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-f4eb214f-m [2019-10-13 21:10:57,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:10:57,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:10:57,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:10:57,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:10:57,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:10:57,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:10:57,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:10:57,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:10:57,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:10:57,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:10:57,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:10:57,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:10:57,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:10:57,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:10:57,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:10:57,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:10:57,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:10:57,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:10:57,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:10:57,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:10:57,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:10:57,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:10:57,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:10:57,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:10:57,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:10:57,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:10:57,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:10:57,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:10:57,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:10:57,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:10:57,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:10:57,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:10:57,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:10:57,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:10:57,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:10:57,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:10:57,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:10:57,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:10:57,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:10:57,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:10:57,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:10:57,691 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:10:57,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:10:57,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:10:57,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:10:57,693 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:10:57,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:10:57,693 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:10:57,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:10:57,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:10:57,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:10:57,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:10:57,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:10:57,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:10:57,694 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:10:57,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:10:57,695 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:10:57,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:10:57,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:10:57,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:10:57,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:10:57,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:10:57,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:10:57,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:10:57,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:10:57,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:10:57,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:10:57,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:10:57,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:10:57,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:10:57,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:10:57,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:10:57,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:10:57,999 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:10:57,999 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:10:58,000 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c [2019-10-13 21:10:58,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/011a72d38/54426cbe1dfe41139e2331defd37576c/FLAG51d547132 [2019-10-13 21:10:58,758 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:10:58,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c [2019-10-13 21:10:58,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/011a72d38/54426cbe1dfe41139e2331defd37576c/FLAG51d547132 [2019-10-13 21:10:58,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/011a72d38/54426cbe1dfe41139e2331defd37576c [2019-10-13 21:10:58,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:10:58,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:10:58,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:10:58,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:10:58,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:10:58,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:58" (1/1) ... [2019-10-13 21:10:58,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a425a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:58, skipping insertion in model container [2019-10-13 21:10:58,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:10:58" (1/1) ... [2019-10-13 21:10:58,920 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:10:59,007 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:10:59,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:10:59,795 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:10:59,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:10:59,990 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:10:59,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59 WrapperNode [2019-10-13 21:10:59,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:10:59,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:10:59,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:10:59,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:11:00,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59" (1/1) ... [2019-10-13 21:11:00,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59" (1/1) ... [2019-10-13 21:11:00,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59" (1/1) ... [2019-10-13 21:11:00,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59" (1/1) ... [2019-10-13 21:11:00,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59" (1/1) ... [2019-10-13 21:11:00,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59" (1/1) ... [2019-10-13 21:11:00,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59" (1/1) ... [2019-10-13 21:11:00,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:11:00,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:11:00,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:11:00,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:11:00,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:11:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:11:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:11:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 21:11:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 21:11:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 21:11:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 21:11:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 21:11:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 21:11:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 21:11:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 21:11:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:11:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:11:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 21:11:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 21:11:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 21:11:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 21:11:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 21:11:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 21:11:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 21:11:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 21:11:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 21:11:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 21:11:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 21:11:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 21:11:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 21:11:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 21:11:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 21:11:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 21:11:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 21:11:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:11:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 21:11:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 21:11:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 21:11:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:11:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 21:11:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 21:11:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 21:11:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 21:11:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 21:11:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:11:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:11:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:11:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 21:11:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 21:11:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 21:11:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 21:11:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 21:11:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 21:11:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 21:11:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 21:11:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 21:11:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 21:11:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 21:11:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 21:11:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 21:11:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 21:11:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:11:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 21:11:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:11:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 21:11:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 21:11:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 21:11:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 21:11:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 21:11:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 21:11:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 21:11:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 21:11:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 21:11:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:11:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:11:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:11:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:11:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:11:00,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:11:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 21:11:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 21:11:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 21:11:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 21:11:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 21:11:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 21:11:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 21:11:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 21:11:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:11:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 21:11:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 21:11:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:11:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:11:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 21:11:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 21:11:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 21:11:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 21:11:00,309 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 21:11:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 21:11:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 21:11:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 21:11:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 21:11:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 21:11:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 21:11:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 21:11:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 21:11:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 21:11:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 21:11:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 21:11:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 21:11:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 21:11:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 21:11:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 21:11:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 21:11:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 21:11:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 21:11:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 21:11:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 21:11:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 21:11:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 21:11:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 21:11:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 21:11:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 21:11:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 21:11:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:11:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 21:11:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:11:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:11:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:11:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:11:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:11:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:11:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:11:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:11:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:11:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:11:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:11:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:11:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:11:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:11:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:11:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:11:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:11:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 21:11:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 21:11:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 21:11:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 21:11:00,331 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 21:11:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 21:11:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 21:11:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 21:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 21:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 21:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 21:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 21:11:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 21:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 21:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 21:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 21:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:11:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:11:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:11:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:11:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 21:11:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 21:11:00,335 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:11:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:11:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:11:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:11:02,611 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:11:02,612 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 21:11:02,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:02 BoogieIcfgContainer [2019-10-13 21:11:02,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:11:02,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:11:02,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:11:02,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:11:02,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:10:58" (1/3) ... [2019-10-13 21:11:02,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dfec24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:02, skipping insertion in model container [2019-10-13 21:11:02,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:10:59" (2/3) ... [2019-10-13 21:11:02,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dfec24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:11:02, skipping insertion in model container [2019-10-13 21:11:02,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:11:02" (3/3) ... [2019-10-13 21:11:02,623 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2019-10-13 21:11:02,635 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:11:02,647 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:11:02,659 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:11:02,704 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:11:02,704 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:11:02,705 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:11:02,705 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:11:02,705 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:11:02,705 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:11:02,705 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:11:02,705 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:11:02,755 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states. [2019-10-13 21:11:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 21:11:02,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:02,792 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] [2019-10-13 21:11:02,796 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:02,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:02,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1653197611, now seen corresponding path program 1 times [2019-10-13 21:11:02,817 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:02,817 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964744404] [2019-10-13 21:11:02,817 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:02,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:02,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:03,496 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964744404] [2019-10-13 21:11:03,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:03,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:03,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297581075] [2019-10-13 21:11:03,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:03,509 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:03,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:03,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:03,531 INFO L87 Difference]: Start difference. First operand 789 states. Second operand 4 states. [2019-10-13 21:11:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:03,752 INFO L93 Difference]: Finished difference Result 1241 states and 2003 transitions. [2019-10-13 21:11:03,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:03,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-13 21:11:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:03,790 INFO L225 Difference]: With dead ends: 1241 [2019-10-13 21:11:03,790 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:11:03,804 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:11:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 21:11:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:11:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1003 transitions. [2019-10-13 21:11:03,932 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1003 transitions. Word has length 124 [2019-10-13 21:11:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:03,933 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1003 transitions. [2019-10-13 21:11:03,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1003 transitions. [2019-10-13 21:11:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 21:11:03,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:03,951 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] [2019-10-13 21:11:03,952 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:03,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:03,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1610008943, now seen corresponding path program 1 times [2019-10-13 21:11:03,952 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:03,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571946192] [2019-10-13 21:11:03,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:03,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:03,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:04,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571946192] [2019-10-13 21:11:04,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:04,240 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:04,240 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086704841] [2019-10-13 21:11:04,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:04,247 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:04,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:04,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:04,248 INFO L87 Difference]: Start difference. First operand 629 states and 1003 transitions. Second operand 4 states. [2019-10-13 21:11:04,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:04,343 INFO L93 Difference]: Finished difference Result 1221 states and 1964 transitions. [2019-10-13 21:11:04,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:04,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2019-10-13 21:11:04,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:04,350 INFO L225 Difference]: With dead ends: 1221 [2019-10-13 21:11:04,350 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:11:04,354 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:04,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:11:04,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 21:11:04,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:11:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1002 transitions. [2019-10-13 21:11:04,385 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1002 transitions. Word has length 127 [2019-10-13 21:11:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:04,386 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1002 transitions. [2019-10-13 21:11:04,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1002 transitions. [2019-10-13 21:11:04,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-13 21:11:04,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:04,393 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] [2019-10-13 21:11:04,393 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:04,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1101854388, now seen corresponding path program 1 times [2019-10-13 21:11:04,394 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:04,394 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082535073] [2019-10-13 21:11:04,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:04,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082535073] [2019-10-13 21:11:04,629 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:04,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:04,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25524050] [2019-10-13 21:11:04,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:04,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:04,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:04,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:04,631 INFO L87 Difference]: Start difference. First operand 629 states and 1002 transitions. Second operand 4 states. [2019-10-13 21:11:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:04,691 INFO L93 Difference]: Finished difference Result 1221 states and 1963 transitions. [2019-10-13 21:11:04,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:04,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2019-10-13 21:11:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:04,697 INFO L225 Difference]: With dead ends: 1221 [2019-10-13 21:11:04,697 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:11:04,700 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:04,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:11:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 21:11:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:11:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1001 transitions. [2019-10-13 21:11:04,730 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1001 transitions. Word has length 128 [2019-10-13 21:11:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:04,730 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1001 transitions. [2019-10-13 21:11:04,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1001 transitions. [2019-10-13 21:11:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 21:11:04,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:04,736 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] [2019-10-13 21:11:04,736 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash -862468589, now seen corresponding path program 1 times [2019-10-13 21:11:04,737 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:04,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991386086] [2019-10-13 21:11:04,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:04,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991386086] [2019-10-13 21:11:04,880 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:04,880 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:04,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928200255] [2019-10-13 21:11:04,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:04,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:04,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:04,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:04,882 INFO L87 Difference]: Start difference. First operand 629 states and 1001 transitions. Second operand 4 states. [2019-10-13 21:11:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:04,945 INFO L93 Difference]: Finished difference Result 1221 states and 1962 transitions. [2019-10-13 21:11:04,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:04,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2019-10-13 21:11:04,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:04,950 INFO L225 Difference]: With dead ends: 1221 [2019-10-13 21:11:04,950 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:11:04,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:04,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:11:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 21:11:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:11:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 1000 transitions. [2019-10-13 21:11:04,979 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 1000 transitions. Word has length 129 [2019-10-13 21:11:04,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:04,979 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 1000 transitions. [2019-10-13 21:11:04,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 1000 transitions. [2019-10-13 21:11:04,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-13 21:11:04,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:04,985 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] [2019-10-13 21:11:04,985 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:04,985 INFO L82 PathProgramCache]: Analyzing trace with hash 671327024, now seen corresponding path program 1 times [2019-10-13 21:11:04,986 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:04,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976469258] [2019-10-13 21:11:04,986 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,986 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:04,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:05,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976469258] [2019-10-13 21:11:05,207 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:05,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:05,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702951152] [2019-10-13 21:11:05,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:05,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:05,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:05,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:05,209 INFO L87 Difference]: Start difference. First operand 629 states and 1000 transitions. Second operand 4 states. [2019-10-13 21:11:05,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:05,278 INFO L93 Difference]: Finished difference Result 1221 states and 1961 transitions. [2019-10-13 21:11:05,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:05,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-10-13 21:11:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:05,288 INFO L225 Difference]: With dead ends: 1221 [2019-10-13 21:11:05,289 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:11:05,292 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:11:05,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2019-10-13 21:11:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-13 21:11:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 999 transitions. [2019-10-13 21:11:05,319 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 999 transitions. Word has length 130 [2019-10-13 21:11:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:05,321 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 999 transitions. [2019-10-13 21:11:05,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 999 transitions. [2019-10-13 21:11:05,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 21:11:05,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:05,328 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] [2019-10-13 21:11:05,331 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:05,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:05,332 INFO L82 PathProgramCache]: Analyzing trace with hash -617846089, now seen corresponding path program 1 times [2019-10-13 21:11:05,332 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:05,333 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336816061] [2019-10-13 21:11:05,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:05,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336816061] [2019-10-13 21:11:05,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:05,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:11:05,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091180305] [2019-10-13 21:11:05,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:11:05,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:05,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:11:05,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:11:05,533 INFO L87 Difference]: Start difference. First operand 629 states and 999 transitions. Second operand 10 states. [2019-10-13 21:11:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:05,683 INFO L93 Difference]: Finished difference Result 1179 states and 1881 transitions. [2019-10-13 21:11:05,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:11:05,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 131 [2019-10-13 21:11:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:05,692 INFO L225 Difference]: With dead ends: 1179 [2019-10-13 21:11:05,692 INFO L226 Difference]: Without dead ends: 638 [2019-10-13 21:11:05,699 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:11:05,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2019-10-13 21:11:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2019-10-13 21:11:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-13 21:11:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1008 transitions. [2019-10-13 21:11:05,733 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1008 transitions. Word has length 131 [2019-10-13 21:11:05,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:05,735 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 1008 transitions. [2019-10-13 21:11:05,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:11:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1008 transitions. [2019-10-13 21:11:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 21:11:05,742 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:05,742 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] [2019-10-13 21:11:05,742 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:05,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:05,742 INFO L82 PathProgramCache]: Analyzing trace with hash 57846520, now seen corresponding path program 1 times [2019-10-13 21:11:05,743 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:05,743 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450982095] [2019-10-13 21:11:05,743 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,743 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:05,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:05,863 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450982095] [2019-10-13 21:11:05,863 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:05,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:11:05,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954330167] [2019-10-13 21:11:05,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:11:05,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:05,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:11:05,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:11:05,865 INFO L87 Difference]: Start difference. First operand 636 states and 1008 transitions. Second operand 4 states. [2019-10-13 21:11:05,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:05,970 INFO L93 Difference]: Finished difference Result 1227 states and 1967 transitions. [2019-10-13 21:11:05,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:11:05,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2019-10-13 21:11:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:05,977 INFO L225 Difference]: With dead ends: 1227 [2019-10-13 21:11:05,977 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:11:05,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:11:05,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-13 21:11:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 21:11:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 985 transitions. [2019-10-13 21:11:06,003 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 985 transitions. Word has length 131 [2019-10-13 21:11:06,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:06,004 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 985 transitions. [2019-10-13 21:11:06,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:11:06,004 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 985 transitions. [2019-10-13 21:11:06,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 21:11:06,008 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:06,009 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] [2019-10-13 21:11:06,009 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:06,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:06,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1033600176, now seen corresponding path program 1 times [2019-10-13 21:11:06,010 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:06,010 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134738845] [2019-10-13 21:11:06,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:06,157 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134738845] [2019-10-13 21:11:06,157 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:06,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:06,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716814321] [2019-10-13 21:11:06,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:06,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:06,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:06,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:06,160 INFO L87 Difference]: Start difference. First operand 623 states and 985 transitions. Second operand 6 states. [2019-10-13 21:11:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:06,390 INFO L93 Difference]: Finished difference Result 1167 states and 1859 transitions. [2019-10-13 21:11:06,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:06,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-10-13 21:11:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:06,396 INFO L225 Difference]: With dead ends: 1167 [2019-10-13 21:11:06,397 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:11:06,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:11:06,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-13 21:11:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 21:11:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 981 transitions. [2019-10-13 21:11:06,429 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 981 transitions. Word has length 132 [2019-10-13 21:11:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:06,430 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 981 transitions. [2019-10-13 21:11:06,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 981 transitions. [2019-10-13 21:11:06,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-13 21:11:06,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:06,435 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] [2019-10-13 21:11:06,435 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:06,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1073337876, now seen corresponding path program 1 times [2019-10-13 21:11:06,442 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:06,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437241295] [2019-10-13 21:11:06,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,443 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:06,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437241295] [2019-10-13 21:11:06,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:06,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:06,613 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135063185] [2019-10-13 21:11:06,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:06,614 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:06,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:06,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:06,615 INFO L87 Difference]: Start difference. First operand 623 states and 981 transitions. Second operand 6 states. [2019-10-13 21:11:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:06,822 INFO L93 Difference]: Finished difference Result 1167 states and 1855 transitions. [2019-10-13 21:11:06,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:06,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-13 21:11:06,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:06,827 INFO L225 Difference]: With dead ends: 1167 [2019-10-13 21:11:06,827 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:11:06,831 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:11:06,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-13 21:11:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 21:11:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 977 transitions. [2019-10-13 21:11:06,859 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 977 transitions. Word has length 133 [2019-10-13 21:11:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:06,860 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 977 transitions. [2019-10-13 21:11:06,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:06,860 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 977 transitions. [2019-10-13 21:11:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 21:11:06,865 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:06,865 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] [2019-10-13 21:11:06,865 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:06,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1624657451, now seen corresponding path program 1 times [2019-10-13 21:11:06,866 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:06,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318890645] [2019-10-13 21:11:06,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:06,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:07,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318890645] [2019-10-13 21:11:07,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:07,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:07,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327843662] [2019-10-13 21:11:07,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:07,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:07,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:07,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:07,094 INFO L87 Difference]: Start difference. First operand 623 states and 977 transitions. Second operand 6 states. [2019-10-13 21:11:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:07,292 INFO L93 Difference]: Finished difference Result 1167 states and 1851 transitions. [2019-10-13 21:11:07,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:07,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2019-10-13 21:11:07,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:07,298 INFO L225 Difference]: With dead ends: 1167 [2019-10-13 21:11:07,299 INFO L226 Difference]: Without dead ends: 623 [2019-10-13 21:11:07,306 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:07,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-13 21:11:07,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2019-10-13 21:11:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-10-13 21:11:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 973 transitions. [2019-10-13 21:11:07,330 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 973 transitions. Word has length 134 [2019-10-13 21:11:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:07,330 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 973 transitions. [2019-10-13 21:11:07,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 973 transitions. [2019-10-13 21:11:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 21:11:07,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:07,335 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] [2019-10-13 21:11:07,335 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:07,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:07,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1879686741, now seen corresponding path program 1 times [2019-10-13 21:11:07,336 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:07,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397504120] [2019-10-13 21:11:07,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,337 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:07,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397504120] [2019-10-13 21:11:07,490 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:07,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:11:07,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082117273] [2019-10-13 21:11:07,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:11:07,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:07,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:11:07,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:11:07,493 INFO L87 Difference]: Start difference. First operand 623 states and 973 transitions. Second operand 7 states. [2019-10-13 21:11:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:07,608 INFO L93 Difference]: Finished difference Result 1167 states and 1847 transitions. [2019-10-13 21:11:07,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:11:07,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2019-10-13 21:11:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:07,616 INFO L225 Difference]: With dead ends: 1167 [2019-10-13 21:11:07,616 INFO L226 Difference]: Without dead ends: 602 [2019-10-13 21:11:07,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-13 21:11:07,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-13 21:11:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-13 21:11:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 939 transitions. [2019-10-13 21:11:07,654 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 939 transitions. Word has length 134 [2019-10-13 21:11:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:07,654 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 939 transitions. [2019-10-13 21:11:07,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:11:07,655 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 939 transitions. [2019-10-13 21:11:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 21:11:07,662 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:07,662 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] [2019-10-13 21:11:07,663 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:07,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1196444495, now seen corresponding path program 1 times [2019-10-13 21:11:07,663 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:07,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928279174] [2019-10-13 21:11:07,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:07,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928279174] [2019-10-13 21:11:07,804 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:07,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:07,805 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927481936] [2019-10-13 21:11:07,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:07,805 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:07,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:07,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:07,806 INFO L87 Difference]: Start difference. First operand 602 states and 939 transitions. Second operand 6 states. [2019-10-13 21:11:07,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:07,918 INFO L93 Difference]: Finished difference Result 1146 states and 1813 transitions. [2019-10-13 21:11:07,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:07,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2019-10-13 21:11:07,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:07,924 INFO L225 Difference]: With dead ends: 1146 [2019-10-13 21:11:07,924 INFO L226 Difference]: Without dead ends: 602 [2019-10-13 21:11:07,927 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-13 21:11:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-13 21:11:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-13 21:11:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 938 transitions. [2019-10-13 21:11:07,946 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 938 transitions. Word has length 135 [2019-10-13 21:11:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:07,946 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 938 transitions. [2019-10-13 21:11:07,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 938 transitions. [2019-10-13 21:11:07,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 21:11:07,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:07,951 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] [2019-10-13 21:11:07,951 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:07,952 INFO L82 PathProgramCache]: Analyzing trace with hash 467494150, now seen corresponding path program 1 times [2019-10-13 21:11:07,952 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:07,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207886443] [2019-10-13 21:11:07,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:07,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:08,078 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207886443] [2019-10-13 21:11:08,078 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:08,079 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:08,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211444456] [2019-10-13 21:11:08,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:08,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:08,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:08,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:08,080 INFO L87 Difference]: Start difference. First operand 602 states and 938 transitions. Second operand 6 states. [2019-10-13 21:11:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:08,178 INFO L93 Difference]: Finished difference Result 1146 states and 1812 transitions. [2019-10-13 21:11:08,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:08,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-10-13 21:11:08,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:08,183 INFO L225 Difference]: With dead ends: 1146 [2019-10-13 21:11:08,184 INFO L226 Difference]: Without dead ends: 602 [2019-10-13 21:11:08,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:11:08,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-13 21:11:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-13 21:11:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-13 21:11:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 937 transitions. [2019-10-13 21:11:08,206 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 937 transitions. Word has length 136 [2019-10-13 21:11:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:08,206 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 937 transitions. [2019-10-13 21:11:08,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 937 transitions. [2019-10-13 21:11:08,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 21:11:08,211 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:08,211 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] [2019-10-13 21:11:08,211 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:08,212 INFO L82 PathProgramCache]: Analyzing trace with hash -994380662, now seen corresponding path program 1 times [2019-10-13 21:11:08,212 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:08,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049761681] [2019-10-13 21:11:08,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:08,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049761681] [2019-10-13 21:11:08,401 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:08,401 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:11:08,401 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257896301] [2019-10-13 21:11:08,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:11:08,402 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:08,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:11:08,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:11:08,403 INFO L87 Difference]: Start difference. First operand 602 states and 937 transitions. Second operand 12 states. [2019-10-13 21:11:08,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:08,580 INFO L93 Difference]: Finished difference Result 1147 states and 1811 transitions. [2019-10-13 21:11:08,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:11:08,581 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2019-10-13 21:11:08,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:08,585 INFO L225 Difference]: With dead ends: 1147 [2019-10-13 21:11:08,585 INFO L226 Difference]: Without dead ends: 602 [2019-10-13 21:11:08,588 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 [2019-10-13 21:11:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-13 21:11:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-10-13 21:11:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-10-13 21:11:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 936 transitions. [2019-10-13 21:11:08,607 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 936 transitions. Word has length 137 [2019-10-13 21:11:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:08,608 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 936 transitions. [2019-10-13 21:11:08,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:11:08,608 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 936 transitions. [2019-10-13 21:11:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 21:11:08,612 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:08,613 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] [2019-10-13 21:11:08,613 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:08,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:08,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1158171471, now seen corresponding path program 1 times [2019-10-13 21:11:08,614 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:08,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077413286] [2019-10-13 21:11:08,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:08,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:08,749 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077413286] [2019-10-13 21:11:08,749 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:08,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:11:08,750 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696449102] [2019-10-13 21:11:08,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:11:08,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:08,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:11:08,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:11:08,751 INFO L87 Difference]: Start difference. First operand 602 states and 936 transitions. Second operand 5 states. [2019-10-13 21:11:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:11,402 INFO L93 Difference]: Finished difference Result 1510 states and 2385 transitions. [2019-10-13 21:11:11,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:11:11,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-10-13 21:11:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:11,412 INFO L225 Difference]: With dead ends: 1510 [2019-10-13 21:11:11,413 INFO L226 Difference]: Without dead ends: 974 [2019-10-13 21:11:11,418 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 [2019-10-13 21:11:11,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2019-10-13 21:11:11,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 944. [2019-10-13 21:11:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 944 states. [2019-10-13 21:11:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1477 transitions. [2019-10-13 21:11:11,467 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1477 transitions. Word has length 138 [2019-10-13 21:11:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:11,468 INFO L462 AbstractCegarLoop]: Abstraction has 944 states and 1477 transitions. [2019-10-13 21:11:11,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:11:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1477 transitions. [2019-10-13 21:11:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 21:11:11,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:11,473 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, 1, 1, 1] [2019-10-13 21:11:11,473 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:11,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:11,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1117496721, now seen corresponding path program 1 times [2019-10-13 21:11:11,474 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:11,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533929583] [2019-10-13 21:11:11,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:11,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:11,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:11,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:11,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533929583] [2019-10-13 21:11:11,667 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:11,667 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:11,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949682432] [2019-10-13 21:11:11,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:11,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:11,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:11,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:11,669 INFO L87 Difference]: Start difference. First operand 944 states and 1477 transitions. Second operand 6 states. [2019-10-13 21:11:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:16,035 INFO L93 Difference]: Finished difference Result 2860 states and 4638 transitions. [2019-10-13 21:11:16,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:11:16,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2019-10-13 21:11:16,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:16,056 INFO L225 Difference]: With dead ends: 2860 [2019-10-13 21:11:16,057 INFO L226 Difference]: Without dead ends: 1983 [2019-10-13 21:11:16,064 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 [2019-10-13 21:11:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2019-10-13 21:11:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1882. [2019-10-13 21:11:16,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2019-10-13 21:11:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2995 transitions. [2019-10-13 21:11:16,238 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2995 transitions. Word has length 138 [2019-10-13 21:11:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:16,239 INFO L462 AbstractCegarLoop]: Abstraction has 1882 states and 2995 transitions. [2019-10-13 21:11:16,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2995 transitions. [2019-10-13 21:11:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 21:11:16,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:16,244 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] [2019-10-13 21:11:16,244 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:16,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:16,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1503869869, now seen corresponding path program 1 times [2019-10-13 21:11:16,245 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:16,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635941908] [2019-10-13 21:11:16,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:16,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:16,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:16,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635941908] [2019-10-13 21:11:16,395 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:16,395 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:16,396 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863837488] [2019-10-13 21:11:16,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:16,396 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:16,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:16,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:16,397 INFO L87 Difference]: Start difference. First operand 1882 states and 2995 transitions. Second operand 6 states. [2019-10-13 21:11:20,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:20,641 INFO L93 Difference]: Finished difference Result 5959 states and 9792 transitions. [2019-10-13 21:11:20,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:11:20,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2019-10-13 21:11:20,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:20,673 INFO L225 Difference]: With dead ends: 5959 [2019-10-13 21:11:20,673 INFO L226 Difference]: Without dead ends: 4145 [2019-10-13 21:11:20,685 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 [2019-10-13 21:11:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2019-10-13 21:11:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 3900. [2019-10-13 21:11:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3900 states. [2019-10-13 21:11:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 6303 transitions. [2019-10-13 21:11:20,943 INFO L78 Accepts]: Start accepts. Automaton has 3900 states and 6303 transitions. Word has length 139 [2019-10-13 21:11:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:20,944 INFO L462 AbstractCegarLoop]: Abstraction has 3900 states and 6303 transitions. [2019-10-13 21:11:20,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3900 states and 6303 transitions. [2019-10-13 21:11:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 21:11:20,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:20,949 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] [2019-10-13 21:11:20,949 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:20,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:20,950 INFO L82 PathProgramCache]: Analyzing trace with hash 834330645, now seen corresponding path program 1 times [2019-10-13 21:11:20,950 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:20,950 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029127343] [2019-10-13 21:11:20,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:20,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:20,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:21,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029127343] [2019-10-13 21:11:21,120 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:21,120 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:21,120 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879918720] [2019-10-13 21:11:21,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:21,121 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:21,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:21,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:21,121 INFO L87 Difference]: Start difference. First operand 3900 states and 6303 transitions. Second operand 6 states. [2019-10-13 21:11:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:11:25,105 INFO L93 Difference]: Finished difference Result 12867 states and 21560 transitions. [2019-10-13 21:11:25,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:11:25,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-13 21:11:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:11:25,198 INFO L225 Difference]: With dead ends: 12867 [2019-10-13 21:11:25,198 INFO L226 Difference]: Without dead ends: 9037 [2019-10-13 21:11:25,227 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 [2019-10-13 21:11:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9037 states. [2019-10-13 21:11:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9037 to 8370. [2019-10-13 21:11:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8370 states. [2019-10-13 21:11:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8370 states to 8370 states and 13811 transitions. [2019-10-13 21:11:26,291 INFO L78 Accepts]: Start accepts. Automaton has 8370 states and 13811 transitions. Word has length 140 [2019-10-13 21:11:26,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:11:26,291 INFO L462 AbstractCegarLoop]: Abstraction has 8370 states and 13811 transitions. [2019-10-13 21:11:26,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:11:26,292 INFO L276 IsEmpty]: Start isEmpty. Operand 8370 states and 13811 transitions. [2019-10-13 21:11:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-13 21:11:26,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:11:26,297 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] [2019-10-13 21:11:26,298 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:11:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:11:26,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1791246257, now seen corresponding path program 1 times [2019-10-13 21:11:26,299 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:11:26,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597184922] [2019-10-13 21:11:26,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:26,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:11:26,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:11:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:11:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:11:26,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597184922] [2019-10-13 21:11:26,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:11:26,437 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:11:26,437 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324691735] [2019-10-13 21:11:26,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:11:26,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:11:26,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:11:26,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:11:26,440 INFO L87 Difference]: Start difference. First operand 8370 states and 13811 transitions. Second operand 6 states.