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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:09:28,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:09:28,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:09:28,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:09:28,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:09:28,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:09:28,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:09:28,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:09:28,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:09:28,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:09:28,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:09:28,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:09:28,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:09:28,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:09:28,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:09:28,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:09:28,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:09:28,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:09:28,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:09:28,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:09:28,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:09:28,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:09:28,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:09:28,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:09:28,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:09:28,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:09:28,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:09:28,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:09:28,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:09:28,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:09:28,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:09:28,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:09:28,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:09:28,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:09:28,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:09:28,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:09:28,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:09:28,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:09:28,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:09:29,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:09:29,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:09:29,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:09:29,016 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:09:29,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:09:29,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:09:29,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:09:29,018 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:09:29,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:09:29,019 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:09:29,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:09:29,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:09:29,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:09:29,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:09:29,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:09:29,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:09:29,020 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:09:29,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:09:29,020 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:09:29,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:09:29,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:09:29,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:09:29,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:09:29,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:09:29,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:09:29,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:09:29,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:09:29,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:09:29,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:09:29,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:09:29,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:09:29,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:09:29,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:09:29,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:09:29,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:09:29,317 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:09:29,318 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:09:29,319 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product20.cil.c [2019-10-15 01:09:29,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d640505ec/99e0452c6b6c44a4a9d0555914da0d55/FLAGc08cf5ade [2019-10-15 01:09:30,059 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:09:30,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product20.cil.c [2019-10-15 01:09:30,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d640505ec/99e0452c6b6c44a4a9d0555914da0d55/FLAGc08cf5ade [2019-10-15 01:09:30,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d640505ec/99e0452c6b6c44a4a9d0555914da0d55 [2019-10-15 01:09:30,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:09:30,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:09:30,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:09:30,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:09:30,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:09:30,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:09:30" (1/1) ... [2019-10-15 01:09:30,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4326aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:30, skipping insertion in model container [2019-10-15 01:09:30,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:09:30" (1/1) ... [2019-10-15 01:09:30,322 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:09:30,443 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:09:31,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:09:31,270 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:09:31,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:09:31,555 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:09:31,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31 WrapperNode [2019-10-15 01:09:31,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:09:31,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:09:31,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:09:31,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:09:31,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31" (1/1) ... [2019-10-15 01:09:31,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31" (1/1) ... [2019-10-15 01:09:31,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31" (1/1) ... [2019-10-15 01:09:31,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31" (1/1) ... [2019-10-15 01:09:31,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31" (1/1) ... [2019-10-15 01:09:31,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31" (1/1) ... [2019-10-15 01:09:31,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31" (1/1) ... [2019-10-15 01:09:31,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:09:31,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:09:31,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:09:31,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:09:31,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:09:31,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:09:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:09:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:09:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:09:31,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:09:31,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:09:31,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:09:31,857 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:09:31,857 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:09:31,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:09:31,858 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:09:31,858 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:09:31,859 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:09:31,859 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:09:31,860 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:09:31,860 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:09:31,862 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:09:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:09:31,863 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:09:31,864 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:09:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:09:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:09:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:09:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:09:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:09:31,865 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:09:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:09:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:09:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:09:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:09:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:09:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-15 01:09:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:09:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-15 01:09:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:09:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:09:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:09:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:09:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:09:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:09:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:09:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:09:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:09:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:09:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:09:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:09:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:09:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:09:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:09:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:09:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:09:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:09:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:09:31,871 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:09:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:09:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:09:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:09:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:09:31,872 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:09:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:09:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:09:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:09:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:09:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:09:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:09:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:09:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:09:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:09:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:09:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:09:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:09:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:09:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:09:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:09:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:09:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:09:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:09:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:09:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:09:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:09:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:09:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:09:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:09:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:09:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:09:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 01:09:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 01:09:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-15 01:09:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-15 01:09:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:09:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:09:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:09:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:09:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:09:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:09:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:09:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:09:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:09:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:09:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:09:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:09:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:09:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:09:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:09:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:09:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:09:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:09:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:09:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:09:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:09:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:09:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:09:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:09:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:09:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:09:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:09:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:09:31,887 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-15 01:09:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:09:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:09:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-15 01:09:31,888 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:09:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:09:31,889 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:09:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-15 01:09:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-15 01:09:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:09:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:09:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:09:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:09:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:09:31,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:09:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:09:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:09:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:09:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:09:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:09:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:09:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:09:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:09:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:09:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:09:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:09:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:09:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:09:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:09:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:09:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:09:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:09:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:09:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:09:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:09:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:09:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:09:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:09:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:09:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:09:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:09:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:09:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:09:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:09:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:09:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:09:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:09:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:09:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:09:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:09:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:09:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:09:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:09:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:09:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:09:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:09:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:09:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:09:34,261 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:09:34,262 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:09:34,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:09:34 BoogieIcfgContainer [2019-10-15 01:09:34,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:09:34,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:09:34,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:09:34,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:09:34,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:09:30" (1/3) ... [2019-10-15 01:09:34,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19323b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:09:34, skipping insertion in model container [2019-10-15 01:09:34,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:09:31" (2/3) ... [2019-10-15 01:09:34,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19323b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:09:34, skipping insertion in model container [2019-10-15 01:09:34,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:09:34" (3/3) ... [2019-10-15 01:09:34,273 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2019-10-15 01:09:34,284 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:09:34,295 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:09:34,308 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:09:34,355 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:09:34,355 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:09:34,356 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:09:34,356 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:09:34,356 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:09:34,356 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:09:34,356 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:09:34,356 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:09:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states. [2019-10-15 01:09:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-15 01:09:34,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:34,422 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:34,427 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:34,433 INFO L82 PathProgramCache]: Analyzing trace with hash 64151631, now seen corresponding path program 1 times [2019-10-15 01:09:34,443 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:34,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888779041] [2019-10-15 01:09:34,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:34,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:34,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:35,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888779041] [2019-10-15 01:09:35,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:35,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:09:35,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44153903] [2019-10-15 01:09:35,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:35,047 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:35,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:09:35,064 INFO L87 Difference]: Start difference. First operand 786 states. Second operand 4 states. [2019-10-15 01:09:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:35,251 INFO L93 Difference]: Finished difference Result 1221 states and 1969 transitions. [2019-10-15 01:09:35,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:35,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2019-10-15 01:09:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:35,284 INFO L225 Difference]: With dead ends: 1221 [2019-10-15 01:09:35,284 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:09:35,296 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:09:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:09:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:09:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:09:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 986 transitions. [2019-10-15 01:09:35,435 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 986 transitions. Word has length 85 [2019-10-15 01:09:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:35,436 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 986 transitions. [2019-10-15 01:09:35,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 986 transitions. [2019-10-15 01:09:35,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 01:09:35,458 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:35,460 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:35,460 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:35,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1001440901, now seen corresponding path program 1 times [2019-10-15 01:09:35,465 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:35,465 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865968042] [2019-10-15 01:09:35,465 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:35,465 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:35,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:35,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865968042] [2019-10-15 01:09:35,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:35,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:09:35,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554538363] [2019-10-15 01:09:35,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:35,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:35,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:35,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:09:35,697 INFO L87 Difference]: Start difference. First operand 619 states and 986 transitions. Second operand 4 states. [2019-10-15 01:09:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:35,814 INFO L93 Difference]: Finished difference Result 1201 states and 1930 transitions. [2019-10-15 01:09:35,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:35,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2019-10-15 01:09:35,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:35,821 INFO L225 Difference]: With dead ends: 1201 [2019-10-15 01:09:35,822 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:09:35,826 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:09:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:09:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:09:35,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:09:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 985 transitions. [2019-10-15 01:09:35,862 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 985 transitions. Word has length 88 [2019-10-15 01:09:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:35,863 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 985 transitions. [2019-10-15 01:09:35,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 985 transitions. [2019-10-15 01:09:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-15 01:09:35,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:35,871 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:35,871 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:35,871 INFO L82 PathProgramCache]: Analyzing trace with hash 271669182, now seen corresponding path program 1 times [2019-10-15 01:09:35,872 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:35,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699880152] [2019-10-15 01:09:35,872 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:35,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:35,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:36,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699880152] [2019-10-15 01:09:36,077 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:36,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:09:36,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868782076] [2019-10-15 01:09:36,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:36,080 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:36,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:36,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:09:36,080 INFO L87 Difference]: Start difference. First operand 619 states and 985 transitions. Second operand 4 states. [2019-10-15 01:09:36,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:36,156 INFO L93 Difference]: Finished difference Result 1201 states and 1929 transitions. [2019-10-15 01:09:36,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:36,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2019-10-15 01:09:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:36,168 INFO L225 Difference]: With dead ends: 1201 [2019-10-15 01:09:36,168 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:09:36,172 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:09:36,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:09:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:09:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:09:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 984 transitions. [2019-10-15 01:09:36,223 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 984 transitions. Word has length 89 [2019-10-15 01:09:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:36,224 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 984 transitions. [2019-10-15 01:09:36,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 984 transitions. [2019-10-15 01:09:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-15 01:09:36,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:36,226 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:36,226 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1164725591, now seen corresponding path program 1 times [2019-10-15 01:09:36,227 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:36,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072175526] [2019-10-15 01:09:36,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:36,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:36,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:36,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072175526] [2019-10-15 01:09:36,374 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:36,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:09:36,375 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901042692] [2019-10-15 01:09:36,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:36,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:36,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:36,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:09:36,377 INFO L87 Difference]: Start difference. First operand 619 states and 984 transitions. Second operand 4 states. [2019-10-15 01:09:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:36,437 INFO L93 Difference]: Finished difference Result 1201 states and 1928 transitions. [2019-10-15 01:09:36,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:36,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2019-10-15 01:09:36,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:36,445 INFO L225 Difference]: With dead ends: 1201 [2019-10-15 01:09:36,445 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:09:36,448 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:09:36,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:09:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:09:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:09:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 983 transitions. [2019-10-15 01:09:36,477 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 983 transitions. Word has length 90 [2019-10-15 01:09:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:36,479 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 983 transitions. [2019-10-15 01:09:36,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:36,479 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 983 transitions. [2019-10-15 01:09:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 01:09:36,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:36,482 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:36,482 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:36,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:36,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1133947302, now seen corresponding path program 1 times [2019-10-15 01:09:36,483 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:36,483 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133093366] [2019-10-15 01:09:36,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:36,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:36,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:36,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133093366] [2019-10-15 01:09:36,600 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:36,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:09:36,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660516814] [2019-10-15 01:09:36,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:36,601 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:36,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:36,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:09:36,602 INFO L87 Difference]: Start difference. First operand 619 states and 983 transitions. Second operand 4 states. [2019-10-15 01:09:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:36,666 INFO L93 Difference]: Finished difference Result 1201 states and 1927 transitions. [2019-10-15 01:09:36,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:36,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2019-10-15 01:09:36,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:36,673 INFO L225 Difference]: With dead ends: 1201 [2019-10-15 01:09:36,673 INFO L226 Difference]: Without dead ends: 619 [2019-10-15 01:09:36,676 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:09:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-15 01:09:36,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2019-10-15 01:09:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-10-15 01:09:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 982 transitions. [2019-10-15 01:09:36,703 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 982 transitions. Word has length 91 [2019-10-15 01:09:36,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:36,703 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 982 transitions. [2019-10-15 01:09:36,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:36,704 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 982 transitions. [2019-10-15 01:09:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:09:36,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:36,705 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:36,706 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:36,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:36,706 INFO L82 PathProgramCache]: Analyzing trace with hash 702986547, now seen corresponding path program 1 times [2019-10-15 01:09:36,706 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:36,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486194566] [2019-10-15 01:09:36,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:36,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:36,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:36,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486194566] [2019-10-15 01:09:36,939 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:36,939 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:09:36,939 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395095175] [2019-10-15 01:09:36,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:09:36,941 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:36,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:09:36,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:09:36,941 INFO L87 Difference]: Start difference. First operand 619 states and 982 transitions. Second operand 10 states. [2019-10-15 01:09:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:37,101 INFO L93 Difference]: Finished difference Result 1159 states and 1847 transitions. [2019-10-15 01:09:37,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:09:37,102 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2019-10-15 01:09:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:37,108 INFO L225 Difference]: With dead ends: 1159 [2019-10-15 01:09:37,109 INFO L226 Difference]: Without dead ends: 628 [2019-10-15 01:09:37,113 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:09:37,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-15 01:09:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 626. [2019-10-15 01:09:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:09:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 991 transitions. [2019-10-15 01:09:37,148 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 991 transitions. Word has length 92 [2019-10-15 01:09:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:37,148 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 991 transitions. [2019-10-15 01:09:37,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:09:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 991 transitions. [2019-10-15 01:09:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-15 01:09:37,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:37,153 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:37,153 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash 723323922, now seen corresponding path program 1 times [2019-10-15 01:09:37,154 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:37,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351556191] [2019-10-15 01:09:37,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:37,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:37,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:37,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351556191] [2019-10-15 01:09:37,260 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:37,261 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:09:37,261 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121197717] [2019-10-15 01:09:37,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:37,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:37,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:37,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:09:37,262 INFO L87 Difference]: Start difference. First operand 626 states and 991 transitions. Second operand 4 states. [2019-10-15 01:09:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:37,340 INFO L93 Difference]: Finished difference Result 1207 states and 1933 transitions. [2019-10-15 01:09:37,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:37,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2019-10-15 01:09:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:37,350 INFO L225 Difference]: With dead ends: 1207 [2019-10-15 01:09:37,351 INFO L226 Difference]: Without dead ends: 613 [2019-10-15 01:09:37,355 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:09:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2019-10-15 01:09:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2019-10-15 01:09:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-10-15 01:09:37,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 968 transitions. [2019-10-15 01:09:37,387 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 968 transitions. Word has length 92 [2019-10-15 01:09:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:37,388 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 968 transitions. [2019-10-15 01:09:37,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 968 transitions. [2019-10-15 01:09:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 01:09:37,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:37,393 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:37,393 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:37,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1512255588, now seen corresponding path program 1 times [2019-10-15 01:09:37,395 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:37,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370500426] [2019-10-15 01:09:37,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:37,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:37,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:37,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370500426] [2019-10-15 01:09:37,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:37,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:09:37,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427440444] [2019-10-15 01:09:37,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:09:37,540 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:37,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:09:37,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:09:37,540 INFO L87 Difference]: Start difference. First operand 613 states and 968 transitions. Second operand 6 states. [2019-10-15 01:09:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:37,808 INFO L93 Difference]: Finished difference Result 1147 states and 1825 transitions. [2019-10-15 01:09:37,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:09:37,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-10-15 01:09:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:37,814 INFO L225 Difference]: With dead ends: 1147 [2019-10-15 01:09:37,814 INFO L226 Difference]: Without dead ends: 613 [2019-10-15 01:09:37,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2019-10-15 01:09:37,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2019-10-15 01:09:37,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-10-15 01:09:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 964 transitions. [2019-10-15 01:09:37,853 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 964 transitions. Word has length 93 [2019-10-15 01:09:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:37,855 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 964 transitions. [2019-10-15 01:09:37,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:09:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 964 transitions. [2019-10-15 01:09:37,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 01:09:37,858 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:37,858 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:37,858 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:37,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:37,859 INFO L82 PathProgramCache]: Analyzing trace with hash 917220790, now seen corresponding path program 1 times [2019-10-15 01:09:37,859 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:37,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083704329] [2019-10-15 01:09:37,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:37,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:37,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:38,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083704329] [2019-10-15 01:09:38,017 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:38,017 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:09:38,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097942159] [2019-10-15 01:09:38,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:09:38,018 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:38,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:09:38,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:09:38,018 INFO L87 Difference]: Start difference. First operand 613 states and 964 transitions. Second operand 6 states. [2019-10-15 01:09:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:38,231 INFO L93 Difference]: Finished difference Result 1147 states and 1821 transitions. [2019-10-15 01:09:38,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:09:38,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2019-10-15 01:09:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:38,237 INFO L225 Difference]: With dead ends: 1147 [2019-10-15 01:09:38,237 INFO L226 Difference]: Without dead ends: 613 [2019-10-15 01:09:38,240 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:38,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2019-10-15 01:09:38,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2019-10-15 01:09:38,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-10-15 01:09:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 960 transitions. [2019-10-15 01:09:38,263 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 960 transitions. Word has length 94 [2019-10-15 01:09:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:38,263 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 960 transitions. [2019-10-15 01:09:38,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:09:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 960 transitions. [2019-10-15 01:09:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:09:38,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:38,265 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:38,265 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:38,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash -387785559, now seen corresponding path program 1 times [2019-10-15 01:09:38,266 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:38,266 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361677402] [2019-10-15 01:09:38,266 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:38,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:38,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:38,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361677402] [2019-10-15 01:09:38,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:38,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:09:38,381 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482885129] [2019-10-15 01:09:38,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:09:38,382 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:38,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:09:38,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:09:38,382 INFO L87 Difference]: Start difference. First operand 613 states and 960 transitions. Second operand 6 states. [2019-10-15 01:09:38,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:38,592 INFO L93 Difference]: Finished difference Result 1147 states and 1817 transitions. [2019-10-15 01:09:38,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:09:38,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-10-15 01:09:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:38,597 INFO L225 Difference]: With dead ends: 1147 [2019-10-15 01:09:38,597 INFO L226 Difference]: Without dead ends: 613 [2019-10-15 01:09:38,600 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:38,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2019-10-15 01:09:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2019-10-15 01:09:38,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-10-15 01:09:38,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 956 transitions. [2019-10-15 01:09:38,629 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 956 transitions. Word has length 95 [2019-10-15 01:09:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:38,629 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 956 transitions. [2019-10-15 01:09:38,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:09:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 956 transitions. [2019-10-15 01:09:38,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-15 01:09:38,631 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:38,632 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:38,632 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:38,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:38,633 INFO L82 PathProgramCache]: Analyzing trace with hash 660068649, now seen corresponding path program 1 times [2019-10-15 01:09:38,633 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:38,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789966429] [2019-10-15 01:09:38,633 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:38,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:38,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:38,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789966429] [2019-10-15 01:09:38,765 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:38,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:09:38,765 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768968479] [2019-10-15 01:09:38,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:09:38,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:38,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:09:38,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:09:38,767 INFO L87 Difference]: Start difference. First operand 613 states and 956 transitions. Second operand 7 states. [2019-10-15 01:09:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:38,906 INFO L93 Difference]: Finished difference Result 1147 states and 1813 transitions. [2019-10-15 01:09:38,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:09:38,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2019-10-15 01:09:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:38,914 INFO L225 Difference]: With dead ends: 1147 [2019-10-15 01:09:38,914 INFO L226 Difference]: Without dead ends: 592 [2019-10-15 01:09:38,918 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-15 01:09:38,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-15 01:09:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-15 01:09:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 922 transitions. [2019-10-15 01:09:38,951 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 922 transitions. Word has length 95 [2019-10-15 01:09:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:38,952 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 922 transitions. [2019-10-15 01:09:38,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:09:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 922 transitions. [2019-10-15 01:09:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 01:09:38,953 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:38,954 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:38,954 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:38,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:38,954 INFO L82 PathProgramCache]: Analyzing trace with hash 2067893787, now seen corresponding path program 1 times [2019-10-15 01:09:38,954 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:38,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145332157] [2019-10-15 01:09:38,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:38,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:38,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:39,115 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145332157] [2019-10-15 01:09:39,116 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:39,116 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:09:39,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211939698] [2019-10-15 01:09:39,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:09:39,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:39,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:09:39,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:09:39,117 INFO L87 Difference]: Start difference. First operand 592 states and 922 transitions. Second operand 6 states. [2019-10-15 01:09:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:39,221 INFO L93 Difference]: Finished difference Result 1126 states and 1779 transitions. [2019-10-15 01:09:39,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:09:39,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-10-15 01:09:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:39,227 INFO L225 Difference]: With dead ends: 1126 [2019-10-15 01:09:39,227 INFO L226 Difference]: Without dead ends: 592 [2019-10-15 01:09:39,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-15 01:09:39,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-15 01:09:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-15 01:09:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 921 transitions. [2019-10-15 01:09:39,257 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 921 transitions. Word has length 96 [2019-10-15 01:09:39,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:39,258 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 921 transitions. [2019-10-15 01:09:39,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:09:39,259 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 921 transitions. [2019-10-15 01:09:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 01:09:39,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:39,261 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:39,261 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:39,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:39,262 INFO L82 PathProgramCache]: Analyzing trace with hash 845745390, now seen corresponding path program 1 times [2019-10-15 01:09:39,262 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:39,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428790767] [2019-10-15 01:09:39,262 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:39,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:39,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:39,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428790767] [2019-10-15 01:09:39,384 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:39,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:09:39,385 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237129717] [2019-10-15 01:09:39,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:09:39,386 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:39,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:09:39,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:09:39,386 INFO L87 Difference]: Start difference. First operand 592 states and 921 transitions. Second operand 6 states. [2019-10-15 01:09:39,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:39,478 INFO L93 Difference]: Finished difference Result 1126 states and 1778 transitions. [2019-10-15 01:09:39,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:09:39,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-10-15 01:09:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:39,484 INFO L225 Difference]: With dead ends: 1126 [2019-10-15 01:09:39,484 INFO L226 Difference]: Without dead ends: 592 [2019-10-15 01:09:39,487 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-15 01:09:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-15 01:09:39,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-15 01:09:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 920 transitions. [2019-10-15 01:09:39,511 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 920 transitions. Word has length 97 [2019-10-15 01:09:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:39,513 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 920 transitions. [2019-10-15 01:09:39,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:09:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 920 transitions. [2019-10-15 01:09:39,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:09:39,515 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:39,515 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:39,515 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:39,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:39,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1559535234, now seen corresponding path program 1 times [2019-10-15 01:09:39,516 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:39,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455792141] [2019-10-15 01:09:39,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:39,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:39,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:39,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455792141] [2019-10-15 01:09:39,641 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:39,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:09:39,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597559363] [2019-10-15 01:09:39,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:09:39,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:39,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:09:39,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:09:39,642 INFO L87 Difference]: Start difference. First operand 592 states and 920 transitions. Second operand 4 states. [2019-10-15 01:09:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:39,691 INFO L93 Difference]: Finished difference Result 1126 states and 1777 transitions. [2019-10-15 01:09:39,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:09:39,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-10-15 01:09:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:39,697 INFO L225 Difference]: With dead ends: 1126 [2019-10-15 01:09:39,697 INFO L226 Difference]: Without dead ends: 592 [2019-10-15 01:09:39,701 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:09:39,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-15 01:09:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-15 01:09:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-15 01:09:39,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 919 transitions. [2019-10-15 01:09:39,725 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 919 transitions. Word has length 98 [2019-10-15 01:09:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:39,725 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 919 transitions. [2019-10-15 01:09:39,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:09:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 919 transitions. [2019-10-15 01:09:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-15 01:09:39,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:39,727 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:39,727 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:39,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1575053952, now seen corresponding path program 1 times [2019-10-15 01:09:39,728 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:39,728 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571413097] [2019-10-15 01:09:39,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:39,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:39,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:39,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571413097] [2019-10-15 01:09:39,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:39,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:09:39,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889445543] [2019-10-15 01:09:39,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:09:39,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:39,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:09:39,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:09:39,944 INFO L87 Difference]: Start difference. First operand 592 states and 919 transitions. Second operand 12 states. [2019-10-15 01:09:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:40,139 INFO L93 Difference]: Finished difference Result 1127 states and 1776 transitions. [2019-10-15 01:09:40,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:09:40,140 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-10-15 01:09:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:40,148 INFO L225 Difference]: With dead ends: 1127 [2019-10-15 01:09:40,148 INFO L226 Difference]: Without dead ends: 592 [2019-10-15 01:09:40,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:09:40,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-15 01:09:40,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-15 01:09:40,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-15 01:09:40,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 918 transitions. [2019-10-15 01:09:40,179 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 918 transitions. Word has length 98 [2019-10-15 01:09:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:40,179 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 918 transitions. [2019-10-15 01:09:40,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:09:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 918 transitions. [2019-10-15 01:09:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 01:09:40,182 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:40,182 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:40,183 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:40,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1898679017, now seen corresponding path program 1 times [2019-10-15 01:09:40,184 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:40,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58879868] [2019-10-15 01:09:40,184 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:40,185 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:40,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:09:40,391 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58879868] [2019-10-15 01:09:40,392 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:40,392 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:09:40,392 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097256118] [2019-10-15 01:09:40,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:09:40,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:40,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:09:40,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:09:40,393 INFO L87 Difference]: Start difference. First operand 592 states and 918 transitions. Second operand 6 states. [2019-10-15 01:09:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:44,229 INFO L93 Difference]: Finished difference Result 1754 states and 2806 transitions. [2019-10-15 01:09:44,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:09:44,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-10-15 01:09:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:44,244 INFO L225 Difference]: With dead ends: 1754 [2019-10-15 01:09:44,244 INFO L226 Difference]: Without dead ends: 1228 [2019-10-15 01:09:44,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:09:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2019-10-15 01:09:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1103. [2019-10-15 01:09:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2019-10-15 01:09:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1757 transitions. [2019-10-15 01:09:44,332 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1757 transitions. Word has length 99 [2019-10-15 01:09:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:44,333 INFO L462 AbstractCegarLoop]: Abstraction has 1103 states and 1757 transitions. [2019-10-15 01:09:44,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:09:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1757 transitions. [2019-10-15 01:09:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:09:44,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:44,342 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:44,343 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1662557516, now seen corresponding path program 1 times [2019-10-15 01:09:44,344 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:44,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403520138] [2019-10-15 01:09:44,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:44,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:44,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 01:09:44,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403520138] [2019-10-15 01:09:44,597 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:09:44,597 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:09:44,597 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058909474] [2019-10-15 01:09:44,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:09:44,598 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:44,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:09:44,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:09:44,599 INFO L87 Difference]: Start difference. First operand 1103 states and 1757 transitions. Second operand 12 states. [2019-10-15 01:09:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:54,808 INFO L93 Difference]: Finished difference Result 3586 states and 5731 transitions. [2019-10-15 01:09:54,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 01:09:54,809 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2019-10-15 01:09:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:54,825 INFO L225 Difference]: With dead ends: 3586 [2019-10-15 01:09:54,826 INFO L226 Difference]: Without dead ends: 2549 [2019-10-15 01:09:54,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:09:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2019-10-15 01:09:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2491. [2019-10-15 01:09:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2491 states. [2019-10-15 01:09:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2491 states to 2491 states and 3938 transitions. [2019-10-15 01:09:54,972 INFO L78 Accepts]: Start accepts. Automaton has 2491 states and 3938 transitions. Word has length 157 [2019-10-15 01:09:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:54,972 INFO L462 AbstractCegarLoop]: Abstraction has 2491 states and 3938 transitions. [2019-10-15 01:09:54,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:09:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2491 states and 3938 transitions. [2019-10-15 01:09:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:09:54,978 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:54,978 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:54,978 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:54,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1568685766, now seen corresponding path program 1 times [2019-10-15 01:09:54,979 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:54,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140688810] [2019-10-15 01:09:54,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:54,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:54,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:09:55,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140688810] [2019-10-15 01:09:55,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749366586] [2019-10-15 01:09:55,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:55,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:09:55,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:09:55,782 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:09:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:09:57,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:09:57,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-15 01:09:57,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220659866] [2019-10-15 01:09:57,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:09:57,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:09:57,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:09:57,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:09:57,050 INFO L87 Difference]: Start difference. First operand 2491 states and 3938 transitions. Second operand 5 states. [2019-10-15 01:09:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:09:58,169 INFO L93 Difference]: Finished difference Result 4980 states and 8084 transitions. [2019-10-15 01:09:58,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:09:58,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-10-15 01:09:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:09:58,206 INFO L225 Difference]: With dead ends: 4980 [2019-10-15 01:09:58,206 INFO L226 Difference]: Without dead ends: 2555 [2019-10-15 01:09:58,225 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 302 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:09:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2019-10-15 01:09:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2555. [2019-10-15 01:09:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2555 states. [2019-10-15 01:09:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2555 states to 2555 states and 4040 transitions. [2019-10-15 01:09:58,435 INFO L78 Accepts]: Start accepts. Automaton has 2555 states and 4040 transitions. Word has length 158 [2019-10-15 01:09:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:09:58,437 INFO L462 AbstractCegarLoop]: Abstraction has 2555 states and 4040 transitions. [2019-10-15 01:09:58,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:09:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2555 states and 4040 transitions. [2019-10-15 01:09:58,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 01:09:58,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:09:58,443 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:09:58,652 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:58,652 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:09:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:09:58,652 INFO L82 PathProgramCache]: Analyzing trace with hash -633101954, now seen corresponding path program 1 times [2019-10-15 01:09:58,653 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:09:58,653 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022555388] [2019-10-15 01:09:58,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:58,653 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:09:58,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:09:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:09:58,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022555388] [2019-10-15 01:09:58,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458231045] [2019-10-15 01:09:58,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:09:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:09:59,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 3055 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:09:59,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:09:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:09:59,457 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:10:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:00,397 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:10:00,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-15 01:10:00,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623832933] [2019-10-15 01:10:00,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:10:00,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:10:00,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:10:00,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:10:00,399 INFO L87 Difference]: Start difference. First operand 2555 states and 4040 transitions. Second operand 5 states. [2019-10-15 01:10:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:10:01,321 INFO L93 Difference]: Finished difference Result 5108 states and 8270 transitions. [2019-10-15 01:10:01,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:10:01,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2019-10-15 01:10:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:10:01,339 INFO L225 Difference]: With dead ends: 5108 [2019-10-15 01:10:01,339 INFO L226 Difference]: Without dead ends: 2619 [2019-10-15 01:10:01,352 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 306 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:10:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2019-10-15 01:10:01,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2019-10-15 01:10:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2619 states. [2019-10-15 01:10:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4142 transitions. [2019-10-15 01:10:01,467 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4142 transitions. Word has length 160 [2019-10-15 01:10:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:10:01,468 INFO L462 AbstractCegarLoop]: Abstraction has 2619 states and 4142 transitions. [2019-10-15 01:10:01,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:10:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4142 transitions. [2019-10-15 01:10:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:10:01,474 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:10:01,475 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:10:01,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:10:01,682 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:10:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:10:01,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1116163654, now seen corresponding path program 1 times [2019-10-15 01:10:01,682 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:10:01,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320406412] [2019-10-15 01:10:01,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,683 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:10:01,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:10:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:10:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:10:01,868 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320406412] [2019-10-15 01:10:01,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184238078] [2019-10-15 01:10:01,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true