java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 14:42:36,016 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 14:42:36,018 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 14:42:36,037 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 14:42:36,037 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 14:42:36,038 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 14:42:36,040 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 14:42:36,043 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 14:42:36,044 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 14:42:36,045 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 14:42:36,046 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 14:42:36,046 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 14:42:36,047 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 14:42:36,048 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 14:42:36,049 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 14:42:36,050 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 14:42:36,051 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 14:42:36,053 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 14:42:36,055 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 14:42:36,056 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 14:42:36,057 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 14:42:36,058 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 14:42:36,061 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 14:42:36,061 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 14:42:36,061 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 14:42:36,062 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 14:42:36,063 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 14:42:36,064 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 14:42:36,065 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 14:42:36,066 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 14:42:36,066 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 14:42:36,067 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 14:42:36,067 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 14:42:36,068 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 14:42:36,068 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 14:42:36,069 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 14:42:36,069 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-15 14:42:36,085 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 14:42:36,085 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 14:42:36,086 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 14:42:36,086 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 14:42:36,086 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 14:42:36,086 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 14:42:36,087 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 14:42:36,087 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 14:42:36,087 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 14:42:36,087 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 14:42:36,087 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 14:42:36,088 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 14:42:36,088 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 14:42:36,089 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 14:42:36,089 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 14:42:36,089 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 14:42:36,089 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 14:42:36,089 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 14:42:36,089 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 14:42:36,090 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 14:42:36,090 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 14:42:36,090 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 14:42:36,090 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 14:42:36,090 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 14:42:36,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:42:36,091 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 14:42:36,091 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 14:42:36,091 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 14:42:36,091 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 14:42:36,092 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 14:42:36,092 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 14:42:36,092 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 14:42:36,092 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 14:42:36,092 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 14:42:36,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 14:42:36,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 14:42:36,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 14:42:36,154 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 14:42:36,155 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 14:42:36,156 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-09-15 14:42:36,513 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d634d305e/5e7946a7dd1f44648f77bc89425bd668/FLAG2e7c67c14 [2018-09-15 14:42:37,020 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 14:42:37,021 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-09-15 14:42:37,060 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d634d305e/5e7946a7dd1f44648f77bc89425bd668/FLAG2e7c67c14 [2018-09-15 14:42:37,085 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d634d305e/5e7946a7dd1f44648f77bc89425bd668 [2018-09-15 14:42:37,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 14:42:37,104 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 14:42:37,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 14:42:37,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 14:42:37,116 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 14:42:37,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:42:37" (1/1) ... [2018-09-15 14:42:37,121 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 15.09 02:42:37, skipping insertion in model container [2018-09-15 14:42:37,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:42:37" (1/1) ... [2018-09-15 14:42:37,134 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 14:42:38,584 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:42:38,604 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 14:42:39,369 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:42:39,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39 WrapperNode [2018-09-15 14:42:39,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 14:42:39,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 14:42:39,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 14:42:39,848 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 14:42:39,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... [2018-09-15 14:42:39,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... [2018-09-15 14:42:40,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 14:42:40,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 14:42:40,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 14:42:40,192 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 14:42:41,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... [2018-09-15 14:42:41,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... [2018-09-15 14:42:41,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... [2018-09-15 14:42:41,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... [2018-09-15 14:42:41,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... [2018-09-15 14:42:41,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... [2018-09-15 14:42:41,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... [2018-09-15 14:42:41,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 14:42:41,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 14:42:41,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 14:42:41,664 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 14:42:41,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:42:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 14:42:41,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 14:42:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-15 14:42:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-15 14:42:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-15 14:42:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-15 14:42:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 14:42:41,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 14:42:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 14:42:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 14:42:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 14:42:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 14:42:41,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 14:42:41,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 14:42:52,769 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 14:42:52,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:42:52 BoogieIcfgContainer [2018-09-15 14:42:52,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 14:42:52,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 14:42:52,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 14:42:52,774 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 14:42:52,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 02:42:37" (1/3) ... [2018-09-15 14:42:52,775 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 15.09 02:42:52, skipping insertion in model container [2018-09-15 14:42:52,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:39" (2/3) ... [2018-09-15 14:42:52,776 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 15.09 02:42:52, skipping insertion in model container [2018-09-15 14:42:52,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:42:52" (3/3) ... [2018-09-15 14:42:52,778 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09_true-unreach-call.c [2018-09-15 14:42:52,787 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 14:42:52,796 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 14:42:52,875 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 14:42:52,876 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 14:42:52,876 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 14:42:52,876 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 14:42:52,876 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 14:42:52,876 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 14:42:52,877 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 14:42:52,877 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 14:42:52,877 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 14:42:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-15 14:42:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-15 14:42:52,941 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:42:52,942 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] [2018-09-15 14:42:52,943 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:42:52,949 INFO L82 PathProgramCache]: Analyzing trace with hash 688094243, now seen corresponding path program 1 times [2018-09-15 14:42:52,952 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:42:52,953 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 68 with the following transitions: [2018-09-15 14:42:52,956 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], [3063], [3065], [4242], [4246], [4252], [4256], [4269], [4270], [4271], [4273] [2018-09-15 14:42:53,009 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:42:53,010 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:43:02,736 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:43:02,738 INFO L272 AbstractInterpreter]: Visited 66 different actions 66 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-15 14:43:02,752 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:43:10,512 INFO L232 lantSequenceWeakener]: Weakened 64 states. On average, predicates are now at 73.33% of their original sizes. [2018-09-15 14:43:10,512 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:43:10,751 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:43:10,754 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:43:10,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 14:43:10,754 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:43:10,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 14:43:10,767 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 14:43:10,768 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:43:10,771 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 6 states. [2018-09-15 14:43:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:43:24,235 INFO L93 Difference]: Finished difference Result 3044 states and 5648 transitions. [2018-09-15 14:43:24,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 14:43:24,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2018-09-15 14:43:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:43:24,270 INFO L225 Difference]: With dead ends: 3044 [2018-09-15 14:43:24,270 INFO L226 Difference]: Without dead ends: 1922 [2018-09-15 14:43:24,283 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:43:24,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-09-15 14:43:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1920. [2018-09-15 14:43:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2018-09-15 14:43:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2831 transitions. [2018-09-15 14:43:24,437 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2831 transitions. Word has length 67 [2018-09-15 14:43:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:43:24,438 INFO L480 AbstractCegarLoop]: Abstraction has 1920 states and 2831 transitions. [2018-09-15 14:43:24,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 14:43:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2831 transitions. [2018-09-15 14:43:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-15 14:43:24,450 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:43:24,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 14:43:24,451 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:43:24,451 INFO L82 PathProgramCache]: Analyzing trace with hash -84457968, now seen corresponding path program 1 times [2018-09-15 14:43:24,451 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:43:24,452 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2018-09-15 14:43:24,452 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], [3063], [3065], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-09-15 14:43:24,463 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:43:24,463 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown