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_spec9_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:12:18,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:12:18,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:12:18,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:12:18,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:12:18,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:12:18,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:12:18,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:12:18,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:12:18,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:12:18,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:12:18,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:12:18,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:12:18,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:12:18,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:12:18,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:12:18,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:12:18,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:12:18,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:12:18,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:12:18,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:12:18,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:12:18,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:12:18,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:12:18,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:12:18,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:12:18,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:12:18,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:12:18,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:12:18,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:12:18,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:12:18,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:12:18,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:12:18,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:12:18,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:12:18,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:12:18,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:12:18,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:12:18,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:12:18,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:12:18,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:12:18,181 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:12:18,215 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:12:18,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:12:18,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:12:18,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:12:18,221 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:12:18,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:12:18,221 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:12:18,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:12:18,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:12:18,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:12:18,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:12:18,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:12:18,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:12:18,223 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:12:18,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:12:18,225 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:12:18,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:12:18,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:12:18,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:12:18,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:12:18,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:12:18,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:18,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:12:18,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:12:18,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:12:18,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:12:18,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:12:18,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:12:18,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:12:18,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:12:18,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:12:18,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:12:18,541 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:12:18,541 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:12:18,542 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-10-13 21:12:18,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7de6540/c2fb40c955ae43a4bcc57992d4fed6d7/FLAGd4f76a06a [2019-10-13 21:12:19,323 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:12:19,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-10-13 21:12:19,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7de6540/c2fb40c955ae43a4bcc57992d4fed6d7/FLAGd4f76a06a [2019-10-13 21:12:19,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7de6540/c2fb40c955ae43a4bcc57992d4fed6d7 [2019-10-13 21:12:19,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:12:19,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:12:19,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:19,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:12:19,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:12:19,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:19" (1/1) ... [2019-10-13 21:12:19,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f7640f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:19, skipping insertion in model container [2019-10-13 21:12:19,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:12:19" (1/1) ... [2019-10-13 21:12:19,520 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:12:19,592 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:12:20,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:20,395 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:12:20,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:12:20,594 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:12:20,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20 WrapperNode [2019-10-13 21:12:20,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:12:20,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:12:20,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:12:20,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:12:20,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20" (1/1) ... [2019-10-13 21:12:20,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20" (1/1) ... [2019-10-13 21:12:20,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20" (1/1) ... [2019-10-13 21:12:20,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20" (1/1) ... [2019-10-13 21:12:20,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20" (1/1) ... [2019-10-13 21:12:20,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20" (1/1) ... [2019-10-13 21:12:20,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20" (1/1) ... [2019-10-13 21:12:20,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:12:20,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:12:20,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:12:20,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:12:20,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:12:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:12:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:12:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:12:20,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:12:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:12:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:12:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:12:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:12:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:12:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:12:20,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:12:20,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:12:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:12:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:12:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:12:20,926 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:12:20,926 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:12:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:12:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:12:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:12:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:12:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:12:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:12:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:12:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:12:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:12:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:12:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:12:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:12:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:12:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:12:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:12:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:12:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:12:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:12:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:12:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:12:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:12:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-13 21:12:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:12:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-13 21:12:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:12:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:12:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 21:12:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 21:12:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:12:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:12:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:12:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-13 21:12:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-13 21:12:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-13 21:12:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-13 21:12:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:12:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:12:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:12:20,936 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:12:20,936 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:12:20,936 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:12:20,936 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:12:20,937 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:12:20,937 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:12:20,937 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:12:20,937 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:12:20,937 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:12:20,937 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:12:20,938 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:12:20,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:12:20,939 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:12:20,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:12:20,939 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:12:20,939 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:12:20,940 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:12:20,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:12:20,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:12:20,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:12:20,941 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:12:20,941 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:12:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:12:20,942 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:12:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:12:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:12:20,943 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:12:20,944 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:12:20,944 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:12:20,944 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:12:20,944 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:12:20,944 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:12:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:12:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:12:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:12:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:12:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:12:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:12:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:12:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:12:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:12:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:12:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:12:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:12:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:12:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:12:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:12:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:12:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 21:12:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 21:12:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:12:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:12:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 21:12:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:12:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-13 21:12:20,949 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:12:20,949 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:12:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:12:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:12:20,950 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:12:20,951 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:12:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:12:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:12:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:12:20,952 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:12:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:12:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-13 21:12:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-13 21:12:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-13 21:12:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:12:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:12:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:12:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:12:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:12:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:12:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:12:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:12:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:12:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:12:20,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:12:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:12:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:12:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:12:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:12:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:12:20,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:12:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:12:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:12:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-13 21:12:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-13 21:12:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:12:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:12:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:12:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:12:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:12:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:12:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:12:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:12:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:12:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:12:20,963 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:12:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:12:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:12:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:12:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:12:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:12:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:12:20,964 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:12:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:12:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:12:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:12:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:12:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:12:20,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:12:23,491 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:12:23,491 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:12:23,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:23 BoogieIcfgContainer [2019-10-13 21:12:23,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:12:23,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:12:23,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:12:23,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:12:23,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:12:19" (1/3) ... [2019-10-13 21:12:23,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a91c6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:23, skipping insertion in model container [2019-10-13 21:12:23,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:12:20" (2/3) ... [2019-10-13 21:12:23,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a91c6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:12:23, skipping insertion in model container [2019-10-13 21:12:23,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:12:23" (3/3) ... [2019-10-13 21:12:23,502 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2019-10-13 21:12:23,514 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:12:23,525 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:12:23,538 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:12:23,572 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:12:23,572 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:12:23,573 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:12:23,573 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:12:23,573 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:12:23,573 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:12:23,573 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:12:23,573 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:12:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states. [2019-10-13 21:12:23,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 21:12:23,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:23,628 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] [2019-10-13 21:12:23,630 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:23,637 INFO L82 PathProgramCache]: Analyzing trace with hash 961296188, now seen corresponding path program 1 times [2019-10-13 21:12:23,647 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:23,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004513827] [2019-10-13 21:12:23,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:23,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:23,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:24,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004513827] [2019-10-13 21:12:24,373 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:24,374 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:24,374 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383057163] [2019-10-13 21:12:24,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:24,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:24,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:24,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:24,403 INFO L87 Difference]: Start difference. First operand 793 states. Second operand 4 states. [2019-10-13 21:12:24,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:24,621 INFO L93 Difference]: Finished difference Result 1235 states and 1985 transitions. [2019-10-13 21:12:24,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:24,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-10-13 21:12:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:24,653 INFO L225 Difference]: With dead ends: 1235 [2019-10-13 21:12:24,654 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:12:24,663 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:12:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:12:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:12:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 994 transitions. [2019-10-13 21:12:24,808 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 994 transitions. Word has length 87 [2019-10-13 21:12:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:24,809 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 994 transitions. [2019-10-13 21:12:24,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 994 transitions. [2019-10-13 21:12:24,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-13 21:12:24,823 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:24,824 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:24,824 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:24,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:24,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1704388894, now seen corresponding path program 1 times [2019-10-13 21:12:24,826 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:24,826 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911963153] [2019-10-13 21:12:24,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:24,826 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:24,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:25,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911963153] [2019-10-13 21:12:25,037 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:25,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:25,037 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832957857] [2019-10-13 21:12:25,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:25,047 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:25,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:25,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:25,047 INFO L87 Difference]: Start difference. First operand 626 states and 994 transitions. Second operand 4 states. [2019-10-13 21:12:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:25,158 INFO L93 Difference]: Finished difference Result 1215 states and 1946 transitions. [2019-10-13 21:12:25,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:25,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-13 21:12:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:25,168 INFO L225 Difference]: With dead ends: 1215 [2019-10-13 21:12:25,169 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:12:25,173 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:12:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:12:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:12:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 993 transitions. [2019-10-13 21:12:25,209 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 993 transitions. Word has length 90 [2019-10-13 21:12:25,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:25,209 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 993 transitions. [2019-10-13 21:12:25,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:25,210 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 993 transitions. [2019-10-13 21:12:25,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-13 21:12:25,212 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:25,212 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:25,212 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:25,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:25,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1677160523, now seen corresponding path program 1 times [2019-10-13 21:12:25,213 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:25,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693227689] [2019-10-13 21:12:25,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:25,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:25,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:25,435 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693227689] [2019-10-13 21:12:25,436 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:25,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:25,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768850994] [2019-10-13 21:12:25,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:25,437 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:25,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:25,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:25,439 INFO L87 Difference]: Start difference. First operand 626 states and 993 transitions. Second operand 4 states. [2019-10-13 21:12:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:25,522 INFO L93 Difference]: Finished difference Result 1215 states and 1945 transitions. [2019-10-13 21:12:25,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:25,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-13 21:12:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:25,539 INFO L225 Difference]: With dead ends: 1215 [2019-10-13 21:12:25,539 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:12:25,543 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:12:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:12:25,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:12:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 992 transitions. [2019-10-13 21:12:25,579 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 992 transitions. Word has length 91 [2019-10-13 21:12:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:25,580 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 992 transitions. [2019-10-13 21:12:25,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 992 transitions. [2019-10-13 21:12:25,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 21:12:25,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:25,582 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:25,583 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:25,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:25,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1700539194, now seen corresponding path program 1 times [2019-10-13 21:12:25,584 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:25,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690966339] [2019-10-13 21:12:25,584 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:25,584 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:25,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:25,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690966339] [2019-10-13 21:12:25,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:25,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:25,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285533010] [2019-10-13 21:12:25,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:25,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:25,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:25,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:25,754 INFO L87 Difference]: Start difference. First operand 626 states and 992 transitions. Second operand 4 states. [2019-10-13 21:12:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:25,832 INFO L93 Difference]: Finished difference Result 1215 states and 1944 transitions. [2019-10-13 21:12:25,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:25,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-13 21:12:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:25,843 INFO L225 Difference]: With dead ends: 1215 [2019-10-13 21:12:25,843 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:12:25,847 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:12:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:12:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:12:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 991 transitions. [2019-10-13 21:12:25,883 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 991 transitions. Word has length 92 [2019-10-13 21:12:25,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:25,884 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 991 transitions. [2019-10-13 21:12:25,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 991 transitions. [2019-10-13 21:12:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 21:12:25,892 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:25,892 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:25,893 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:25,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1002231129, now seen corresponding path program 1 times [2019-10-13 21:12:25,893 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:25,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382834524] [2019-10-13 21:12:25,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:25,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:25,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:26,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382834524] [2019-10-13 21:12:26,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:26,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:26,043 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950481512] [2019-10-13 21:12:26,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:26,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:26,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:26,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:26,045 INFO L87 Difference]: Start difference. First operand 626 states and 991 transitions. Second operand 4 states. [2019-10-13 21:12:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:26,105 INFO L93 Difference]: Finished difference Result 1215 states and 1943 transitions. [2019-10-13 21:12:26,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:26,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-10-13 21:12:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:26,112 INFO L225 Difference]: With dead ends: 1215 [2019-10-13 21:12:26,112 INFO L226 Difference]: Without dead ends: 626 [2019-10-13 21:12:26,116 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:26,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-10-13 21:12:26,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-10-13 21:12:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:12:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 990 transitions. [2019-10-13 21:12:26,147 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 990 transitions. Word has length 93 [2019-10-13 21:12:26,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:26,148 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 990 transitions. [2019-10-13 21:12:26,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 990 transitions. [2019-10-13 21:12:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:12:26,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:26,150 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:26,158 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1978692950, now seen corresponding path program 1 times [2019-10-13 21:12:26,158 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:26,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122298420] [2019-10-13 21:12:26,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:26,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:26,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:26,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122298420] [2019-10-13 21:12:26,431 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:26,431 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:12:26,431 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047200898] [2019-10-13 21:12:26,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:12:26,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:26,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:12:26,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:12:26,434 INFO L87 Difference]: Start difference. First operand 626 states and 990 transitions. Second operand 10 states. [2019-10-13 21:12:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:26,610 INFO L93 Difference]: Finished difference Result 1173 states and 1863 transitions. [2019-10-13 21:12:26,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:12:26,611 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-10-13 21:12:26,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:26,623 INFO L225 Difference]: With dead ends: 1173 [2019-10-13 21:12:26,623 INFO L226 Difference]: Without dead ends: 635 [2019-10-13 21:12:26,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:12:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2019-10-13 21:12:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2019-10-13 21:12:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2019-10-13 21:12:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 999 transitions. [2019-10-13 21:12:26,660 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 999 transitions. Word has length 94 [2019-10-13 21:12:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:26,662 INFO L462 AbstractCegarLoop]: Abstraction has 633 states and 999 transitions. [2019-10-13 21:12:26,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:12:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 999 transitions. [2019-10-13 21:12:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 21:12:26,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:26,667 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:26,668 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 48073845, now seen corresponding path program 1 times [2019-10-13 21:12:26,668 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:26,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962416893] [2019-10-13 21:12:26,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:26,669 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:26,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:26,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962416893] [2019-10-13 21:12:26,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:26,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:12:26,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566040628] [2019-10-13 21:12:26,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:12:26,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:26,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:12:26,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:12:26,779 INFO L87 Difference]: Start difference. First operand 633 states and 999 transitions. Second operand 4 states. [2019-10-13 21:12:26,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:26,837 INFO L93 Difference]: Finished difference Result 1221 states and 1949 transitions. [2019-10-13 21:12:26,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:12:26,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-13 21:12:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:26,844 INFO L225 Difference]: With dead ends: 1221 [2019-10-13 21:12:26,844 INFO L226 Difference]: Without dead ends: 620 [2019-10-13 21:12:26,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:12:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-13 21:12:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-13 21:12:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-13 21:12:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 976 transitions. [2019-10-13 21:12:26,872 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 976 transitions. Word has length 94 [2019-10-13 21:12:26,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:26,873 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 976 transitions. [2019-10-13 21:12:26,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:12:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 976 transitions. [2019-10-13 21:12:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 21:12:26,876 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:26,876 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:26,876 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:26,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:26,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1242574475, now seen corresponding path program 1 times [2019-10-13 21:12:26,877 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:26,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261883658] [2019-10-13 21:12:26,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:26,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:26,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:27,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261883658] [2019-10-13 21:12:27,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:27,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:27,016 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671921488] [2019-10-13 21:12:27,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:27,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:27,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:27,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:27,017 INFO L87 Difference]: Start difference. First operand 620 states and 976 transitions. Second operand 6 states. [2019-10-13 21:12:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:27,369 INFO L93 Difference]: Finished difference Result 1161 states and 1841 transitions. [2019-10-13 21:12:27,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:27,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-13 21:12:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:27,376 INFO L225 Difference]: With dead ends: 1161 [2019-10-13 21:12:27,376 INFO L226 Difference]: Without dead ends: 620 [2019-10-13 21:12:27,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:27,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-13 21:12:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-13 21:12:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-13 21:12:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 972 transitions. [2019-10-13 21:12:27,417 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 972 transitions. Word has length 95 [2019-10-13 21:12:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:27,419 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 972 transitions. [2019-10-13 21:12:27,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 972 transitions. [2019-10-13 21:12:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-13 21:12:27,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:27,422 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:27,422 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash 96991961, now seen corresponding path program 1 times [2019-10-13 21:12:27,422 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:27,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361357072] [2019-10-13 21:12:27,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:27,423 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:27,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:27,578 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361357072] [2019-10-13 21:12:27,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:27,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:27,582 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266098482] [2019-10-13 21:12:27,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:27,584 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:27,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:27,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:27,585 INFO L87 Difference]: Start difference. First operand 620 states and 972 transitions. Second operand 6 states. [2019-10-13 21:12:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:27,842 INFO L93 Difference]: Finished difference Result 1161 states and 1837 transitions. [2019-10-13 21:12:27,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:27,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-13 21:12:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:27,849 INFO L225 Difference]: With dead ends: 1161 [2019-10-13 21:12:27,849 INFO L226 Difference]: Without dead ends: 620 [2019-10-13 21:12:27,854 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-13 21:12:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-13 21:12:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-13 21:12:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 968 transitions. [2019-10-13 21:12:27,899 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 968 transitions. Word has length 96 [2019-10-13 21:12:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:27,899 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 968 transitions. [2019-10-13 21:12:27,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:27,899 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 968 transitions. [2019-10-13 21:12:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:12:27,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:27,901 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:27,902 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:27,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:27,902 INFO L82 PathProgramCache]: Analyzing trace with hash 44864186, now seen corresponding path program 1 times [2019-10-13 21:12:27,902 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:27,903 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729887495] [2019-10-13 21:12:27,903 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:27,903 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:27,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:28,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729887495] [2019-10-13 21:12:28,102 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:28,102 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:28,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239742095] [2019-10-13 21:12:28,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:28,103 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:28,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:28,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:28,104 INFO L87 Difference]: Start difference. First operand 620 states and 968 transitions. Second operand 6 states. [2019-10-13 21:12:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:28,310 INFO L93 Difference]: Finished difference Result 1161 states and 1833 transitions. [2019-10-13 21:12:28,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:28,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-13 21:12:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:28,317 INFO L225 Difference]: With dead ends: 1161 [2019-10-13 21:12:28,318 INFO L226 Difference]: Without dead ends: 620 [2019-10-13 21:12:28,330 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-10-13 21:12:28,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2019-10-13 21:12:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-13 21:12:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 964 transitions. [2019-10-13 21:12:28,357 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 964 transitions. Word has length 97 [2019-10-13 21:12:28,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:28,358 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 964 transitions. [2019-10-13 21:12:28,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 964 transitions. [2019-10-13 21:12:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 21:12:28,360 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:28,360 