java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:10:01,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:10:01,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:10:01,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:10:01,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:10:01,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:10:01,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:10:01,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:10:01,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:10:01,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:10:01,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:10:01,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:10:01,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:10:01,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:10:01,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:10:01,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:10:01,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:10:01,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:10:01,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:10:01,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:10:01,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:10:01,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:10:01,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:10:01,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:10:01,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:10:01,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:10:01,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:10:01,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:10:01,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:10:01,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:10:01,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:10:01,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:10:01,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:10:01,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:10:01,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:10:01,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:10:01,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:10:01,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:10:01,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:10:01,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:10:01,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:10:01,517 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 01:10:01,531 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:10:01,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:10:01,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:10:01,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:10:01,533 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:10:01,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:10:01,534 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:10:01,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:10:01,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:10:01,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:10:01,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:10:01,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:10:01,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:10:01,535 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:10:01,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:10:01,535 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:10:01,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:10:01,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:10:01,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:10:01,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:10:01,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:10:01,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:10:01,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:10:01,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:10:01,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:10:01,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:10:01,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:10:01,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:10:01,538 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 01:10:01,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:10:01,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:10:01,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:10:01,868 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:10:01,869 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:10:01,869 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c [2019-10-15 01:10:01,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aef57c236/ac1739e041fd46db81d373a5e77ac002/FLAGfae5030a6 [2019-10-15 01:10:02,552 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:10:02,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c [2019-10-15 01:10:02,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aef57c236/ac1739e041fd46db81d373a5e77ac002/FLAGfae5030a6 [2019-10-15 01:10:02,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aef57c236/ac1739e041fd46db81d373a5e77ac002 [2019-10-15 01:10:02,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:10:02,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:10:02,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:02,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:10:02,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:10:02,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:02" (1/1) ... [2019-10-15 01:10:02,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9061149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:02, skipping insertion in model container [2019-10-15 01:10:02,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:10:02" (1/1) ... [2019-10-15 01:10:02,819 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:10:02,886 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:10:03,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:03,642 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:10:03,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:10:03,845 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:10:03,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03 WrapperNode [2019-10-15 01:10:03,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:10:03,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:10:03,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:10:03,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:10:03,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03" (1/1) ... [2019-10-15 01:10:03,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03" (1/1) ... [2019-10-15 01:10:03,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03" (1/1) ... [2019-10-15 01:10:03,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03" (1/1) ... [2019-10-15 01:10:04,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03" (1/1) ... [2019-10-15 01:10:04,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03" (1/1) ... [2019-10-15 01:10:04,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03" (1/1) ... [2019-10-15 01:10:04,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:10:04,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:10:04,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:10:04,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:10:04,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03" (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 01:10:04,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:10:04,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:10:04,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:10:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:10:04,243 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:10:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:10:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:10:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:10:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:10:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:10:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:10:04,247 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:10:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:10:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:10:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:10:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:10:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:10:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:10:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:10:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:10:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:10:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:10:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:10:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:10:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:10:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:10:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:10:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:10:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:10:04,256 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:10:04,256 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:10:04,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:10:04,256 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:10:04,257 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:10:04,257 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:04,258 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:10:04,258 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:10:04,259 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:10:04,259 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:10:04,259 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:10:04,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:10:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:10:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:10:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:10:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:10:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:10:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:10:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:10:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:10:04,263 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:10:04,263 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:10:04,263 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:10:04,263 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:10:04,263 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:10:04,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:10:04,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:10:04,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:10:04,265 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:10:04,266 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:10:04,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:10:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:10:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:10:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:10:04,267 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:10:04,268 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:10:04,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:10:04,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:10:04,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:10:04,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:10:04,270 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:10:04,270 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:10:04,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:10:04,271 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:10:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:10:04,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:10:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:10:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:10:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:10:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:10:04,274 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:10:04,275 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:10:04,276 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:10:04,276 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:10:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:10:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:10:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:10:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:10:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:10:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:10:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:10:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:10:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:10:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:10:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:10:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:10:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:10:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:10:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:10:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:10:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:10:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:10:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:10:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:10:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:10:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:10:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:10:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:10:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:10:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:10:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:10:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:10:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:10:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:10:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:10:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:10:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:10:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:10:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:10:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:10:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:10:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:10:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:10:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:10:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:10:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:10:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:10:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:10:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:10:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:10:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:10:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:10:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:10:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:10:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:10:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:10:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:10:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:10:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:10:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:10:04,303 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:10:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:10:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:10:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:10:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:10:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:10:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:10:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:10:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:10:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:10:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:10:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:10:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:10:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:10:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:10:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:10:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:10:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:10:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:10:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:10:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:10:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:10:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:10:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:10:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:10:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:10:07,169 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:10:07,169 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:10:07,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:07 BoogieIcfgContainer [2019-10-15 01:10:07,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:10:07,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:10:07,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:10:07,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:10:07,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:10:02" (1/3) ... [2019-10-15 01:10:07,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f244eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:07, skipping insertion in model container [2019-10-15 01:10:07,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:10:03" (2/3) ... [2019-10-15 01:10:07,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f244eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:10:07, skipping insertion in model container [2019-10-15 01:10:07,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:10:07" (3/3) ... [2019-10-15 01:10:07,185 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2019-10-15 01:10:07,198 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:10:07,212 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:10:07,224 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:10:07,271 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:10:07,272 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:10:07,272 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:10:07,272 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:10:07,272 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:10:07,272 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:10:07,273 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:10:07,273 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:10:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states. [2019-10-15 01:10:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-15 01:10:07,351 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:07,353 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:07,357 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:07,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:07,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1653197611, now seen corresponding path program 1 times [2019-10-15 01:10:07,375 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:07,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094010188] [2019-10-15 01:10:07,375 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:07,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:07,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:08,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094010188] [2019-10-15 01:10:08,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:08,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:08,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613574266] [2019-10-15 01:10:08,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:08,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:08,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:08,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:08,074 INFO L87 Difference]: Start difference. First operand 789 states. Second operand 4 states. [2019-10-15 01:10:08,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:08,301 INFO L93 Difference]: Finished difference Result 1241 states and 2003 transitions. [2019-10-15 01:10:08,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:08,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-15 01:10:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:08,343 INFO L225 Difference]: With dead ends: 1241 [2019-10-15 01:10:08,343 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:10:08,353 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:10:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:10:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:10:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1003 transitions. [2019-10-15 01:10:08,466 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1003 transitions. Word has length 124 [2019-10-15 01:10:08,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:08,466 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1003 transitions. [2019-10-15 01:10:08,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1003 transitions. [2019-10-15 01:10:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-15 01:10:08,475 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:08,475 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:08,476 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:08,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1610008943, now seen corresponding path program 1 times [2019-10-15 01:10:08,477 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:08,477 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920056840] [2019-10-15 01:10:08,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:08,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:08,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:08,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920056840] [2019-10-15 01:10:08,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:08,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:08,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971882715] [2019-10-15 01:10:08,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:08,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:08,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:08,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:08,775 INFO L87 Difference]: Start difference. First operand 629 states and 1003 transitions. Second operand 4 states. [2019-10-15 01:10:08,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:08,881 INFO L93 Difference]: Finished difference Result 1221 states and 1964 transitions. [2019-10-15 01:10:08,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:08,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-15 01:10:08,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:08,889 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:10:08,889 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:10:08,893 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:10:08,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:10:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:10:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1002 transitions. [2019-10-15 01:10:08,954 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1002 transitions. Word has length 127 [2019-10-15 01:10:08,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:08,955 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1002 transitions. [2019-10-15 01:10:08,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:08,955 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1002 transitions. [2019-10-15 01:10:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-15 01:10:08,961 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:08,961 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:08,962 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:08,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:08,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1101854388, now seen corresponding path program 1 times [2019-10-15 01:10:08,963 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:08,963 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337171594] [2019-10-15 01:10:08,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:08,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:08,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:09,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337171594] [2019-10-15 01:10:09,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:09,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:09,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060418056] [2019-10-15 01:10:09,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:09,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:09,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:09,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:09,281 INFO L87 Difference]: Start difference. First operand 629 states and 1002 transitions. Second operand 4 states. [2019-10-15 01:10:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:09,367 INFO L93 Difference]: Finished difference Result 1221 states and 1963 transitions. [2019-10-15 01:10:09,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:09,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-15 01:10:09,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:09,375 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:10:09,375 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:10:09,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:09,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:10:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:10:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:10:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1001 transitions. [2019-10-15 01:10:09,439 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1001 transitions. Word has length 128 [2019-10-15 01:10:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:09,441 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1001 transitions. [2019-10-15 01:10:09,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1001 transitions. [2019-10-15 01:10:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-15 01:10:09,449 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:09,450 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:09,450 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:09,451 INFO L82 PathProgramCache]: Analyzing trace with hash -862468589, now seen corresponding path program 1 times [2019-10-15 01:10:09,451 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:09,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626373818] [2019-10-15 01:10:09,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:09,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:09,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:09,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626373818] [2019-10-15 01:10:09,636 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:09,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:09,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943778609] [2019-10-15 01:10:09,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:09,639 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:09,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:09,640 INFO L87 Difference]: Start difference. First operand 629 states and 1001 transitions. Second operand 4 states. [2019-10-15 01:10:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:09,733 INFO L93 Difference]: Finished difference Result 1221 states and 1962 transitions. [2019-10-15 01:10:09,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:09,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-10-15 01:10:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:09,741 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:10:09,741 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:10:09,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:10:09,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:10:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:10:09,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1000 transitions. [2019-10-15 01:10:09,779 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1000 transitions. Word has length 129 [2019-10-15 01:10:09,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:09,781 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1000 transitions. [2019-10-15 01:10:09,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1000 transitions. [2019-10-15 01:10:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-15 01:10:09,790 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:09,790 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:09,790 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:09,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:09,791 INFO L82 PathProgramCache]: Analyzing trace with hash 671327024, now seen corresponding path program 1 times [2019-10-15 01:10:09,791 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:09,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543547133] [2019-10-15 01:10:09,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:09,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:09,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:10,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543547133] [2019-10-15 01:10:10,005 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:10,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:10,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790199616] [2019-10-15 01:10:10,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:10,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:10,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:10,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:10,008 INFO L87 Difference]: Start difference. First operand 629 states and 1000 transitions. Second operand 4 states. [2019-10-15 01:10:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:10,079 INFO L93 Difference]: Finished difference Result 1221 states and 1961 transitions. [2019-10-15 01:10:10,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:10,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-10-15 01:10:10,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:10,086 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:10:10,086 INFO L226 Difference]: Without dead ends: 629 [2019-10-15 01:10:10,089 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-15 01:10:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-15 01:10:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-15 01:10:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 999 transitions. [2019-10-15 01:10:10,118 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 999 transitions. Word has length 130 [2019-10-15 01:10:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:10,118 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 999 transitions. [2019-10-15 01:10:10,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 999 transitions. [2019-10-15 01:10:10,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 01:10:10,124 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:10,125 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:10,128 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:10,129 INFO L82 PathProgramCache]: Analyzing trace with hash -617846089, now seen corresponding path program 1 times [2019-10-15 01:10:10,129 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:10,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717054023] [2019-10-15 01:10:10,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:10,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:10,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:10,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717054023] [2019-10-15 01:10:10,352 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:10,352 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:10:10,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159381275] [2019-10-15 01:10:10,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:10:10,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:10,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:10:10,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:10,354 INFO L87 Difference]: Start difference. First operand 629 states and 999 transitions. Second operand 10 states. [2019-10-15 01:10:10,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:10,539 INFO L93 Difference]: Finished difference Result 1179 states and 1881 transitions. [2019-10-15 01:10:10,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:10:10,539 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 131 [2019-10-15 01:10:10,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:10,548 INFO L225 Difference]: With dead ends: 1179 [2019-10-15 01:10:10,548 INFO L226 Difference]: Without dead ends: 638 [2019-10-15 01:10:10,552 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 01:10:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-10-15 01:10:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2019-10-15 01:10:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-15 01:10:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1008 transitions. [2019-10-15 01:10:10,585 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1008 transitions. Word has length 131 [2019-10-15 01:10:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:10,588 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 1008 transitions. [2019-10-15 01:10:10,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:10:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1008 transitions. [2019-10-15 01:10:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 01:10:10,597 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:10,597 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:10,597 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash 57846520, now seen corresponding path program 1 times [2019-10-15 01:10:10,598 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:10,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275551771] [2019-10-15 01:10:10,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:10,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:10,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:10,721 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275551771] [2019-10-15 01:10:10,721 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:10,721 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:10:10,722 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132565118] [2019-10-15 01:10:10,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:10:10,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:10:10,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:10:10,724 INFO L87 Difference]: Start difference. First operand 636 states and 1008 transitions. Second operand 4 states. [2019-10-15 01:10:10,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:10,847 INFO L93 Difference]: Finished difference Result 1227 states and 1967 transitions. [2019-10-15 01:10:10,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:10:10,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2019-10-15 01:10:10,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:10,854 INFO L225 Difference]: With dead ends: 1227 [2019-10-15 01:10:10,854 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 01:10:10,858 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 01:10:10,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-15 01:10:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-15 01:10:10,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 985 transitions. [2019-10-15 01:10:10,885 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 985 transitions. Word has length 131 [2019-10-15 01:10:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:10,886 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 985 transitions. [2019-10-15 01:10:10,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:10:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 985 transitions. [2019-10-15 01:10:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 01:10:10,891 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:10,891 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:10,892 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1033600176, now seen corresponding path program 1 times [2019-10-15 01:10:10,892 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:10,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004605435] [2019-10-15 01:10:10,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:10,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:10,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:11,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004605435] [2019-10-15 01:10:11,051 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:11,052 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:11,052 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866207028] [2019-10-15 01:10:11,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:11,053 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:11,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:11,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:11,053 INFO L87 Difference]: Start difference. First operand 623 states and 985 transitions. Second operand 6 states. [2019-10-15 01:10:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:11,274 INFO L93 Difference]: Finished difference Result 1167 states and 1859 transitions. [2019-10-15 01:10:11,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:11,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-10-15 01:10:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:11,280 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:10:11,280 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 01:10:11,284 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:11,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 01:10:11,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-15 01:10:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-15 01:10:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 981 transitions. [2019-10-15 01:10:11,321 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 981 transitions. Word has length 132 [2019-10-15 01:10:11,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:11,321 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 981 transitions. [2019-10-15 01:10:11,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 981 transitions. [2019-10-15 01:10:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 01:10:11,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:11,331 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:11,331 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:11,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:11,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1073337876, now seen corresponding path program 1 times [2019-10-15 01:10:11,332 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:11,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280774294] [2019-10-15 01:10:11,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,332 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:11,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280774294] [2019-10-15 01:10:11,494 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:11,495 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:11,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519353556] [2019-10-15 01:10:11,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:11,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:11,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:11,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:11,497 INFO L87 Difference]: Start difference. First operand 623 states and 981 transitions. Second operand 6 states. [2019-10-15 01:10:11,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:11,710 INFO L93 Difference]: Finished difference Result 1167 states and 1855 transitions. [2019-10-15 01:10:11,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:11,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-15 01:10:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:11,716 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:10:11,716 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 01:10:11,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 01:10:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-15 01:10:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-15 01:10:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 977 transitions. [2019-10-15 01:10:11,744 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 977 transitions. Word has length 133 [2019-10-15 01:10:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:11,744 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 977 transitions. [2019-10-15 01:10:11,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:11,745 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 977 transitions. [2019-10-15 01:10:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 01:10:11,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:11,749 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:11,750 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1624657451, now seen corresponding path program 1 times [2019-10-15 01:10:11,750 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:11,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128359009] [2019-10-15 01:10:11,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,751 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:11,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:11,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128359009] [2019-10-15 01:10:11,936 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:11,936 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:11,936 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592883569] [2019-10-15 01:10:11,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:11,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:11,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:11,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:11,938 INFO L87 Difference]: Start difference. First operand 623 states and 977 transitions. Second operand 6 states. [2019-10-15 01:10:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:12,158 INFO L93 Difference]: Finished difference Result 1167 states and 1851 transitions. [2019-10-15 01:10:12,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:12,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2019-10-15 01:10:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:12,164 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:10:12,164 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 01:10:12,172 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 01:10:12,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-15 01:10:12,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-15 01:10:12,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 973 transitions. [2019-10-15 01:10:12,195 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 973 transitions. Word has length 134 [2019-10-15 01:10:12,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:12,196 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 973 transitions. [2019-10-15 01:10:12,196 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 973 transitions. [2019-10-15 01:10:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-15 01:10:12,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:12,200 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:12,201 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:12,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1879686741, now seen corresponding path program 1 times [2019-10-15 01:10:12,201 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:12,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71397345] [2019-10-15 01:10:12,202 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,202 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:12,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71397345] [2019-10-15 01:10:12,344 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:12,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:10:12,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169634464] [2019-10-15 01:10:12,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:10:12,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:12,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:10:12,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:12,346 INFO L87 Difference]: Start difference. First operand 623 states and 973 transitions. Second operand 7 states. [2019-10-15 01:10:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:12,436 INFO L93 Difference]: Finished difference Result 1167 states and 1847 transitions. [2019-10-15 01:10:12,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:10:12,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-10-15 01:10:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:12,442 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 01:10:12,442 INFO L226 Difference]: Without dead ends: 602 [2019-10-15 01:10:12,446 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-15 01:10:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-15 01:10:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-15 01:10:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 939 transitions. [2019-10-15 01:10:12,468 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 939 transitions. Word has length 134 [2019-10-15 01:10:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:12,468 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 939 transitions. [2019-10-15 01:10:12,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:10:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 939 transitions. [2019-10-15 01:10:12,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:10:12,472 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:12,473 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:12,473 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:12,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:12,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1196444495, now seen corresponding path program 1 times [2019-10-15 01:10:12,474 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:12,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351195657] [2019-10-15 01:10:12,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:12,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351195657] [2019-10-15 01:10:12,601 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:12,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:12,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105503112] [2019-10-15 01:10:12,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:12,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:12,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:12,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:12,603 INFO L87 Difference]: Start difference. First operand 602 states and 939 transitions. Second operand 6 states. [2019-10-15 01:10:12,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:12,722 INFO L93 Difference]: Finished difference Result 1146 states and 1813 transitions. [2019-10-15 01:10:12,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:12,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2019-10-15 01:10:12,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:12,727 INFO L225 Difference]: With dead ends: 1146 [2019-10-15 01:10:12,728 INFO L226 Difference]: Without dead ends: 602 [2019-10-15 01:10:12,731 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-15 01:10:12,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-15 01:10:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-15 01:10:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 938 transitions. [2019-10-15 01:10:12,757 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 938 transitions. Word has length 135 [2019-10-15 01:10:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:12,757 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 938 transitions. [2019-10-15 01:10:12,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:12,758 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 938 transitions. [2019-10-15 01:10:12,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:10:12,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:12,764 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:12,765 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:12,765 INFO L82 PathProgramCache]: Analyzing trace with hash 467494150, now seen corresponding path program 1 times [2019-10-15 01:10:12,765 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:12,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436615191] [2019-10-15 01:10:12,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:12,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:12,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436615191] [2019-10-15 01:10:12,943 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:12,943 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:12,943 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084563962] [2019-10-15 01:10:12,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:12,944 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:12,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:12,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:12,945 INFO L87 Difference]: Start difference. First operand 602 states and 938 transitions. Second operand 6 states. [2019-10-15 01:10:13,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:13,049 INFO L93 Difference]: Finished difference Result 1146 states and 1812 transitions. [2019-10-15 01:10:13,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:13,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-10-15 01:10:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:13,055 INFO L225 Difference]: With dead ends: 1146 [2019-10-15 01:10:13,055 INFO L226 Difference]: Without dead ends: 602 [2019-10-15 01:10:13,058 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:10:13,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-15 01:10:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-15 01:10:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-15 01:10:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 937 transitions. [2019-10-15 01:10:13,079 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 937 transitions. Word has length 136 [2019-10-15 01:10:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:13,079 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 937 transitions. [2019-10-15 01:10:13,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:13,080 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 937 transitions. [2019-10-15 01:10:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 01:10:13,084 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:13,084 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:13,085 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:13,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:13,085 INFO L82 PathProgramCache]: Analyzing trace with hash -994380662, now seen corresponding path program 1 times [2019-10-15 01:10:13,085 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:13,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762826076] [2019-10-15 01:10:13,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:13,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762826076] [2019-10-15 01:10:13,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:13,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:10:13,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963784684] [2019-10-15 01:10:13,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:10:13,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:13,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:10:13,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:10:13,279 INFO L87 Difference]: Start difference. First operand 602 states and 937 transitions. Second operand 12 states. [2019-10-15 01:10:13,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:13,464 INFO L93 Difference]: Finished difference Result 1147 states and 1811 transitions. [2019-10-15 01:10:13,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:10:13,464 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2019-10-15 01:10:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:13,469 INFO L225 Difference]: With dead ends: 1147 [2019-10-15 01:10:13,469 INFO L226 Difference]: Without dead ends: 602 [2019-10-15 01:10:13,472 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:10:13,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-15 01:10:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-15 01:10:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-15 01:10:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 936 transitions. [2019-10-15 01:10:13,497 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 936 transitions. Word has length 137 [2019-10-15 01:10:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:13,497 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 936 transitions. [2019-10-15 01:10:13,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:10:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 936 transitions. [2019-10-15 01:10:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:10:13,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:13,502 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:13,502 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:13,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1158171471, now seen corresponding path program 1 times [2019-10-15 01:10:13,503 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:13,503 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306000006] [2019-10-15 01:10:13,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,504 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:13,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:13,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306000006] [2019-10-15 01:10:13,655 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:13,655 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:10:13,655 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830041973] [2019-10-15 01:10:13,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:13,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:13,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:13,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:10:13,657 INFO L87 Difference]: Start difference. First operand 602 states and 936 transitions. Second operand 5 states. [2019-10-15 01:10:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:16,547 INFO L93 Difference]: Finished difference Result 1510 states and 2385 transitions. [2019-10-15 01:10:16,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:16,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-10-15 01:10:16,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:16,557 INFO L225 Difference]: With dead ends: 1510 [2019-10-15 01:10:16,558 INFO L226 Difference]: Without dead ends: 974 [2019-10-15 01:10:16,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:10:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2019-10-15 01:10:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 944. [2019-10-15 01:10:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2019-10-15 01:10:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1477 transitions. [2019-10-15 01:10:16,615 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1477 transitions. Word has length 138 [2019-10-15 01:10:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:16,615 INFO L462 AbstractCegarLoop]: Abstraction has 944 states and 1477 transitions. [2019-10-15 01:10:16,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1477 transitions. [2019-10-15 01:10:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:10:16,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:16,620 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:16,620 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:16,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1117496721, now seen corresponding path program 1 times [2019-10-15 01:10:16,621 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:16,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349241405] [2019-10-15 01:10:16,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:16,621 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:16,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:16,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349241405] [2019-10-15 01:10:16,796 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:16,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:16,796 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264903997] [2019-10-15 01:10:16,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:16,797 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:16,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:16,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:16,798 INFO L87 Difference]: Start difference. First operand 944 states and 1477 transitions. Second operand 6 states. [2019-10-15 01:10:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:20,880 INFO L93 Difference]: Finished difference Result 2860 states and 4638 transitions. [2019-10-15 01:10:20,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:10:20,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2019-10-15 01:10:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:20,894 INFO L225 Difference]: With dead ends: 2860 [2019-10-15 01:10:20,895 INFO L226 Difference]: Without dead ends: 1983 [2019-10-15 01:10:20,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2019-10-15 01:10:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1882. [2019-10-15 01:10:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2019-10-15 01:10:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2995 transitions. [2019-10-15 01:10:20,997 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2995 transitions. Word has length 138 [2019-10-15 01:10:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:20,997 INFO L462 AbstractCegarLoop]: Abstraction has 1882 states and 2995 transitions. [2019-10-15 01:10:20,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2995 transitions. [2019-10-15 01:10:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 01:10:21,002 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:21,002 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:21,002 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:21,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:21,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1503869869, now seen corresponding path program 1 times [2019-10-15 01:10:21,003 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:21,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133544722] [2019-10-15 01:10:21,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:21,004 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:21,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:21,143 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133544722] [2019-10-15 01:10:21,144 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:21,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:21,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652713192] [2019-10-15 01:10:21,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:21,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:21,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:21,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:21,146 INFO L87 Difference]: Start difference. First operand 1882 states and 2995 transitions. Second operand 6 states. [2019-10-15 01:10:25,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:25,509 INFO L93 Difference]: Finished difference Result 5959 states and 9792 transitions. [2019-10-15 01:10:25,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:10:25,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2019-10-15 01:10:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:25,539 INFO L225 Difference]: With dead ends: 5959 [2019-10-15 01:10:25,539 INFO L226 Difference]: Without dead ends: 4145 [2019-10-15 01:10:25,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:25,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2019-10-15 01:10:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 3900. [2019-10-15 01:10:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3900 states. [2019-10-15 01:10:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 6303 transitions. [2019-10-15 01:10:25,762 INFO L78 Accepts]: Start accepts. Automaton has 3900 states and 6303 transitions. Word has length 139 [2019-10-15 01:10:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:25,763 INFO L462 AbstractCegarLoop]: Abstraction has 3900 states and 6303 transitions. [2019-10-15 01:10:25,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3900 states and 6303 transitions. [2019-10-15 01:10:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:10:25,768 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:25,768 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:25,768 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:25,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:25,769 INFO L82 PathProgramCache]: Analyzing trace with hash 834330645, now seen corresponding path program 1 times [2019-10-15 01:10:25,769 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:25,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407015336] [2019-10-15 01:10:25,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:25,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:25,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:25,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407015336] [2019-10-15 01:10:25,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:25,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:25,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244996055] [2019-10-15 01:10:25,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:25,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:25,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:25,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:25,924 INFO L87 Difference]: Start difference. First operand 3900 states and 6303 transitions. Second operand 6 states. [2019-10-15 01:10:30,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:30,115 INFO L93 Difference]: Finished difference Result 12867 states and 21560 transitions. [2019-10-15 01:10:30,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:10:30,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-15 01:10:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:30,212 INFO L225 Difference]: With dead ends: 12867 [2019-10-15 01:10:30,213 INFO L226 Difference]: Without dead ends: 9037 [2019-10-15 01:10:30,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9037 states. [2019-10-15 01:10:30,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9037 to 8370. [2019-10-15 01:10:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8370 states. [2019-10-15 01:10:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8370 states to 8370 states and 13811 transitions. [2019-10-15 01:10:30,842 INFO L78 Accepts]: Start accepts. Automaton has 8370 states and 13811 transitions. Word has length 140 [2019-10-15 01:10:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:30,843 INFO L462 AbstractCegarLoop]: Abstraction has 8370 states and 13811 transitions. [2019-10-15 01:10:30,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:10:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 8370 states and 13811 transitions. [2019-10-15 01:10:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:10:30,848 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:30,848 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:30,849 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1791246257, now seen corresponding path program 1 times [2019-10-15 01:10:30,850 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:30,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412073121] [2019-10-15 01:10:30,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:30,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:30,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:10:31,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412073121] [2019-10-15 01:10:31,028 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:10:31,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:10:31,028 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004352182] [2019-10-15 01:10:31,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:10:31,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:31,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:10:31,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:10:31,031 INFO L87 Difference]: Start difference. First operand 8370 states and 13811 transitions. Second operand 6 states. [2019-10-15 01:10:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:35,777 INFO L93 Difference]: Finished difference Result 28969 states and 50072 transitions. [2019-10-15 01:10:35,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:10:35,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-10-15 01:10:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:35,957 INFO L225 Difference]: With dead ends: 28969 [2019-10-15 01:10:35,957 INFO L226 Difference]: Without dead ends: 20673 [2019-10-15 01:10:36,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:10:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20673 states.