFO L87 Difference]: Start difference. First operand 649 states and 1011 transitions. Second operand 7 states. [2019-10-13 21:11:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:51,475 INFO L93 Difference]: Finished difference Result 1269 states and 1995 transitions. [2019-10-13 21:11:51,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:51,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:11:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:51,482 INFO L225 Difference]: With dead ends: 1269 [2019-10-13 21:11:51,482 INFO L226 Difference]: Without dead ends: 643 [2019-10-13 21:11:51,485 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-13 21:11:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-13 21:11:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-13 21:11:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 998 transitions. [2019-10-13 21:11:51,508 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 998 transitions. Word has length 96 [2019-10-13 21:11:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:51,509 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 998 transitions. [2019-10-13 21:11:51,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 998 transitions. [2019-10-13 21:11:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:11:51,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:51,511 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:51,511 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:51,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:51,512 INFO L82 PathProgramCache]: Analyzing trace with hash 414342424, now seen corresponding path program 1 times [2019-10-13 21:11:51,512 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:51,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35019274] [2019-10-13 21:11:51,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:51,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35019274] [2019-10-13 21:11:51,662 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:51,663 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:51,663 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069887667] [2019-10-13 21:11:51,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:51,664 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:51,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:51,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:51,664 INFO L87 Difference]: Start difference. First operand 643 states and 998 transitions. Second operand 7 states. [2019-10-13 21:11:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:51,812 INFO L93 Difference]: Finished difference Result 1257 states and 1969 transitions. [2019-10-13 21:11:51,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:51,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-10-13 21:11:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:51,818 INFO L225 Difference]: With dead ends: 1257 [2019-10-13 21:11:51,819 INFO L226 Difference]: Without dead ends: 643 [2019-10-13 21:11:51,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:51,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-13 21:11:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-13 21:11:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-13 21:11:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 997 transitions. [2019-10-13 21:11:51,844 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 997 transitions. Word has length 96 [2019-10-13 21:11:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:51,845 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 997 transitions. [2019-10-13 21:11:51,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 997 transitions. [2019-10-13 21:11:51,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:11:51,847 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:51,847 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:51,847 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:51,848 INFO L82 PathProgramCache]: Analyzing trace with hash -512802396, now seen corresponding path program 1 times [2019-10-13 21:11:51,848 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:51,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760860257] [2019-10-13 21:11:51,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:51,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:51,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760860257] [2019-10-13 21:11:51,976 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:51,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:51,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130217449] [2019-10-13 21:11:51,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:51,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:51,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:51,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:51,977 INFO L87 Difference]: Start difference. First operand 643 states and 997 transitions. Second operand 5 states. [2019-10-13 21:11:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:52,059 INFO L93 Difference]: Finished difference Result 1256 states and 1966 transitions. [2019-10-13 21:11:52,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:52,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-13 21:11:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:52,067 INFO L225 Difference]: With dead ends: 1256 [2019-10-13 21:11:52,067 INFO L226 Difference]: Without dead ends: 643 [2019-10-13 21:11:52,071 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:52,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-13 21:11:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-13 21:11:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-13 21:11:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 996 transitions. [2019-10-13 21:11:52,099 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 996 transitions. Word has length 97 [2019-10-13 21:11:52,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:52,100 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 996 transitions. [2019-10-13 21:11:52,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 996 transitions. [2019-10-13 21:11:52,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 21:11:52,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:52,105 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:52,105 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:52,105 INFO L82 PathProgramCache]: Analyzing trace with hash -288681029, now seen corresponding path program 1 times [2019-10-13 21:11:52,106 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:52,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833535682] [2019-10-13 21:11:52,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:52,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833535682] [2019-10-13 21:11:52,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:52,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:52,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458952485] [2019-10-13 21:11:52,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:52,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:52,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:52,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:52,264 INFO L87 Difference]: Start difference. First operand 643 states and 996 transitions. Second operand 5 states. [2019-10-13 21:11:52,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:52,344 INFO L93 Difference]: Finished difference Result 1256 states and 1964 transitions. [2019-10-13 21:11:52,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:52,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-10-13 21:11:52,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:52,350 INFO L225 Difference]: With dead ends: 1256 [2019-10-13 21:11:52,350 INFO L226 Difference]: Without dead ends: 643 [2019-10-13 21:11:52,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-13 21:11:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-13 21:11:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-13 21:11:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 995 transitions. [2019-10-13 21:11:52,385 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 995 transitions. Word has length 98 [2019-10-13 21:11:52,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:52,386 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 995 transitions. [2019-10-13 21:11:52,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 995 transitions. [2019-10-13 21:11:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:11:52,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:52,389 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:52,390 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:52,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1377915425, now seen corresponding path program 1 times [2019-10-13 21:11:52,390 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:52,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762352975] [2019-10-13 21:11:52,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:52,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762352975] [2019-10-13 21:11:52,583 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:52,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:52,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130244390] [2019-10-13 21:11:52,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:52,584 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:52,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:52,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:52,585 INFO L87 Difference]: Start difference. First operand 643 states and 995 transitions. Second operand 5 states. [2019-10-13 21:11:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:52,668 INFO L93 Difference]: Finished difference Result 1256 states and 1962 transitions. [2019-10-13 21:11:52,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:52,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-10-13 21:11:52,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:52,674 INFO L225 Difference]: With dead ends: 1256 [2019-10-13 21:11:52,674 INFO L226 Difference]: Without dead ends: 643 [2019-10-13 21:11:52,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-13 21:11:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-13 21:11:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-13 21:11:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 994 transitions. [2019-10-13 21:11:52,702 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 994 transitions. Word has length 99 [2019-10-13 21:11:52,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:52,702 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 994 transitions. [2019-10-13 21:11:52,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 994 transitions. [2019-10-13 21:11:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 21:11:52,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:52,704 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:52,705 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:52,705 INFO L82 PathProgramCache]: Analyzing trace with hash -231505514, now seen corresponding path program 1 times [2019-10-13 21:11:52,705 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:52,706 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462834312] [2019-10-13 21:11:52,706 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,706 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:52,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462834312] [2019-10-13 21:11:52,827 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:52,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:52,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790791564] [2019-10-13 21:11:52,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:52,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:52,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:52,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:52,829 INFO L87 Difference]: Start difference. First operand 643 states and 994 transitions. Second operand 5 states. [2019-10-13 21:11:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:52,926 INFO L93 Difference]: Finished difference Result 1256 states and 1960 transitions. [2019-10-13 21:11:52,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:11:52,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-10-13 21:11:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:52,935 INFO L225 Difference]: With dead ends: 1256 [2019-10-13 21:11:52,935 INFO L226 Difference]: Without dead ends: 643 [2019-10-13 21:11:52,947 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:52,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-13 21:11:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2019-10-13 21:11:52,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-10-13 21:11:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 993 transitions. [2019-10-13 21:11:52,992 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 993 transitions. Word has length 100 [2019-10-13 21:11:52,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:52,993 INFO L462 AbstractCegarLoop]: Abstraction has 643 states and 993 transitions. [2019-10-13 21:11:52,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:52,993 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 993 transitions. [2019-10-13 21:11:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:11:52,995 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:52,995 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:52,996 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:52,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1500401178, now seen corresponding path program 1 times [2019-10-13 21:11:52,996 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:52,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078864547] [2019-10-13 21:11:52,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,997 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:52,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:53,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078864547] [2019-10-13 21:11:53,335 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:53,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:11:53,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857328163] [2019-10-13 21:11:53,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:11:53,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:53,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:11:53,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:53,338 INFO L87 Difference]: Start difference. First operand 643 states and 993 transitions. Second operand 8 states. [2019-10-13 21:11:57,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:57,769 INFO L93 Difference]: Finished difference Result 2359 states and 3709 transitions. [2019-10-13 21:11:57,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 21:11:57,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2019-10-13 21:11:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:57,784 INFO L225 Difference]: With dead ends: 2359 [2019-10-13 21:11:57,784 INFO L226 Difference]: Without dead ends: 1750 [2019-10-13 21:11:57,789 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:11:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-10-13 21:11:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1738. [2019-10-13 21:11:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2019-10-13 21:11:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2690 transitions. [2019-10-13 21:11:57,858 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2690 transitions. Word has length 101 [2019-10-13 21:11:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:57,858 INFO L462 AbstractCegarLoop]: Abstraction has 1738 states and 2690 transitions. [2019-10-13 21:11:57,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:11:57,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2690 transitions. [2019-10-13 