java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 14:43:16,824 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 14:43:16,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 14:43:16,843 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 14:43:16,843 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 14:43:16,844 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 14:43:16,848 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 14:43:16,850 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 14:43:16,853 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 14:43:16,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 14:43:16,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 14:43:16,861 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 14:43:16,861 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 14:43:16,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 14:43:16,870 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 14:43:16,871 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 14:43:16,872 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 14:43:16,874 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 14:43:16,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 14:43:16,881 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 14:43:16,882 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 14:43:16,885 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 14:43:16,889 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 14:43:16,889 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 14:43:16,890 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 14:43:16,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 14:43:16,893 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 14:43:16,894 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 14:43:16,895 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 14:43:16,896 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 14:43:16,896 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 14:43:16,897 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 14:43:16,898 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 14:43:16,898 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 14:43:16,899 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 14:43:16,901 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 14:43:16,901 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 14:43:16,925 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 14:43:16,925 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 14:43:16,926 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 14:43:16,926 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 14:43:16,926 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 14:43:16,927 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 14:43:16,927 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 14:43:16,927 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 14:43:16,927 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 14:43:16,927 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 14:43:16,928 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 14:43:16,928 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 14:43:16,928 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 14:43:16,928 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 14:43:16,929 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 14:43:16,929 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 14:43:16,929 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 14:43:16,929 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 14:43:16,929 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 14:43:16,930 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 14:43:16,930 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 14:43:16,930 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 14:43:16,930 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 14:43:16,930 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 14:43:16,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:43:16,931 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 14:43:16,931 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 14:43:16,931 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 14:43:16,931 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 14:43:16,932 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 14:43:16,932 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 14:43:16,932 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 14:43:16,932 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 14:43:16,932 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 14:43:16,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 14:43:16,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 14:43:16,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 14:43:16,998 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 14:43:16,998 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 14:43:16,999 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-09-15 14:43:17,365 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22bc91e4f/9664e06f9f5e42979df794c9e907a5b0/FLAG686b205ec [2018-09-15 14:43:17,872 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 14:43:17,873 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13_true-unreach-call.c [2018-09-15 14:43:17,915 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22bc91e4f/9664e06f9f5e42979df794c9e907a5b0/FLAG686b205ec [2018-09-15 14:43:17,940 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22bc91e4f/9664e06f9f5e42979df794c9e907a5b0 [2018-09-15 14:43:17,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 14:43:17,962 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 14:43:17,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 14:43:17,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 14:43:17,971 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 14:43:17,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:43:17" (1/1) ... [2018-09-15 14:43:17,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed21f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:17, skipping insertion in model container [2018-09-15 14:43:17,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:43:17" (1/1) ... [2018-09-15 14:43:17,990 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 14:43:19,526 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:43:19,544 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 14:43:20,168 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:43:20,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20 WrapperNode [2018-09-15 14:43:20,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 14:43:20,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 14:43:20,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 14:43:20,577 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 14:43:20,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... [2018-09-15 14:43:20,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... [2018-09-15 14:43:20,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 14:43:20,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 14:43:20,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 14:43:20,891 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 14:43:21,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... [2018-09-15 14:43:21,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... [2018-09-15 14:43:21,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... [2018-09-15 14:43:21,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... [2018-09-15 14:43:21,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... [2018-09-15 14:43:22,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... [2018-09-15 14:43:22,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... [2018-09-15 14:43:22,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 14:43:22,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 14:43:22,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 14:43:22,151 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 14:43:22,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:43:22,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 14:43:22,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 14:43:22,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-15 14:43:22,230 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-15 14:43:22,230 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-15 14:43:22,230 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-15 14:43:22,230 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 14:43:22,230 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 14:43:22,230 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 14:43:22,231 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 14:43:22,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 14:43:22,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 14:43:22,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 14:43:22,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 14:43:32,014 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 14:43:32,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:43:32 BoogieIcfgContainer [2018-09-15 14:43:32,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 14:43:32,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 14:43:32,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 14:43:32,020 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 14:43:32,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 02:43:17" (1/3) ... [2018-09-15 14:43:32,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f5543f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:43:32, skipping insertion in model container [2018-09-15 14:43:32,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:43:20" (2/3) ... [2018-09-15 14:43:32,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f5543f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:43:32, skipping insertion in model container [2018-09-15 14:43:32,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:43:32" (3/3) ... [2018-09-15 14:43:32,023 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13_true-unreach-call.c [2018-09-15 14:43:32,033 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 14:43:32,043 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 14:43:32,107 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 14:43:32,108 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 14:43:32,108 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 14:43:32,108 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 14:43:32,108 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 14:43:32,108 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 14:43:32,108 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 14:43:32,108 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 14:43:32,109 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 14:43:32,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-15 14:43:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-15 14:43:32,163 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:43:32,164 INFO L376 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] [2018-09-15 14:43:32,165 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:43:32,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1465464788, now seen corresponding path program 1 times [2018-09-15 14:43:32,174 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:43:32,175 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 65 with the following transitions: [2018-09-15 14:43:32,179 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [4242], [4246], [4252], [4256], [4269], [4270], [4271], [4273] [2018-09-15 14:43:32,233 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:43:32,233 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:43:40,497 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:43:40,499 INFO L272 AbstractInterpreter]: Visited 63 different actions 63 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-15 14:43:40,513 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:43:47,068 INFO L232 lantSequenceWeakener]: Weakened 61 states. On average, predicates are now at 73.25% of their original sizes. [2018-09-15 14:43:47,068 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:43:47,217 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:43:47,218 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:43:47,219 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 14:43:47,219 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:43:47,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 14:43:47,232 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 14:43:47,233 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:43:47,235 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 6 states. [2018-09-15 14:44:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:44:00,079 INFO L93 Difference]: Finished difference Result 3044 states and 5648 transitions. [2018-09-15 14:44:00,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 14:44:00,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2018-09-15 14:44:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:44:00,118 INFO L225 Difference]: With dead ends: 3044 [2018-09-15 14:44:00,118 INFO L226 Difference]: Without dead ends: 1922 [2018-09-15 14:44:00,129 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:44:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-09-15 14:44:00,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1920. [2018-09-15 14:44:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2018-09-15 14:44:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2831 transitions. [2018-09-15 14:44:00,279 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2831 transitions. Word has length 64 [2018-09-15 14:44:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:44:00,281 INFO L480 AbstractCegarLoop]: Abstraction has 1920 states and 2831 transitions. [2018-09-15 14:44:00,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 14:44:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2831 transitions. [2018-09-15 14:44:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-15 14:44:00,293 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:44:00,293 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-15 14:44:00,294 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:44:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2091389760, now seen corresponding path program 1 times [2018-09-15 14:44:00,294 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:44:00,295 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 166 with the following transitions: [2018-09-15 14:44:00,295 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3039], [3041], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-15 14:44:00,302 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:44:00,302 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown