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_spec2_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:10:54,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:10:54,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:10:54,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:10:54,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:10:54,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:10:54,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:10:54,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:10:54,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:10:54,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:10:54,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:10:54,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:10:54,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:10:54,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:10:54,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:10:54,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:10:54,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:10:54,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:10:54,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:10:54,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:10:54,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:10:54,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:10:54,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:10:54,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:10:54,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:10:54,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:10:54,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:10:54,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:10:54,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:10:54,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:10:54,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:10:54,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:10:54,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:10:54,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:10:54,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:10:54,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:10:54,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:10:54,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:10:54,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:10:54,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:10:54,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:10:54,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:10:54,281 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:10:54,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:10:54,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:10:54,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:10:54,284 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:10:54,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:10:54,284 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:10:54,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:10:54,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:10:54,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:10:54,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:10:54,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:10:54,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:10:54,285 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:10:54,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:10:54,286 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:10:54,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:10:54,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:10:54,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:10:54,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:10:54,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:10:54,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:10:54,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:10:54,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:10:54,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:10:54,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:10:54,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:10:54,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:10:54,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:10:54,572 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:10:54,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:10:54,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:10:54,590 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:10:54,590 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:10:54,591 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c [2019-10-13 21:10:54,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9936629c9/56d836eeedfd4ffb8111360ad265dccb/FLAG6390a72b0 [2019-10-13 21:10:55,398 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:10:55,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c [2019-10-13 21:10:55,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9936629c9/56d836eeedfd4ffb8111360ad265dccb/FLAG6390a72b0 [2019-10-13 21:10:55,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9936629c9/56d836eeedfd4ffb8111360ad265dccb [2019-10-13 21:10:55,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:10:55,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:10:55,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:10:55,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:10:55,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:10:55,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:55" (1/1) ... [2019-10-13 21:10:55,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfc0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:55, skipping insertion in model container [2019-10-13 21:10:55,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:55" (1/1) ... [2019-10-13 21:10:55,567 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:10:55,653 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:10:56,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:10:56,526 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:10:56,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:10:56,726 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:10:56,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56 WrapperNode [2019-10-13 21:10:56,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:10:56,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:10:56,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:10:56,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:10:56,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56" (1/1) ... [2019-10-13 21:10:56,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56" (1/1) ... [2019-10-13 21:10:56,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56" (1/1) ... [2019-10-13 21:10:56,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56" (1/1) ... [2019-10-13 21:10:56,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56" (1/1) ... [2019-10-13 21:10:56,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56" (1/1) ... [2019-10-13 21:10:56,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56" (1/1) ... [2019-10-13 21:10:56,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:10:56,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:10:56,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:10:56,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:10:56,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:10:57,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:10:57,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:10:57,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:10:57,009 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:10:57,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:10:57,010 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:10:57,010 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:10:57,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:10:57,011 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:10:57,011 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:10:57,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:10:57,011 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:10:57,012 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:10:57,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:10:57,012 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:10:57,012 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:10:57,012 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:10:57,013 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:10:57,013 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:10:57,014 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:10:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:10:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:10:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:10:57,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:10:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:10:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:10:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:10:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 21:10:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 21:10:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:10:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:10:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:10:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 21:10:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 21:10:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:10:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:10:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:10:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 21:10:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:10:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 21:10:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:10:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:10:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:10:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:10:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 21:10:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 21:10:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 21:10:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 21:10:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:10:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:10:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:10:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:10:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:10:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:10:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:10:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:10:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:10:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:10:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:10:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:10:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:10:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:10:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:10:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:10:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:10:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:10:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:10:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:10:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:10:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:10:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:10:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:10:57,026 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:10:57,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:10:57,027 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:10:57,027 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:10:57,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:10:57,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:10:57,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:10:57,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:10:57,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:10:57,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:10:57,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:10:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:10:57,030 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:10:57,031 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:10:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:10:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:10:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:10:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:10:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:10:57,032 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:10:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:10:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:10:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:10:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:10:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:10:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:10:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:10:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:10:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:10:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:10:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:10:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:10:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:10:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:10:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:10:57,035 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:10:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:10:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:10:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:10:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:10:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 21:10:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:10:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:10:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:10:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:10:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 21:10:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-13 21:10:57,038 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:10:57,039 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:10:57,039 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 21:10:57,039 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-13 21:10:57,039 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:10:57,040 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:10:57,040 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:10:57,041 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 21:10:57,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 21:10:57,041 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 21:10:57,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:10:57,041 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:10:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:10:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 21:10:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 21:10:57,042 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:10:57,043 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:10:57,044 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:10:57,047 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:10:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:10:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:10:57,048 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:10:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:10:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:10:57,049 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:10:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:10:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:10:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:10:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:10:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:10:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:10:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:10:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:10:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:10:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:10:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:10:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:10:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:10:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:10:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:10:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:10:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:10:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:10:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:10:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:10:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:10:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:10:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:10:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:10:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:10:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:10:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:10:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:10:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:10:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:10:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:10:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:10:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:10:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:10:57,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:10:59,640 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:10:59,640 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:10:59,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:10:59 BoogieIcfgContainer [2019-10-13 21:10:59,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:10:59,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:10:59,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:10:59,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:10:59,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:10:55" (1/3) ... [2019-10-13 21:10:59,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fda69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:10:59, skipping insertion in model container [2019-10-13 21:10:59,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:56" (2/3) ... [2019-10-13 21:10:59,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fda69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:10:59, skipping insertion in model container [2019-10-13 21:10:59,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:10:59" (3/3) ... [2019-10-13 21:10:59,654 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c [2019-10-13 21:10:59,667 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:10:59,677 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:10:59,692 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:10:59,732 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:10:59,732 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:10:59,732 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:10:59,732 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:10:59,733 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:10:59,733 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:10:59,733 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:10:59,733 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:10:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states. [2019-10-13 21:10:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-13 21:10:59,800 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:10:59,801 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:10:59,804 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:10:59,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:10:59,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1311658421, now seen corresponding path program 1 times [2019-10-13 21:10:59,822 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:10:59,822 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198346911] [2019-10-13 21:10:59,823 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:59,823 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:10:59,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:00,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198346911] [2019-10-13 21:11:00,533 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:00,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:00,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97019929] [2019-10-13 21:11:00,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:00,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:00,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:00,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:00,558 INFO L87 Difference]: Start difference. First operand 817 states. Second operand 4 states. [2019-10-13 21:11:00,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:00,745 INFO L93 Difference]: Finished difference Result 1283 states and 2055 transitions. [2019-10-13 21:11:00,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:00,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2019-10-13 21:11:00,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:00,782 INFO L225 Difference]: With dead ends: 1283 [2019-10-13 21:11:00,783 INFO L226 Difference]: Without dead ends: 650 [2019-10-13 21:11:00,797 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:00,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-13 21:11:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-10-13 21:11:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-10-13 21:11:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1029 transitions. [2019-10-13 21:11:00,948 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1029 transitions. Word has length 85 [2019-10-13 21:11:00,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:00,949 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1029 transitions. [2019-10-13 21:11:00,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:00,949 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1029 transitions. [2019-10-13 21:11:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 21:11:00,958 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:00,959 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:00,959 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:00,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1025593736, now seen corresponding path program 1 times [2019-10-13 21:11:00,960 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:00,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481032915] [2019-10-13 21:11:00,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:00,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:00,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:01,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481032915] [2019-10-13 21:11:01,215 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:01,216 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:01,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916878111] [2019-10-13 21:11:01,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:01,219 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:01,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:01,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:01,220 INFO L87 Difference]: Start difference. First operand 650 states and 1029 transitions. Second operand 4 states. [2019-10-13 21:11:01,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:01,332 INFO L93 Difference]: Finished difference Result 1263 states and 2016 transitions. [2019-10-13 21:11:01,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:01,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-10-13 21:11:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:01,344 INFO L225 Difference]: With dead ends: 1263 [2019-10-13 21:11:01,344 INFO L226 Difference]: Without dead ends: 650 [2019-10-13 21:11:01,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-13 21:11:01,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-10-13 21:11:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-10-13 21:11:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1028 transitions. [2019-10-13 21:11:01,387 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1028 transitions. Word has length 88 [2019-10-13 21:11:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:01,388 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1028 transitions. [2019-10-13 21:11:01,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1028 transitions. [2019-10-13 21:11:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 21:11:01,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:01,390 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:01,391 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:01,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1118647296, now seen corresponding path program 1 times [2019-10-13 21:11:01,391 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:01,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812221903] [2019-10-13 21:11:01,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:01,392 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:01,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:01,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812221903] [2019-10-13 21:11:01,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:01,593 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:01,593 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299361930] [2019-10-13 21:11:01,594 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:01,596 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:01,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:01,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:01,597 INFO L87 Difference]: Start difference. First operand 650 states and 1028 transitions. Second operand 4 states. [2019-10-13 21:11:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:01,685 INFO L93 Difference]: Finished difference Result 1263 states and 2015 transitions. [2019-10-13 21:11:01,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:01,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-10-13 21:11:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:01,692 INFO L225 Difference]: With dead ends: 1263 [2019-10-13 21:11:01,692 INFO L226 Difference]: Without dead ends: 650 [2019-10-13 21:11:01,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-13 21:11:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-10-13 21:11:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-10-13 21:11:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1027 transitions. [2019-10-13 21:11:01,736 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1027 transitions. Word has length 89 [2019-10-13 21:11:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:01,737 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1027 transitions. [2019-10-13 21:11:01,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1027 transitions. [2019-10-13 21:11:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 21:11:01,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:01,739 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:01,739 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:01,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:01,739 INFO L82 PathProgramCache]: Analyzing trace with hash -210310140, now seen corresponding path program 1 times [2019-10-13 21:11:01,740 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:01,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844140435] [2019-10-13 21:11:01,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:01,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:01,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:01,851 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844140435] [2019-10-13 21:11:01,851 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:01,852 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:01,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28879620] [2019-10-13 21:11:01,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:01,853 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:01,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:01,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:01,853 INFO L87 Difference]: Start difference. First operand 650 states and 1027 transitions. Second operand 4 states. [2019-10-13 21:11:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:01,914 INFO L93 Difference]: Finished difference Result 1263 states and 2014 transitions. [2019-10-13 21:11:01,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:01,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-13 21:11:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:01,921 INFO L225 Difference]: With dead ends: 1263 [2019-10-13 21:11:01,921 INFO L226 Difference]: Without dead ends: 650 [2019-10-13 21:11:01,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-13 21:11:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-10-13 21:11:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-10-13 21:11:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1026 transitions. [2019-10-13 21:11:01,953 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1026 transitions. Word has length 90 [2019-10-13 21:11:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:01,953 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1026 transitions. [2019-10-13 21:11:01,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1026 transitions. [2019-10-13 21:11:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-13 21:11:01,955 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:01,956 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:01,956 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:01,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:01,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1623031804, now seen corresponding path program 1 times [2019-10-13 21:11:01,957 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:01,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064851655] [2019-10-13 21:11:01,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:01,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:01,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:02,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064851655] [2019-10-13 21:11:02,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:02,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:02,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477031395] [2019-10-13 21:11:02,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:02,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:02,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:02,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:02,077 INFO L87 Difference]: Start difference. First operand 650 states and 1026 transitions. Second operand 4 states. [2019-10-13 21:11:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:02,153 INFO L93 Difference]: Finished difference Result 1263 states and 2013 transitions. [2019-10-13 21:11:02,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:02,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-13 21:11:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:02,161 INFO L225 Difference]: With dead ends: 1263 [2019-10-13 21:11:02,161 INFO L226 Difference]: Without dead ends: 650 [2019-10-13 21:11:02,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2019-10-13 21:11:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 650. [2019-10-13 21:11:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2019-10-13 21:11:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1025 transitions. [2019-10-13 21:11:02,189 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1025 transitions. Word has length 91 [2019-10-13 21:11:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:02,190 INFO L462 AbstractCegarLoop]: Abstraction has 650 states and 1025 transitions. [2019-10-13 21:11:02,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1025 transitions. [2019-10-13 21:11:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 21:11:02,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:02,195 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:02,196 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:02,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1591560576, now seen corresponding path program 1 times [2019-10-13 21:11:02,196 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:02,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104599881] [2019-10-13 21:11:02,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:02,197 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:02,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:02,478 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104599881] [2019-10-13 21:11:02,479 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:02,479 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:11:02,479 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760612952] [2019-10-13 21:11:02,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:11:02,480 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:02,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:11:02,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:11:02,480 INFO L87 Difference]: Start difference. First operand 650 states and 1025 transitions. Second operand 10 states. [2019-10-13 21:11:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:02,668 INFO L93 Difference]: Finished difference Result 1221 states and 1933 transitions. [2019-10-13 21:11:02,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:11:02,669 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-10-13 21:11:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:02,674 INFO L225 Difference]: With dead ends: 1221 [2019-10-13 21:11:02,675 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 21:11:02,678 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:11:02,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 21:11:02,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2019-10-13 21:11:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-13 21:11:02,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1034 transitions. [2019-10-13 21:11:02,706 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1034 transitions. Word has length 92 [2019-10-13 21:11:02,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:02,707 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1034 transitions. [2019-10-13 21:11:02,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:11:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1034 transitions. [2019-10-13 21:11:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 21:11:02,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:02,710 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:02,710 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:02,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:02,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1571223201, now seen corresponding path program 1 times [2019-10-13 21:11:02,710 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:02,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010971824] [2019-10-13 21:11:02,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:02,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:02,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:02,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010971824] [2019-10-13 21:11:02,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:02,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:02,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288586683] [2019-10-13 21:11:02,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:02,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:02,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:02,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:02,822 INFO L87 Difference]: Start difference. First operand 657 states and 1034 transitions. Second operand 4 states. [2019-10-13 21:11:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:02,879 INFO L93 Difference]: Finished difference Result 1269 states and 2019 transitions. [2019-10-13 21:11:02,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:02,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-13 21:11:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:02,885 INFO L225 Difference]: With dead ends: 1269 [2019-10-13 21:11:02,885 INFO L226 Difference]: Without dead ends: 644 [2019-10-13 21:11:02,888 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-13 21:11:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-10-13 21:11:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-10-13 21:11:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1011 transitions. [2019-10-13 21:11:02,911 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1011 transitions. Word has length 92 [2019-10-13 21:11:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:02,912 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 1011 transitions. [2019-10-13 21:11:02,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:02,912 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1011 transitions. [2019-10-13 21:11:02,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 21:11:02,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:02,914 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:02,914 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:02,914 INFO L82 PathProgramCache]: Analyzing trace with hash -120264268, now seen corresponding path program 1 times [2019-10-13 21:11:02,914 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:02,915 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361270516] [2019-10-13 21:11:02,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:02,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:02,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:03,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361270516] [2019-10-13 21:11:03,050 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:03,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:03,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834634105] [2019-10-13 21:11:03,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:03,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:03,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:03,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:03,052 INFO L87 Difference]: Start difference. First operand 644 states and 1011 transitions. Second operand 6 states. [2019-10-13 21:11:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:03,276 INFO L93 Difference]: Finished difference Result 1209 states and 1911 transitions. [2019-10-13 21:11:03,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:03,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-10-13 21:11:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:03,282 INFO L225 Difference]: With dead ends: 1209 [2019-10-13 21:11:03,282 INFO L226 Difference]: Without dead ends: 644 [2019-10-13 21:11:03,286 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-13 21:11:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-10-13 21:11:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-10-13 21:11:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1007 transitions. [2019-10-13 21:11:03,310 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1007 transitions. Word has length 93 [2019-10-13 21:11:03,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:03,310 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 1007 transitions. [2019-10-13 21:11:03,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:03,310 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1007 transitions. [2019-10-13 21:11:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:11:03,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:03,312 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:03,312 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:03,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1667290269, now seen corresponding path program 1 times [2019-10-13 21:11:03,313 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:03,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194701155] [2019-10-13 21:11:03,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:03,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:03,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:03,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194701155] [2019-10-13 21:11:03,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:03,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:03,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019609855] [2019-10-13 21:11:03,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:03,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:03,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:03,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:03,506 INFO L87 Difference]: Start difference. First operand 644 states and 1007 transitions. Second operand 6 states. [2019-10-13 21:11:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:03,705 INFO L93 Difference]: Finished difference Result 1209 states and 1907 transitions. [2019-10-13 21:11:03,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:03,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-10-13 21:11:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:03,711 INFO L225 Difference]: With dead ends: 1209 [2019-10-13 21:11:03,712 INFO L226 Difference]: Without dead ends: 644 [2019-10-13 21:11:03,715 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-13 21:11:03,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-10-13 21:11:03,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-10-13 21:11:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1003 transitions. [2019-10-13 21:11:03,738 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1003 transitions. Word has length 94 [2019-10-13 21:11:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:03,739 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 1003 transitions. [2019-10-13 21:11:03,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1003 transitions. [2019-10-13 21:11:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:11:03,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:03,741 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:03,741 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:03,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:03,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1875714457, now seen corresponding path program 1 times [2019-10-13 21:11:03,742 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:03,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679687266] [2019-10-13 21:11:03,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:03,743 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:03,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:03,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679687266] [2019-10-13 21:11:03,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:03,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:03,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342495240] [2019-10-13 21:11:03,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:03,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:03,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:03,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:03,878 INFO L87 Difference]: Start difference. First operand 644 states and 1003 transitions. Second operand 6 states. [2019-10-13 21:11:04,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:04,087 INFO L93 Difference]: Finished difference Result 1209 states and 1903 transitions. [2019-10-13 21:11:04,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:04,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-13 21:11:04,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:04,093 INFO L225 Difference]: With dead ends: 1209 [2019-10-13 21:11:04,093 INFO L226 Difference]: Without dead ends: 644 [2019-10-13 21:11:04,096 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-13 21:11:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-10-13 21:11:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-10-13 21:11:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 999 transitions. [2019-10-13 21:11:04,117 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 999 transitions. Word has length 95 [2019-10-13 21:11:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:04,117 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 999 transitions. [2019-10-13 21:11:04,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 999 transitions. [2019-10-13 21:11:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:11:04,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:04,119 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:04,120 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:04,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1371398631, now seen corresponding path program 1 times [2019-10-13 21:11:04,120 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:04,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91415328] [2019-10-13 21:11:04,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,121 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:04,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91415328] [2019-10-13 21:11:04,239 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:04,239 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:04,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876154088] [2019-10-13 21:11:04,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:04,240 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:04,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:04,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:04,241 INFO L87 Difference]: Start difference. First operand 644 states and 999 transitions. Second operand 7 states. [2019-10-13 21:11:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:04,321 INFO L93 Difference]: Finished difference Result 1209 states and 1899 transitions. [2019-10-13 21:11:04,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:04,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-13 21:11:04,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:04,328 INFO L225 Difference]: With dead ends: 1209 [2019-10-13 21:11:04,328 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:11:04,332 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:04,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:11:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-13 21:11:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 21:11:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 965 transitions. [2019-10-13 21:11:04,359 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 965 transitions. Word has length 95 [2019-10-13 21:11:04,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:04,360 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 965 transitions. [2019-10-13 21:11:04,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 965 transitions. [2019-10-13 21:11:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:11:04,362 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:04,362 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:04,362 