21:11:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:11:57,860 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:57,860 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:57,861 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:57,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2018217190, now seen corresponding path program 1 times [2019-10-13 21:11:57,861 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:57,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560100855] [2019-10-13 21:11:57,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:57,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:57,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:58,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560100855] [2019-10-13 21:11:58,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729151527] [2019-10-13 21:11:58,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:58,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:11:58,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:58,906 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:59,049 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:11:59,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:11:59,050 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776702692] [2019-10-13 21:11:59,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:11:59,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:59,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:11:59,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:59,051 INFO L87 Difference]: Start difference. First operand 1738 states and 2690 transitions. Second operand 3 states. [2019-10-13 21:11:59,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:59,246 INFO L93 Difference]: Finished difference Result 5027 states and 7906 transitions. [2019-10-13 21:11:59,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:11:59,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-10-13 21:11:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:59,274 INFO L225 Difference]: With dead ends: 5027 [2019-10-13 21:11:59,274 INFO L226 Difference]: Without dead ends: 3323 [2019-10-13 21:11:59,286 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:59,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2019-10-13 21:11:59,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3217. [2019-10-13 21:11:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3217 states. [2019-10-13 21:11:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 5030 transitions. [2019-10-13 21:11:59,502 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 5030 transitions. Word has length 101 [2019-10-13 21:11:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:59,503 INFO L462 AbstractCegarLoop]: Abstraction has 3217 states and 5030 transitions. [2019-10-13 21:11:59,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:11:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 5030 transitions. [2019-10-13 21:11:59,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 21:11:59,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:59,506 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:59,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:59,727 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:59,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1406996872, now seen corresponding path program 1 times [2019-10-13 21:11:59,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:59,728 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079432825] [2019-10-13 21:11:59,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:59,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:59,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:11:59,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079432825] [2019-10-13 21:11:59,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249434363] [2019-10-13 21:11:59,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:00,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 21:12:00,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:12:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:00,773 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:12:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:00,892 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:12:00,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-13 21:12:00,893 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623605329] [2019-10-13 21:12:00,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:12:00,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:00,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:12:00,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:00,895 INFO L87 Difference]: Start difference. First operand 3217 states and 5030 transitions. Second operand 3 states. [2019-10-13 21:12:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:01,078 INFO L93 Difference]: Finished difference Result 7059 states and 11108 transitions. [2019-10-13 21:12:01,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:12:01,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-10-13 21:12:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:01,112 INFO L225 Difference]: With dead ends: 7059 [2019-10-13 21:12:01,113 INFO L226 Difference]: Without dead ends: 3876 [2019-10-13 21:12:01,134 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2019-10-13 21:12:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 3782. [2019-10-13 21:12:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3782 states. [2019-10-13 21:12:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5918 transitions. [2019-10-13 21:12:01,304 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5918 transitions. Word has length 102 [2019-10-13 21:12:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:01,304 INFO L462 AbstractCegarLoop]: Abstraction has 3782 states and 5918 transitions. [2019-10-13 21:12:01,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:12:01,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5918 transitions. [2019-10-13 21:12:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 21:12:01,306 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:01,306 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:01,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:12:01,514 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:01,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2076925205, now seen corresponding path program 1 times [2019-10-13 21:12:01,515 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:01,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89236146] [2019-10-13 21:12:01,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:01,515 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:01,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:01,731 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89236146] [2019-10-13 21:12:01,731 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:01,731 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:01,731 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435274785] [2019-10-13 21:12:01,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:01,735 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:01,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:01,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:01,735 INFO L87 Difference]: Start difference. First operand 3782 states and 5918 transitions. Second operand 7 states. [2019-10-13 21:12:05,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:05,334 INFO L93 Difference]: Finished difference Result 11194 states and 17952 transitions. [2019-10-13 21:12:05,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:05,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-10-13 21:12:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:05,398 INFO L225 Difference]: With dead ends: 11194 [2019-10-13 21:12:05,398 INFO L226 Difference]: Without dead ends: 7446 [2019-10-13 21:12:05,423 