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_spec14_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:08:10,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:08:10,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:08:10,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:08:10,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:08:10,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:08:10,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:08:10,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:08:10,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:08:10,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:08:10,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:08:10,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:08:10,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:08:10,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:08:10,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:08:10,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:08:10,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:08:10,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:08:10,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:08:10,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:08:10,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:08:10,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:08:10,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:08:10,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:08:10,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:08:10,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:08:10,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:08:10,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:08:10,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:08:10,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:08:10,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:08:10,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:08:10,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:08:10,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:08:10,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:08:10,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:08:10,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:08:10,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:08:10,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:08:10,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:08:10,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:08:10,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:08:10,717 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:08:10,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:08:10,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:08:10,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:08:10,719 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:08:10,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:08:10,720 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:08:10,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:08:10,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:08:10,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:08:10,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:08:10,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:08:10,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:08:10,721 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:08:10,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:08:10,722 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:08:10,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:08:10,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:08:10,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:08:10,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:08:10,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:08:10,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:10,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:08:10,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:08:10,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:08:10,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:08:10,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:08:10,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:08:10,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:08:10,995 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:08:11,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:08:11,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:08:11,017 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:08:11,017 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:08:11,018 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c [2019-10-15 01:08:11,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ffc93b3/b31bfe523d714ac9aa2cfd83ec5938c4/FLAGefe04ff35 [2019-10-15 01:08:11,720 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:08:11,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c [2019-10-15 01:08:11,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ffc93b3/b31bfe523d714ac9aa2cfd83ec5938c4/FLAGefe04ff35 [2019-10-15 01:08:11,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ffc93b3/b31bfe523d714ac9aa2cfd83ec5938c4 [2019-10-15 01:08:11,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:08:11,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:08:11,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:11,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:08:11,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:08:11,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:11,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345a22c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11, skipping insertion in model container [2019-10-15 01:08:11,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:11,957 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:08:12,026 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:08:12,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:12,790 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:08:12,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:13,044 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:08:13,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13 WrapperNode [2019-10-15 01:08:13,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:13,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:08:13,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:08:13,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:08:13,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13" (1/1) ... [2019-10-15 01:08:13,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13" (1/1) ... [2019-10-15 01:08:13,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13" (1/1) ... [2019-10-15 01:08:13,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13" (1/1) ... [2019-10-15 01:08:13,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13" (1/1) ... [2019-10-15 01:08:13,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13" (1/1) ... [2019-10-15 01:08:13,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13" (1/1) ... [2019-10-15 01:08:13,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:08:13,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:08:13,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:08:13,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:08:13,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:13,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:08:13,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:08:13,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:13,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:08:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:08:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:08:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:08:13,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 01:08:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:08:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:08:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:08:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:08:13,354 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:08:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:08:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:08:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:08:13,355 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:08:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:08:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:08:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:08:13,356 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:08:13,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:08:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:08:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:08:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:08:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:08:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:08:13,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:08:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:08:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:08:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:08:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:08:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:08:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:08:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:08:13,359 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:08:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:08:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:08:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:08:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:08:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:08:13,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:08:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:08:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:08:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:08:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:08:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:08:13,361 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:08:13,362 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:08:13,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:08:13,362 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:08:13,362 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:08:13,362 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:08:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:08:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:08:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:08:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:08:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:08:13,363 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:08:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:08:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:08:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:08:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:08:13,364 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:08:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:08:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:08:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:08:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:08:13,365 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:08:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:08:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:08:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:08:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:08:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:08:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:08:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:08:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 01:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:08:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:08:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:08:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:08:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:08:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:08:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:08:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:08:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:08:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:08:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:08:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:08:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:08:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:08:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:08:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:08:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:08:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:08:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:08:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:08:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:08:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:08:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:08:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:08:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:08:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:08:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:08:13,375 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:08:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:08:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:08:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:08:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:08:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:08:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:08:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:08:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:08:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:08:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:08:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:08:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:08:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:08:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:08:13,378 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:08:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:08:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:08:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:08:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:08:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:08:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:08:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:08:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:08:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:08:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:08:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:08:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:08:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:08:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:08:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:08:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:08:13,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:08:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:08:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:08:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:08:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:08:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:08:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:08:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:08:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:08:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:08:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:08:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:08:15,703 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:08:15,704 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:08:15,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:15 BoogieIcfgContainer [2019-10-15 01:08:15,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:08:15,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:08:15,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:08:15,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:08:15,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:08:11" (1/3) ... [2019-10-15 01:08:15,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cf8d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:15, skipping insertion in model container [2019-10-15 01:08:15,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:13" (2/3) ... [2019-10-15 01:08:15,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76cf8d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:15, skipping insertion in model container [2019-10-15 01:08:15,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:15" (3/3) ... [2019-10-15 01:08:15,719 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product28.cil.c [2019-10-15 01:08:15,729 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:08:15,739 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:08:15,752 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:08:15,798 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:08:15,798 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:08:15,799 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:08:15,799 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:08:15,799 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:08:15,799 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:08:15,799 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:08:15,799 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:08:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states. [2019-10-15 01:08:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 01:08:15,876 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:15,877 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:15,881 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:15,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:15,888 INFO L82 PathProgramCache]: Analyzing trace with hash 409688857, now seen corresponding path program 1 times [2019-10-15 01:08:15,898 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:15,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89406319] [2019-10-15 01:08:15,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:16,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89406319] [2019-10-15 01:08:16,583 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:16,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:16,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314120345] [2019-10-15 01:08:16,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:16,591 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:16,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:16,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:16,610 INFO L87 Difference]: Start difference. First operand 767 states. Second operand 4 states. [2019-10-15 01:08:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:16,869 INFO L93 Difference]: Finished difference Result 1218 states and 1946 transitions. [2019-10-15 01:08:16,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:16,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-10-15 01:08:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:16,907 INFO L225 Difference]: With dead ends: 1218 [2019-10-15 01:08:16,907 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:16,920 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:08:17,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:08:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 964 transitions. [2019-10-15 01:08:17,024 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 964 transitions. Word has length 87 [2019-10-15 01:08:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:17,025 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 964 transitions. [2019-10-15 01:08:17,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:17,025 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 964 transitions. [2019-10-15 01:08:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 01:08:17,030 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:17,031 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:17,031 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:17,031 INFO L82 PathProgramCache]: Analyzing trace with hash -728771867, now seen corresponding path program 1 times [2019-10-15 01:08:17,032 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:17,032 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725682128] [2019-10-15 01:08:17,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:17,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725682128] [2019-10-15 01:08:17,215 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:17,215 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:17,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288545964] [2019-10-15 01:08:17,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:17,218 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:17,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:17,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:17,219 INFO L87 Difference]: Start difference. First operand 612 states and 964 transitions. Second operand 4 states. [2019-10-15 01:08:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:17,303 INFO L93 Difference]: Finished difference Result 1191 states and 1889 transitions. [2019-10-15 01:08:17,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:17,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-10-15 01:08:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:17,311 INFO L225 Difference]: With dead ends: 1191 [2019-10-15 01:08:17,311 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:17,315 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:08:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:08:17,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 963 transitions. [2019-10-15 01:08:17,373 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 963 transitions. Word has length 88 [2019-10-15 01:08:17,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:17,374 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 963 transitions. [2019-10-15 01:08:17,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 963 transitions. [2019-10-15 01:08:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-15 01:08:17,381 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:17,382 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:17,382 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:17,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:17,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1257668075, now seen corresponding path program 1 times [2019-10-15 01:08:17,382 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:17,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342842204] [2019-10-15 01:08:17,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,383 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:17,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342842204] [2019-10-15 01:08:17,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:17,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:17,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126453367] [2019-10-15 01:08:17,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:17,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:17,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:17,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:17,588 INFO L87 Difference]: Start difference. First operand 612 states and 963 transitions. Second operand 4 states. [2019-10-15 01:08:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:17,661 INFO L93 Difference]: Finished difference Result 1191 states and 1888 transitions. [2019-10-15 01:08:17,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:17,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-10-15 01:08:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:17,668 INFO L225 Difference]: With dead ends: 1191 [2019-10-15 01:08:17,669 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:17,672 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:08:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:08:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 962 transitions. [2019-10-15 01:08:17,705 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 962 transitions. Word has length 89 [2019-10-15 01:08:17,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:17,705 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 962 transitions. [2019-10-15 01:08:17,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 962 transitions. [2019-10-15 01:08:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-15 01:08:17,707 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:17,708 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:17,708 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:17,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:17,708 INFO L82 PathProgramCache]: Analyzing trace with hash -69933471, now seen corresponding path program 1 times [2019-10-15 01:08:17,709 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:17,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537520466] [2019-10-15 01:08:17,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:17,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537520466] [2019-10-15 01:08:17,868 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:17,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:17,868 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810970824] [2019-10-15 01:08:17,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:17,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:17,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:17,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:17,869 INFO L87 Difference]: Start difference. First operand 612 states and 962 transitions. Second operand 4 states. [2019-10-15 01:08:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:17,958 INFO L93 Difference]: Finished difference Result 1191 states and 1887 transitions. [2019-10-15 01:08:17,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:17,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-15 01:08:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:17,965 INFO L225 Difference]: With dead ends: 1191 [2019-10-15 01:08:17,965 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:17,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:08:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:08:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 961 transitions. [2019-10-15 01:08:17,998 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 961 transitions. Word has length 90 [2019-10-15 01:08:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:17,999 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 961 transitions. [2019-10-15 01:08:17,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 961 transitions. [2019-10-15 01:08:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 01:08:18,005 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:18,006 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:18,006 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1501218543, now seen corresponding path program 1 times [2019-10-15 01:08:18,007 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:18,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548194332] [2019-10-15 01:08:18,008 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,008 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:18,155 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548194332] [2019-10-15 01:08:18,155 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,155 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:18,155 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388790764] [2019-10-15 01:08:18,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:18,156 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:18,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:18,158 INFO L87 Difference]: Start difference. First operand 612 states and 961 transitions. Second operand 4 states. [2019-10-15 01:08:18,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,232 INFO L93 Difference]: Finished difference Result 1191 states and 1886 transitions. [2019-10-15 01:08:18,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:18,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-15 01:08:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,241 INFO L225 Difference]: With dead ends: 1191 [2019-10-15 01:08:18,241 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:18,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:18,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-10-15 01:08:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:08:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 960 transitions. [2019-10-15 01:08:18,271 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 960 transitions. Word has length 91 [2019-10-15 01:08:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:18,272 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 960 transitions. [2019-10-15 01:08:18,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:18,272 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 960 transitions. [2019-10-15 01:08:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:08:18,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:18,277 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:18,278 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:18,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1777232349, now seen corresponding path program 1 times [2019-10-15 01:08:18,279 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:18,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033569167] [2019-10-15 01:08:18,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,282 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:18,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033569167] [2019-10-15 01:08:18,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:08:18,560 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533611291] [2019-10-15 01:08:18,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:08:18,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:08:18,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:08:18,562 INFO L87 Difference]: Start difference. First operand 612 states and 960 transitions. Second operand 10 states. [2019-10-15 01:08:18,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,764 INFO L93 Difference]: Finished difference Result 1196 states and 1893 transitions. [2019-10-15 01:08:18,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:18,764 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-10-15 01:08:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,770 INFO L225 Difference]: With dead ends: 1196 [2019-10-15 01:08:18,770 INFO L226 Difference]: Without dead ends: 621 [2019-10-15 01:08:18,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-15 01:08:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 619. [2019-10-15 01:08:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:08:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 970 transitions. [2019-10-15 01:08:18,801 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 970 transitions. Word has length 92 [2019-10-15 01:08:18,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:18,802 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 970 transitions. [2019-10-15 01:08:18,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:08:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 970 transitions. [2019-10-15 01:08:18,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:08:18,804 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:18,805 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:18,805 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:18,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1878144316, now seen corresponding path program 1 times [2019-10-15 01:08:18,805 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:18,806 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543574329] [2019-10-15 01:08:18,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:18,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543574329] [2019-10-15 01:08:18,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:18,905 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016739463] [2019-10-15 01:08:18,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:18,905 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:18,906 INFO L87 Difference]: Start difference. First operand 619 states and 970 transitions. Second operand 4 states. [2019-10-15 01:08:18,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,973 INFO L93 Difference]: Finished difference Result 1197 states and 1894 transitions. [2019-10-15 01:08:18,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:18,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-15 01:08:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,980 INFO L225 Difference]: With dead ends: 1197 [2019-10-15 01:08:18,980 INFO L226 Difference]: Without dead ends: 615 [2019-10-15 01:08:18,983 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-15 01:08:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-15 01:08:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-15 01:08:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 963 transitions. [2019-10-15 01:08:19,006 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 963 transitions. Word has length 92 [2019-10-15 01:08:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,006 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 963 transitions. [2019-10-15 01:08:19,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:19,006 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 963 transitions. [2019-10-15 01:08:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:08:19,008 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,009 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,009 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1995337811, now seen corresponding path program 1 times [2019-10-15 01:08:19,010 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,010 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544114417] [2019-10-15 01:08:19,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:19,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544114417] [2019-10-15 01:08:19,153 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:19,154 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736790411] [2019-10-15 01:08:19,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:19,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:19,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:19,156 INFO L87 Difference]: Start difference. First operand 615 states and 963 transitions. Second operand 6 states. [2019-10-15 01:08:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,545 INFO L93 Difference]: Finished difference Result 1210 states and 1918 transitions. [2019-10-15 01:08:19,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:08:19,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-10-15 01:08:19,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,551 INFO L225 Difference]: With dead ends: 1210 [2019-10-15 01:08:19,552 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 01:08:19,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 01:08:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 620. [2019-10-15 01:08:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:08:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 964 transitions. [2019-10-15 01:08:19,587 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 964 transitions. Word has length 93 [2019-10-15 01:08:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,587 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 964 transitions. [2019-10-15 01:08:19,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 