/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:42:09,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:42:09,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:42:09,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:42:09,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:42:09,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:42:09,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:42:09,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:42:10,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:42:10,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:42:10,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:42:10,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:42:10,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:42:10,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:42:10,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:42:10,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:42:10,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:42:10,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:42:10,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:42:10,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:42:10,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:42:10,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:42:10,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:42:10,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:42:10,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:42:10,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:42:10,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:42:10,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:42:10,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:42:10,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:42:10,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:42:10,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:42:10,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:42:10,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:42:10,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:42:10,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:42:10,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:42:10,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:42:10,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:42:10,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:42:10,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:42:10,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:42:10,049 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:42:10,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:42:10,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:42:10,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:42:10,051 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:42:10,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:42:10,052 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:42:10,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:42:10,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:42:10,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:42:10,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:42:10,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:42:10,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:42:10,053 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:42:10,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:42:10,053 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:42:10,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:42:10,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:42:10,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:42:10,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:42:10,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:42:10,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:42:10,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:42:10,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:42:10,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:42:10,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:42:10,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:42:10,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:42:10,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:42:10,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:42:10,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:42:10,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:42:10,374 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:42:10,374 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:42:10,375 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2019-11-07 00:42:10,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d79c7fdf7/88b76473ad0640568676624f1fdfd6d3/FLAG7337c1394 [2019-11-07 00:42:11,121 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:42:11,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2019-11-07 00:42:11,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d79c7fdf7/88b76473ad0640568676624f1fdfd6d3/FLAG7337c1394 [2019-11-07 00:42:11,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d79c7fdf7/88b76473ad0640568676624f1fdfd6d3 [2019-11-07 00:42:11,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:42:11,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:42:11,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:42:11,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:42:11,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:42:11,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:11" (1/1) ... [2019-11-07 00:42:11,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56069b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:11, skipping insertion in model container [2019-11-07 00:42:11,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:11" (1/1) ... [2019-11-07 00:42:11,284 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:42:11,369 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:42:12,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:42:12,046 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:42:12,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:42:12,317 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:42:12,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12 WrapperNode [2019-11-07 00:42:12,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:42:12,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:42:12,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:42:12,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:42:12,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12" (1/1) ... [2019-11-07 00:42:12,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12" (1/1) ... [2019-11-07 00:42:12,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12" (1/1) ... [2019-11-07 00:42:12,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12" (1/1) ... [2019-11-07 00:42:12,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12" (1/1) ... [2019-11-07 00:42:12,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12" (1/1) ... [2019-11-07 00:42:12,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12" (1/1) ... [2019-11-07 00:42:12,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:42:12,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:42:12,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:42:12,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:42:12,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:42:12,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:42:12,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:42:12,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:42:12,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:42:12,618 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 00:42:12,618 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 00:42:12,618 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 00:42:12,618 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 00:42:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 00:42:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 00:42:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 00:42:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 00:42:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 00:42:12,620 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 00:42:12,620 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 00:42:12,620 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 00:42:12,620 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 00:42:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 00:42:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:42:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 00:42:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:42:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 00:42:12,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 00:42:12,623 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 00:42:12,623 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 00:42:12,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 00:42:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 00:42:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 00:42:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 00:42:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:42:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:42:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:42:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:42:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:42:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:42:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:42:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 00:42:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 00:42:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 00:42:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:42:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:42:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:42:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:42:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 00:42:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 00:42:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 00:42:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-11-07 00:42:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 00:42:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 00:42:12,629 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 00:42:12,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 00:42:12,629 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 00:42:12,629 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 00:42:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 00:42:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 00:42:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 00:42:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 00:42:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 00:42:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 00:42:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:42:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 00:42:12,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 00:42:12,632 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 00:42:12,632 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:42:12,633 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 00:42:12,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 00:42:12,633 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 00:42:12,633 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-11-07 00:42:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 00:42:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-11-07 00:42:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 00:42:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 00:42:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 00:42:12,636 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 00:42:12,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:42:12,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:42:12,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:42:12,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:42:12,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:42:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:42:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:42:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:42:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 00:42:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 00:42:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 00:42:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 00:42:12,641 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 00:42:12,641 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 00:42:12,641 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 00:42:12,642 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 00:42:12,642 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 00:42:12,642 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 00:42:12,642 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 00:42:12,642 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 00:42:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 00:42:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 00:42:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 00:42:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 00:42:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 00:42:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 00:42:12,644 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 00:42:12,644 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 00:42:12,644 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 00:42:12,644 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:42:12,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 00:42:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 00:42:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:42:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 00:42:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:42:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:42:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:42:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:42:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 00:42:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 00:42:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 00:42:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 00:42:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 00:42:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 00:42:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 00:42:12,648 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:42:12,648 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:42:12,648 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:42:12,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:42:12,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:42:12,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:42:12,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:42:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:42:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:42:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:42:12,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:42:12,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:42:12,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:42:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:42:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:42:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:42:12,653 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:42:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 00:42:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 00:42:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:42:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:42:12,659 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 00:42:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 00:42:12,660 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 00:42:12,661 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 00:42:12,670 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 00:42:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 00:42:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 00:42:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-11-07 00:42:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 00:42:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 00:42:12,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 00:42:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 00:42:12,672 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 00:42:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 00:42:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 00:42:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-11-07 00:42:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 00:42:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 00:42:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-11-07 00:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 00:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 00:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 00:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-11-07 00:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 00:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-11-07 00:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 00:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 00:42:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 00:42:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:42:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:42:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:42:15,204 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:42:15,205 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 00:42:15,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:42:15 BoogieIcfgContainer [2019-11-07 00:42:15,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:42:15,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:42:15,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:42:15,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:42:15,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:42:11" (1/3) ... [2019-11-07 00:42:15,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e35cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:42:15, skipping insertion in model container [2019-11-07 00:42:15,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:12" (2/3) ... [2019-11-07 00:42:15,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e35cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:42:15, skipping insertion in model container [2019-11-07 00:42:15,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:42:15" (3/3) ... [2019-11-07 00:42:15,215 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2019-11-07 00:42:15,226 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:42:15,236 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:42:15,250 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:42:15,283 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:42:15,283 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:42:15,283 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:42:15,283 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:42:15,284 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:42:15,284 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:42:15,284 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:42:15,284 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:42:15,320 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states. [2019-11-07 00:42:15,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-07 00:42:15,334 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:15,335 INFO L410 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] [2019-11-07 00:42:15,338 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:15,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1360016176, now seen corresponding path program 1 times [2019-11-07 00:42:15,356 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:15,356 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870981390] [2019-11-07 00:42:15,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:15,951 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870981390] [2019-11-07 00:42:15,952 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:15,952 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:15,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520001131] [2019-11-07 00:42:15,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:15,960 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:15,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:15,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:15,978 INFO L87 Difference]: Start difference. First operand 789 states. Second operand 4 states. [2019-11-07 00:42:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:16,207 INFO L93 Difference]: Finished difference Result 1227 states and 1983 transitions. [2019-11-07 00:42:16,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:16,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2019-11-07 00:42:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:16,242 INFO L225 Difference]: With dead ends: 1227 [2019-11-07 00:42:16,242 INFO L226 Difference]: Without dead ends: 622 [2019-11-07 00:42:16,255 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:42:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-11-07 00:42:16,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-11-07 00:42:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-11-07 00:42:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 993 transitions. [2019-11-07 00:42:16,369 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 993 transitions. Word has length 85 [2019-11-07 00:42:16,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:16,370 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 993 transitions. [2019-11-07 00:42:16,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:16,370 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 993 transitions. [2019-11-07 00:42:16,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-07 00:42:16,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:16,376 INFO L410 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] [2019-11-07 00:42:16,377 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:16,377 INFO L82 PathProgramCache]: Analyzing trace with hash 372991960, now seen corresponding path program 1 times [2019-11-07 00:42:16,378 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:16,378 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928416217] [2019-11-07 00:42:16,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:16,526 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928416217] [2019-11-07 00:42:16,526 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:16,527 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:16,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706036277] [2019-11-07 00:42:16,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:16,538 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:16,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:16,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:16,539 INFO L87 Difference]: Start difference. First operand 622 states and 993 transitions. Second operand 4 states. [2019-11-07 00:42:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:16,650 INFO L93 Difference]: Finished difference Result 1207 states and 1944 transitions. [2019-11-07 00:42:16,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:16,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-11-07 00:42:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:16,658 INFO L225 Difference]: With dead ends: 1207 [2019-11-07 00:42:16,659 INFO L226 Difference]: Without dead ends: 622 [2019-11-07 00:42:16,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:42:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-11-07 00:42:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-11-07 00:42:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-11-07 00:42:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 992 transitions. [2019-11-07 00:42:16,704 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 992 transitions. Word has length 88 [2019-11-07 00:42:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:16,704 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 992 transitions. [2019-11-07 00:42:16,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 992 transitions. [2019-11-07 00:42:16,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-07 00:42:16,709 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:16,709 INFO L410 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] [2019-11-07 00:42:16,709 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:16,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:16,710 INFO L82 PathProgramCache]: Analyzing trace with hash -155745473, now seen corresponding path program 1 times [2019-11-07 00:42:16,710 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:16,710 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272975632] [2019-11-07 00:42:16,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:16,947 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272975632] [2019-11-07 00:42:16,947 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:16,947 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:16,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505593031] [2019-11-07 00:42:16,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:16,948 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:16,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:16,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:16,949 INFO L87 Difference]: Start difference. First operand 622 states and 992 transitions. Second operand 4 states. [2019-11-07 00:42:17,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:17,043 INFO L93 Difference]: Finished difference Result 1207 states and 1943 transitions. [2019-11-07 00:42:17,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:17,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-11-07 00:42:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:17,062 INFO L225 Difference]: With dead ends: 1207 [2019-11-07 00:42:17,063 INFO L226 Difference]: Without dead ends: 622 [2019-11-07 00:42:17,067 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:42:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-11-07 00:42:17,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-11-07 00:42:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-11-07 00:42:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 991 transitions. [2019-11-07 00:42:17,111 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 991 transitions. Word has length 89 [2019-11-07 00:42:17,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:17,112 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 991 transitions. [2019-11-07 00:42:17,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 991 transitions. [2019-11-07 00:42:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-07 00:42:17,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:17,114 INFO L410 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] [2019-11-07 00:42:17,114 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:17,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:17,115 INFO L82 PathProgramCache]: Analyzing trace with hash 714612788, now seen corresponding path program 1 times [2019-11-07 00:42:17,115 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:17,115 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749815383] [2019-11-07 00:42:17,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:17,278 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749815383] [2019-11-07 00:42:17,278 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:17,278 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:17,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008124154] [2019-11-07 00:42:17,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:17,279 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:17,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:17,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:17,280 INFO L87 Difference]: Start difference. First operand 622 states and 991 transitions. Second operand 4 states. [2019-11-07 00:42:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:17,339 INFO L93 Difference]: Finished difference Result 1207 states and 1942 transitions. [2019-11-07 00:42:17,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:17,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-11-07 00:42:17,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:17,346 INFO L225 Difference]: With dead ends: 1207 [2019-11-07 00:42:17,346 INFO L226 Difference]: Without dead ends: 622 [2019-11-07 00:42:17,349 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:42:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-11-07 00:42:17,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-11-07 00:42:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-11-07 00:42:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 990 transitions. [2019-11-07 00:42:17,374 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 990 transitions. Word has length 90 [2019-11-07 00:42:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:17,375 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 990 transitions. [2019-11-07 00:42:17,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:17,375 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 990 transitions. [2019-11-07 00:42:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-07 00:42:17,377 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:17,377 INFO L410 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] [2019-11-07 00:42:17,377 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:17,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:17,378 INFO L82 PathProgramCache]: Analyzing trace with hash 2007264603, now seen corresponding path program 1 times [2019-11-07 00:42:17,378 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:17,378 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087599387] [2019-11-07 00:42:17,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:17,510 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087599387] [2019-11-07 00:42:17,511 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:17,511 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:17,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377414244] [2019-11-07 00:42:17,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:17,512 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:17,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:17,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:17,513 INFO L87 Difference]: Start difference. First operand 622 states and 990 transitions. Second operand 4 states. [2019-11-07 00:42:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:17,583 INFO L93 Difference]: Finished difference Result 1207 states and 1941 transitions. [2019-11-07 00:42:17,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:17,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-11-07 00:42:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:17,590 INFO L225 Difference]: With dead ends: 1207 [2019-11-07 00:42:17,591 INFO L226 Difference]: Without dead ends: 622 [2019-11-07 00:42:17,594 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:42:17,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-11-07 00:42:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-11-07 00:42:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-11-07 00:42:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 989 transitions. [2019-11-07 00:42:17,625 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 989 transitions. Word has length 91 [2019-11-07 00:42:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:17,626 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 989 transitions. [2019-11-07 00:42:17,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 989 transitions. [2019-11-07 00:42:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:42:17,672 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:17,672 INFO L410 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] [2019-11-07 00:42:17,673 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:17,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:17,673 INFO L82 PathProgramCache]: Analyzing trace with hash -788852592, now seen corresponding path program 1 times [2019-11-07 00:42:17,673 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:17,674 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588491656] [2019-11-07 00:42:17,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:17,865 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588491656] [2019-11-07 00:42:17,866 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:17,866 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:42:17,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141943869] [2019-11-07 00:42:17,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:42:17,867 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:17,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:42:17,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:42:17,868 INFO L87 Difference]: Start difference. First operand 622 states and 989 transitions. Second operand 10 states. [2019-11-07 00:42:18,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:18,090 INFO L93 Difference]: Finished difference Result 1165 states and 1861 transitions. [2019-11-07 00:42:18,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:42:18,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-11-07 00:42:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:18,097 INFO L225 Difference]: With dead ends: 1165 [2019-11-07 00:42:18,097 INFO L226 Difference]: Without dead ends: 631 [2019-11-07 00:42:18,101 INFO L630 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 [2019-11-07 00:42:18,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-11-07 00:42:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 629. [2019-11-07 00:42:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-07 00:42:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 998 transitions. [2019-11-07 00:42:18,136 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 998 transitions. Word has length 92 [2019-11-07 00:42:18,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:18,137 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 998 transitions. [2019-11-07 00:42:18,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:42:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 998 transitions. [2019-11-07 00:42:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-07 00:42:18,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:18,140 INFO L410 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] [2019-11-07 00:42:18,140 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:18,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:18,140 INFO L82 PathProgramCache]: Analyzing trace with hash -768515217, now seen corresponding path program 1 times [2019-11-07 00:42:18,141 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:18,141 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509913975] [2019-11-07 00:42:18,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:18,251 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509913975] [2019-11-07 00:42:18,251 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:18,252 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:42:18,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243687421] [2019-11-07 00:42:18,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:42:18,253 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:18,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:42:18,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:42:18,254 INFO L87 Difference]: Start difference. First operand 629 states and 998 transitions. Second operand 4 states. [2019-11-07 00:42:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:18,310 INFO L93 Difference]: Finished difference Result 1213 states and 1947 transitions. [2019-11-07 00:42:18,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:42:18,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-11-07 00:42:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:18,317 INFO L225 Difference]: With dead ends: 1213 [2019-11-07 00:42:18,317 INFO L226 Difference]: Without dead ends: 616 [2019-11-07 00:42:18,322 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:42:18,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-11-07 00:42:18,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-11-07 00:42:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-11-07 00:42:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 975 transitions. [2019-11-07 00:42:18,347 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 975 transitions. Word has length 92 [2019-11-07 00:42:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:18,348 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 975 transitions. [2019-11-07 00:42:18,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:42:18,348 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 975 transitions. [2019-11-07 00:42:18,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-07 00:42:18,351 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:18,351 INFO L410 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] [2019-11-07 00:42:18,352 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:18,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1799545833, now seen corresponding path program 1 times [2019-11-07 00:42:18,352 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:18,353 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636090859] [2019-11-07 00:42:18,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:18,536 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636090859] [2019-11-07 00:42:18,536 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:18,537 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:18,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798719066] [2019-11-07 00:42:18,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:18,538 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:18,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:18,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:18,538 INFO L87 Difference]: Start difference. First operand 616 states and 975 transitions. Second operand 6 states. [2019-11-07 00:42:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:18,751 INFO L93 Difference]: Finished difference Result 1153 states and 1839 transitions. [2019-11-07 00:42:18,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:18,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-11-07 00:42:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:18,757 INFO L225 Difference]: With dead ends: 1153 [2019-11-07 00:42:18,757 INFO L226 Difference]: Without dead ends: 616 [2019-11-07 00:42:18,760 INFO L630 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 [2019-11-07 00:42:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-11-07 00:42:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-11-07 00:42:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-11-07 00:42:18,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 971 transitions. [2019-11-07 00:42:18,783 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 971 transitions. Word has length 93 [2019-11-07 00:42:18,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:18,785 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 971 transitions. [2019-11-07 00:42:18,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 971 transitions. [2019-11-07 00:42:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-11-07 00:42:18,790 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:18,791 INFO L410 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] [2019-11-07 00:42:18,791 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:18,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:18,791 INFO L82 PathProgramCache]: Analyzing trace with hash 522947091, now seen corresponding path program 1 times [2019-11-07 00:42:18,792 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:18,792 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567733505] [2019-11-07 00:42:18,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:18,941 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567733505] [2019-11-07 00:42:18,942 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:18,942 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:18,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022426383] [2019-11-07 00:42:18,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:18,944 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:18,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:18,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:18,945 INFO L87 Difference]: Start difference. First operand 616 states and 971 transitions. Second operand 6 states. [2019-11-07 00:42:19,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:19,188 INFO L93 Difference]: Finished difference Result 1153 states and 1835 transitions. [2019-11-07 00:42:19,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:19,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-11-07 00:42:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:19,193 INFO L225 Difference]: With dead ends: 1153 [2019-11-07 00:42:19,193 INFO L226 Difference]: Without dead ends: 616 [2019-11-07 00:42:19,196 INFO L630 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 [2019-11-07 00:42:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-11-07 00:42:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-11-07 00:42:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-11-07 00:42:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 967 transitions. [2019-11-07 00:42:19,221 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 967 transitions. Word has length 94 [2019-11-07 00:42:19,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:19,222 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 967 transitions. [2019-11-07 00:42:19,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 967 transitions. [2019-11-07 00:42:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:42:19,224 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:19,224 INFO L410 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] [2019-11-07 00:42:19,225 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:19,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:19,225 INFO L82 PathProgramCache]: Analyzing trace with hash -435705042, now seen corresponding path program 1 times [2019-11-07 00:42:19,225 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:19,225 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597954641] [2019-11-07 00:42:19,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:19,365 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597954641] [2019-11-07 00:42:19,366 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:19,366 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:19,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179327048] [2019-11-07 00:42:19,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:19,367 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:19,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:19,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:19,368 INFO L87 Difference]: Start difference. First operand 616 states and 967 transitions. Second operand 6 states. [2019-11-07 00:42:19,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:19,648 INFO L93 Difference]: Finished difference Result 1153 states and 1831 transitions. [2019-11-07 00:42:19,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:19,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-11-07 00:42:19,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:19,655 INFO L225 Difference]: With dead ends: 1153 [2019-11-07 00:42:19,655 INFO L226 Difference]: Without dead ends: 616 [2019-11-07 00:42:19,667 INFO L630 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 [2019-11-07 00:42:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-11-07 00:42:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-11-07 00:42:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-11-07 00:42:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 963 transitions. [2019-11-07 00:42:19,699 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 963 transitions. Word has length 95 [2019-11-07 00:42:19,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:19,699 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 963 transitions. [2019-11-07 00:42:19,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 963 transitions. [2019-11-07 00:42:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-07 00:42:19,701 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:19,701 INFO L410 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] [2019-11-07 00:42:19,702 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:19,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:19,702 INFO L82 PathProgramCache]: Analyzing trace with hash 612149166, now seen corresponding path program 1 times [2019-11-07 00:42:19,702 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:19,702 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842248093] [2019-11-07 00:42:19,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:19,857 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842248093] [2019-11-07 00:42:19,858 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:19,858 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:42:19,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492088428] [2019-11-07 00:42:19,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:42:19,859 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:19,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:42:19,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:42:19,860 INFO L87 Difference]: Start difference. First operand 616 states and 963 transitions. Second operand 7 states. [2019-11-07 00:42:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:19,967 INFO L93 Difference]: Finished difference Result 1153 states and 1827 transitions. [2019-11-07 00:42:19,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:42:19,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-11-07 00:42:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:19,973 INFO L225 Difference]: With dead ends: 1153 [2019-11-07 00:42:19,974 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 00:42:19,977 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:42:19,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 00:42:19,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-11-07 00:42:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 00:42:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 929 transitions. [2019-11-07 00:42:20,003 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 929 transitions. Word has length 95 [2019-11-07 00:42:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:20,004 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 929 transitions. [2019-11-07 00:42:20,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:42:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 929 transitions. [2019-11-07 00:42:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-07 00:42:20,005 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:20,006 INFO L410 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] [2019-11-07 00:42:20,006 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:20,006 INFO L82 PathProgramCache]: Analyzing trace with hash -127946888, now seen corresponding path program 1 times [2019-11-07 00:42:20,007 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:20,007 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278255401] [2019-11-07 00:42:20,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:20,148 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278255401] [2019-11-07 00:42:20,148 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:20,148 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:20,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762519908] [2019-11-07 00:42:20,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:20,150 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:20,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:20,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:20,151 INFO L87 Difference]: Start difference. First operand 595 states and 929 transitions. Second operand 6 states. [2019-11-07 00:42:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:20,277 INFO L93 Difference]: Finished difference Result 1132 states and 1793 transitions. [2019-11-07 00:42:20,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:20,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-11-07 00:42:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:20,282 INFO L225 Difference]: With dead ends: 1132 [2019-11-07 00:42:20,282 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 00:42:20,285 INFO L630 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 [2019-11-07 00:42:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 00:42:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-11-07 00:42:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 00:42:20,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 928 transitions. [2019-11-07 00:42:20,307 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 928 transitions. Word has length 96 [2019-11-07 00:42:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:20,308 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 928 transitions. [2019-11-07 00:42:20,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 928 transitions. [2019-11-07 00:42:20,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-07 