/usr/bin/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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:43:41,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:43:41,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:43:41,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:43:41,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:43:41,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:43:41,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:43:41,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:43:41,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:43:41,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:43:41,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:43:41,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:43:41,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:43:41,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:43:41,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:43:41,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:43:41,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:43:41,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:43:41,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:43:41,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:43:41,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:43:41,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:43:41,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:43:41,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:43:41,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:43:41,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:43:41,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:43:41,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:43:41,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:43:41,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:43:41,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:43:41,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:43:41,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:43:41,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:43:41,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:43:41,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:43:41,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:43:41,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:43:41,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:43:41,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:43:41,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:43:41,678 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 [2019-11-07 00:43:41,712 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:43:41,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:43:41,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:43:41,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:43:41,715 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:43:41,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:43:41,718 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:43:41,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:43:41,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:43:41,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:43:41,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:43:41,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:43:41,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:43:41,719 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:43:41,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:43:41,719 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:43:41,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:43:41,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:43:41,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:43:41,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:43:41,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:43:41,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:43:41,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:43:41,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:43:41,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:43:41,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:43:41,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:43:41,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:43:41,726 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 [2019-11-07 00:43:41,996 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:43:42,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:43:42,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:43:42,016 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:43:42,016 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:43:42,017 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2019-11-07 00:43:42,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a738e33/714aa35437a04e87833bc04d5f2ff98d/FLAGd5081a304 [2019-11-07 00:43:42,756 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:43:42,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c [2019-11-07 00:43:42,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a738e33/714aa35437a04e87833bc04d5f2ff98d/FLAGd5081a304 [2019-11-07 00:43:42,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a738e33/714aa35437a04e87833bc04d5f2ff98d [2019-11-07 00:43:42,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:43:42,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:43:42,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:42,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:43:42,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:43:42,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:42" (1/1) ... [2019-11-07 00:43:42,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22019d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:42, skipping insertion in model container [2019-11-07 00:43:42,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:43:42" (1/1) ... [2019-11-07 00:43:42,974 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:43:43,055 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:43:43,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:43,939 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:43:44,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:43:44,104 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:43:44,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44 WrapperNode [2019-11-07 00:43:44,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:43:44,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:43:44,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:43:44,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:43:44,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44" (1/1) ... [2019-11-07 00:43:44,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44" (1/1) ... [2019-11-07 00:43:44,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44" (1/1) ... [2019-11-07 00:43:44,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44" (1/1) ... [2019-11-07 00:43:44,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44" (1/1) ... [2019-11-07 00:43:44,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44" (1/1) ... [2019-11-07 00:43:44,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44" (1/1) ... [2019-11-07 00:43:44,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:43:44,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:43:44,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:43:44,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:43:44,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44" (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 [2019-11-07 00:43:44,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:43:44,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:43:44,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:44,404 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:43:44,405 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:43:44,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:43:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:44,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:44,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:43:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:43:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:43:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:43:44,409 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:43:44,409 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:43:44,410 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:43:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:43:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:43:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:43:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:43:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:43:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:43:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:43:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:43:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:43:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:43:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:43:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:43:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:43:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:43:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:43:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:43:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:43:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:43:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:43:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:43:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:43:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:43:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:43:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:43:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:43:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:43:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:43:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:43:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:43:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:43:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:43:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:43:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:43:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:43:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:43:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:43:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:43:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:43:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:43:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:43:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:43:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:43:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:43:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:43:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:43:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:43:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:43:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:43:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:43:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:43:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:43:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:43:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:43:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:43:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-11-07 00:43:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:43:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-11-07 00:43:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:43:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:43:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:43:44,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:43:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:43:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:43:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:43:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:43:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:43:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:43:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:43:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:43:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:43:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:43:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:43:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:43:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:43:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:43:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:43:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:43:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:43:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:43:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:43:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:43:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:43:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:43:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:43:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:43:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:43:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:43:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:43:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:43:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:43:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:43:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:43:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:43:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:43:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:43:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-07 00:43:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-11-07 00:43:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:43:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:43:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:43:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:43:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:43:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:43:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:43:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:43:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:43:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:43:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:43:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:43:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:43:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:43:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:43:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:43:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:43:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:43:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:43:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:43:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:43:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:43:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:43:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:43:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:43:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:43:44,446 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:43:44,446 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:43:44,446 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:43:44,447 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:43:44,454 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:43:44,454 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:43:44,454 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:43:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:43:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:43:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:43:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:43:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:43:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:43:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:43:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:43:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:43:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:43:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:43:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:43:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:43:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:43:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-11-07 00:43:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-11-07 00:43:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:43:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:43:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:43:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:43:46,745 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:43:46,745 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:43:46,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:46 BoogieIcfgContainer [2019-11-07 00:43:46,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:43:46,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:43:46,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:43:46,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:43:46,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:43:42" (1/3) ... [2019-11-07 00:43:46,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71db921f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:46, skipping insertion in model container [2019-11-07 00:43:46,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:43:44" (2/3) ... [2019-11-07 00:43:46,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71db921f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:46, skipping insertion in model container [2019-11-07 00:43:46,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:46" (3/3) ... [2019-11-07 00:43:46,756 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2019-11-07 00:43:46,766 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:43:46,775 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:43:46,788 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:43:46,831 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:43:46,831 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:43:46,831 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:43:46,831 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:43:46,831 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:43:46,832 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:43:46,832 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:43:46,832 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:43:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states. [2019-11-07 00:43:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 00:43:46,931 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:46,932 INFO L410 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] [2019-11-07 00:43:46,935 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:46,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1780237072, now seen corresponding path program 1 times [2019-11-07 00:43:46,953 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:46,954 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825648072] [2019-11-07 00:43:46,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:47,654 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825648072] [2019-11-07 00:43:47,655 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:47,655 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:47,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804029971] [2019-11-07 00:43:47,663 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:47,666 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:47,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:47,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:47,684 INFO L87 Difference]: Start difference. First operand 812 states. Second operand 7 states. [2019-11-07 00:43:48,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:48,047 INFO L93 Difference]: Finished difference Result 1289 states and 2078 transitions. [2019-11-07 00:43:48,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:48,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-11-07 00:43:48,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:48,094 INFO L225 Difference]: With dead ends: 1289 [2019-11-07 00:43:48,094 INFO L226 Difference]: Without dead ends: 653 [2019-11-07 00:43:48,105 INFO L630 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 [2019-11-07 00:43:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2019-11-07 00:43:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 651. [2019-11-07 00:43:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-11-07 00:43:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1034 transitions. [2019-11-07 00:43:48,243 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1034 transitions. Word has length 93 [2019-11-07 00:43:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:48,244 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1034 transitions. [2019-11-07 00:43:48,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1034 transitions. [2019-11-07 00:43:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:43:48,251 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:48,251 INFO L410 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] [2019-11-07 00:43:48,252 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:48,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1958663701, now seen corresponding path program 1 times [2019-11-07 00:43:48,253 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:48,253 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613354793] [2019-11-07 00:43:48,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:48,518 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613354793] [2019-11-07 00:43:48,518 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:48,519 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:43:48,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504756735] [2019-11-07 00:43:48,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:43:48,523 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:48,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:43:48,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:43:48,524 INFO L87 Difference]: Start difference. First operand 651 states and 1034 transitions. Second operand 4 states. [2019-11-07 00:43:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:48,613 INFO L93 Difference]: Finished difference Result 1268 states and 2033 transitions. [2019-11-07 00:43:48,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:43:48,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-11-07 00:43:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:48,621 INFO L225 Difference]: With dead ends: 1268 [2019-11-07 00:43:48,622 INFO L226 Difference]: Without dead ends: 633 [2019-11-07 00:43:48,626 INFO L630 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 [2019-11-07 00:43:48,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-11-07 00:43:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2019-11-07 00:43:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-11-07 00:43:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1001 transitions. [2019-11-07 00:43:48,686 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1001 transitions. Word has length 94 [2019-11-07 00:43:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:48,687 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 1001 transitions. [2019-11-07 00:43:48,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:43:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1001 transitions. [2019-11-07 00:43:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:43:48,692 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:48,692 INFO L410 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] [2019-11-07 00:43:48,692 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1392133917, now seen corresponding path program 1 times [2019-11-07 00:43:48,693 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:48,693 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751909182] [2019-11-07 00:43:48,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:48,905 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751909182] [2019-11-07 00:43:48,905 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:48,906 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:48,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407124008] [2019-11-07 00:43:48,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:48,909 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:48,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:48,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:48,910 INFO L87 Difference]: Start difference. First operand 633 states and 1001 transitions. Second operand 7 states. [2019-11-07 00:43:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:49,040 INFO L93 Difference]: Finished difference Result 1237 states and 1975 transitions. [2019-11-07 00:43:49,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:49,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2019-11-07 00:43:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:49,049 INFO L225 Difference]: With dead ends: 1237 [2019-11-07 00:43:49,049 INFO L226 Difference]: Without dead ends: 627 [2019-11-07 00:43:49,053 INFO L630 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 [2019-11-07 00:43:49,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2019-11-07 00:43:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2019-11-07 00:43:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2019-11-07 00:43:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 988 transitions. [2019-11-07 00:43:49,092 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 988 transitions. Word has length 94 [2019-11-07 00:43:49,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:49,093 INFO L462 AbstractCegarLoop]: Abstraction has 627 states and 988 transitions. [2019-11-07 00:43:49,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 988 transitions. [2019-11-07 00:43:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:43:49,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:49,098 INFO L410 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] [2019-11-07 00:43:49,099 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:49,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:49,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1203424844, now seen corresponding path program 1 times [2019-11-07 00:43:49,099 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:49,100 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357193468] [2019-11-07 00:43:49,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:49,380 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357193468] [2019-11-07 00:43:49,380 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:49,380 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:49,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173117985] [2019-11-07 00:43:49,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:49,381 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:49,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:49,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:49,383 INFO L87 Difference]: Start difference. First operand 627 states and 988 transitions. Second operand 7 states. [2019-11-07 00:43:49,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:49,488 INFO L93 Difference]: Finished difference Result 1225 states and 1949 transitions. [2019-11-07 00:43:49,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:49,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-11-07 00:43:49,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:49,494 INFO L225 Difference]: With dead ends: 1225 [2019-11-07 00:43:49,495 INFO L226 Difference]: Without dead ends: 621 [2019-11-07 00:43:49,498 INFO L630 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 [2019-11-07 00:43:49,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-11-07 00:43:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2019-11-07 00:43:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-11-07 00:43:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 975 transitions. [2019-11-07 00:43:49,525 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 975 transitions. Word has length 95 [2019-11-07 00:43:49,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:49,525 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 975 transitions. [2019-11-07 00:43:49,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 975 transitions. [2019-11-07 00:43:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:43:49,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:49,534 INFO L410 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] [2019-11-07 00:43:49,534 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:49,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2078787873, now seen corresponding path program 1 times [2019-11-07 00:43:49,534 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:49,535 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308613360] [2019-11-07 00:43:49,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:49,710 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308613360] [2019-11-07 00:43:49,711 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:49,711 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:49,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297278172] [2019-11-07 00:43:49,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:49,713 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:49,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:49,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:49,714 INFO L87 Difference]: Start difference. First operand 621 states and 975 transitions. Second operand 7 states. [2019-11-07 00:43:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:49,816 INFO L93 Difference]: Finished difference Result 1213 states and 1923 transitions. [2019-11-07 00:43:49,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:49,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-11-07 00:43:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:49,826 INFO L225 Difference]: With dead ends: 1213 [2019-11-07 00:43:49,826 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:43:49,829 INFO L630 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 [2019-11-07 00:43:49,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:43:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-11-07 00:43:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-11-07 00:43:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 962 transitions. [2019-11-07 00:43:49,855 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 962 transitions. Word has length 96 [2019-11-07 00:43:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:49,856 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 962 transitions. [2019-11-07 00:43:49,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 962 transitions. [2019-11-07 00:43:49,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:43:49,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:49,859 INFO L410 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] [2019-11-07 00:43:49,860 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:49,860 INFO L82 PathProgramCache]: Analyzing trace with hash -827237598, now seen corresponding path program 1 times [2019-11-07 00:43:49,860 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:49,861 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384242964] [2019-11-07 00:43:49,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:50,079 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384242964] [2019-11-07 00:43:50,080 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:50,081 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:50,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719870965] [2019-11-07 00:43:50,082 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:50,083 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:50,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:50,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:50,083 INFO L87 Difference]: Start difference. First operand 615 states and 962 transitions. Second operand 7 states. [2019-11-07 00:43:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:50,199 INFO L93 Difference]: Finished difference Result 1201 states and 1897 transitions. [2019-11-07 00:43:50,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:43:50,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2019-11-07 00:43:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:50,210 INFO L225 Difference]: With dead ends: 1201 [2019-11-07 00:43:50,211 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:43:50,216 INFO L630 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 [2019-11-07 00:43:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:43:50,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-11-07 00:43:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-11-07 00:43:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 961 transitions. [2019-11-07 00:43:50,253 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 961 transitions. Word has length 96 [2019-11-07 00:43:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:50,253 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 961 transitions. [2019-11-07 00:43:50,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 961 transitions. [2019-11-07 00:43:50,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:43:50,259 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:50,259 INFO L410 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] [2019-11-07 00:43:50,259 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:50,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1406644616, now seen corresponding path program 1 times [2019-11-07 00:43:50,260 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:50,261 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264210420] [2019-11-07 00:43:50,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:50,464 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264210420] [2019-11-07 00:43:50,465 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:50,465 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:50,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187378764] [2019-11-07 00:43:50,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:50,466 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:50,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:50,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:50,467 INFO L87 Difference]: Start difference. First operand 615 states and 961 transitions. Second operand 5 states. [2019-11-07 00:43:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:50,577 INFO L93 Difference]: Finished difference Result 1200 states and 1894 transitions. [2019-11-07 00:43:50,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:50,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-11-07 00:43:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:50,584 INFO L225 Difference]: With dead ends: 1200 [2019-11-07 00:43:50,585 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:43:50,589 INFO L630 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 [2019-11-07 00:43:50,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:43:50,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-11-07 00:43:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-11-07 00:43:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 960 transitions. [2019-11-07 00:43:50,616 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 960 transitions. Word has length 97 [2019-11-07 00:43:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:50,617 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 960 transitions. [2019-11-07 00:43:50,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 960 transitions. [2019-11-07 00:43:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 00:43:50,620 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:50,620 INFO L410 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] [2019-11-07 00:43:50,621 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:50,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1540636153, now seen corresponding path program 1 times [2019-11-07 00:43:50,622 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:50,622 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973470906] [2019-11-07 00:43:50,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:50,772 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973470906] [2019-11-07 00:43:50,772 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:50,772 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:50,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743008730] [2019-11-07 00:43:50,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:50,773 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:50,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:50,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:50,774 INFO L87 Difference]: Start difference. First operand 615 states and 960 transitions. Second operand 5 states. [2019-11-07 00:43:50,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:50,858 INFO L93 Difference]: Finished difference Result 1200 states and 1892 transitions. [2019-11-07 00:43:50,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:50,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2019-11-07 00:43:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:50,865 INFO L225 Difference]: With dead ends: 1200 [2019-11-07 00:43:50,865 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:43:50,869 INFO L630 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 [2019-11-07 00:43:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:43:51,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-11-07 00:43:51,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-11-07 00:43:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 959 transitions. [2019-11-07 00:43:51,009 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 959 transitions. Word has length 98 [2019-11-07 00:43:51,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:51,009 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 959 transitions. [2019-11-07 00:43:51,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 959 transitions. [2019-11-07 00:43:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 00:43:51,011 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:51,011 INFO L410 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] [2019-11-07 00:43:51,011 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:51,012 INFO L82 PathProgramCache]: Analyzing trace with hash -846468685, now seen corresponding path program 1 times [2019-11-07 00:43:51,012 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:51,012 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532151208] [2019-11-07 00:43:51,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:51,139 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532151208] [2019-11-07 00:43:51,139 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:51,139 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:51,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125964105] [2019-11-07 00:43:51,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:51,140 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:51,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:51,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:51,141 INFO L87 Difference]: Start difference. First operand 615 states and 959 transitions. Second operand 5 states. [2019-11-07 00:43:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:51,233 INFO L93 Difference]: Finished difference Result 1200 states and 1890 transitions. [2019-11-07 00:43:51,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:51,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2019-11-07 00:43:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:51,241 INFO L225 Difference]: With dead ends: 1200 [2019-11-07 00:43:51,241 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:43:51,246 INFO L630 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 [2019-11-07 00:43:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:43:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-11-07 00:43:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-11-07 00:43:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 958 transitions. [2019-11-07 00:43:51,277 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 958 transitions. Word has length 99 [2019-11-07 00:43:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:51,278 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 958 transitions. [2019-11-07 00:43:51,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 958 transitions. [2019-11-07 00:43:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-07 00:43:51,281 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:51,281 INFO L410 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] [2019-11-07 00:43:51,281 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:51,282 INFO L82 PathProgramCache]: Analyzing trace with hash -249175838, now seen corresponding path program 1 times [2019-11-07 00:43:51,282 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:51,283 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774434296] [2019-11-07 00:43:51,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:51,427 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774434296] [2019-11-07 00:43:51,427 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:51,427 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:43:51,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720769128] [2019-11-07 00:43:51,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:43:51,428 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:51,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:43:51,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:43:51,429 INFO L87 Difference]: Start difference. First operand 615 states and 958 transitions. Second operand 5 states. [2019-11-07 00:43:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:51,497 INFO L93 Difference]: Finished difference Result 1200 states and 1888 transitions. [2019-11-07 00:43:51,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:43:51,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-11-07 00:43:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:51,502 INFO L225 Difference]: With dead ends: 1200 [2019-11-07 00:43:51,503 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:43:51,506 INFO L630 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 [2019-11-07 00:43:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:43:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-11-07 00:43:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-11-07 00:43:51,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 957 transitions. [2019-11-07 00:43:51,530 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 957 transitions. Word has length 100 [2019-11-07 00:43:51,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:51,531 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 957 transitions. [2019-11-07 00:43:51,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:43:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 957 transitions. [2019-11-07 00:43:51,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-07 00:43:51,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:51,533 INFO L410 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] [2019-11-07 00:43:51,533 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:51,533 INFO L82 PathProgramCache]: Analyzing trace with hash -715834196, now seen corresponding path program 1 times [2019-11-07 00:43:51,534 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:51,534 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548389019] [2019-11-07 00:43:51,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:51,751 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548389019] [2019-11-07 00:43:51,752 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:51,752 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:43:51,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964103940] [2019-11-07 00:43:51,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:43:51,753 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:51,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:43:51,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:43:51,753 INFO L87 Difference]: Start difference. First operand 615 states and 957 transitions. Second operand 9 states. [2019-11-07 00:43:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:51,892 INFO L93 Difference]: Finished difference Result 1202 states and 1887 transitions. [2019-11-07 00:43:51,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:43:51,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2019-11-07 00:43:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:51,898 INFO L225 Difference]: With dead ends: 1202 [2019-11-07 00:43:51,898 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:43:51,901 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:43:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:43:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-11-07 00:43:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-11-07 00:43:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 956 transitions. [2019-11-07 00:43:51,930 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 956 transitions. Word has length 101 [2019-11-07 00:43:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:51,931 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 956 transitions. [2019-11-07 00:43:51,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:43:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 956 transitions. [2019-11-07 00:43:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-07 00:43:51,933 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:51,933 INFO L410 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] [2019-11-07 00:43:51,934 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:51,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1639971054, now seen corresponding path program 1 times [2019-11-07 00:43:51,934 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:51,934 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839508925] [2019-11-07 00:43:51,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:43:52,128 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839508925] [2019-11-07 00:43:52,128 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320419953] [2019-11-07 00:43:52,128 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 [2019-11-07 00:43:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:52,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:43:52,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:43:52,846 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:52,971 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:52,971 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 00:43:52,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134011325] [2019-11-07 00:43:52,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:43:52,973 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:52,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:43:52,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:52,973 INFO L87 Difference]: Start difference. First operand 615 states and 956 transitions. Second operand 3 states. [2019-11-07 00:43:53,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:53,068 INFO L93 Difference]: Finished difference Result 1724 states and 2728 transitions. [2019-11-07 00:43:53,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:43:53,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2019-11-07 00:43:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:53,080 INFO L225 Difference]: With dead ends: 1724 [2019-11-07 00:43:53,081 INFO L226 Difference]: Without dead ends: 1143 [2019-11-07 00:43:53,085 INFO L630 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 [2019-11-07 00:43:53,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2019-11-07 00:43:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1130. [2019-11-07 00:43:53,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2019-11-07 00:43:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1775 transitions. [2019-11-07 00:43:53,166 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1775 transitions. Word has length 101 [2019-11-07 00:43:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:53,167 INFO L462 AbstractCegarLoop]: Abstraction has 1130 states and 1775 transitions. [2019-11-07 00:43:53,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:43:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1775 transitions. [2019-11-07 00:43:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-11-07 00:43:53,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:53,170 INFO L410 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] [2019-11-07 00:43:53,376 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:53,377 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:53,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1592774854, now seen corresponding path program 1 times [2019-11-07 00:43:53,378 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:53,378 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816645837] [2019-11-07 00:43:53,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:43:53,557 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816645837] [2019-11-07 00:43:53,557 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804934530] [2019-11-07 00:43:53,557 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 [2019-11-07 00:43:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:54,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 2952 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 00:43:54,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:43:54,205 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:54,302 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:54,302 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-11-07 00:43:54,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60862574] [2019-11-07 00:43:54,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:43:54,304 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:54,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:43:54,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:43:54,304 INFO L87 Difference]: Start difference. First operand 1130 states and 1775 transitions. Second operand 3 states. [2019-11-07 00:43:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:54,411 INFO L93 Difference]: Finished difference Result 2754 states and 4368 transitions. [2019-11-07 00:43:54,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:43:54,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-11-07 00:43:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:54,425 INFO L225 Difference]: With dead ends: 2754 [2019-11-07 00:43:54,425 INFO L226 Difference]: Without dead ends: 1658 [2019-11-07 00:43:54,432 INFO L630 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 [2019-11-07 00:43:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2019-11-07 00:43:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1609. [2019-11-07 00:43:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1609 states. [2019-11-07 00:43:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2548 transitions. [2019-11-07 00:43:54,506 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2548 transitions. Word has length 102 [2019-11-07 00:43:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:54,506 INFO L462 AbstractCegarLoop]: Abstraction has 1609 states and 2548 transitions. [2019-11-07 00:43:54,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:43:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2548 transitions. [2019-11-07 00:43:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-11-07 00:43:54,508 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:54,508 INFO L410 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] [2019-11-07 00:43:54,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:54,715 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:54,716 INFO L82 PathProgramCache]: Analyzing trace with hash 2036688864, now seen corresponding path program 1 times [2019-11-07 00:43:54,716 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:54,716 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721798967] [2019-11-07 00:43:54,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:54,861 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721798967] [2019-11-07 00:43:54,861 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:43:54,861 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:43:54,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44847481] [2019-11-07 00:43:54,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:43:54,864 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:54,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:43:54,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:43:54,865 INFO L87 Difference]: Start difference. First operand 1609 states and 2548 transitions. Second operand 7 states. [2019-11-07 00:43:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:43:57,627 INFO L93 Difference]: Finished difference Result 4737 states and 7695 transitions. [2019-11-07 00:43:57,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:43:57,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2019-11-07 00:43:57,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:43:57,659 INFO L225 Difference]: With dead ends: 4737 [2019-11-07 00:43:57,659 INFO L226 Difference]: Without dead ends: 3162 [2019-11-07 00:43:57,670 INFO L630 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 [2019-11-07 00:43:57,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2019-11-07 00:43:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3092. [2019-11-07 00:43:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3092 states. [2019-11-07 00:43:57,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4974 transitions. [2019-11-07 00:43:57,849 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4974 transitions. Word has length 104 [2019-11-07 00:43:57,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:43:57,849 INFO L462 AbstractCegarLoop]: Abstraction has 3092 states and 4974 transitions. [2019-11-07 00:43:57,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:43:57,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4974 transitions. [2019-11-07 00:43:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-07 00:43:57,851 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:43:57,852 INFO L410 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] [2019-11-07 00:43:57,852 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:43:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:43:57,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2032550312, now seen corresponding path program 1 times [2019-11-07 00:43:57,853 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:43:57,853 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007085477] [2019-11-07 00:43:57,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:43:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:43:58,018 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007085477] [2019-11-07 00:43:58,018 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50280455] [2019-11-07 00:43:58,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:43:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:43:58,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:43:58,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:43:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:43:58,696 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:43:58,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:43:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:43:58,996 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:43:58,997 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20 [2019-11-07 00:43:58,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098740440] [2019-11-07 00:43:58,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:43:58,998 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:43:58,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:43:58,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:43:58,999 INFO L87 Difference]: Start difference. First operand 3092 states and 4974 transitions. Second operand 11 states. [2019-11-07 00:44:04,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:04,382 INFO L93 Difference]: Finished difference Result 13830 states and 22741 transitions. [2019-11-07 00:44:04,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 00:44:04,382 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-11-07 00:44:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:04,641 INFO L225 Difference]: With dead ends: 13830 [2019-11-07 00:44:04,641 INFO L226 Difference]: Without dead ends: 10772 [2019-11-07 00:44:04,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:44:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2019-11-07 00:44:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 10652. [2019-11-07 00:44:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10652 states. [2019-11-07 00:44:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 17065 transitions. [2019-11-07 00:44:05,885 INFO L78 Accepts]: Start accepts. Automaton has 10652 states and 17065 transitions. Word has length 105 [2019-11-07 00:44:05,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:05,886 INFO L462 AbstractCegarLoop]: Abstraction has 10652 states and 17065 transitions. [2019-11-07 00:44:05,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:44:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 10652 states and 17065 transitions. [2019-11-07 00:44:05,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-07 00:44:05,888 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:05,888 INFO L410 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] [2019-11-07 00:44:06,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:44:06,096 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:06,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2040401702, now seen corresponding path program 1 times [2019-11-07 00:44:06,097 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:06,097 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160008533] [2019-11-07 00:44:06,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:44:06,377 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160008533] [2019-11-07 00:44:06,377 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:06,378 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:06,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023242305] [2019-11-07 00:44:06,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:06,382 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:06,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:06,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:06,383 INFO L87 Difference]: Start difference. First operand 10652 states and 17065 transitions. Second operand 4 states. [2019-11-07 00:44:06,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:06,794 INFO L93 Difference]: Finished difference Result 21288 states and 34429 transitions. [2019-11-07 00:44:06,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:06,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2019-11-07 00:44:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:06,889 INFO L225 Difference]: With dead ends: 21288 [2019-11-07 00:44:06,889 INFO L226 Difference]: Without dead ends: 10670 [2019-11-07 00:44:06,942 INFO L630 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 [2019-11-07 00:44:06,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2019-11-07 00:44:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 10634. [2019-11-07 00:44:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10634 states. [2019-11-07 00:44:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10634 states to 10634 states and 16964 transitions. [2019-11-07 00:44:07,708 INFO L78 Accepts]: Start accepts. Automaton has 10634 states and 16964 transitions. Word has length 105 [2019-11-07 00:44:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:07,708 INFO L462 AbstractCegarLoop]: Abstraction has 10634 states and 16964 transitions. [2019-11-07 00:44:07,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:44:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 10634 states and 16964 transitions. [2019-11-07 00:44:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 00:44:07,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:07,711 INFO L410 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] [2019-11-07 00:44:07,711 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash -431539305, now seen corresponding path program 1 times [2019-11-07 00:44:07,712 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:07,712 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317934894] [2019-11-07 00:44:07,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:44:07,886 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317934894] [2019-11-07 00:44:07,887 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:07,887 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:44:07,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339721329] [2019-11-07 00:44:07,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:44:07,888 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:07,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:44:07,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:44:07,889 INFO L87 Difference]: Start difference. First operand 10634 states and 16964 transitions. Second operand 7 states. [2019-11-07 00:44:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:11,146 INFO L93 Difference]: Finished difference Result 31882 states and 52630 transitions. [2019-11-07 00:44:11,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:44:11,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-11-07 00:44:11,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:11,298 INFO L225 Difference]: With dead ends: 31882 [2019-11-07 00:44:11,298 INFO L226 Difference]: Without dead ends: 21282 [2019-11-07 00:44:11,338 INFO L630 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 [2019-11-07 00:44:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21282 states. [2019-11-07 00:44:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21282 to 21096. [2019-11-07 00:44:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21096 states. [2019-11-07 00:44:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21096 states to 21096 states and 34209 transitions. [2019-11-07 00:44:12,580 INFO L78 Accepts]: Start accepts. Automaton has 21096 states and 34209 transitions. Word has length 113 [2019-11-07 00:44:12,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:44:12,582 INFO L462 AbstractCegarLoop]: Abstraction has 21096 states and 34209 transitions. [2019-11-07 00:44:12,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:44:12,582 INFO L276 IsEmpty]: Start isEmpty. Operand 21096 states and 34209 transitions. [2019-11-07 00:44:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-07 00:44:12,585 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:44:12,586 INFO L410 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] [2019-11-07 00:44:12,586 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:44:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:44:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash 75688011, now seen corresponding path program 1 times [2019-11-07 00:44:12,587 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:44:12,587 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338689434] [2019-11-07 00:44:12,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:44:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:44:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 00:44:12,717 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338689434] [2019-11-07 00:44:12,717 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:44:12,717 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:44:12,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435991586] [2019-11-07 00:44:12,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:44:12,718 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:44:12,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:44:12,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:44:12,719 INFO L87 Difference]: Start difference. First operand 21096 states and 34209 transitions. Second operand 4 states. [2019-11-07 00:44:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:44:13,518 INFO L93 Difference]: Finished difference Result 42266 states and 69296 transitions. [2019-11-07 00:44:13,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:44:13,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-11-07 00:44:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:44:13,672 INFO L225 Difference]: With dead ends: 42266 [2019-11-07 00:44:13,672 INFO L226 Difference]: Without dead ends: 21201 [2019-11-07 00:44:13,748 INFO L630 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 [2019-11-07 00:44:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21201 states. [2019-11-07 00:44:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21201 to 21127. [2019-11-07 00:44:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21127 states.