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_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 14:42:00,119 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 14:42:00,123 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 14:42:00,142 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 14:42:00,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 14:42:00,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 14:42:00,145 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 14:42:00,146 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 14:42:00,148 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 14:42:00,149 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 14:42:00,150 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 14:42:00,150 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 14:42:00,151 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 14:42:00,152 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 14:42:00,153 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 14:42:00,154 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 14:42:00,155 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 14:42:00,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 14:42:00,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 14:42:00,160 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 14:42:00,161 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 14:42:00,162 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 14:42:00,165 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 14:42:00,165 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 14:42:00,165 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 14:42:00,166 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 14:42:00,167 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 14:42:00,168 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 14:42:00,169 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 14:42:00,170 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 14:42:00,170 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 14:42:00,171 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-15 14:42:00,171 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-15 14:42:00,172 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-15 14:42:00,173 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-15 14:42:00,173 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-15 14:42:00,174 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 14:42:00,200 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 14:42:00,200 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 14:42:00,204 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 14:42:00,205 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 14:42:00,205 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 14:42:00,206 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 14:42:00,206 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 14:42:00,206 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 14:42:00,206 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 14:42:00,207 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-15 14:42:00,207 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 14:42:00,207 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 14:42:00,209 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 14:42:00,209 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 14:42:00,210 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 14:42:00,210 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 14:42:00,213 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 14:42:00,213 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 14:42:00,213 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 14:42:00,214 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 14:42:00,214 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 14:42:00,214 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 14:42:00,214 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 14:42:00,215 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 14:42:00,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 14:42:00,215 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 14:42:00,215 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 14:42:00,217 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 14:42:00,217 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 14:42:00,218 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 14:42:00,218 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 14:42:00,218 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 14:42:00,218 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 14:42:00,219 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 14:42:00,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 14:42:00,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 14:42:00,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 14:42:00,341 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 14:42:00,342 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 14:42:00,343 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-09-15 14:42:00,771 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddfecfc5/4798dfc642ac4d63b88f87ccbbc10a15/FLAGda30d2930 [2018-09-15 14:42:01,304 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 14:42:01,305 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-09-15 14:42:01,341 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddfecfc5/4798dfc642ac4d63b88f87ccbbc10a15/FLAGda30d2930 [2018-09-15 14:42:01,359 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ddfecfc5/4798dfc642ac4d63b88f87ccbbc10a15 [2018-09-15 14:42:01,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 14:42:01,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 14:42:01,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 14:42:01,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 14:42:01,387 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 14:42:01,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:42:01" (1/1) ... [2018-09-15 14:42:01,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c5c827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:01, skipping insertion in model container [2018-09-15 14:42:01,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 02:42:01" (1/1) ... [2018-09-15 14:42:01,405 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 14:42:03,204 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:42:03,226 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 14:42:04,034 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 14:42:04,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04 WrapperNode [2018-09-15 14:42:04,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 14:42:04,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 14:42:04,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 14:42:04,480 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 14:42:04,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (1/1) ... [2018-09-15 14:42:04,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (1/1) ... [2018-09-15 14:42:04,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 14:42:04,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 14:42:04,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 14:42:04,863 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 14:42:05,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (1/1) ... [2018-09-15 14:42:05,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (1/1) ... [2018-09-15 14:42:05,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (1/1) ... [2018-09-15 14:42:05,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (1/1) ... [2018-09-15 14:42:06,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (1/1) ... [2018-09-15 14:42:06,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (1/1) ... [2018-09-15 14:42:06,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (1/1) ... [2018-09-15 14:42:06,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 14:42:06,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 14:42:06,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 14:42:06,317 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 14:42:06,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (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 14:42:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 14:42:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 14:42:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-15 14:42:06,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-15 14:42:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-15 14:42:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-15 14:42:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-15 14:42:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-15 14:42:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-15 14:42:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-15 14:42:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 14:42:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 14:42:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 14:42:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 14:42:18,302 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 14:42:18,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:42:18 BoogieIcfgContainer [2018-09-15 14:42:18,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 14:42:18,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 14:42:18,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 14:42:18,308 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 14:42:18,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 02:42:01" (1/3) ... [2018-09-15 14:42:18,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d9cc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:42:18, skipping insertion in model container [2018-09-15 14:42:18,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 02:42:04" (2/3) ... [2018-09-15 14:42:18,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d9cc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 02:42:18, skipping insertion in model container [2018-09-15 14:42:18,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 02:42:18" (3/3) ... [2018-09-15 14:42:18,312 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label05_true-unreach-call.c [2018-09-15 14:42:18,323 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 14:42:18,333 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 14:42:18,401 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 14:42:18,402 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 14:42:18,402 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 14:42:18,402 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 14:42:18,402 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 14:42:18,402 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 14:42:18,402 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 14:42:18,402 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 14:42:18,403 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 14:42:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-15 14:42:18,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-15 14:42:18,467 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:42:18,468 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] [2018-09-15 14:42:18,469 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:42:18,474 INFO L82 PathProgramCache]: Analyzing trace with hash -192700485, now seen corresponding path program 1 times [2018-09-15 14:42:18,476 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:42:18,477 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-09-15 14:42:18,480 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], [2919], [2921], [4242], [4246], [4252], [4256], [4269], [4270], [4271], [4273] [2018-09-15 14:42:18,526 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:42:18,527 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 14:42:25,893 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 14:42:25,894 INFO L272 AbstractInterpreter]: Visited 48 different actions 48 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-15 14:42:25,911 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 14:42:31,720 INFO L232 lantSequenceWeakener]: Weakened 46 states. On average, predicates are now at 72.68% of their original sizes. [2018-09-15 14:42:31,720 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 14:42:31,948 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 14:42:31,949 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 14:42:31,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 14:42:31,949 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 14:42:31,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 14:42:31,959 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 14:42:31,960 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 14:42:31,962 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 6 states. [2018-09-15 14:42:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 14:42:49,566 INFO L93 Difference]: Finished difference Result 3044 states and 5648 transitions. [2018-09-15 14:42:49,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 14:42:49,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2018-09-15 14:42:49,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 14:42:49,605 INFO L225 Difference]: With dead ends: 3044 [2018-09-15 14:42:49,605 INFO L226 Difference]: Without dead ends: 1922 [2018-09-15 14:42:49,617 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 48 GetRequests, 44 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 14:42:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-09-15 14:42:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1920. [2018-09-15 14:42:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2018-09-15 14:42:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2831 transitions. [2018-09-15 14:42:49,823 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2831 transitions. Word has length 49 [2018-09-15 14:42:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 14:42:49,824 INFO L480 AbstractCegarLoop]: Abstraction has 1920 states and 2831 transitions. [2018-09-15 14:42:49,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 14:42:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2831 transitions. [2018-09-15 14:42:49,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-15 14:42:49,831 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 14:42:49,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:49,832 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 14:42:49,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1157427768, now seen corresponding path program 1 times [2018-09-15 14:42:49,833 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 14:42:49,833 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 151 with the following transitions: [2018-09-15 14:42:49,834 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], [2919], [2921], [2924], [2932], [2940], [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] [2018-09-15 14:42:49,840 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-15 14:42:49,840 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