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_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 12:52:27,870 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 12:52:27,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 12:52:27,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 12:52:27,888 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 12:52:27,889 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 12:52:27,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 12:52:27,894 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 12:52:27,897 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 12:52:27,898 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 12:52:27,899 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 12:52:27,900 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 12:52:27,901 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 12:52:27,902 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 12:52:27,903 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 12:52:27,903 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 12:52:27,904 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 12:52:27,906 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 12:52:27,908 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 12:52:27,909 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 12:52:27,910 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 12:52:27,912 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 12:52:27,914 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 12:52:27,914 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 12:52:27,915 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 12:52:27,916 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 12:52:27,917 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 12:52:27,917 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 12:52:27,918 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 12:52:27,919 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 12:52:27,920 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 12:52:27,920 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 12:52:27,921 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 12:52:27,921 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 12:52:27,922 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 12:52:27,922 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 12:52:27,923 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-19 12:52:27,938 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 12:52:27,938 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 12:52:27,939 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 12:52:27,939 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 12:52:27,939 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 12:52:27,940 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 12:52:27,940 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 12:52:27,940 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-19 12:52:27,940 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 12:52:27,940 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 12:52:27,940 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 12:52:27,941 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 12:52:27,941 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 12:52:27,942 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 12:52:27,942 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 12:52:27,942 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 12:52:27,942 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 12:52:27,942 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 12:52:27,943 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 12:52:27,943 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 12:52:27,943 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 12:52:27,943 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 12:52:27,943 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 12:52:27,943 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 12:52:27,944 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 12:52:27,944 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 12:52:27,944 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 12:52:27,944 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 12:52:27,944 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 12:52:27,945 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 12:52:27,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 12:52:27,945 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 12:52:27,945 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 12:52:27,945 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 12:52:27,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 12:52:28,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 12:52:28,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 12:52:28,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 12:52:28,013 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 12:52:28,014 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-09-19 12:52:28,376 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e97fc049/8c3bb5f61a2c4e28a00af300a9b08184/FLAG2e64b1739 [2018-09-19 12:52:28,905 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 12:52:28,906 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-09-19 12:52:28,949 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e97fc049/8c3bb5f61a2c4e28a00af300a9b08184/FLAG2e64b1739 [2018-09-19 12:52:28,965 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e97fc049/8c3bb5f61a2c4e28a00af300a9b08184 [2018-09-19 12:52:28,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 12:52:28,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 12:52:28,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 12:52:28,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 12:52:28,989 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 12:52:28,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 12:52:28" (1/1) ... [2018-09-19 12:52:28,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612a6518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:28, skipping insertion in model container [2018-09-19 12:52:28,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 12:52:28" (1/1) ... [2018-09-19 12:52:29,006 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 12:52:30,453 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 12:52:30,475 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 12:52:31,269 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 12:52:31,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31 WrapperNode [2018-09-19 12:52:31,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 12:52:31,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 12:52:31,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 12:52:31,722 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 12:52:31,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (1/1) ... [2018-09-19 12:52:31,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (1/1) ... [2018-09-19 12:52:32,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 12:52:32,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 12:52:32,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 12:52:32,073 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 12:52:32,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (1/1) ... [2018-09-19 12:52:32,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (1/1) ... [2018-09-19 12:52:32,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (1/1) ... [2018-09-19 12:52:32,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (1/1) ... [2018-09-19 12:52:33,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (1/1) ... [2018-09-19 12:52:33,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (1/1) ... [2018-09-19 12:52:33,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (1/1) ... [2018-09-19 12:52:33,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 12:52:33,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 12:52:33,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 12:52:33,277 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 12:52:33,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (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 [2018-09-19 12:52:33,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 12:52:33,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 12:52:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-19 12:52:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-19 12:52:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-19 12:52:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-19 12:52:33,356 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-19 12:52:33,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-19 12:52:33,357 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-19 12:52:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-19 12:52:33,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 12:52:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 12:52:33,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 12:52:33,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 12:52:44,009 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 12:52:44,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 12:52:44 BoogieIcfgContainer [2018-09-19 12:52:44,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 12:52:44,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 12:52:44,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 12:52:44,014 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 12:52:44,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 12:52:28" (1/3) ... [2018-09-19 12:52:44,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e2147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 12:52:44, skipping insertion in model container [2018-09-19 12:52:44,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 12:52:31" (2/3) ... [2018-09-19 12:52:44,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e2147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 12:52:44, skipping insertion in model container [2018-09-19 12:52:44,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 12:52:44" (3/3) ... [2018-09-19 12:52:44,018 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label27_true-unreach-call.c [2018-09-19 12:52:44,027 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 12:52:44,034 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 12:52:44,097 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 12:52:44,097 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 12:52:44,098 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 12:52:44,098 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 12:52:44,098 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 12:52:44,098 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 12:52:44,098 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 12:52:44,099 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 12:52:44,099 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 12:52:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-19 12:52:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 12:52:44,163 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:52:44,164 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] [2018-09-19 12:52:44,165 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:52:44,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1638036668, now seen corresponding path program 1 times [2018-09-19 12:52:44,171 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:52:44,172 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 53 with the following transitions: [2018-09-19 12:52:44,175 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], [2943], [2945], [4242], [4246], [4252], [4256], [4269], [4270], [4271], [4273] [2018-09-19 12:52:44,224 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:52:44,224 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:52:44,591 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:52:44,594 INFO L272 AbstractInterpreter]: Visited 51 different actions 51 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-19 12:52:44,653 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:52:44,984 INFO L232 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 72.82% of their original sizes. [2018-09-19 12:52:44,985 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:52:45,247 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:52:45,253 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:52:45,253 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 12:52:45,253 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:52:45,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 12:52:45,267 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 12:52:45,268 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 12:52:45,272 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 6 states. [2018-09-19 12:53:00,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:00,786 INFO L93 Difference]: Finished difference Result 3044 states and 5648 transitions. [2018-09-19 12:53:00,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 12:53:00,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2018-09-19 12:53:00,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:00,826 INFO L225 Difference]: With dead ends: 3044 [2018-09-19 12:53:00,827 INFO L226 Difference]: Without dead ends: 1922 [2018-09-19 12:53:00,839 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 12:53:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-09-19 12:53:00,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1920. [2018-09-19 12:53:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2018-09-19 12:53:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2831 transitions. [2018-09-19 12:53:00,996 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2831 transitions. Word has length 52 [2018-09-19 12:53:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:00,997 INFO L480 AbstractCegarLoop]: Abstraction has 1920 states and 2831 transitions. [2018-09-19 12:53:00,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 12:53:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2831 transitions. [2018-09-19 12:53:01,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-19 12:53:01,005 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:01,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:53:01,006 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:01,006 INFO L82 PathProgramCache]: Analyzing trace with hash 778983056, now seen corresponding path program 1 times [2018-09-19 12:53:01,006 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:01,007 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-09-19 12:53:01,007 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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] [2018-09-19 12:53:01,014 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:01,014 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:01,486 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:01,487 INFO L272 AbstractInterpreter]: Visited 108 different actions 311 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:53:01,525 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:01,858 INFO L232 lantSequenceWeakener]: Weakened 150 states. On average, predicates are now at 71.54% of their original sizes. [2018-09-19 12:53:01,858 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:02,628 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:02,628 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:02,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:02,629 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:02,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:02,630 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:02,631 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:02,631 INFO L87 Difference]: Start difference. First operand 1920 states and 2831 transitions. Second operand 10 states. [2018-09-19 12:53:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:18,710 INFO L93 Difference]: Finished difference Result 3841 states and 6447 transitions. [2018-09-19 12:53:18,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:53:18,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 153 [2018-09-19 12:53:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:18,724 INFO L225 Difference]: With dead ends: 3841 [2018-09-19 12:53:18,724 INFO L226 Difference]: Without dead ends: 2731 [2018-09-19 12:53:18,729 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:53:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2018-09-19 12:53:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2726. [2018-09-19 12:53:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2726 states. [2018-09-19 12:53:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3662 transitions. [2018-09-19 12:53:18,787 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3662 transitions. Word has length 153 [2018-09-19 12:53:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:18,788 INFO L480 AbstractCegarLoop]: Abstraction has 2726 states and 3662 transitions. [2018-09-19 12:53:18,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:53:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3662 transitions. [2018-09-19 12:53:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-19 12:53:18,793 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:18,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:53:18,794 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:18,794 INFO L82 PathProgramCache]: Analyzing trace with hash 942588441, now seen corresponding path program 1 times [2018-09-19 12:53:18,794 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:18,795 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 183 with the following transitions: [2018-09-19 12:53:18,795 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:53:18,801 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:18,801 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:18,970 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:53:19,284 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:19,284 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:53:19,323 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:19,710 INFO L232 lantSequenceWeakener]: Weakened 179 states. On average, predicates are now at 71.42% of their original sizes. [2018-09-19 12:53:19,711 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:20,442 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:20,442 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:20,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:20,443 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:20,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:20,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:20,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:20,444 INFO L87 Difference]: Start difference. First operand 2726 states and 3662 transitions. Second operand 10 states. [2018-09-19 12:53:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:41,360 INFO L93 Difference]: Finished difference Result 4658 states and 7291 transitions. [2018-09-19 12:53:41,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:53:41,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 182 [2018-09-19 12:53:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:41,379 INFO L225 Difference]: With dead ends: 4658 [2018-09-19 12:53:41,379 INFO L226 Difference]: Without dead ends: 3548 [2018-09-19 12:53:41,383 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 188 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:53:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2018-09-19 12:53:41,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3542. [2018-09-19 12:53:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3542 states. [2018-09-19 12:53:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 4500 transitions. [2018-09-19 12:53:41,455 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 4500 transitions. Word has length 182 [2018-09-19 12:53:41,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:41,456 INFO L480 AbstractCegarLoop]: Abstraction has 3542 states and 4500 transitions. [2018-09-19 12:53:41,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:53:41,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 4500 transitions. [2018-09-19 12:53:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-09-19 12:53:41,462 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:41,462 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-19 12:53:41,463 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:41,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1793603556, now seen corresponding path program 1 times [2018-09-19 12:53:41,463 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:41,464 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-09-19 12:53:41,464 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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], [3237], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:53:41,468 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:41,469 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:41,646 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:53:41,807 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:41,807 INFO L272 AbstractInterpreter]: Visited 109 different actions 423 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:53:41,834 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:42,198 INFO L232 lantSequenceWeakener]: Weakened 244 states. On average, predicates are now at 71.3% of their original sizes. [2018-09-19 12:53:42,198 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:42,802 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:42,803 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:42,803 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:42,803 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:42,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:42,804 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:42,805 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:42,805 INFO L87 Difference]: Start difference. First operand 3542 states and 4500 transitions. Second operand 10 states. [2018-09-19 12:53:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:53:58,168 INFO L93 Difference]: Finished difference Result 6286 states and 8969 transitions. [2018-09-19 12:53:58,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:53:58,170 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 247 [2018-09-19 12:53:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:53:58,191 INFO L225 Difference]: With dead ends: 6286 [2018-09-19 12:53:58,191 INFO L226 Difference]: Without dead ends: 4360 [2018-09-19 12:53:58,197 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:53:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2018-09-19 12:53:58,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 4349. [2018-09-19 12:53:58,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4349 states. [2018-09-19 12:53:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4349 states to 4349 states and 5346 transitions. [2018-09-19 12:53:58,289 INFO L78 Accepts]: Start accepts. Automaton has 4349 states and 5346 transitions. Word has length 247 [2018-09-19 12:53:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:53:58,290 INFO L480 AbstractCegarLoop]: Abstraction has 4349 states and 5346 transitions. [2018-09-19 12:53:58,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:53:58,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4349 states and 5346 transitions. [2018-09-19 12:53:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-09-19 12:53:58,295 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:53:58,296 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-19 12:53:58,296 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:53:58,296 INFO L82 PathProgramCache]: Analyzing trace with hash -715322364, now seen corresponding path program 1 times [2018-09-19 12:53:58,296 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:53:58,297 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-09-19 12:53:58,297 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:53:58,301 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:53:58,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:53:58,471 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:53:58,750 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:53:58,750 INFO L272 AbstractInterpreter]: Visited 114 different actions 554 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 26 variables. [2018-09-19 12:53:58,788 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:53:59,204 INFO L232 lantSequenceWeakener]: Weakened 256 states. On average, predicates are now at 71.28% of their original sizes. [2018-09-19 12:53:59,204 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:53:59,511 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:53:59,511 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:53:59,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:53:59,511 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:53:59,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:53:59,512 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:53:59,513 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:53:59,513 INFO L87 Difference]: Start difference. First operand 4349 states and 5346 transitions. Second operand 10 states. [2018-09-19 12:54:16,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:54:16,972 INFO L93 Difference]: Finished difference Result 7115 states and 9845 transitions. [2018-09-19 12:54:16,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 12:54:16,972 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 259 [2018-09-19 12:54:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:54:16,994 INFO L225 Difference]: With dead ends: 7115 [2018-09-19 12:54:16,994 INFO L226 Difference]: Without dead ends: 5189 [2018-09-19 12:54:17,001 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 266 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 12:54:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2018-09-19 12:54:17,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 5167. [2018-09-19 12:54:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5167 states. [2018-09-19 12:54:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 6284 transitions. [2018-09-19 12:54:17,262 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 6284 transitions. Word has length 259 [2018-09-19 12:54:17,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:54:17,263 INFO L480 AbstractCegarLoop]: Abstraction has 5167 states and 6284 transitions. [2018-09-19 12:54:17,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:54:17,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 6284 transitions. [2018-09-19 12:54:17,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-09-19 12:54:17,268 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:54:17,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:54:17,269 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:54:17,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1184546596, now seen corresponding path program 1 times [2018-09-19 12:54:17,270 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:54:17,270 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 276 with the following transitions: [2018-09-19 12:54:17,270 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3599], [3603], [3614], [3618], [3622], [3626], [3630], [3634], [3638], [3642], [3646], [3650], [3654], [3658], [3662], [3666], [3670], [3674], [3678], [3682], [3686], [3690], [3694], [3698], [3709], [3713], [3717], [3721], [3725], [3729], [3733], [3737], [3741], [3745], [3749], [3753], [3757], [3768], [3772], [3776], [3780], [3784], [3788], [3792], [3796], [3800], [3804], [3815], [3819], [3823], [3827], [3831], [3835], [3839], [3843], [3847], [3851], [3862], [3865], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:54:17,276 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:54:17,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:54:17,521 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:54:17,938 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:54:17,939 INFO L272 AbstractInterpreter]: Visited 230 different actions 677 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:54:17,970 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:54:18,376 INFO L232 lantSequenceWeakener]: Weakened 272 states. On average, predicates are now at 71.22% of their original sizes. [2018-09-19 12:54:18,377 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:54:18,646 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:54:18,647 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:54:18,647 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:54:18,647 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:54:18,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:54:18,648 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:54:18,649 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:54:18,649 INFO L87 Difference]: Start difference. First operand 5167 states and 6284 transitions. Second operand 10 states. [2018-09-19 12:54:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:54:35,727 INFO L93 Difference]: Finished difference Result 9545 states and 12511 transitions. [2018-09-19 12:54:35,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:54:35,728 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 275 [2018-09-19 12:54:35,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:54:35,751 INFO L225 Difference]: With dead ends: 9545 [2018-09-19 12:54:35,752 INFO L226 Difference]: Without dead ends: 6800 [2018-09-19 12:54:35,759 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 281 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:54:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2018-09-19 12:54:35,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 6794. [2018-09-19 12:54:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6794 states. [2018-09-19 12:54:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6794 states to 6794 states and 7947 transitions. [2018-09-19 12:54:35,889 INFO L78 Accepts]: Start accepts. Automaton has 6794 states and 7947 transitions. Word has length 275 [2018-09-19 12:54:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:54:35,890 INFO L480 AbstractCegarLoop]: Abstraction has 6794 states and 7947 transitions. [2018-09-19 12:54:35,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:54:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 6794 states and 7947 transitions. [2018-09-19 12:54:35,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-09-19 12:54:35,895 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:54:35,896 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-19 12:54:35,896 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:54:35,896 INFO L82 PathProgramCache]: Analyzing trace with hash 870858477, now seen corresponding path program 1 times [2018-09-19 12:54:35,897 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:54:35,897 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-09-19 12:54:35,897 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:54:35,900 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:54:35,900 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:54:36,024 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:54:36,487 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:54:36,487 INFO L272 AbstractInterpreter]: Visited 138 different actions 675 times. Merged at 7 different actions 29 times. Never widened. Found 6 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:54:36,501 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:54:36,882 INFO L232 lantSequenceWeakener]: Weakened 280 states. On average, predicates are now at 71.24% of their original sizes. [2018-09-19 12:54:36,882 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:54:36,998 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:54:36,998 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:54:36,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:54:36,998 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:54:36,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:54:36,999 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:54:36,999 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:54:37,000 INFO L87 Difference]: Start difference. First operand 6794 states and 7947 transitions. Second operand 10 states. [2018-09-19 12:54:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:54:56,993 INFO L93 Difference]: Finished difference Result 13654 states and 16856 transitions. [2018-09-19 12:54:57,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 12:54:57,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 283 [2018-09-19 12:54:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:54:57,032 INFO L225 Difference]: With dead ends: 13654 [2018-09-19 12:54:57,033 INFO L226 Difference]: Without dead ends: 9279 [2018-09-19 12:54:57,043 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 290 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 12:54:57,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9279 states. [2018-09-19 12:54:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9279 to 9252. [2018-09-19 12:54:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9252 states. [2018-09-19 12:54:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9252 states to 9252 states and 10537 transitions. [2018-09-19 12:54:57,212 INFO L78 Accepts]: Start accepts. Automaton has 9252 states and 10537 transitions. Word has length 283 [2018-09-19 12:54:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:54:57,214 INFO L480 AbstractCegarLoop]: Abstraction has 9252 states and 10537 transitions. [2018-09-19 12:54:57,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:54:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 9252 states and 10537 transitions. [2018-09-19 12:54:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-09-19 12:54:57,221 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:54:57,222 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-19 12:54:57,222 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:54:57,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1110595704, now seen corresponding path program 1 times [2018-09-19 12:54:57,223 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:54:57,223 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 326 with the following transitions: [2018-09-19 12:54:57,223 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:54:57,226 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:54:57,226 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:54:57,392 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:54:58,559 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:54:58,559 INFO L272 AbstractInterpreter]: Visited 110 different actions 647 times. Merged at 8 different actions 42 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:54:58,590 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:54:59,338 INFO L232 lantSequenceWeakener]: Weakened 322 states. On average, predicates are now at 71.21% of their original sizes. [2018-09-19 12:54:59,338 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:54:59,458 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:54:59,458 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:54:59,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:54:59,458 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:54:59,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:54:59,459 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:54:59,459 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:54:59,459 INFO L87 Difference]: Start difference. First operand 9252 states and 10537 transitions. Second operand 10 states. [2018-09-19 12:55:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:55:11,419 INFO L93 Difference]: Finished difference Result 15294 states and 18522 transitions. [2018-09-19 12:55:11,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 12:55:11,421 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 325 [2018-09-19 12:55:11,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:55:11,446 INFO L225 Difference]: With dead ends: 15294 [2018-09-19 12:55:11,446 INFO L226 Difference]: Without dead ends: 10085 [2018-09-19 12:55:11,458 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 331 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-09-19 12:55:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10085 states. [2018-09-19 12:55:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10085 to 10061. [2018-09-19 12:55:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10061 states. [2018-09-19 12:55:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10061 states to 10061 states and 11413 transitions. [2018-09-19 12:55:11,627 INFO L78 Accepts]: Start accepts. Automaton has 10061 states and 11413 transitions. Word has length 325 [2018-09-19 12:55:11,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:55:11,628 INFO L480 AbstractCegarLoop]: Abstraction has 10061 states and 11413 transitions. [2018-09-19 12:55:11,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:55:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 10061 states and 11413 transitions. [2018-09-19 12:55:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-09-19 12:55:11,635 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:55:11,636 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-19 12:55:11,636 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:55:11,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1309738316, now seen corresponding path program 1 times [2018-09-19 12:55:11,636 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:55:11,637 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-09-19 12:55:11,637 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [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], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:55:11,639 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:55:11,639 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:55:11,985 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:55:12,423 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:55:12,423 INFO L272 AbstractInterpreter]: Visited 115 different actions 675 times. Merged at 8 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-19 12:55:12,461 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:55:12,957 INFO L232 lantSequenceWeakener]: Weakened 332 states. On average, predicates are now at 71.2% of their original sizes. [2018-09-19 12:55:12,957 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:55:13,063 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:55:13,064 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:55:13,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:55:13,064 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:55:13,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:55:13,065 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:55:13,065 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:55:13,065 INFO L87 Difference]: Start difference. First operand 10061 states and 11413 transitions. Second operand 10 states. [2018-09-19 12:55:35,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:55:35,203 INFO L93 Difference]: Finished difference Result 17756 states and 21202 transitions. [2018-09-19 12:55:35,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 12:55:35,204 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 335 [2018-09-19 12:55:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:55:35,237 INFO L225 Difference]: With dead ends: 17756 [2018-09-19 12:55:35,237 INFO L226 Difference]: Without dead ends: 11734 [2018-09-19 12:55:35,250 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 342 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 12:55:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11734 states. [2018-09-19 12:55:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11734 to 11704. [2018-09-19 12:55:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11704 states. [2018-09-19 12:55:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 13240 transitions. [2018-09-19 12:55:35,440 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 13240 transitions. Word has length 335 [2018-09-19 12:55:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:55:35,441 INFO L480 AbstractCegarLoop]: Abstraction has 11704 states and 13240 transitions. [2018-09-19 12:55:35,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 12:55:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 13240 transitions. [2018-09-19 12:55:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-19 12:55:35,450 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:55:35,450 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-19 12:55:35,451 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:55:35,451 INFO L82 PathProgramCache]: Analyzing trace with hash 309907235, now seen corresponding path program 1 times [2018-09-19 12:55:35,451 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:55:35,451 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-09-19 12:55:35,451 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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], [3210], [3213], [3217], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:55:35,454 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:55:35,454 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:55:35,596 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:55:35,964 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:55:35,964 INFO L272 AbstractInterpreter]: Visited 117 different actions 679 times. Merged at 8 different actions 40 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 2 different actions. Largest state had 26 variables. [2018-09-19 12:55:35,997 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:55:36,495 INFO L232 lantSequenceWeakener]: Weakened 347 states. On average, predicates are now at 71.25% of their original sizes. [2018-09-19 12:55:36,495 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:55:37,461 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:55:37,462 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:55:37,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 12:55:37,462 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:55:37,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 12:55:37,462 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 12:55:37,463 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-19 12:55:37,463 INFO L87 Difference]: Start difference. First operand 11704 states and 13240 transitions. Second operand 12 states. [2018-09-19 12:56:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 12:56:21,477 INFO L93 Difference]: Finished difference Result 22751 states and 29077 transitions. [2018-09-19 12:56:21,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-19 12:56:21,478 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 350 [2018-09-19 12:56:21,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 12:56:21,507 INFO L225 Difference]: With dead ends: 22751 [2018-09-19 12:56:21,508 INFO L226 Difference]: Without dead ends: 15901 [2018-09-19 12:56:21,521 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 375 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2018-09-19 12:56:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15901 states. [2018-09-19 12:56:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15901 to 15812. [2018-09-19 12:56:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15812 states. [2018-09-19 12:56:21,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15812 states to 15812 states and 18058 transitions. [2018-09-19 12:56:21,747 INFO L78 Accepts]: Start accepts. Automaton has 15812 states and 18058 transitions. Word has length 350 [2018-09-19 12:56:21,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 12:56:21,748 INFO L480 AbstractCegarLoop]: Abstraction has 15812 states and 18058 transitions. [2018-09-19 12:56:21,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 12:56:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 15812 states and 18058 transitions. [2018-09-19 12:56:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-09-19 12:56:21,757 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 12:56:21,757 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 12:56:21,758 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 12:56:21,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1657330320, now seen corresponding path program 1 times [2018-09-19 12:56:21,758 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 12:56:21,758 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-09-19 12:56:21,759 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], [2943], [2945], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [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], [3237], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-19 12:56:21,761 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-19 12:56:21,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 12:56:21,903 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 12:56:22,253 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 12:56:22,254 INFO L272 AbstractInterpreter]: Visited 115 different actions 680 times. Merged at 8 different actions 45 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 2 different actions. Largest state had 26 variables. [2018-09-19 12:56:22,281 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 12:56:22,787 INFO L232 lantSequenceWeakener]: Weakened 350 states. On average, predicates are now at 71.18% of their original sizes. [2018-09-19 12:56:22,787 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 12:56:22,944 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 12:56:22,944 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 12:56:22,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 12:56:22,945 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 12:56:22,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 12:56:22,946 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 12:56:22,946 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 12:56:22,946 INFO L87 Difference]: Start difference. First operand 15812 states and 18058 transitions. Second operand 10 states. Received shutdown request... [2018-09-19 12:56:29,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-19 12:56:29,449 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 12:56:29,455 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 12:56:29,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 12:56:29 BoogieIcfgContainer [2018-09-19 12:56:29,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 12:56:29,456 INFO L168 Benchmark]: Toolchain (without parser) took 240479.88 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -679.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-19 12:56:29,458 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 12:56:29,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2738.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-19 12:56:29,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 351.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-19 12:56:29,460 INFO L168 Benchmark]: Boogie Preprocessor took 1203.38 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 983.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-19 12:56:29,461 INFO L168 Benchmark]: RCFGBuilder took 10733.68 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 165.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -6.9 MB). Peak memory consumption was 745.2 MB. Max. memory is 7.1 GB. [2018-09-19 12:56:29,462 INFO L168 Benchmark]: TraceAbstraction took 225444.35 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 242.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-19 12:56:29,468 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2738.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 351.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1203.38 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 983.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10733.68 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 165.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -6.9 MB). Peak memory consumption was 745.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225444.35 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 242.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (15812states) and FLOYD_HOARE automaton (currently 17 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (5357 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 225.3s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 207.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12420 SDtfs, 28940 SDslu, 9538 SDs, 0 SdLazy, 125519 SolverSat, 9474 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 179.3s Time, PredicateUnifierStatistics: 22 DeclaredPredicates, 2896 GetRequests, 2717 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15812occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.9s AbstIntTime, 11 AbstIntIterations, 11 AbstIntStrong, 0.9973970952447446 AbsIntWeakeningRatio, 0.1048876204067071 AbsIntAvgWeakeningVarsNumRemoved, 23.41098822689975 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 222 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label27_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_12-56-29-482.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label27_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_12-56-29-482.csv Completed graceful shutdown