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_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:11:43,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:11:43,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:11:43,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:11:43,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:11:43,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:11:43,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:11:43,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:11:43,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:11:43,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:11:43,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:11:43,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:11:43,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:11:43,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:11:43,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:11:43,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:11:43,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:11:43,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:11:43,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:11:43,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:11:43,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:11:43,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:11:43,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:11:43,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:11:43,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:11:43,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:11:43,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:11:43,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:11:43,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:11:43,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:11:43,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:11:43,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:11:43,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:11:43,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:11:43,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:11:43,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:11:43,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:11:43,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:11:43,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:11:43,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:11:43,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:11:43,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:11:43,292 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:11:43,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:11:43,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:11:43,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:11:43,294 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:11:43,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:11:43,294 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:11:43,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:11:43,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:11:43,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:11:43,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:11:43,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:11:43,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:11:43,296 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:11:43,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:11:43,296 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:11:43,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:11:43,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:11:43,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:11:43,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:11:43,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:11:43,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:43,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:11:43,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:11:43,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:11:43,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:11:43,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:11:43,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:11:43,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:11:43,560 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:11:43,572 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:11:43,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:11:43,577 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:11:43,577 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:11:43,578 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2019-10-15 01:11:43,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99927f340/3b5f4566001147639675585d340740d6/FLAGdc7651088 [2019-10-15 01:11:44,326 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:11:44,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2019-10-15 01:11:44,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99927f340/3b5f4566001147639675585d340740d6/FLAGdc7651088 [2019-10-15 01:11:44,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99927f340/3b5f4566001147639675585d340740d6 [2019-10-15 01:11:44,512 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:11:44,514 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:11:44,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:44,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:11:44,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:11:44,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:44" (1/1) ... [2019-10-15 01:11:44,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67af7f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:44, skipping insertion in model container [2019-10-15 01:11:44,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:11:44" (1/1) ... [2019-10-15 01:11:44,528 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:11:44,615 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:11:45,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:45,332 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:11:45,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:11:45,507 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:11:45,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45 WrapperNode [2019-10-15 01:11:45,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:11:45,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:11:45,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:11:45,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:11:45,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45" (1/1) ... [2019-10-15 01:11:45,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45" (1/1) ... [2019-10-15 01:11:45,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45" (1/1) ... [2019-10-15 01:11:45,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45" (1/1) ... [2019-10-15 01:11:45,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45" (1/1) ... [2019-10-15 01:11:45,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45" (1/1) ... [2019-10-15 01:11:45,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45" (1/1) ... [2019-10-15 01:11:45,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:11:45,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:11:45,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:11:45,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:11:45,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:11:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:11:45,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:11:45,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:45,785 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:11:45,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:11:45,786 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:11:45,786 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:11:45,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:11:45,787 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:11:45,787 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:11:45,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:11:45,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:11:45,788 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:11:45,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:45,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:45,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:11:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:11:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:11:45,792 