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:05,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7446 states. [2019-10-13 21:12:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7446 to 7358. [2019-10-13 21:12:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7358 states. [2019-10-13 21:12:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7358 states to 7358 states and 11623 transitions. [2019-10-13 21:12:05,815 INFO L78 Accepts]: Start accepts. Automaton has 7358 states and 11623 transitions. Word has length 104 [2019-10-13 21:12:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:05,816 INFO L462 AbstractCegarLoop]: Abstraction has 7358 states and 11623 transitions. [2019-10-13 21:12:05,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:05,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7358 states and 11623 transitions. [2019-10-13 21:12:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 21:12:05,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:05,818 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:05,818 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:05,819 INFO L82 PathProgramCache]: Analyzing trace with hash -921011962, now seen corresponding path program 1 times [2019-10-13 21:12:05,820 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:05,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71348206] [2019-10-13 21:12:05,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:05,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:05,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:12:05,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71348206] [2019-10-13 21:12:05,943 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:05,943 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:05,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040635716] [2019-10-13 21:12:05,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:05,949 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:05,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:05,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:05,950 INFO L87 Difference]: Start difference. First operand 7358 states and 11623 transitions. Second operand 4 states. [2019-10-13 21:12:06,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:06,277 INFO L93 Difference]: Finished difference Result 14674 states and 23394 transitions. [2019-10-13 21:12:06,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:06,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-10-13 21:12:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:06,377 INFO L225 Difference]: With dead ends: 14674 [2019-10-13 21:12:06,377 INFO L226 Difference]: Without dead ends: 7350 [2019-10-13 21:12:06,415 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:06,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2019-10-13 21:12:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7328. [2019-10-13 21:12:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7328 states. [2019-10-13 21:12:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 11535 transitions. [2019-10-13 21:12:06,892 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 11535 transitions. Word has length 105 [2019-10-13 21:12:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:06,893 INFO L462 AbstractCegarLoop]: Abstraction has 7328 states and 11535 transitions. [2019-10-13 21:12:06,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 11535 transitions. [2019-10-13 21:12:06,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 21:12:06,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:06,896 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:06,897 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:06,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1506393718, now seen corresponding path program 1 times [2019-10-13 21:12:06,897 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:06,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346739500] [2019-10-13 21:12:06,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:06,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:06,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 21:12:07,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346739500] [2019-10-13 21:12:07,077 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:07,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:07,078 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505638286] [2019-10-13 21:12:07,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:07,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:07,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:07,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:07,079 INFO L87 Difference]: Start difference. First operand 7328 states and 11535 transitions. Second operand 7 states. [2019-10-13 21:12:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:11,075 INFO L93 Difference]: Finished difference Result 21917 states and 35480 transitions. [2019-10-13 21:12:11,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:11,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 21:12:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:11,172 INFO L225 Difference]: With dead ends: 21917 [2019-10-13 21:12:11,173 INFO L226 Difference]: Without dead ends: 14623 [2019-10-13 21:12:11,203 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:12:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14623 states. [2019-10-13 21:12:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14623 to 14495. [2019-10-13 21:12:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14495 states. [2019-10-13 21:12:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14495 states to 14495 states and 23191 transitions. [2019-10-13 21:12:12,889 INFO L78 Accepts]: Start accepts. Automaton has 14495 states and 23191 transitions. Word has length 113 [2019-10-13 21:12:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:12,891 INFO L462 AbstractCegarLoop]: Abstraction has 14495 states and 23191 transitions. [2019-10-13 21:12:12,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 14495 states and 23191 transitions. [2019-10-13 21:12:12,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-13 21:12:12,893 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:12,893 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:12,893 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:12,894 INFO L82 PathProgramCache]: Analyzing trace with hash -105867251, now seen corresponding path program 1 times [2019-10-13 21:12:12,894 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:12,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379020065] [2019-10-13 21:12:12,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:12,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 21:12:13,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379020065] [2019-10-13 21:12:13,013 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:13,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:13,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035805334] [2019-10-13 21:12:13,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:13,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:13,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:13,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:13,015 INFO L87 Difference]: Start difference. First operand 14495 states and 23191 transitions. Second operand 4 states. [2019-10-13 21:12:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:13,569 INFO L93 Difference]: Finished difference Result 29018 states and 46913 transitions. [2019-10-13 21:12:13,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:12:13,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-10-13 21:12:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:13,684 INFO L225 Difference]: With dead ends: 29018 [2019-10-13 21:12:13,684 INFO L226 Difference]: Without dead ends: 14551 [2019-10-13 21:12:13,740 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:13,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14551 states.