964 transitions. [2019-10-15 01:08:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:08:19,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,589 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,590 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1824175936, now seen corresponding path program 1 times [2019-10-15 01:08:19,590 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,591 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815906832] [2019-10-15 01:08:19,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:19,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815906832] [2019-10-15 01:08:19,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:19,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741479071] [2019-10-15 01:08:19,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:19,754 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:19,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:19,755 INFO L87 Difference]: Start difference. First operand 620 states and 964 transitions. Second operand 6 states. [2019-10-15 01:08:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:20,042 INFO L93 Difference]: Finished difference Result 1173 states and 1833 transitions. [2019-10-15 01:08:20,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:20,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-10-15 01:08:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:20,048 INFO L225 Difference]: With dead ends: 1173 [2019-10-15 01:08:20,049 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:08:20,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:20,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:08:20,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:08:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:08:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 960 transitions. [2019-10-15 01:08:20,073 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 960 transitions. Word has length 94 [2019-10-15 01:08:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:20,074 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 960 transitions. [2019-10-15 01:08:20,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 960 transitions. [2019-10-15 01:08:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:08:20,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:20,076 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:20,076 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:20,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1850857070, now seen corresponding path program 1 times [2019-10-15 01:08:20,077 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:20,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573203563] [2019-10-15 01:08:20,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:20,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573203563] [2019-10-15 01:08:20,197 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:20,198 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:20,198 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110418691] [2019-10-15 01:08:20,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:20,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:20,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:20,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:20,199 INFO L87 Difference]: Start difference. First operand 620 states and 960 transitions. Second operand 6 states. [2019-10-15 01:08:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:20,427 INFO L93 Difference]: Finished difference Result 1173 states and 1829 transitions. [2019-10-15 01:08:20,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:20,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-15 01:08:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:20,433 INFO L225 Difference]: With dead ends: 1173 [2019-10-15 01:08:20,434 INFO L226 Difference]: Without dead ends: 620 [2019-10-15 01:08:20,437 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-15 01:08:20,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-15 01:08:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 01:08:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 956 transitions. [2019-10-15 01:08:20,505 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 956 transitions. Word has length 95 [2019-10-15 01:08:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:20,505 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 956 transitions. [2019-10-15 01:08:20,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 956 transitions. [2019-10-15 01:08:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:08:20,507 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:20,507 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:20,508 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:20,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1548805650, now seen corresponding path program 1 times [2019-10-15 01:08:20,508 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:20,508 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423561756] [2019-10-15 01:08:20,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:20,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423561756] [2019-10-15 01:08:20,635 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:20,636 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:08:20,636 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133785250] [2019-10-15 01:08:20,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:08:20,636 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:20,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:08:20,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:20,637 INFO L87 Difference]: Start difference. First operand 620 states and 956 transitions. Second operand 7 states. [2019-10-15 01:08:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:20,733 INFO L93 Difference]: Finished difference Result 1176 states and 1829 transitions. [2019-10-15 01:08:20,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:08:20,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-15 01:08:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:20,738 INFO L225 Difference]: With dead ends: 1176 [2019-10-15 01:08:20,738 INFO L226 Difference]: Without dead ends: 602 [2019-10-15 01:08:20,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:20,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-15 01:08:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 599. [2019-10-15 01:08:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-15 01:08:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 919 transitions. [2019-10-15 01:08:20,766 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 919 transitions. Word has length 95 [2019-10-15 01:08:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:20,767 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 919 transitions. [2019-10-15 01:08:20,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:08:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 919 transitions. [2019-10-15 01:08:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:08:20,768 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:20,769 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:20,769 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:20,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash 579263109, now seen corresponding path program 1 times [2019-10-15 01:08:20,769 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:20,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198051545] [2019-10-15 01:08:20,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:20,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198051545] [2019-10-15 01:08:20,913 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:20,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:20,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144396576] [2019-10-15 01:08:20,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:20,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:20,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:20,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:20,915 INFO L87 Difference]: Start difference. First operand 599 states and 919 transitions. Second operand 6 states. [2019-10-15 01:08:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:21,074 INFO L93 Difference]: Finished difference Result 1152 states and 1788 transitions. [2019-10-15 01:08:21,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:21,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-15 01:08:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:21,080 INFO L225 Difference]: With dead ends: 1152 [2019-10-15 01:08:21,080 INFO L226 Difference]: Without dead ends: 599 [2019-10-15 01:08:21,084 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-15 01:08:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-15 01:08:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-15 01:08:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 918 transitions. [2019-10-15 01:08:21,105 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 918 transitions. Word has length 96 [2019-10-15 01:08:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:21,105 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 918 transitions. [2019-10-15 01:08:21,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 918 transitions. [2019-10-15 01:08:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:08:21,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:21,107 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:21,107 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:21,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:21,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1860812663, now seen corresponding path program 1 times [2019-10-15 01:08:21,108 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:21,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211407095] [2019-10-15 01:08:21,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:21,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211407095] [2019-10-15 01:08:21,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:21,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:21,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083412372] [2019-10-15 01:08:21,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:21,220 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:21,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:21,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:21,220 INFO L87 Difference]: Start difference. First operand 599 states and 918 transitions. Second operand 6 states. [2019-10-15 01:08:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:21,349 INFO L93 Difference]: Finished difference Result 1152 states and 1787 transitions. [2019-10-15 01:08:21,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:21,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-15 01:08:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:21,355 INFO L225 Difference]: With dead ends: 1152 [2019-10-15 01:08:21,355 INFO L226 Difference]: Without dead ends: 599 [2019-10-15 01:08:21,358 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:21,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-15 01:08:21,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-15 01:08:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-15 01:08:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 917 transitions. [2019-10-15 01:08:21,410 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 917 transitions. Word has length 97 [2019-10-15 01:08:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:21,411 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 917 transitions. [2019-10-15 01:08:21,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 917 transitions. [2019-10-15 01:08:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:08:21,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:21,413 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:21,413 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:21,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:21,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1896411210, now seen corresponding path program 1 times [2019-10-15 01:08:21,413 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:21,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324005832] [2019-10-15 01:08:21,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:21,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324005832] [2019-10-15 01:08:21,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:21,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:08:21,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732892159] [2019-10-15 01:08:21,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:08:21,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:21,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:08:21,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:21,575 INFO L87 Difference]: Start difference. First operand 599 states and 917 transitions. Second operand 12 states. [2019-10-15 01:08:21,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:21,835 INFO L93 Difference]: Finished difference Result 1158 states and 1797 transitions. [2019-10-15 01:08:21,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:08:21,836 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-10-15 01:08:21,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:21,840 INFO L225 Difference]: With dead ends: 1158 [2019-10-15 01:08:21,841 INFO L226 Difference]: Without dead ends: 606 [2019-10-15 01:08:21,845 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:21,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2019-10-15 01:08:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 604. [2019-10-15 01:08:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-10-15 01:08:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 923 transitions. [2019-10-15 01:08:21,879 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 923 transitions. Word has length 98 [2019-10-15 01:08:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:21,880 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 923 transitions. [2019-10-15 01:08:21,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:08:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 923 transitions. [2019-10-15 01:08:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:08:21,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:21,882 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:21,883 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:21,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:21,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1663995072, now seen corresponding path program 1 times [2019-10-15 01:08:21,883 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:21,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832533693] [2019-10-15 01:08:21,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,884 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:08:22,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832533693] [2019-10-15 01:08:22,008 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:22,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:08:22,008 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802540038] [2019-10-15 01:08:22,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:08:22,009 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:22,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:08:22,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:08:22,010 INFO L87 Difference]: Start difference. First operand 604 states and 923 transitions. Second operand 3 states. [2019-10-15 01:08:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:22,155 INFO L93 Difference]: Finished difference Result 1688 states and 2646 transitions. [2019-10-15 01:08:22,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:08:22,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-10-15 01:08:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:22,164 INFO L225 Difference]: With dead ends: 1688 [2019-10-15 01:08:22,164 INFO L226 Difference]: Without dead ends: 1137 [2019-10-15 01:08:22,168 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:08:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2019-10-15 01:08:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1065. [2019-10-15 01:08:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2019-10-15 01:08:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1661 transitions. [2019-10-15 01:08:22,222 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1661 transitions. Word has length 99 [2019-10-15 01:08:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:22,224 INFO L462 AbstractCegarLoop]: Abstraction has 1065 states and 1661 transitions. [2019-10-15 01:08:22,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:08:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1661 transitions. [2019-10-15 01:08:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:08:22,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:22,229 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:22,229 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:22,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:22,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2131650664, now seen corresponding path program 1 times [2019-10-15 01:08:22,230 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:22,230 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562150329] [2019-10-15 01:08:22,230 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,230 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:08:22,458 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562150329] [2019-10-15 01:08:22,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659671868] [2019-10-15 01:08:22,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:23,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 01:08:23,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:23,190 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:08:23,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:23,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 15 [2019-10-15 01:08:23,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743362096] [2019-10-15 01:08:23,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:23,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:23,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:23,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:08:23,477 INFO L87 Difference]: Start difference. First operand 1065 states and 1661 transitions. Second operand 6 states. [2019-10-15 01:08:24,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:24,292 INFO L93 Difference]: Finished difference Result 2685 states and 4196 transitions. [2019-10-15 01:08:24,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:08:24,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2019-10-15 01:08:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:24,306 INFO L225 Difference]: With dead ends: 2685 [2019-10-15 01:08:24,306 INFO L226 Difference]: Without dead ends: 1673 [2019-10-15 01:08:24,313 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 306 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2019-10-15 01:08:24,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1670. [2019-10-15 01:08:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2019-10-15 01:08:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2575 transitions. [2019-10-15 01:08:24,396 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2575 transitions. Word has length 157 [2019-10-15 01:08:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:24,397 INFO L462 AbstractCegarLoop]: Abstraction has 1670 states and 2575 transitions. [2019-10-15 01:08:24,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2575 transitions. [2019-10-15 01:08:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:08:24,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:24,403 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:24,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:24,618 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:24,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash -352606121, now seen corresponding path program 1 times [2019-10-15 01:08:24,618 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:24,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086371842] [2019-10-15 01:08:24,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:24,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:24,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:08:24,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086371842] [2019-10-15 01:08:24,877 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149939199] [2019-10-15 01:08:24,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:25,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:25,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:08:25,657 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:08:26,096 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:26,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 18 [2019-10-15 01:08:26,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688810759] [2019-10-15 01:08:26,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:26,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:26,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:08:26,099 INFO L87 Difference]: Start difference. First operand 1670 states and 2575 transitions. Second operand 5 states. [2019-10-15 01:08:26,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:26,998 INFO L93 Difference]: Finished difference Result 3319 states and 5295 transitions. [2019-10-15 01:08:26,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:26,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-15 01:08:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:27,011 INFO L225 Difference]: With dead ends: 3319 [2019-10-15 01:08:27,011 INFO L226 Difference]: Without dead ends: 1702 [2019-10-15 01:08:27,020 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 316 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:08:27,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2019-10-15 01:08:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2019-10-15 01:08:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2019-10-15 01:08:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2627 transitions. [2019-10-15 01:08:27,095 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2627 transitions. Word has length 158 [2019-10-15 01:08:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:27,096 INFO L462 AbstractCegarLoop]: Abstraction has 1702 states and 2627 transitions. [2019-10-15 01:08:27,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2627 transitions. [2019-10-15 01:08:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:08:27,101 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:27,102 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:27,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:27,316 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:27,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1773700941, now seen corresponding path program 1 times [2019-10-15 01:08:27,317 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:27,317 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701557313] [2019-10-15 01:08:27,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:27,317 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:27,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:08:27,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701557313] [2019-10-15 01:08:27,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:27,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:08:27,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429285451] [2019-10-15 01:08:27,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:27,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:27,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:27,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:27,462 INFO L87 Difference]: Start difference. First operand 1702 states and 2627 transitions. Second operand 5 states. [2019-10-15 01:08:30,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:30,980 INFO L93 Difference]: Finished difference Result 3841 states and 5946 transitions. [2019-10-15 01:08:30,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:08:30,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2019-10-15 01:08:30,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:30,996 INFO L225 Difference]: With dead ends: 3841 [2019-10-15 01:08:30,996 INFO L226 Difference]: Without dead ends: 2195 [2019-10-15 01:08:31,004 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2019-10-15 01:08:31,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2115. [2019-10-15 01:08:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2115 states. [2019-10-15 01:08:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 3248 transitions. [2019-10-15 01:08:31,107 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 3248 transitions. Word has length 161 [2019-10-15 01:08:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:31,107 INFO L462 AbstractCegarLoop]: Abstraction has 2115 states and 3248 transitions. [2019-10-15 01:08:31,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 3248 transitions. [2019-10-15 01:08:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:08:31,112 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:31,112 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:31,113 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1567326197, now seen corresponding path program 1 times [2019-10-15 01:08:31,113 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:31,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780554159] [2019-10-15 01:08:31,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:31,114 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:31,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:08:31,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780554159] [2019-10-15 01:08:31,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947207241] [2019-10-15 01:08:31,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:31,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:31,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:31,960 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:08:32,403 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:32,403 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-15 01:08:32,404 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317757679] [2019-10-15 01:08:32,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:32,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:32,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:32,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:08:32,407 INFO L87 Difference]: Start difference. First operand 2115 states and 3248 transitions. Second operand 5 states. [2019-10-15 01:08:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:33,309 INFO L93 Difference]: Finished difference Result 4225 states and 6712 transitions. [2019-10-15 01:08:33,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:33,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2019-10-15 01:08:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:33,331 INFO L225 Difference]: With dead ends: 4225 [2019-10-15 01:08:33,332 INFO L226 Difference]: Without dead ends: 2163 [2019-10-15 01:08:33,343 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 311 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:33,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2019-10-15 01:08:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2019-10-15 01:08:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2019-10-15 01:08:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3326 transitions. [2019-10-15 01:08:33,441 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3326 transitions. Word has length 161 [2019-10-15 01:08:33,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:33,441 INFO L462 AbstractCegarLoop]: Abstraction has 2163 states and 3326 transitions. [2019-10-15 01:08:33,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3326 transitions. [2019-10-15 01:08:33,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:08:33,446 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:33,446 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:33,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:33,662 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:33,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1359183901, now seen corresponding path program 1 times [2019-10-15 01:08:33,664 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:33,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526458526] [2019-10-15 01:08:33,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:33,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:33,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:33,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526458526] [2019-10-15 01:08:33,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131804601] [2019-10-15 01:08:33,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:34,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:34,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:34,525 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:08:34,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:34,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 18 [2019-10-15 01:08:34,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639055103] [2019-10-15 01:08:34,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:34,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:34,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:34,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:08:34,991 INFO L87 Difference]: Start difference. First operand 2163 states and 3326 transitions. Second operand 5 states. [2019-10-15 01:08:35,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:35,921 INFO L93 Difference]: Finished difference Result 4321 states and 6854 transitions. [2019-10-15 01:08:35,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:35,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2019-10-15 01:08:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:35,936 INFO L225 Difference]: With dead ends: 4321 [2019-10-15 01:08:35,936 INFO L226 Difference]: Without dead ends: 2211 [2019-10-15 01:08:35,947 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 328 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:08:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2019-10-15 01:08:36,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2211. [2019-10-15 01:08:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2211 states. [2019-10-15 01:08:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 3404 transitions. [2019-10-15 01:08:36,030 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 3404 transitions. Word has length 164 [2019-10-15 01:08:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:36,032 INFO L462 AbstractCegarLoop]: Abstraction has 2211 states and 3404 transitions. [2019-10-15 01:08:36,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 3404 transitions. [2019-10-15 01:08:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:08:36,040 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:36,040 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:36,247 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:36,247 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:36,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:36,248 INFO L82 PathProgramCache]: Analyzing trace with hash 759073009, now seen corresponding path program 1 times [2019-10-15 01:08:36,248 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:36,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745672] [2019-10-15 01:08:36,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:36,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:36,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:36,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745672] [2019-10-15 01:08:36,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035210777] [2019-10-15 01:08:36,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:37,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:37,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:08:37,168 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:08:37,554 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:37,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 6] total 17 [2019-10-15 01:08:37,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93077513] [2019-10-15 01:08:37,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:37,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:37,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:37,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:37,556 INFO L87 Difference]: Start difference. First operand 2211 states and 3404 transitions. Second operand 5 states. [2019-10-15 01:08:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:38,490 INFO L93 Difference]: Finished difference Result 4417 states and 6996 transitions. [2019-10-15 01:08:38,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:38,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2019-10-15 01:08:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:38,507 INFO L225 Difference]: With dead ends: 4417 [2019-10-15 01:08:38,507 INFO L226 Difference]: Without dead ends: 2259 [2019-10-15 01:08:38,517 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 334 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:08:38,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2019-10-15 01:08:38,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2259. [2019-10-15 01:08:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2259 states. [2019-10-15 01:08:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3482 transitions. [2019-10-15 01:08:38,606 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3482 transitions. Word has length 167 [2019-10-15 01:08:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:38,606 INFO L462 AbstractCegarLoop]: Abstraction has 2259 states and 3482 transitions. [2019-10-15 01:08:38,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3482 transitions. [2019-10-15 01:08:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:08:38,614 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:38,614 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:38,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:38,829 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2093169185, now seen corresponding path program 1 times [2019-10-15 01:08:38,830 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:38,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009658328] [2019-10-15 01:08:38,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:38,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:38,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:08:39,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009658328] [2019-10-15 01:08:39,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843876329] [2019-10-15 01:08:39,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:39,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 01:08:39,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:08:39,682 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-10-15 01:08:39,884 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:39,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [11] total 18 [2019-10-15 01:08:39,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038097999] [2019-10-15 01:08:39,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:08:39,884 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:39,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:08:39,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:08:39,885 INFO L87 Difference]: Start difference. First operand 2259 states and 3482 transitions. Second operand 9 states.