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:28,360 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:28,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:28,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2010410810, now seen corresponding path program 1 times [2019-10-13 21:12:28,361 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:28,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801941430] [2019-10-13 21:12:28,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:28,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:28,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:28,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801941430] [2019-10-13 21:12:28,580 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:28,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:12:28,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390134348] [2019-10-13 21:12:28,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:12:28,582 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:28,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:12:28,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:12:28,583 INFO L87 Difference]: Start difference. First operand 620 states and 964 transitions. Second operand 7 states. [2019-10-13 21:12:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:28,689 INFO L93 Difference]: Finished difference Result 1161 states and 1829 transitions. [2019-10-13 21:12:28,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:12:28,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-13 21:12:28,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:28,697 INFO L225 Difference]: With dead ends: 1161 [2019-10-13 21:12:28,698 INFO L226 Difference]: Without dead ends: 599 [2019-10-13 21:12:28,701 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-13 21:12:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-13 21:12:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-13 21:12:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 930 transitions. [2019-10-13 21:12:28,724 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 930 transitions. Word has length 97 [2019-10-13 21:12:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:28,724 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 930 transitions. [2019-10-13 21:12:28,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:12:28,724 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 930 transitions. [2019-10-13 21:12:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 21:12:28,726 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:28,726 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:28,726 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:28,727 INFO L82 PathProgramCache]: Analyzing trace with hash -200111170, now seen corresponding path program 1 times [2019-10-13 21:12:28,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:28,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989990965] [2019-10-13 21:12:28,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:28,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:28,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:28,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989990965] [2019-10-13 21:12:28,850 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:28,850 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:28,850 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865331520] [2019-10-13 21:12:28,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:28,851 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:28,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:28,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:28,851 INFO L87 Difference]: Start difference. First operand 599 states and 930 transitions. Second operand 6 states. [2019-10-13 21:12:28,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:28,975 INFO L93 Difference]: Finished difference Result 1140 states and 1795 transitions. [2019-10-13 21:12:28,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:28,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-13 21:12:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:28,982 INFO L225 Difference]: With dead ends: 1140 [2019-10-13 21:12:28,982 INFO L226 Difference]: Without dead ends: 599 [2019-10-13 21:12:28,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-13 21:12:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-13 21:12:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-13 21:12:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 929 transitions. [2019-10-13 21:12:29,014 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 929 transitions. Word has length 98 [2019-10-13 21:12:29,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:29,015 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 929 transitions. [2019-10-13 21:12:29,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:29,015 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 929 transitions. [2019-10-13 21:12:29,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 21:12:29,017 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:29,018 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:29,018 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:29,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:29,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2128394241, now seen corresponding path program 1 times [2019-10-13 21:12:29,019 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:29,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857443288] [2019-10-13 21:12:29,020 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:29,020 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:29,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:29,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857443288] [2019-10-13 21:12:29,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:29,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:12:29,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740366752] [2019-10-13 21:12:29,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:12:29,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:29,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:12:29,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:12:29,182 INFO L87 Difference]: Start difference. First operand 599 states and 929 transitions. Second operand 6 states. [2019-10-13 21:12:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:29,278 INFO L93 Difference]: Finished difference Result 1140 states and 1794 transitions. [2019-10-13 21:12:29,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:12:29,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-13 21:12:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:29,283 INFO L225 Difference]: With dead ends: 1140 [2019-10-13 21:12:29,284 INFO L226 Difference]: Without dead ends: 599 [2019-10-13 21:12:29,287 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:12:29,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-13 21:12:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-13 21:12:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-13 21:12:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 928 transitions. [2019-10-13 21:12:29,310 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 928 transitions. Word has length 99 [2019-10-13 21:12:29,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:29,312 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 928 transitions. [2019-10-13 21:12:29,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:12:29,312 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 928 transitions. [2019-10-13 21:12:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 21:12:29,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:29,314 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, 1] [2019-10-13 21:12:29,314 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:29,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:29,315 INFO L82 PathProgramCache]: Analyzing trace with hash -404641629, now seen corresponding path program 1 times [2019-10-13 21:12:29,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:29,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042046248] [2019-10-13 21:12:29,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:29,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:29,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:29,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042046248] [2019-10-13 21:12:29,530 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:29,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:12:29,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624112864] [2019-10-13 21:12:29,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:12:29,531 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:29,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:12:29,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:12:29,532 INFO L87 Difference]: Start difference. First operand 599 states and 928 transitions. Second operand 12 states. [2019-10-13 21:12:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:29,703 INFO L93 Difference]: Finished difference Result 1141 states and 1793 transitions. [2019-10-13 21:12:29,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:12:29,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-10-13 21:12:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:29,709 INFO L225 Difference]: With dead ends: 1141 [2019-10-13 21:12:29,709 INFO L226 Difference]: Without dead ends: 599 [2019-10-13 21:12:29,713 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:12:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-10-13 21:12:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2019-10-13 21:12:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-13 21:12:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 927 transitions. [2019-10-13 21:12:29,738 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 927 transitions. Word has length 100 [2019-10-13 21:12:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:29,739 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 927 transitions. [2019-10-13 21:12:29,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:12:29,739 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 927 transitions. [2019-10-13 21:12:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 21:12:29,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:29,741 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:12:29,741 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1635405980, now seen corresponding path program 1 times [2019-10-13 21:12:29,742 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:29,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346050836] [2019-10-13 21:12:29,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:29,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:29,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:29,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346050836] [2019-10-13 21:12:29,940 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:29,940 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:12:29,940 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205220567] [2019-10-13 21:12:29,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:12:29,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:29,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:12:29,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:12:29,943 INFO L87 Difference]: Start difference. First operand 599 states and 927 transitions. Second operand 10 states. [2019-10-13 21:12:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:36,431 INFO L93 Difference]: Finished difference Result 1767 states and 2845 transitions. [2019-10-13 21:12:36,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:12:36,433 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2019-10-13 21:12:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:36,443 INFO L225 Difference]: With dead ends: 1767 [2019-10-13 21:12:36,443 INFO L226 Difference]: Without dead ends: 1234 [2019-10-13 21:12:36,447 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:12:36,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2019-10-13 21:12:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1204. [2019-10-13 21:12:36,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-10-13 21:12:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1913 transitions. [2019-10-13 21:12:36,507 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1913 transitions. Word has length 101 [2019-10-13 21:12:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:36,508 INFO L462 AbstractCegarLoop]: Abstraction has 1204 states and 1913 transitions. [2019-10-13 21:12:36,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:12:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1913 transitions. [2019-10-13 21:12:36,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 21:12:36,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:36,510 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, 1, 1, 1] [2019-10-13 21:12:36,510 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:36,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:36,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1559201877, now seen corresponding path program 1 times [2019-10-13 21:12:36,511 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:36,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96639959] [2019-10-13 21:12:36,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:36,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:36,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:36,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96639959] [2019-10-13 21:12:36,654 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:36,654 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:12:36,654 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245773465] [2019-10-13 21:12:36,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:12:36,655 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:36,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:12:36,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:12:36,656 INFO L87 Difference]: Start difference. First operand 1204 states and 1913 transitions. Second operand 10 states. [2019-10-13 21:12:44,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:44,222 INFO L93 Difference]: Finished difference Result 3755 states and 6178 transitions. [2019-10-13 21:12:44,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:12:44,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2019-10-13 21:12:44,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:44,249 INFO L225 Difference]: With dead ends: 3755 [2019-10-13 21:12:44,249 INFO L226 Difference]: Without dead ends: 2617 [2019-10-13 21:12:44,258 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:12:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2019-10-13 21:12:44,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2576. [2019-10-13 21:12:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2576 states. [2019-10-13 21:12:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 4181 transitions. [2019-10-13 21:12:44,400 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 4181 transitions. Word has length 102 [2019-10-13 21:12:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:12:44,401 INFO L462 AbstractCegarLoop]: Abstraction has 2576 states and 4181 transitions. [2019-10-13 21:12:44,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:12:44,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 4181 transitions. [2019-10-13 21:12:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 21:12:44,402 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:12:44,402 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, 1, 1, 1, 1] [2019-10-13 21:12:44,403 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:12:44,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:12:44,403 INFO L82 PathProgramCache]: Analyzing trace with hash -962393984, now seen corresponding path program 1 times [2019-10-13 21:12:44,403 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:12:44,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674153564] [2019-10-13 21:12:44,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:44,404 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:12:44,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:12:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:12:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:12:44,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674153564] [2019-10-13 21:12:44,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:12:44,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:12:44,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832526514] [2019-10-13 21:12:44,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:12:44,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:12:44,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:12:44,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:12:44,569 INFO L87 Difference]: Start difference. First operand 2576 states and 4181 transitions. Second operand 10 states. [2019-10-13 21:12:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:12:51,332 INFO L93 Difference]: Finished difference Result 8357 states and 14067 transitions. [2019-10-13 21:12:51,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:12:51,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-10-13 21:12:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:12:51,383 INFO L225 Difference]: With dead ends: 8357 [2019-10-13 21:12:51,383 INFO L226 Difference]: Without dead ends: 5847 [2019-10-13 21:12:51,405 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:12:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states.