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:04,363 INFO L82 PathProgramCache]: Analyzing trace with hash 914472, now seen corresponding path program 1 times [2019-10-13 21:11:04,363 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:04,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320867774] [2019-10-13 21:11:04,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:04,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320867774] [2019-10-13 21:11:04,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:04,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:04,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090345359] [2019-10-13 21:11:04,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:04,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:04,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:04,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:04,541 INFO L87 Difference]: Start difference. First operand 623 states and 965 transitions. Second operand 6 states. [2019-10-13 21:11:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:04,637 INFO L93 Difference]: Finished difference Result 1188 states and 1865 transitions. [2019-10-13 21:11:04,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:04,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-13 21:11:04,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:04,642 INFO L225 Difference]: With dead ends: 1188 [2019-10-13 21:11:04,643 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:11:04,646 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:11:04,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-13 21:11:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 21:11:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 964 transitions. [2019-10-13 21:11:04,666 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 964 transitions. Word has length 96 [2019-10-13 21:11:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:04,666 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 964 transitions. [2019-10-13 21:11:04,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 964 transitions. [2019-10-13 21:11:04,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:11:04,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:04,668 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:04,669 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:04,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:04,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1972860286, now seen corresponding path program 1 times [2019-10-13 21:11:04,669 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:04,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090886794] [2019-10-13 21:11:04,670 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,670 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:04,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090886794] [2019-10-13 21:11:04,806 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:04,806 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:04,806 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226975000] [2019-10-13 21:11:04,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:04,807 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:04,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:04,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:04,808 INFO L87 Difference]: Start difference. First operand 623 states and 964 transitions. Second operand 6 states. [2019-10-13 21:11:04,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:04,907 INFO L93 Difference]: Finished difference Result 1188 states and 1864 transitions. [2019-10-13 21:11:04,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:04,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-13 21:11:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:04,914 INFO L225 Difference]: With dead ends: 1188 [2019-10-13 21:11:04,914 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:11:04,918 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:11:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-13 21:11:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 21:11:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 963 transitions. [2019-10-13 21:11:04,941 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 963 transitions. Word has length 97 [2019-10-13 21:11:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:04,942 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 963 transitions. [2019-10-13 21:11:04,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 963 transitions. [2019-10-13 21:11:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 21:11:04,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:04,944 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:04,945 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1360125715, now seen corresponding path program 1 times [2019-10-13 21:11:04,945 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:04,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192566064] [2019-10-13 21:11:04,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:05,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192566064] [2019-10-13 21:11:05,119 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:05,120 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:11:05,120 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248685810] [2019-10-13 21:11:05,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:11:05,121 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:05,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:11:05,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:05,121 INFO L87 Difference]: Start difference. First operand 623 states and 963 transitions. Second operand 12 states. [2019-10-13 21:11:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:05,302 INFO L93 Difference]: Finished difference Result 1189 states and 1863 transitions. [2019-10-13 21:11:05,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:11:05,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-10-13 21:11:05,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:05,308 INFO L225 Difference]: With dead ends: 1189 [2019-10-13 21:11:05,308 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:11:05,312 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 [2019-10-13 21:11:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:11:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-13 21:11:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 21:11:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 962 transitions. [2019-10-13 21:11:05,334 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 962 transitions. Word has length 98 [2019-10-13 21:11:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:05,335 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 962 transitions. [2019-10-13 21:11:05,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:11:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 962 transitions. [2019-10-13 21:11:05,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:11:05,336 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:05,337 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:05,337 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:05,337 INFO L82 PathProgramCache]: Analyzing trace with hash 372702175, now seen corresponding path program 1 times [2019-10-13 21:11:05,338 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:05,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210184861] [2019-10-13 21:11:05,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:11:05,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210184861] [2019-10-13 21:11:05,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:05,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:05,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091316537] [2019-10-13 21:11:05,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:05,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:05,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:05,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:05,565 INFO L87 Difference]: Start difference. First operand 623 states and 962 transitions. Second operand 6 states. [2019-10-13 21:11:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:09,676 INFO L93 Difference]: Finished difference Result 1847 states and 2936 transitions. [2019-10-13 21:11:09,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:09,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-13 21:11:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:09,688 INFO L225 Difference]: With dead ends: 1847 [2019-10-13 21:11:09,689 INFO L226 Difference]: Without dead ends: 1290 [2019-10-13 21:11:09,693 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2019-10-13 21:11:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1165. [2019-10-13 21:11:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2019-10-13 21:11:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1844 transitions. [2019-10-13 21:11:09,752 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1844 transitions. Word has length 99 [2019-10-13 21:11:09,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:09,752 INFO L462 AbstractCegarLoop]: Abstraction has 1165 states and 1844 transitions. [2019-10-13 21:11:09,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1844 transitions. [2019-10-13 21:11:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:11:09,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:09,758 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:09,759 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:09,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1417866634, now seen corresponding path program 1 times [2019-10-13 21:11:09,759 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:09,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012229624] [2019-10-13 21:11:09,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:09,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:09,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:09,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012229624] [2019-10-13 21:11:09,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788327383] [2019-10-13 21:11:09,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:10,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:11:10,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:10,869 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:11,872 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:11:11,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-13 21:11:11,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410480586] [2019-10-13 21:11:11,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:11,874 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:11,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:11:11,875 INFO L87 Difference]: Start difference. First operand 1165 states and 1844 transitions. Second operand 5 states. [2019-10-13 21:11:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:12,941 INFO L93 Difference]: Finished difference Result 2280 states and 3703 transitions. [2019-10-13 21:11:12,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:12,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-13 21:11:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:12,955 INFO L225 Difference]: With dead ends: 2280 [2019-10-13 21:11:12,955 INFO L226 Difference]: Without dead ends: 1181 [2019-10-13 21:11:12,963 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 302 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:11:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2019-10-13 21:11:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2019-10-13 21:11:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2019-10-13 21:11:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1870 transitions. [2019-10-13 21:11:13,028 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1870 transitions. Word has length 158 [2019-10-13 21:11:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:13,029 INFO L462 AbstractCegarLoop]: Abstraction has 1181 states and 1870 transitions. [2019-10-13 21:11:13,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1870 transitions. [2019-10-13 21:11:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:11:13,035 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:13,035 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:13,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:13,246 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1476873735, now seen corresponding path program 1 times [2019-10-13 21:11:13,247 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:13,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983548369] [2019-10-13 21:11:13,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:13,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:13,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:11:13,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983548369] [2019-10-13 21:11:13,452 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:13,452 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:11:13,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8708765] [2019-10-13 21:11:13,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:11:13,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:13,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:11:13,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:13,454 INFO L87 Difference]: Start difference. First operand 1181 states and 1870 transitions. Second operand 12 states. [2019-10-13 21:11:24,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:24,959 INFO L93 Difference]: Finished difference Result 3914 states and 6204 transitions. [2019-10-13 21:11:24,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:11:24,960 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2019-10-13 21:11:24,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:24,976 INFO L225 Difference]: With dead ends: 3914 [2019-10-13 21:11:24,976 INFO L226 Difference]: Without dead ends: 2799 [2019-10-13 21:11:24,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:11:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2019-10-13 21:11:25,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2741. [2019-10-13 21:11:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2741 states. [2019-10-13 21:11:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4299 transitions. [2019-10-13 21:11:25,135 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4299 transitions. Word has length 159 [2019-10-13 21:11:25,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:25,136 INFO L462 AbstractCegarLoop]: Abstraction has 2741 states and 4299 transitions. [2019-10-13 21:11:25,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:11:25,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4299 transitions. [2019-10-13 21:11:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 21:11:25,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:25,143 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:25,143 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:25,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1813348040, now seen corresponding path program 1 times [2019-10-13 21:11:25,144 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:25,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254030314] [2019-10-13 21:11:25,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:25,145 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:25,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:25,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254030314] [2019-10-13 21:11:25,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628632325] [2019-10-13 21:11:25,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:25,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:11:25,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:25,971 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:11:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:26,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:11:26,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-13 21:11:26,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289291364] [2019-10-13 21:11:26,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:26,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:26,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:26,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:11:26,847 INFO L87 Difference]: Start difference. First operand 2741 states and 4299 transitions. Second operand 5 states. [2019-10-13 21:11:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:27,819 INFO L93 Difference]: Finished difference Result 5480 states and 8805 transitions. [2019-10-13 21:11:27,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:27,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2019-10-13 21:11:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:27,834 INFO L225 Difference]: With dead ends: 5480 [2019-10-13 21:11:27,834 INFO L226 Difference]: Without dead ends: 2805 [2019-10-13 21:11:27,851 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 306 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:11:27,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2019-10-13 21:11:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2805. [2019-10-13 21:11:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2019-10-13 21:11:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4401 transitions. [2019-10-13 21:11:27,975 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4401 transitions. Word has length 160 [2019-10-13 21:11:27,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:27,976 INFO L462 AbstractCegarLoop]: Abstraction has 2805 states and 4401 transitions. [2019-10-13 21:11:27,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4401 transitions. [2019-10-13 21:11:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:11:27,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:27,982 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:11:28,189 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:28,189 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:28,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1353207926, now seen corresponding path program 1 times [2019-10-13 21:11:28,190 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:28,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815421015] [2019-10-13 21:11:28,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:28,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:28,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:28,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815421015] [2019-10-13 21:11:28,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905182058] [2019-10-13 21:11:28,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:11:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:28,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:11:28,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:11:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 21:11:29,018 INFO L321 TraceCheckSpWp]: Computing backward predicates...