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_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 22:45:44,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 22:45:44,876 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 22:45:44,888 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 22:45:44,889 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 22:45:44,890 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 22:45:44,891 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 22:45:44,893 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 22:45:44,894 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 22:45:44,895 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 22:45:44,896 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 22:45:44,896 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 22:45:44,897 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 22:45:44,898 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 22:45:44,899 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 22:45:44,900 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 22:45:44,901 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 22:45:44,903 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 22:45:44,907 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 22:45:44,911 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 22:45:44,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 22:45:44,924 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 22:45:44,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 22:45:44,927 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 22:45:44,927 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 22:45:44,931 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 22:45:44,932 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 22:45:44,933 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 22:45:44,935 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 22:45:44,937 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 22:45:44,937 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 22:45:44,938 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 22:45:44,938 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 22:45:44,938 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 22:45:44,942 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 22:45:44,943 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 22:45:44,943 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 [2018-09-15 22:45:44,980 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 22:45:44,980 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 22:45:44,981 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 22:45:44,981 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 22:45:44,982 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 22:45:44,982 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 22:45:44,982 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 22:45:44,982 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 22:45:44,982 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-15 22:45:44,982 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 22:45:44,983 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 22:45:44,983 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 22:45:44,983 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 22:45:44,984 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 22:45:44,984 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 22:45:44,984 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 22:45:44,984 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 22:45:44,984 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 22:45:44,985 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 22:45:44,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 22:45:44,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 22:45:44,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 22:45:44,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 22:45:44,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 22:45:44,986 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 22:45:44,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 22:45:44,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 22:45:44,986 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 22:45:44,987 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 22:45:44,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 22:45:44,987 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 22:45:44,987 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 22:45:44,987 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 22:45:45,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 22:45:45,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 22:45:45,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 22:45:45,085 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 22:45:45,086 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 22:45:45,087 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c [2018-09-15 22:45:45,616 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07e6a0ec/9fbd095b77434b97a3e91635cf4853a2/FLAG83dd6f47f [2018-09-15 22:45:46,286 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 22:45:46,287 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c [2018-09-15 22:45:46,325 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07e6a0ec/9fbd095b77434b97a3e91635cf4853a2/FLAG83dd6f47f [2018-09-15 22:45:46,340 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07e6a0ec/9fbd095b77434b97a3e91635cf4853a2 [2018-09-15 22:45:46,366 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 22:45:46,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 22:45:46,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 22:45:46,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 22:45:46,391 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 22:45:46,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 10:45:46" (1/1) ... [2018-09-15 22:45:46,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18420f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:46, skipping insertion in model container [2018-09-15 22:45:46,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 10:45:46" (1/1) ... [2018-09-15 22:45:46,437 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 22:45:48,636 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 22:45:48,684 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 22:45:49,832 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 22:45:50,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50 WrapperNode [2018-09-15 22:45:50,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 22:45:50,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 22:45:50,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 22:45:50,173 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 22:45:50,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... [2018-09-15 22:45:50,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... [2018-09-15 22:45:50,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 22:45:50,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 22:45:50,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 22:45:50,548 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 22:45:51,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... [2018-09-15 22:45:51,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... [2018-09-15 22:45:51,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... [2018-09-15 22:45:51,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... [2018-09-15 22:45:51,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... [2018-09-15 22:45:51,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... [2018-09-15 22:45:52,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... [2018-09-15 22:45:52,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 22:45:52,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 22:45:52,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 22:45:52,297 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 22:45:52,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 22:45:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 22:45:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 22:45:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-15 22:45:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-15 22:45:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-15 22:45:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-15 22:45:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 22:45:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 22:45:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 22:45:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 22:45:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 22:45:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 22:45:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 22:45:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 22:46:07,599 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 22:46:07,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 10:46:07 BoogieIcfgContainer [2018-09-15 22:46:07,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 22:46:07,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 22:46:07,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 22:46:07,612 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 22:46:07,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 10:45:46" (1/3) ... [2018-09-15 22:46:07,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6445af5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 10:46:07, skipping insertion in model container [2018-09-15 22:46:07,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:45:50" (2/3) ... [2018-09-15 22:46:07,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6445af5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 10:46:07, skipping insertion in model container [2018-09-15 22:46:07,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 10:46:07" (3/3) ... [2018-09-15 22:46:07,623 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label52_true-unreach-call.c [2018-09-15 22:46:07,637 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 22:46:07,649 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 22:46:07,737 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 22:46:07,738 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 22:46:07,738 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 22:46:07,738 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 22:46:07,738 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 22:46:07,739 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 22:46:07,739 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 22:46:07,739 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 22:46:07,739 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 22:46:07,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-15 22:46:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-15 22:46:07,819 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 22:46:07,821 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 22:46:07,824 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 22:46:07,830 INFO L82 PathProgramCache]: Analyzing trace with hash -774157709, now seen corresponding path program 1 times [2018-09-15 22:46:07,833 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 22:46:07,834 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 72 with the following transitions: [2018-09-15 22:46:07,837 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3091], [3095], [3097], [4242], [4246], [4252], [4256], [4269], [4270], [4271], [4273] [2018-09-15 22:46:07,888 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 22:46:07,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 22:46:20,292 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 22:46:20,296 INFO L272 AbstractInterpreter]: Visited 70 different actions 70 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-15 22:46:20,347 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 22:46:30,074 INFO L232 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 73.43% of their original sizes. [2018-09-15 22:46:30,074 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 22:46:30,264 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 22:46:30,266 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 22:46:30,266 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 22:46:30,267 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 22:46:30,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 22:46:30,282 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 22:46:30,282 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 22:46:30,285 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 6 states. [2018-09-15 22:46:44,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 22:46:44,242 INFO L93 Difference]: Finished difference Result 3044 states and 5648 transitions. [2018-09-15 22:46:44,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 22:46:44,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2018-09-15 22:46:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 22:46:44,283 INFO L225 Difference]: With dead ends: 3044 [2018-09-15 22:46:44,283 INFO L226 Difference]: Without dead ends: 1922 [2018-09-15 22:46:44,303 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 22:46:44,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-09-15 22:46:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1920. [2018-09-15 22:46:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2018-09-15 22:46:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2831 transitions. [2018-09-15 22:46:44,476 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2831 transitions. Word has length 71 [2018-09-15 22:46:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 22:46:44,477 INFO L480 AbstractCegarLoop]: Abstraction has 1920 states and 2831 transitions. [2018-09-15 22:46:44,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 22:46:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2831 transitions. [2018-09-15 22:46:44,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-15 22:46:44,488 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 22:46:44,489 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-15 22:46:44,489 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 22:46:44,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1253599712, now seen corresponding path program 1 times [2018-09-15 22:46:44,490 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 22:46:44,490 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-09-15 22:46:44,491 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3091], [3095], [3097], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-15 22:46:44,498 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-15 22:46:44,498 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown