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 0.1.24-13a467a-m [2019-10-15 01:09:53,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:09:53,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:09:53,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:09:53,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:09:53,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:09:53,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:09:53,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:09:53,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:09:53,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:09:53,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:09:53,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:09:53,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:09:53,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:09:53,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:09:53,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:09:53,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:09:53,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:09:53,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:09:53,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:09:53,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:09:53,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:09:53,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:09:53,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:09:53,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:09:53,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:09:53,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:09:53,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:09:53,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:09:53,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:09:53,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:09:53,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:09:53,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:09:53,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:09:53,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:09:53,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:09:53,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:09:53,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:09:53,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:09:53,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:09:53,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:09:53,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:09:53,999 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:09:53,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:09:54,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:09:54,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:09:54,002 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:09:54,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:09:54,003 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:09:54,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:09:54,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:09:54,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:09:54,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:09:54,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:09:54,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:09:54,007 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:09:54,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:09:54,007 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:09:54,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:09:54,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:09:54,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:09:54,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:09:54,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:09:54,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:09:54,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:09:54,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:09:54,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:09:54,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:09:54,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:09:54,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:09:54,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:09:54,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:09:54,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:09:54,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:09:54,311 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:09:54,312 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:09:54,313 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2019-10-15 01:09:54,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c45ba99/f9ab8d8d0fd94af7ba640fe8ff5d591a/FLAG51b1aad4b [2019-10-15 01:09:55,032 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:09:55,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product22.cil.c [2019-10-15 01:09:55,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c45ba99/f9ab8d8d0fd94af7ba640fe8ff5d591a/FLAG51b1aad4b [2019-10-15 01:09:55,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59c45ba99/f9ab8d8d0fd94af7ba640fe8ff5d591a [2019-10-15 01:09:55,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:09:55,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:09:55,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:09:55,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:09:55,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:09:55,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:09:55" (1/1) ... [2019-10-15 01:09:55,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eff8284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:55, skipping insertion in model container [2019-10-15 01:09:55,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:09:55" (1/1) ... [2019-10-15 01:09:55,281 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:09:55,360 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:09:56,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:09:56,084 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:09:56,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:09:56,281 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:09:56,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56 WrapperNode [2019-10-15 01:09:56,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:09:56,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:09:56,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:09:56,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:09:56,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56" (1/1) ... [2019-10-15 01:09:56,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56" (1/1) ... [2019-10-15 01:09:56,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56" (1/1) ... [2019-10-15 01:09:56,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56" (1/1) ... [2019-10-15 01:09:56,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56" (1/1) ... [2019-10-15 01:09:56,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56" (1/1) ... [2019-10-15 01:09:56,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56" (1/1) ... [2019-10-15 01:09:56,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:09:56,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:09:56,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:09:56,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:09:56,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:09:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:09:56,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:09:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:09:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:09:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:09:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:09:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:09:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:09:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:09:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:09:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:09:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:09:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:09:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:09:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:09:56,572 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:09:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:09:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:09:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:09:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:09:56,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:09:56,576 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:09:56,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:09:56,577 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:09:56,577 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:09:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:09:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:09:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:09:56,578 