00:42:20,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:20,310 INFO L410 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] [2019-11-07 00:42:20,310 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:20,310 INFO L82 PathProgramCache]: Analyzing trace with hash 783824499, now seen corresponding path program 1 times [2019-11-07 00:42:20,311 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:20,311 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860383577] [2019-11-07 00:42:20,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:20,467 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860383577] [2019-11-07 00:42:20,467 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:20,468 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:20,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251804896] [2019-11-07 00:42:20,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:20,469 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:20,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:20,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:20,469 INFO L87 Difference]: Start difference. First operand 595 states and 928 transitions. Second operand 6 states. [2019-11-07 00:42:20,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:20,569 INFO L93 Difference]: Finished difference Result 1132 states and 1792 transitions. [2019-11-07 00:42:20,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:20,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-11-07 00:42:20,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:20,574 INFO L225 Difference]: With dead ends: 1132 [2019-11-07 00:42:20,574 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 00:42:20,577 INFO L630 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 [2019-11-07 00:42:20,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 00:42:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-11-07 00:42:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 00:42:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 927 transitions. [2019-11-07 00:42:20,600 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 927 transitions. Word has length 97 [2019-11-07 00:42:20,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:20,602 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 927 transitions. [2019-11-07 00:42:20,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 927 transitions. [2019-11-07 00:42:20,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-07 00:42:20,604 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:20,604 INFO L410 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] [2019-11-07 00:42:20,604 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:20,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:20,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1054830371, now seen corresponding path program 1 times [2019-11-07 00:42:20,605 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:20,605 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936702829] [2019-11-07 00:42:20,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:20,795 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936702829] [2019-11-07 00:42:20,795 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:20,796 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:42:20,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449262724] [2019-11-07 00:42:20,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:42:20,796 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:20,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:42:20,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:42:20,797 INFO L87 Difference]: Start difference. First operand 595 states and 927 transitions. Second operand 12 states. [2019-11-07 00:42:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:20,971 INFO L93 Difference]: Finished difference Result 1133 states and 1791 transitions. [2019-11-07 00:42:20,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:42:20,972 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-11-07 00:42:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:20,976 INFO L225 Difference]: With dead ends: 1133 [2019-11-07 00:42:20,977 INFO L226 Difference]: Without dead ends: 595 [2019-11-07 00:42:20,980 INFO L630 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 [2019-11-07 00:42:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-11-07 00:42:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-11-07 00:42:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-11-07 00:42:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 926 transitions. [2019-11-07 00:42:21,001 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 926 transitions. Word has length 98 [2019-11-07 00:42:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:21,001 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 926 transitions. [2019-11-07 00:42:21,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:42:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 926 transitions. [2019-11-07 00:42:21,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-11-07 00:42:21,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:21,003 INFO L410 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] [2019-11-07 00:42:21,004 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:21,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:21,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1727482954, now seen corresponding path program 1 times [2019-11-07 00:42:21,004 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:21,005 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210016004] [2019-11-07 00:42:21,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:42:21,152 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210016004] [2019-11-07 00:42:21,153 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:21,153 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:21,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990230146] [2019-11-07 00:42:21,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:21,154 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:21,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:21,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:21,154 INFO L87 Difference]: Start difference. First operand 595 states and 926 transitions. Second operand 6 states. [2019-11-07 00:42:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:24,766 INFO L93 Difference]: Finished difference Result 1763 states and 2828 transitions. [2019-11-07 00:42:24,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:42:24,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-11-07 00:42:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:24,777 INFO L225 Difference]: With dead ends: 1763 [2019-11-07 00:42:24,777 INFO L226 Difference]: Without dead ends: 1234 [2019-11-07 00:42:24,781 INFO L630 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 [2019-11-07 00:42:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2019-11-07 00:42:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1109. [2019-11-07 00:42:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2019-11-07 00:42:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1772 transitions. [2019-11-07 00:42:24,834 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1772 transitions. Word has length 99 [2019-11-07 00:42:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:24,834 INFO L462 AbstractCegarLoop]: Abstraction has 1109 states and 1772 transitions. [2019-11-07 00:42:24,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1772 transitions. [2019-11-07 00:42:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 00:42:24,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:24,840 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:24,840 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:24,841 INFO L82 PathProgramCache]: Analyzing trace with hash 593054676, now seen corresponding path program 1 times [2019-11-07 00:42:24,841 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:24,841 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566570464] [2019-11-07 00:42:24,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:42:25,016 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566570464] [2019-11-07 00:42:25,016 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:25,016 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:25,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582514778] [2019-11-07 00:42:25,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:25,017 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:25,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:25,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:25,018 INFO L87 Difference]: Start difference. First operand 1109 states and 1772 transitions. Second operand 6 states. [2019-11-07 00:42:29,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:29,158 INFO L93 Difference]: Finished difference Result 2873 states and 4702 transitions. [2019-11-07 00:42:29,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:42:29,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2019-11-07 00:42:29,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:29,172 INFO L225 Difference]: With dead ends: 2873 [2019-11-07 00:42:29,172 INFO L226 Difference]: Without dead ends: 1831 [2019-11-07 00:42:29,179 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:42:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2019-11-07 00:42:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1697. [2019-11-07 00:42:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1697 states. [2019-11-07 00:42:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2722 transitions. [2019-11-07 00:42:29,279 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2722 transitions. Word has length 149 [2019-11-07 00:42:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:29,280 INFO L462 AbstractCegarLoop]: Abstraction has 1697 states and 2722 transitions. [2019-11-07 00:42:29,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2722 transitions. [2019-11-07 00:42:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 00:42:29,285 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:29,286 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:29,286 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:29,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2131105979, now seen corresponding path program 1 times [2019-11-07 00:42:29,287 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:29,287 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559851788] [2019-11-07 00:42:29,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:42:29,493 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559851788] [2019-11-07 00:42:29,494 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:29,494 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:42:29,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078543037] [2019-11-07 00:42:29,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:42:29,495 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:29,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:42:29,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:42:29,496 INFO L87 Difference]: Start difference. First operand 1697 states and 2722 transitions. Second operand 12 states. [2019-11-07 00:42:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:40,805 INFO L93 Difference]: Finished difference Result 5461 states and 8753 transitions. [2019-11-07 00:42:40,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:42:40,806 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2019-11-07 00:42:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:40,830 INFO L225 Difference]: With dead ends: 5461 [2019-11-07 00:42:40,830 INFO L226 Difference]: Without dead ends: 3830 [2019-11-07 00:42:40,840 INFO L630 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 [2019-11-07 00:42:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2019-11-07 00:42:41,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3761. [2019-11-07 00:42:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3761 states. [2019-11-07 00:42:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 5956 transitions. [2019-11-07 00:42:41,075 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 5956 transitions. Word has length 149 [2019-11-07 00:42:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:41,076 INFO L462 AbstractCegarLoop]: Abstraction has 3761 states and 5956 transitions. [2019-11-07 00:42:41,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:42:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 5956 transitions. [2019-11-07 00:42:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-07 00:42:41,086 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:41,087 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:41,087 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:41,088 INFO L82 PathProgramCache]: Analyzing trace with hash 386561165, now seen corresponding path program 1 times [2019-11-07 00:42:41,088 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:41,088 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829967238] [2019-11-07 00:42:41,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:42:41,311 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829967238] [2019-11-07 00:42:41,312 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:41,312 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:41,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254914180] [2019-11-07 00:42:41,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:41,313 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:41,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:41,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:41,314 INFO L87 Difference]: Start difference. First operand 3761 states and 5956 transitions. Second operand 6 states. [2019-11-07 00:42:45,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:42:45,653 INFO L93 Difference]: Finished difference Result 10571 states and 17104 transitions. [2019-11-07 00:42:45,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:42:45,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2019-11-07 00:42:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:42:45,690 INFO L225 Difference]: With dead ends: 10571 [2019-11-07 00:42:45,690 INFO L226 Difference]: Without dead ends: 6879 [2019-11-07 00:42:45,708 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:42:45,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6879 states. [2019-11-07 00:42:46,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6879 to 6465. [2019-11-07 00:42:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6465 states. [2019-11-07 00:42:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6465 states to 6465 states and 10238 transitions. [2019-11-07 00:42:46,124 INFO L78 Accepts]: Start accepts. Automaton has 6465 states and 10238 transitions. Word has length 150 [2019-11-07 00:42:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:42:46,125 INFO L462 AbstractCegarLoop]: Abstraction has 6465 states and 10238 transitions. [2019-11-07 00:42:46,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:42:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 6465 states and 10238 transitions. [2019-11-07 00:42:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-07 00:42:46,130 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:42:46,130 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:42:46,131 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:42:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:42:46,131 INFO L82 PathProgramCache]: Analyzing trace with hash -831969032, now seen corresponding path program 1 times [2019-11-07 00:42:46,131 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:42:46,131 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247132736] [2019-11-07 00:42:46,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:42:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:42:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:42:46,309 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247132736] [2019-11-07 00:42:46,309 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:42:46,309 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:42:46,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058721068] [2019-11-07 00:42:46,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:42:46,310 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:42:46,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:42:46,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:42:46,311 INFO L87 Difference]: Start difference. First operand 6465 states and 10238 transitions. Second operand 6 states.