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:11:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:11:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:11:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:45,793 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:11:45,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:11:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:11:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:11:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:11:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:11:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:11:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:11:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:11:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:11:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:11:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:11:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:11:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:11:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:11:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:11:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:11:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:11:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:11:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:11:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:11:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:11:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:11:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:11:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:11:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:11:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:11:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:11:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:11:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:11:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:11:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:11:45,803 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:11:45,803 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:11:45,803 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:11:45,803 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:11:45,804 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:11:45,804 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:11:45,804 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:11:45,804 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:11:45,804 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:11:45,805 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:11:45,805 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:11:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:11:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:11:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:11:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:11:45,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:11:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:11:45,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:11:45,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:11:45,808 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:11:45,808 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:11:45,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:11:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:11:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:11:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:11:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2019-10-15 01:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2019-10-15 01:11:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2019-10-15 01:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2019-10-15 01:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:11:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:11:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:11:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:11:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:11:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:11:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:11:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:11:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:11:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:11:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:11:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:11:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2019-10-15 01:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:11:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2019-10-15 01:11:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:11:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:11:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:11:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:11:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:11:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:11:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:11:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:11:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:11:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:11:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:11:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:11:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:11:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:11:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:11:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:11:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:11:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:11:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:11:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:11:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:11:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:11:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:11:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:11:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:11:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:11:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:11:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:11:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:11:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:11:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:11:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:11:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:11:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:11:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:11:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:11:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:11:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:11:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:11:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:11:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:11:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:11:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:11:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:11:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:11:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:11:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:11:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:11:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:11:48,127 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:11:48,127 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:11:48,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:48 BoogieIcfgContainer [2019-10-15 01:11:48,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:11:48,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:11:48,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:11:48,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:11:48,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:11:44" (1/3) ... [2019-10-15 01:11:48,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435e040e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:48, skipping insertion in model container [2019-10-15 01:11:48,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:11:45" (2/3) ... [2019-10-15 01:11:48,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435e040e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:11:48, skipping insertion in model container [2019-10-15 01:11:48,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:11:48" (3/3) ... [2019-10-15 01:11:48,138 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product32.cil.c [2019-10-15 01:11:48,149 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:11:48,161 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:11:48,172 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:11:48,223 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:11:48,223 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:11:48,223 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:11:48,223 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:11:48,223 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:11:48,224 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:11:48,224 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:11:48,224 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:11:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states. [2019-10-15 01:11:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-15 01:11:48,298 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:48,299 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] [2019-10-15 01:11:48,303 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:48,311 INFO L82 PathProgramCache]: Analyzing trace with hash 165755889, now seen corresponding path program 1 times [2019-10-15 01:11:48,321 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:48,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900152789] [2019-10-15 01:11:48,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:48,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:48,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:48,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900152789] [2019-10-15 01:11:48,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:48,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:48,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129604483] [2019-10-15 01:11:48,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:48,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:48,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:48,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:48,994 INFO L87 Difference]: Start difference. First operand 824 states. Second operand 4 states. [2019-10-15 01:11:49,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:49,203 INFO L93 Difference]: Finished difference Result 1297 states and 2071 transitions. [2019-10-15 01:11:49,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:49,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2019-10-15 01:11:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:49,240 INFO L225 Difference]: With dead ends: 1297 [2019-10-15 01:11:49,241 INFO L226 Difference]: Without dead ends: 657 [2019-10-15 01:11:49,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-15 01:11:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-15 01:11:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-15 01:11:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1037 transitions. [2019-10-15 01:11:49,397 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1037 transitions. Word has length 87 [2019-10-15 01:11:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:49,398 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1037 transitions. [2019-10-15 01:11:49,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1037 transitions. [2019-10-15 01:11:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-15 01:11:49,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:49,406 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:49,406 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:49,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:49,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1802747224, now seen corresponding path program 1 times [2019-10-15 01:11:49,407 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:49,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088378267] [2019-10-15 01:11:49,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:49,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:49,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:49,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088378267] [2019-10-15 01:11:49,619 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:49,619 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:49,620 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329801434] [2019-10-15 01:11:49,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:49,628 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:49,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:49,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:49,629 INFO L87 Difference]: Start difference. First operand 657 states and 1037 transitions. Second operand 4 states. [2019-10-15 01:11:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:49,715 INFO L93 Difference]: Finished difference Result 1277 states and 2032 transitions. [2019-10-15 01:11:49,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:49,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-15 01:11:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:49,726 INFO L225 Difference]: With dead ends: 1277 [2019-10-15 01:11:49,726 INFO L226 Difference]: Without dead ends: 657 [2019-10-15 01:11:49,738 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:49,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-15 01:11:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-15 01:11:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-15 01:11:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1036 transitions. [2019-10-15 01:11:49,787 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1036 transitions. Word has length 90 [2019-10-15 01:11:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:49,788 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1036 transitions. [2019-10-15 01:11:49,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1036 transitions. [2019-10-15 01:11:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 01:11:49,790 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:49,790 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:49,791 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:49,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:49,791 INFO L82 PathProgramCache]: Analyzing trace with hash 464088220, now seen corresponding path program 1 times [2019-10-15 01:11:49,791 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:49,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244309592] [2019-10-15 01:11:49,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:49,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:49,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:49,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244309592] [2019-10-15 01:11:49,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:49,991 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:49,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282374477] [2019-10-15 01:11:49,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:49,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:49,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:49,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:49,993 INFO L87 Difference]: Start difference. First operand 657 states and 1036 transitions. Second operand 4 states. [2019-10-15 01:11:50,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:50,053 INFO L93 Difference]: Finished difference Result 1277 states and 2031 transitions. [2019-10-15 01:11:50,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:50,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-15 01:11:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:50,058 INFO L225 Difference]: With dead ends: 1277 [2019-10-15 01:11:50,059 INFO L226 Difference]: Without dead ends: 657 [2019-10-15 01:11:50,061 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-15 01:11:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-15 01:11:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-15 01:11:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1035 transitions. [2019-10-15 01:11:50,089 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1035 transitions. Word has length 91 [2019-10-15 01:11:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:50,089 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1035 transitions. [2019-10-15 01:11:50,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1035 transitions. [2019-10-15 01:11:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:11:50,091 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:50,091 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:50,092 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1512177068, now seen corresponding path program 1 times [2019-10-15 01:11:50,092 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:50,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658755661] [2019-10-15 01:11:50,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:50,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658755661] [2019-10-15 01:11:50,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:50,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:50,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015086245] [2019-10-15 01:11:50,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:50,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:50,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:50,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:50,204 INFO L87 Difference]: Start difference. First operand 657 states and 1035 transitions. Second operand 4 states. [2019-10-15 01:11:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:50,274 INFO L93 Difference]: Finished difference Result 1277 states and 2030 transitions. [2019-10-15 01:11:50,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:50,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-15 01:11:50,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:50,288 INFO L225 Difference]: With dead ends: 1277 [2019-10-15 01:11:50,289 INFO L226 Difference]: Without dead ends: 657 [2019-10-15 01:11:50,294 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:50,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-15 01:11:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-15 01:11:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-15 01:11:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1034 transitions. [2019-10-15 01:11:50,328 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1034 transitions. Word has length 92 [2019-10-15 01:11:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:50,329 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1034 transitions. [2019-10-15 01:11:50,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1034 transitions. [2019-10-15 01:11:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:11:50,334 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:50,334 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:50,335 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:50,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:50,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1779400680, now seen corresponding path program 1 times [2019-10-15 01:11:50,337 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:50,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63954335] [2019-10-15 01:11:50,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:50,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63954335] [2019-10-15 01:11:50,462 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:50,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:50,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967215015] [2019-10-15 01:11:50,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:50,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:50,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:50,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:50,465 INFO L87 Difference]: Start difference. First operand 657 states and 1034 transitions. Second operand 4 states. [2019-10-15 01:11:50,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:50,524 INFO L93 Difference]: Finished difference Result 1277 states and 2029 transitions. [2019-10-15 01:11:50,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:50,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2019-10-15 01:11:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:50,533 INFO L225 Difference]: With dead ends: 1277 [2019-10-15 01:11:50,534 INFO L226 Difference]: Without dead ends: 657 [2019-10-15 01:11:50,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-15 01:11:50,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2019-10-15 01:11:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-10-15 01:11:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1033 transitions. [2019-10-15 01:11:50,633 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1033 transitions. Word has length 93 [2019-10-15 01:11:50,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:50,634 INFO L462 AbstractCegarLoop]: Abstraction has 657 states and 1033 transitions. [2019-10-15 01:11:50,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:50,634 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1033 transitions. [2019-10-15 01:11:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:11:50,637 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:50,637 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:50,638 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:50,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:50,638 INFO L82 PathProgramCache]: Analyzing trace with hash -605939888, now seen corresponding path program 1 times [2019-10-15 01:11:50,638 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:50,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718359909] [2019-10-15 01:11:50,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:50,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:50,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:50,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718359909] [2019-10-15 01:11:50,846 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:50,846 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:11:50,846 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734442793] [2019-10-15 01:11:50,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:11:50,848 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:50,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:11:50,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:11:50,849 INFO L87 Difference]: Start difference. First operand 657 states and 1033 transitions. Second operand 10 states. [2019-10-15 01:11:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:51,046 INFO L93 Difference]: Finished difference Result 1235 states and 1949 transitions. [2019-10-15 01:11:51,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:11:51,047 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-10-15 01:11:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:51,052 INFO L225 Difference]: With dead ends: 1235 [2019-10-15 01:11:51,052 INFO L226 Difference]: Without dead ends: 666 [2019-10-15 01:11:51,056 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:11:51,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2019-10-15 01:11:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 664. [2019-10-15 01:11:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2019-10-15 01:11:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1042 transitions. [2019-10-15 01:11:51,087 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1042 transitions. Word has length 94 [2019-10-15 01:11:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:51,090 INFO L462 AbstractCegarLoop]: Abstraction has 664 states and 1042 transitions. [2019-10-15 01:11:51,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:11:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1042 transitions. [2019-10-15 01:11:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:11:51,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:51,093 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:51,093 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:51,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:51,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1758408303, now seen corresponding path program 1 times [2019-10-15 01:11:51,094 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:51,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596638194] [2019-10-15 01:11:51,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:51,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596638194] [2019-10-15 01:11:51,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:51,186 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:11:51,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266887571] [2019-10-15 01:11:51,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:11:51,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:51,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:11:51,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:11:51,187 INFO L87 Difference]: Start difference. First operand 664 states and 1042 transitions. Second operand 4 states. [2019-10-15 01:11:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:51,241 INFO L93 Difference]: Finished difference Result 1283 states and 2035 transitions. [2019-10-15 01:11:51,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:11:51,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2019-10-15 01:11:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:51,248 INFO L225 Difference]: With dead ends: 1283 [2019-10-15 01:11:51,248 INFO L226 Difference]: Without dead ends: 651 [2019-10-15 01:11:51,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:11:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-15 01:11:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-15 01:11:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-15 01:11:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1019 transitions. [2019-10-15 01:11:51,274 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1019 transitions. Word has length 94 [2019-10-15 01:11:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:51,275 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1019 transitions. [2019-10-15 01:11:51,275 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:11:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1019 transitions. [2019-10-15 01:11:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:11:51,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:51,278 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:51,279 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:51,279 INFO L82 PathProgramCache]: Analyzing trace with hash -795855418, now seen corresponding path program 1 times [2019-10-15 01:11:51,279 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:51,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731619678] [2019-10-15 01:11:51,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:51,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731619678] [2019-10-15 01:11:51,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:51,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:51,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584614893] [2019-10-15 01:11:51,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:51,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:51,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:51,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:51,476 INFO L87 Difference]: Start difference. First operand 651 states and 1019 transitions. Second operand 6 states. [2019-10-15 01:11:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:51,680 INFO L93 Difference]: Finished difference Result 1223 states and 1927 transitions. [2019-10-15 01:11:51,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:51,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-15 01:11:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:51,686 INFO L225 Difference]: With dead ends: 1223 [2019-10-15 01:11:51,690 INFO L226 Difference]: Without dead ends: 651 [2019-10-15 01:11:51,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-15 01:11:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-15 01:11:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-15 01:11:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1015 transitions. [2019-10-15 01:11:51,725 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1015 transitions. Word has length 95 [2019-10-15 01:11:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:51,725 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1015 transitions. [2019-10-15 01:11:51,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1015 transitions. [2019-10-15 01:11:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:11:51,728 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:51,729 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:51,729 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:51,729 INFO L82 PathProgramCache]: Analyzing trace with hash 26339251, now seen corresponding path program 1 times [2019-10-15 01:11:51,729 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:51,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099436214] [2019-10-15 01:11:51,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:51,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:51,842 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099436214] [2019-10-15 01:11:51,842 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:51,842 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:51,843 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071006590] [2019-10-15 01:11:51,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:51,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:51,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:51,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:51,844 INFO L87 Difference]: Start difference. First operand 651 states and 1015 transitions. Second operand 6 states. [2019-10-15 01:11:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:52,038 INFO L93 Difference]: Finished difference Result 1223 states and 1923 transitions. [2019-10-15 01:11:52,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:52,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-15 01:11:52,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:52,043 INFO L225 Difference]: With dead ends: 1223 [2019-10-15 01:11:52,043 INFO L226 Difference]: Without dead ends: 651 [2019-10-15 01:11:52,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:52,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-15 01:11:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-15 01:11:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-15 01:11:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1011 transitions. [2019-10-15 01:11:52,080 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1011 transitions. Word has length 96 [2019-10-15 01:11:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:52,081 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1011 transitions. [2019-10-15 01:11:52,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1011 transitions. [2019-10-15 01:11:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:11:52,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:52,083 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:52,083 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:52,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:52,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1115555883, now seen corresponding path program 1 times [2019-10-15 01:11:52,084 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:52,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098262952] [2019-10-15 01:11:52,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:52,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098262952] [2019-10-15 01:11:52,200 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:52,200 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:52,200 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800396493] [2019-10-15 01:11:52,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:52,201 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:52,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:52,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:52,202 INFO L87 Difference]: Start difference. First operand 651 states and 1011 transitions. Second operand 6 states. [2019-10-15 01:11:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:52,424 INFO L93 Difference]: Finished difference Result 1223 states and 1919 transitions. [2019-10-15 01:11:52,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:52,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-15 01:11:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:52,429 INFO L225 Difference]: With dead ends: 1223 [2019-10-15 01:11:52,430 INFO L226 Difference]: Without dead ends: 651 [2019-10-15 01:11:52,437 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-15 01:11:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-15 01:11:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-15 01:11:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1007 transitions. [2019-10-15 01:11:52,460 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1007 transitions. Word has length 97 [2019-10-15 01:11:52,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:52,460 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 1007 transitions. [2019-10-15 01:11:52,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:52,460 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1007 transitions. [2019-10-15 01:11:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:11:52,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:52,462 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:52,462 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1213864789, now seen corresponding path program 1 times [2019-10-15 01:11:52,463 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:52,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433392724] [2019-10-15 01:11:52,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:52,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433392724] [2019-10-15 01:11:52,588 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:52,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:11:52,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848101383] [2019-10-15 01:11:52,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:11:52,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:52,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:11:52,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:11:52,590 INFO L87 Difference]: Start difference. First operand 651 states and 1007 transitions. Second operand 7 states. [2019-10-15 01:11:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:52,664 INFO L93 Difference]: Finished difference Result 1223 states and 1915 transitions. [2019-10-15 01:11:52,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:11:52,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-10-15 01:11:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:52,670 INFO L225 Difference]: With dead ends: 1223 [2019-10-15 01:11:52,670 INFO L226 Difference]: Without dead ends: 630 [2019-10-15 01:11:52,674 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:52,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-15 01:11:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-15 01:11:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-15 01:11:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 973 transitions. [2019-10-15 01:11:52,695 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 973 transitions. Word has length 97 [2019-10-15 01:11:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:52,695 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 973 transitions. [2019-10-15 01:11:52,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:11:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 973 transitions. [2019-10-15 01:11:52,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:11:52,697 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:52,697 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:52,697 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:52,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1892518776, now seen corresponding path program 1 times [2019-10-15 01:11:52,698 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:52,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351093614] [2019-10-15 01:11:52,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,699 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:52,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351093614] [2019-10-15 01:11:52,833 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:52,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:52,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113479551] [2019-10-15 01:11:52,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:52,835 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:52,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:52,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:52,836 INFO L87 Difference]: Start difference. First operand 630 states and 973 transitions. Second operand 6 states. [2019-10-15 01:11:52,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:52,959 INFO L93 Difference]: Finished difference Result 1202 states and 1881 transitions. [2019-10-15 01:11:52,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:52,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-15 01:11:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:52,964 INFO L225 Difference]: With dead ends: 1202 [2019-10-15 01:11:52,964 INFO L226 Difference]: Without dead ends: 630 [2019-10-15 01:11:52,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-15 01:11:52,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-15 01:11:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-15 01:11:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 972 transitions. [2019-10-15 01:11:52,994 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 972 transitions. Word has length 98 [2019-10-15 01:11:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:52,996 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 972 transitions. [2019-10-15 01:11:52,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 972 transitions. [2019-10-15 01:11:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:11:52,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:52,997 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:52,998 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1579550352, now seen corresponding path program 1 times [2019-10-15 01:11:52,998 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:52,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892138280] [2019-10-15 01:11:52,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:52,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:53,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892138280] [2019-10-15 01:11:53,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:53,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:53,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225170842] [2019-10-15 01:11:53,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:53,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:53,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:53,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:53,113 INFO L87 Difference]: Start difference. First operand 630 states and 972 transitions. Second operand 6 states. [2019-10-15 01:11:53,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:53,223 INFO L93 Difference]: Finished difference Result 1202 states and 1880 transitions. [2019-10-15 01:11:53,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:53,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-15 01:11:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:53,228 INFO L225 Difference]: With dead ends: 1202 [2019-10-15 01:11:53,228 INFO L226 Difference]: Without dead ends: 630 [2019-10-15 01:11:53,231 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-15 01:11:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-15 01:11:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-15 01:11:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 971 transitions. [2019-10-15 01:11:53,255 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 971 transitions. Word has length 99 [2019-10-15 01:11:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:53,256 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 971 transitions. [2019-10-15 01:11:53,256 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:53,256 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 971 transitions. [2019-10-15 01:11:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 01:11:53,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:53,258 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] [2019-10-15 01:11:53,258 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:53,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1838449469, now seen corresponding path program 1 times [2019-10-15 01:11:53,258 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:53,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768212034] [2019-10-15 01:11:53,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:53,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:53,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:53,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768212034] [2019-10-15 01:11:53,442 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:53,442 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:11:53,442 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451685737] [2019-10-15 01:11:53,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:11:53,443 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:53,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:11:53,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:11:53,444 INFO L87 Difference]: Start difference. First operand 630 states and 971 transitions. Second operand 12 states. [2019-10-15 01:11:53,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:53,632 INFO L93 Difference]: Finished difference Result 1203 states and 1879 transitions. [2019-10-15 01:11:53,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:11:53,633 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2019-10-15 01:11:53,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:53,638 INFO L225 Difference]: With dead ends: 1203 [2019-10-15 01:11:53,638 INFO L226 Difference]: Without dead ends: 630 [2019-10-15 01:11:53,641 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:11:53,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-15 01:11:53,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-15 01:11:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-15 01:11:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 970 transitions. [2019-10-15 01:11:53,661 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 970 transitions. Word has length 100 [2019-10-15 01:11:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:53,661 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 970 transitions. [2019-10-15 01:11:53,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:11:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 970 transitions. [2019-10-15 01:11:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-15 01:11:53,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:53,663 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] [2019-10-15 01:11:53,663 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:53,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:53,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1351924293, now seen corresponding path program 1 times [2019-10-15 01:11:53,664 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:53,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064508766] [2019-10-15 01:11:53,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:53,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:53,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:11:53,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064508766] [2019-10-15 01:11:53,861 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:53,861 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:11:53,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537002766] [2019-10-15 01:11:53,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:11:53,862 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:53,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:11:53,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:11:53,863 INFO L87 Difference]: Start difference. First operand 630 states and 970 transitions. Second operand 6 states. [2019-10-15 01:11:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:11:57,366 INFO L93 Difference]: Finished difference Result 1863 states and 2953 transitions. [2019-10-15 01:11:57,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:11:57,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2019-10-15 01:11:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:11:57,378 INFO L225 Difference]: With dead ends: 1863 [2019-10-15 01:11:57,378 INFO L226 Difference]: Without dead ends: 1299 [2019-10-15 01:11:57,382 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:11:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2019-10-15 01:11:57,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1172. [2019-10-15 01:11:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2019-10-15 01:11:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1850 transitions. [2019-10-15 01:11:57,432 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1850 transitions. Word has length 101 [2019-10-15 01:11:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:11:57,433 INFO L462 AbstractCegarLoop]: Abstraction has 1172 states and 1850 transitions. [2019-10-15 01:11:57,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:11:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1850 transitions. [2019-10-15 01:11:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:11:57,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:11:57,439 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:11:57,439 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:11:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:11:57,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1530865345, now seen corresponding path program 1 times [2019-10-15 01:11:57,440 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:11:57,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549812921] [2019-10-15 01:11:57,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:57,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:11:57,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:11:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:11:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:11:57,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549812921] [2019-10-15 01:11:57,634 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:11:57,634 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:11:57,634 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874473570] [2019-10-15 01:11:57,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:11:57,635 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:11:57,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:11:57,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:11:57,635 INFO L87 Difference]: Start difference. First operand 1172 states and 1850 transitions. Second operand 12 states. [2019-10-15 01:12:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:08,487 INFO L93 Difference]: Finished difference Result 3848 states and 6081 transitions. [2019-10-15 01:12:08,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 01:12:08,489 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2019-10-15 01:12:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:08,507 INFO L225 Difference]: With dead ends: 3848 [2019-10-15 01:12:08,507 INFO L226 Difference]: Without dead ends: 2742 [2019-10-15 01:12:08,514 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:12:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2019-10-15 01:12:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2684. [2019-10-15 01:12:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2684 states. [2019-10-15 01:12:08,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4196 transitions. [2019-10-15 01:12:08,679 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4196 transitions. Word has length 159 [2019-10-15 01:12:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:08,680 INFO L462 AbstractCegarLoop]: Abstraction has 2684 states and 4196 transitions. [2019-10-15 01:12:08,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:12:08,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4196 transitions. [2019-10-15 01:12:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 01:12:08,687 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:08,688 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:08,688 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:08,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1845349951, now seen corresponding path program 1 times [2019-10-15 01:12:08,689 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:08,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742338405] [2019-10-15 01:12:08,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:08,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:08,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:12:08,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742338405] [2019-10-15 01:12:08,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400657190] [2019-10-15 01:12:08,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:09,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 3076 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:12:09,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:12:09,754 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:12:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:12:10,065 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:12:10,065 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:12:10,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901220233] [2019-10-15 01:12:10,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:10,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:10,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:10,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:12:10,068 INFO L87 Difference]: Start difference. First operand 2684 states and 4196 transitions. Second operand 3 states. [2019-10-15 01:12:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:10,231 INFO L93 Difference]: Finished difference Result 6746 states and 10695 transitions. [2019-10-15 01:12:10,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:10,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-10-15 01:12:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:10,256 INFO L225 Difference]: With dead ends: 6746 [2019-10-15 01:12:10,256 INFO L226 Difference]: Without dead ends: 4128 [2019-10-15 01:12:10,269 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:12:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2019-10-15 01:12:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 4126. [2019-10-15 01:12:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2019-10-15 01:12:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 6513 transitions. [2019-10-15 01:12:10,471 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 6513 transitions. Word has length 160 [2019-10-15 01:12:10,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:10,474 INFO L462 AbstractCegarLoop]: Abstraction has 4126 states and 6513 transitions. [2019-10-15 01:12:10,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:10,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 6513 transitions. [2019-10-15 01:12:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:12:10,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:10,481 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:10,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:10,695 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:10,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:10,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1370078289, now seen corresponding path program 1 times [2019-10-15 01:12:10,696 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:10,696 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981921748] [2019-10-15 01:12:10,696 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:10,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:10,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:12:10,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981921748] [2019-10-15 01:12:10,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845084253] [2019-10-15 01:12:10,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:11,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:12:11,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:12:11,599 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:12:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:12:11,834 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:12:11,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:12:11,834 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039813910] [2019-10-15 01:12:11,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:11,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:11,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:11,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:12:11,836 INFO L87 Difference]: Start difference. First operand 4126 states and 6513 transitions. Second operand 3 states. [2019-10-15 01:12:12,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:12,091 INFO L93 Difference]: Finished difference Result 11074 states and 17802 transitions. [2019-10-15 01:12:12,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:12,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:12:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:12,153 INFO L225 Difference]: With dead ends: 11074 [2019-10-15 01:12:12,153 INFO L226 Difference]: Without dead ends: 7014 [2019-10-15 01:12:12,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:12:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2019-10-15 01:12:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 7011. [2019-10-15 01:12:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7011 states. [2019-10-15 01:12:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 11238 transitions. [2019-10-15 01:12:12,474 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 11238 transitions. Word has length 161 [2019-10-15 01:12:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:12,475 INFO L462 AbstractCegarLoop]: Abstraction has 7011 states and 11238 transitions. [2019-10-15 01:12:12,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 11238 transitions. [2019-10-15 01:12:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:12:12,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:12,481 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:12,697 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:12,697 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:12,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:12,698 INFO L82 PathProgramCache]: Analyzing trace with hash -478437439, now seen corresponding path program 1 times [2019-10-15 01:12:12,698 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:12,698 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875850184] [2019-10-15 01:12:12,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:12,698 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:12,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:12:12,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875850184] [2019-10-15 01:12:12,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17869842] [2019-10-15 01:12:12,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:13,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 3080 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:12:13,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:12:13,571 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:12:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:12:13,816 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:12:13,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-15 01:12:13,816 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35817629] [2019-10-15 01:12:13,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:13,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:13,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:12:13,818 INFO L87 Difference]: Start difference. First operand 7011 states and 11238 transitions. Second operand 3 states. [2019-10-15 01:12:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:14,157 INFO L93 Difference]: Finished difference Result 19731 states and 32456 transitions. [2019-10-15 01:12:14,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:14,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-15 01:12:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:14,246 INFO L225 Difference]: With dead ends: 19731 [2019-10-15 01:12:14,247 INFO L226 Difference]: Without dead ends: 12786 [2019-10-15 01:12:14,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:12:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12786 states. [2019-10-15 01:12:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12786 to 12782. [2019-10-15 01:12:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12782 states. [2019-10-15 01:12:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12782 states to 12782 states and 20972 transitions. [2019-10-15 01:12:15,531 INFO L78 Accepts]: Start accepts. Automaton has 12782 states and 20972 transitions. Word has length 162 [2019-10-15 01:12:15,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:15,532 INFO L462 AbstractCegarLoop]: Abstraction has 12782 states and 20972 transitions. [2019-10-15 01:12:15,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 12782 states and 20972 transitions. [2019-10-15 01:12:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-15 01:12:15,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:15,541 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:15,749 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:15,749 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:15,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1947846253, now seen corresponding path program 1 times [2019-10-15 01:12:15,750 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:15,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152947942] [2019-10-15 01:12:15,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:15,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:15,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:12:15,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152947942] [2019-10-15 01:12:15,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085426952] [2019-10-15 01:12:15,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:12:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:16,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 3082 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:12:16,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:12:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:12:16,574 INFO L321 TraceCheckSpWp]: Computing backward predicates...