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:09:56,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:09:56,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:09:56,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:09:56,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:09:56,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:09:56,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:09:56,580 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:09:56,581 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:09:56,581 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:09:56,581 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:09:56,581 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:09:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:09:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:09:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:09:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:09:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:09:56,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:09:56,583 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:09:56,583 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:09:56,583 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:09:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:09:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:09:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:09:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:09:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:09:56,585 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:09:56,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:09:56,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:09:56,585 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:09:56,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:09:56,585 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:09:56,586 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:09:56,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:09:56,586 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:09:56,587 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:09:56,587 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:09:56,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:09:56,587 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:09:56,587 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2019-10-15 01:09:56,587 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:09:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2019-10-15 01:09:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:09:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:09:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:09:56,589 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:09:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:09:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:09:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:09:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:09:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:09:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:09:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:09:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:09:56,592 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:09:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:09:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:09:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:09:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:09:56,595 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:09:56,595 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:09:56,595 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:09:56,595 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:09:56,595 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:09:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:09:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:09:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:09:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:09:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:09:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:09:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:09:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:09:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:09:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:09:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:09:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:09:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:09:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:09:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:09:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:09:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:09:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:09:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:09:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:09:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:09:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:09:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:09:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:09:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:09:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:09:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:09:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:09:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:09:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:09:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:09:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:09:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:09:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:09:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:09:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:09:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:09:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:09:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:09:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:09:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:09:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:09:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:09:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:09:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:09:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:09:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:09:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:09:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:09:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:09:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:09:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:09:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:09:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:09:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:09:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:09:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:09:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:09:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:09:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:09:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:09:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:09:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:09:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:09:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:09:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:09:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:09:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:09:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:09:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:09:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2019-10-15 01:09:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:09:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2019-10-15 01:09:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:09:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:09:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:09:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:09:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:09:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:09:59,194 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:09:59,195 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:09:59,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:09:59 BoogieIcfgContainer [2019-10-15 01:09:59,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:09:59,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:09:59,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:09:59,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:09:59,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:09:55" (1/3) ... [2019-10-15 01:09:59,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e619a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:09:59, skipping insertion in model container [2019-10-15 01:09:59,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:56" (2/3) ... [2019-10-15 01:09:59,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e619a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:09:59, skipping insertion in model container [2019-10-15 01:09:59,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:09:59" (3/3) ... [2019-10-15 01:09:59,208 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2019-10-15 01:09:59,218 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:09:59,232 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:09:59,245 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:09:59,286 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:09:59,286 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:09:59,286 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:09:59,286 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:09:59,287 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:09:59,287 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:09:59,287 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:09:59,287 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:09:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states. [2019-10-15 01:09:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-15 01:09:59,365 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:59,367 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:59,371 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:59,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1360016176, now seen corresponding path program 1 times [2019-10-15 01:09:59,388 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:59,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946957430] [2019-10-15 01:09:59,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:59,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:59,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:00,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946957430] [2019-10-15 01:10:00,082 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:00,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:00,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873521986] [2019-10-15 01:10:00,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:00,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:00,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:00,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:00,108 INFO L87 Difference]: Start difference. First operand 789 states. Second operand 4 states. [2019-10-15 01:10:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:00,317 INFO L93 Difference]: Finished difference Result 1227 states and 1983 transitions. [2019-10-15 01:10:00,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:00,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2019-10-15 01:10:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:00,354 INFO L225 Difference]: With dead ends: 1227 [2019-10-15 01:10:00,354 INFO L226 Difference]: Without dead ends: 622 [2019-10-15 01:10:00,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-15 01:10:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-15 01:10:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-15 01:10:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 993 transitions. [2019-10-15 01:10:00,488 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 993 transitions. Word has length 85 [2019-10-15 01:10:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:00,489 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 993 transitions. [2019-10-15 01:10:00,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 993 transitions. [2019-10-15 01:10:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 01:10:00,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:00,494 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:00,495 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:00,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:00,495 INFO L82 PathProgramCache]: Analyzing trace with hash 372991960, now seen corresponding path program 1 times [2019-10-15 01:10:00,496 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:00,496 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294620274] [2019-10-15 01:10:00,496 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:00,496 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:00,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:00,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294620274] [2019-10-15 01:10:00,760 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:00,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:00,761 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048677026] [2019-10-15 01:10:00,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:00,768 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:00,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:00,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:00,769 INFO L87 Difference]: Start difference. First operand 622 states and 993 transitions. Second operand 4 states. [2019-10-15 01:10:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:00,876 INFO L93 Difference]: Finished difference Result 1207 states and 1944 transitions. [2019-10-15 01:10:00,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:00,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-10-15 01:10:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:00,885 INFO L225 Difference]: With dead ends: 1207 [2019-10-15 01:10:00,886 INFO L226 Difference]: Without dead ends: 622 [2019-10-15 01:10:00,896 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:00,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-15 01:10:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-15 01:10:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-15 01:10:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 992 transitions. [2019-10-15 01:10:00,956 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 992 transitions. Word has length 88 [2019-10-15 01:10:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:00,957 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 992 transitions. [2019-10-15 01:10:00,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:00,960 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 992 transitions. [2019-10-15 01:10:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-15 01:10:00,967 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:00,968 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:00,968 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:00,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:00,968 INFO L82 PathProgramCache]: Analyzing trace with hash -155745473, now seen corresponding path program 1 times [2019-10-15 01:10:00,969 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:00,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84348272] [2019-10-15 01:10:00,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:00,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:00,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:01,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84348272] [2019-10-15 01:10:01,201 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:01,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:01,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83996486] [2019-10-15 01:10:01,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:01,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:01,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:01,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:01,203 INFO L87 Difference]: Start difference. First operand 622 states and 992 transitions. Second operand 4 states. [2019-10-15 01:10:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:01,270 INFO L93 Difference]: Finished difference Result 1207 states and 1943 transitions. [2019-10-15 01:10:01,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:01,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-10-15 01:10:01,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:01,276 INFO L225 Difference]: With dead ends: 1207 [2019-10-15 01:10:01,276 INFO L226 Difference]: Without dead ends: 622 [2019-10-15 01:10:01,279 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:01,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-15 01:10:01,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-15 01:10:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-15 01:10:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 991 transitions. [2019-10-15 01:10:01,313 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 991 transitions. Word has length 89 [2019-10-15 01:10:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:01,314 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 991 transitions. [2019-10-15 01:10:01,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 991 transitions. [2019-10-15 01:10:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-15 01:10:01,316 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:01,317 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:01,317 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:01,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash 714612788, now seen corresponding path program 1 times [2019-10-15 01:10:01,317 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:01,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504305199] [2019-10-15 01:10:01,318 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,318 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:01,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504305199] [2019-10-15 01:10:01,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:01,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:01,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555053820] [2019-10-15 01:10:01,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:01,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:01,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:01,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:01,458 INFO L87 Difference]: Start difference. First operand 622 states and 991 transitions. Second operand 4 states. [2019-10-15 01:10:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:01,526 INFO L93 Difference]: Finished difference Result 1207 states and 1942 transitions. [2019-10-15 01:10:01,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:01,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-15 01:10:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:01,544 INFO L225 Difference]: With dead ends: 1207 [2019-10-15 01:10:01,544 INFO L226 Difference]: Without dead ends: 622 [2019-10-15 01:10:01,549 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-15 01:10:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-15 01:10:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-15 01:10:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 990 transitions. [2019-10-15 01:10:01,586 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 990 transitions. Word has length 90 [2019-10-15 01:10:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:01,588 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 990 transitions. [2019-10-15 01:10:01,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 990 transitions. [2019-10-15 01:10:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 01:10:01,591 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:01,591 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:01,591 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:01,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:01,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2007264603, now seen corresponding path program 1 times [2019-10-15 01:10:01,592 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:01,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776891683] [2019-10-15 01:10:01,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:01,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776891683] [2019-10-15 01:10:01,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:01,751 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:01,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939428803] [2019-10-15 01:10:01,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:01,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:01,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:01,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:01,754 INFO L87 Difference]: Start difference. First operand 622 states and 990 transitions. Second operand 4 states. [2019-10-15 01:10:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:01,825 INFO L93 Difference]: Finished difference Result 1207 states and 1941 transitions. [2019-10-15 01:10:01,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:01,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-15 01:10:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:01,837 INFO L225 Difference]: With dead ends: 1207 [2019-10-15 01:10:01,837 INFO L226 Difference]: Without dead ends: 622 [2019-10-15 01:10:01,841 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-15 01:10:01,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-15 01:10:01,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-15 01:10:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 989 transitions. [2019-10-15 01:10:01,869 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 989 transitions. Word has length 91 [2019-10-15 01:10:01,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:01,869 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 989 transitions. [2019-10-15 01:10:01,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 989 transitions. [2019-10-15 01:10:01,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:10:01,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:01,872 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:01,873 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:01,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:01,873 INFO L82 PathProgramCache]: Analyzing trace with hash -788852592, now seen corresponding path program 1 times [2019-10-15 01:10:01,873 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:01,873 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626280839] [2019-10-15 01:10:01,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,874 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:02,143 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626280839] [2019-10-15 01:10:02,144 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:02,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:10:02,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974059050] [2019-10-15 01:10:02,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:10:02,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:02,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:10:02,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:02,145 INFO L87 Difference]: Start difference. First operand 622 states and 989 transitions. Second operand 10 states. [2019-10-15 01:10:02,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:02,319 INFO L93 Difference]: Finished difference Result 1165 states and 1861 transitions. [2019-10-15 01:10:02,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:10:02,320 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-10-15 01:10:02,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:02,325 INFO L225 Difference]: With dead ends: 1165 [2019-10-15 01:10:02,325 INFO L226 Difference]: Without dead ends: 631 [2019-10-15 01:10:02,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:10:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-15 01:10:02,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 629. [2019-10-15 01:10:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:10:02,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 998 transitions. [2019-10-15 01:10:02,357 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 998 transitions. Word has length 92 [2019-10-15 01:10:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:02,358 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 998 transitions. [2019-10-15 01:10:02,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:10:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 998 transitions. [2019-10-15 01:10:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:10:02,360 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:02,361 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:02,361 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:02,361 INFO L82 PathProgramCache]: Analyzing trace with hash -768515217, now seen corresponding path program 1 times [2019-10-15 01:10:02,361 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:02,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343849098] [2019-10-15 01:10:02,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:02,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343849098] [2019-10-15 01:10:02,462 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:02,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:02,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287347270] [2019-10-15 01:10:02,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:02,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:02,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:02,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:02,464 INFO L87 Difference]: Start difference. First operand 629 states and 998 transitions. Second operand 4 states. [2019-10-15 01:10:02,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:02,517 INFO L93 Difference]: Finished difference Result 1213 states and 1947 transitions. [2019-10-15 01:10:02,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:02,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-15 01:10:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:02,522 INFO L225 Difference]: With dead ends: 1213 [2019-10-15 01:10:02,522 INFO L226 Difference]: Without dead ends: 616 [2019-10-15 01:10:02,526 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:02,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-15 01:10:02,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-15 01:10:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-15 01:10:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 975 transitions. [2019-10-15 01:10:02,549 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 975 transitions. Word has length 92 [2019-10-15 01:10:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:02,550 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 975 transitions. [2019-10-15 01:10:02,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 975 transitions. [2019-10-15 01:10:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:10:02,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:02,552 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:02,552 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:02,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1799545833, now seen corresponding path program 1 times [2019-10-15 01:10:02,553 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:02,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378323942] [2019-10-15 01:10:02,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:02,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378323942] [2019-10-15 01:10:02,680 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:02,680 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:02,680 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492813397] [2019-10-15 01:10:02,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:02,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:02,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:02,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:02,682 INFO L87 Difference]: Start difference. First operand 616 states and 975 transitions. Second operand 6 states. [2019-10-15 01:10:02,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:02,948 INFO L93 Difference]: Finished difference Result 1153 states and 1839 transitions. [2019-10-15 01:10:02,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:02,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-10-15 01:10:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:02,954 INFO L225 Difference]: With dead ends: 1153 [2019-10-15 01:10:02,954 INFO L226 Difference]: Without dead ends: 616 [2019-10-15 01:10:02,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:02,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-15 01:10:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-15 01:10:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-15 01:10:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 971 transitions. [2019-10-15 01:10:02,987 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 971 transitions. Word has length 93 [2019-10-15 01:10:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:02,988 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 971 transitions. [2019-10-15 01:10:02,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 971 transitions. [2019-10-15 01:10:02,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:10:02,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:02,995 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:02,995 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:02,995 INFO L82 PathProgramCache]: Analyzing trace with hash 522947091, now seen corresponding path program 1 times [2019-10-15 01:10:02,996 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:02,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739664133] [2019-10-15 01:10:02,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:02,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:03,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739664133] [2019-10-15 01:10:03,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:03,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:03,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094715433] [2019-10-15 01:10:03,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:03,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:03,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:03,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:03,134 INFO L87 Difference]: Start difference. First operand 616 states and 971 transitions. Second operand 6 states. [2019-10-15 01:10:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:03,350 INFO L93 Difference]: Finished difference Result 1153 states and 1835 transitions. [2019-10-15 01:10:03,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:03,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-10-15 01:10:03,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:03,358 INFO L225 Difference]: With dead ends: 1153 [2019-10-15 01:10:03,358 INFO L226 Difference]: Without dead ends: 616 [2019-10-15 01:10:03,362 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-15 01:10:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-15 01:10:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-15 01:10:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 967 transitions. [2019-10-15 01:10:03,395 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 967 transitions. Word has length 94 [2019-10-15 01:10:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:03,396 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 967 transitions. [2019-10-15 01:10:03,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 967 transitions. [2019-10-15 01:10:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:10:03,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:03,400 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:03,400 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:03,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:03,400 INFO L82 PathProgramCache]: Analyzing trace with hash -435705042, now seen corresponding path program 1 times [2019-10-15 01:10:03,401 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:03,401 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904382955] [2019-10-15 01:10:03,401 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,401 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:03,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904382955] [2019-10-15 01:10:03,534 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:03,534 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:03,534 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947473625] [2019-10-15 01:10:03,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:03,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:03,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:03,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:03,536 INFO L87 Difference]: Start difference. First operand 616 states and 967 transitions. Second operand 6 states. [2019-10-15 01:10:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:03,767 INFO L93 Difference]: Finished difference Result 1153 states and 1831 transitions. [2019-10-15 01:10:03,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:03,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-15 01:10:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:03,775 INFO L225 Difference]: With dead ends: 1153 [2019-10-15 01:10:03,775 INFO L226 Difference]: Without dead ends: 616 [2019-10-15 01:10:03,784 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-15 01:10:03,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-10-15 01:10:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-10-15 01:10:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 963 transitions. [2019-10-15 01:10:03,823 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 963 transitions. Word has length 95 [2019-10-15 01:10:03,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:03,824 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 963 transitions. [2019-10-15 01:10:03,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 963 transitions. [2019-10-15 01:10:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:10:03,826 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:03,826 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:03,826 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:03,827 INFO L82 PathProgramCache]: Analyzing trace with hash 612149166, now seen corresponding path program 1 times [2019-10-15 01:10:03,827 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:03,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608580179] [2019-10-15 01:10:03,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:03,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:03,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608580179] [2019-10-15 01:10:03,968 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:03,968 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:03,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868876128] [2019-10-15 01:10:03,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:03,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:03,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:03,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:03,970 INFO L87 Difference]: Start difference. First operand 616 states and 963 transitions. Second operand 7 states. [2019-10-15 01:10:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:04,095 INFO L93 Difference]: Finished difference Result 1153 states and 1827 transitions. [2019-10-15 01:10:04,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:04,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-15 01:10:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:04,102 INFO L225 Difference]: With dead ends: 1153 [2019-10-15 01:10:04,102 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:10:04,105 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:10:04,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-15 01:10:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:10:04,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 929 transitions. [2019-10-15 01:10:04,125 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 929 transitions. Word has length 95 [2019-10-15 01:10:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:04,127 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 929 transitions. [2019-10-15 01:10:04,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 929 transitions. [2019-10-15 01:10:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:10:04,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:04,129 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:04,129 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:04,130 INFO L82 PathProgramCache]: Analyzing trace with hash -127946888, now seen corresponding path program 1 times [2019-10-15 01:10:04,130 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:04,130 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754843760] [2019-10-15 01:10:04,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:04,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754843760] [2019-10-15 01:10:04,248 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:04,248 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:04,248 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899141882] [2019-10-15 01:10:04,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:04,249 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:04,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:04,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:04,250 INFO L87 Difference]: Start difference. First operand 595 states and 929 transitions. Second operand 6 states. [2019-10-15 01:10:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:04,348 INFO L93 Difference]: Finished difference Result 1132 states and 1793 transitions. [2019-10-15 01:10:04,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:04,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-15 01:10:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:04,354 INFO L225 Difference]: With dead ends: 1132 [2019-10-15 01:10:04,354 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:10:04,357 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:10:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-15 01:10:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:10:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 928 transitions. [2019-10-15 01:10:04,378 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 928 transitions. Word has length 96 [2019-10-15 01:10:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:04,380 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 928 transitions. [2019-10-15 01:10:04,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 928 transitions. [2019-10-15 01:10:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:10:04,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:04,382 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:04,383 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:04,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:04,383 INFO L82 PathProgramCache]: Analyzing trace with hash 783824499, now seen corresponding path program 1 times [2019-10-15 01:10:04,383 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:04,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563438534] [2019-10-15 01:10:04,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:04,496 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563438534] [2019-10-15 01:10:04,497 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:04,497 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:04,497 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797901909] [2019-10-15 01:10:04,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:04,498 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:04,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:04,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:04,498 INFO L87 Difference]: Start difference. First operand 595 states and 928 transitions. Second operand 6 states. [2019-10-15 01:10:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:04,596 INFO L93 Difference]: Finished difference Result 1132 states and 1792 transitions. [2019-10-15 01:10:04,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:04,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-15 01:10:04,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:04,601 INFO L225 Difference]: With dead ends: 1132 [2019-10-15 01:10:04,602 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:10:04,605 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:04,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:10:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-15 01:10:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:10:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 927 transitions. [2019-10-15 01:10:04,626 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 927 transitions. Word has length 97 [2019-10-15 01:10:04,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:04,626 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 927 transitions. [2019-10-15 01:10:04,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:04,627 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 927 transitions. [2019-10-15 01:10:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:10:04,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:04,629 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:04,629 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:04,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1054830371, now seen corresponding path program 1 times [2019-10-15 01:10:04,630 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:04,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223197113] [2019-10-15 01:10:04,630 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:04,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:04,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223197113] [2019-10-15 01:10:04,811 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:04,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:10:04,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122379578] [2019-10-15 01:10:04,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:10:04,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:04,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:10:04,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:04,813 INFO L87 Difference]: Start difference. First operand 595 states and 927 transitions. Second operand 12 states. [2019-10-15 01:10:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:05,019 INFO L93 Difference]: Finished difference Result 1133 states and 1791 transitions. [2019-10-15 01:10:05,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:10:05,019 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-10-15 01:10:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:05,026 INFO L225 Difference]: With dead ends: 1133 [2019-10-15 01:10:05,026 INFO L226 Difference]: Without dead ends: 595 [2019-10-15 01:10:05,030 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:10:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-15 01:10:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-10-15 01:10:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:10:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 926 transitions. [2019-10-15 01:10:05,055 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 926 transitions. Word has length 98 [2019-10-15 01:10:05,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:05,056 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 926 transitions. [2019-10-15 01:10:05,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:10:05,056 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 926 transitions. [2019-10-15 01:10:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:10:05,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:05,058 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:05,058 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:05,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1727482954, now seen corresponding path program 1 times [2019-10-15 01:10:05,059 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:05,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069316311] [2019-10-15 01:10:05,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:05,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:05,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:10:05,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069316311] [2019-10-15 01:10:05,234 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:05,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:05,235 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228289859] [2019-10-15 01:10:05,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:05,236 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:05,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:05,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:05,236 INFO L87 Difference]: Start difference. First operand 595 states and 926 transitions. Second operand 6 states. [2019-10-15 01:10:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:09,010 INFO L93 Difference]: Finished difference Result 1763 states and 2828 transitions. [2019-10-15 01:10:09,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:09,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-15 01:10:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:09,021 INFO L225 Difference]: With dead ends: 1763 [2019-10-15 01:10:09,021 INFO L226 Difference]: Without dead ends: 1234 [2019-10-15 01:10:09,024 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2019-10-15 01:10:09,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1109. [2019-10-15 01:10:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2019-10-15 01:10:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1772 transitions. [2019-10-15 01:10:09,075 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1772 transitions. Word has length 99 [2019-10-15 01:10:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:09,076 INFO L462 AbstractCegarLoop]: Abstraction has 1109 states and 1772 transitions. [2019-10-15 01:10:09,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1772 transitions. [2019-10-15 01:10:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:10:09,082 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:09,082 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:09,083 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:09,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:09,083 INFO L82 PathProgramCache]: Analyzing trace with hash 593054676, now seen corresponding path program 1 times [2019-10-15 01:10:09,083 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:09,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541495130] [2019-10-15 01:10:09,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:09,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:09,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:09,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541495130] [2019-10-15 01:10:09,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:09,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:09,250 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239768762] [2019-10-15 01:10:09,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:09,251 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:09,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:09,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:09,252 INFO L87 Difference]: Start difference. First operand 1109 states and 1772 transitions. Second operand 6 states. [2019-10-15 01:10:13,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:13,533 INFO L93 Difference]: Finished difference Result 2873 states and 4702 transitions. [2019-10-15 01:10:13,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:10:13,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2019-10-15 01:10:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:13,547 INFO L225 Difference]: With dead ends: 2873 [2019-10-15 01:10:13,547 INFO L226 Difference]: Without dead ends: 1831 [2019-10-15 01:10:13,554 INFO L600 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 [2019-10-15 01:10:13,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2019-10-15 01:10:13,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1697. [2019-10-15 01:10:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1697 states. [2019-10-15 01:10:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2722 transitions. [2019-10-15 01:10:13,647 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2722 transitions. Word has length 149 [2019-10-15 01:10:13,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:13,648 INFO L462 AbstractCegarLoop]: Abstraction has 1697 states and 2722 transitions. [2019-10-15 01:10:13,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2722 transitions. [2019-10-15 01:10:13,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 01:10:13,654 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:13,655 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:13,655 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:13,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:13,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2131105979, now seen corresponding path program 1 times [2019-10-15 01:10:13,656 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:13,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400135470] [2019-10-15 01:10:13,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,656 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:13,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400135470] [2019-10-15 01:10:13,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:13,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:10:13,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925890463] [2019-10-15 01:10:13,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:10:13,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:13,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:10:13,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:13,858 INFO L87 Difference]: Start difference. First operand 1697 states and 2722 transitions. Second operand 12 states. [2019-10-15 01:10:24,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:24,837 INFO L93 Difference]: Finished difference Result 5461 states and 8753 transitions. [2019-10-15 01:10:24,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 01:10:24,837 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2019-10-15 01:10:24,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:24,862 INFO L225 Difference]: With dead ends: 5461 [2019-10-15 01:10:24,862 INFO L226 Difference]: Without dead ends: 3830 [2019-10-15 01:10:24,874 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:10:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2019-10-15 01:10:25,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3761. [2019-10-15 01:10:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3761 states. [2019-10-15 01:10:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 5956 transitions. [2019-10-15 01:10:25,051 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 5956 transitions. Word has length 149 [2019-10-15 01:10:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:25,052 INFO L462 AbstractCegarLoop]: Abstraction has 3761 states and 5956 transitions. [2019-10-15 01:10:25,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:10:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 5956 transitions. [2019-10-15 01:10:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 01:10:25,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:25,058 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:25,059 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:25,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:25,059 INFO L82 PathProgramCache]: Analyzing trace with hash 386561165, now seen corresponding path program 1 times [2019-10-15 01:10:25,059 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:25,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605313038] [2019-10-15 01:10:25,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:25,060 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:25,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:25,245 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605313038] [2019-10-15 01:10:25,245 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:25,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:25,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677794239] [2019-10-15 01:10:25,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:25,246 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:25,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:25,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:25,247 INFO L87 Difference]: Start difference. First operand 3761 states and 5956 transitions. Second operand 6 states. [2019-10-15 01:10:29,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:29,633 INFO L93 Difference]: Finished difference Result 10571 states and 17104 transitions. [2019-10-15 01:10:29,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:10:29,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2019-10-15 01:10:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:29,677 INFO L225 Difference]: With dead ends: 10571 [2019-10-15 01:10:29,677 INFO L226 Difference]: Without dead ends: 6879 [2019-10-15 01:10:29,701 INFO L600 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 [2019-10-15 01:10:29,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6879 states.