java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:49:02,289 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:49:02,291 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:49:02,303 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:49:02,303 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:49:02,304 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:49:02,305 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:49:02,307 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:49:02,309 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:49:02,310 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:49:02,310 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:49:02,311 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:49:02,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:49:02,313 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:49:02,314 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:49:02,315 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:49:02,315 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:49:02,317 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:49:02,319 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:49:02,321 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:49:02,322 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:49:02,323 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:49:02,326 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:49:02,326 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:49:02,326 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:49:02,327 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:49:02,328 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:49:02,329 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:49:02,329 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:49:02,330 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:49:02,331 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:49:02,331 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:49:02,334 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:49:02,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:49:02,361 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:49:02,362 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:49:02,362 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:49:02,363 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:49:02,363 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:49:02,363 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:49:02,365 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:49:02,365 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:49:02,365 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:49:02,365 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:49:02,366 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:49:02,366 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:49:02,366 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:49:02,366 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:49:02,366 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:49:02,367 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:49:02,367 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:49:02,367 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:49:02,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:49:02,367 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:49:02,367 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:49:02,368 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:49:02,368 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:49:02,368 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:49:02,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:49:02,368 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:49:02,369 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:49:02,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:49:02,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:49:02,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:49:02,469 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:49:02,469 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:49:02,470 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label48_true-unreach-call.c [2018-10-23 20:49:02,540 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a440b695e/d766a6c85374454485d70df251212f21/FLAG445fc1f11 [2018-10-23 20:49:03,306 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:49:03,307 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label48_true-unreach-call.c [2018-10-23 20:49:03,332 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a440b695e/d766a6c85374454485d70df251212f21/FLAG445fc1f11 [2018-10-23 20:49:03,355 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a440b695e/d766a6c85374454485d70df251212f21 [2018-10-23 20:49:03,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:49:03,371 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:49:03,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:49:03,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:49:03,377 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:49:03,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:49:03" (1/1) ... [2018-10-23 20:49:03,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b27a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:03, skipping insertion in model container [2018-10-23 20:49:03,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:49:03" (1/1) ... [2018-10-23 20:49:03,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:49:03,520 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:49:04,439 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:49:04,444 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:49:04,825 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:49:04,848 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:49:04,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04 WrapperNode [2018-10-23 20:49:04,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:49:04,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:49:04,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:49:04,851 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:49:04,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... [2018-10-23 20:49:04,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... [2018-10-23 20:49:05,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:49:05,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:49:05,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:49:05,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:49:05,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... [2018-10-23 20:49:05,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... [2018-10-23 20:49:05,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... [2018-10-23 20:49:05,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... [2018-10-23 20:49:05,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... [2018-10-23 20:49:05,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... [2018-10-23 20:49:05,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... [2018-10-23 20:49:05,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:49:05,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:49:05,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:49:05,683 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:49:05,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 20:49:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:49:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:49:05,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:49:15,655 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:49:15,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:49:15 BoogieIcfgContainer [2018-10-23 20:49:15,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:49:15,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:49:15,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:49:15,667 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:49:15,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:49:03" (1/3) ... [2018-10-23 20:49:15,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bf8d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:49:15, skipping insertion in model container [2018-10-23 20:49:15,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:49:04" (2/3) ... [2018-10-23 20:49:15,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bf8d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:49:15, skipping insertion in model container [2018-10-23 20:49:15,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:49:15" (3/3) ... [2018-10-23 20:49:15,675 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label48_true-unreach-call.c [2018-10-23 20:49:15,685 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:49:15,700 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:49:15,716 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:49:15,759 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:49:15,760 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:49:15,760 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:49:15,760 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:49:15,760 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:49:15,760 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:49:15,760 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:49:15,761 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:49:15,761 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:49:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:49:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-23 20:49:15,817 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:49:15,822 INFO L375 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] [2018-10-23 20:49:15,824 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:49:15,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:49:15,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1934902334, now seen corresponding path program 1 times [2018-10-23 20:49:15,833 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:49:15,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:49:15,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:15,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:15,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:49:16,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:49:16,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:49:16,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:49:16,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:49:16,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:49:16,346 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:49:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:49:26,682 INFO L93 Difference]: Finished difference Result 2102 states and 3914 transitions. [2018-10-23 20:49:26,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:49:26,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-10-23 20:49:26,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:49:26,724 INFO L225 Difference]: With dead ends: 2102 [2018-10-23 20:49:26,724 INFO L226 Difference]: Without dead ends: 1504 [2018-10-23 20:49:26,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:49:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2018-10-23 20:49:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1491. [2018-10-23 20:49:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2018-10-23 20:49:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2416 transitions. [2018-10-23 20:49:26,856 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2416 transitions. Word has length 44 [2018-10-23 20:49:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:49:26,857 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 2416 transitions. [2018-10-23 20:49:26,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:49:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2416 transitions. [2018-10-23 20:49:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-23 20:49:26,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:49:26,863 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:49:26,863 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:49:26,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:49:26,863 INFO L82 PathProgramCache]: Analyzing trace with hash -168526854, now seen corresponding path program 1 times [2018-10-23 20:49:26,863 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:49:26,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:49:26,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:26,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:26,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:49:27,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:49:27,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:49:27,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:49:27,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:49:27,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:49:27,078 INFO L87 Difference]: Start difference. First operand 1491 states and 2416 transitions. Second operand 4 states. [2018-10-23 20:49:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:49:36,304 INFO L93 Difference]: Finished difference Result 4268 states and 6993 transitions. [2018-10-23 20:49:36,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:49:36,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2018-10-23 20:49:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:49:36,320 INFO L225 Difference]: With dead ends: 4268 [2018-10-23 20:49:36,320 INFO L226 Difference]: Without dead ends: 2779 [2018-10-23 20:49:36,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:49:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2018-10-23 20:49:36,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2018-10-23 20:49:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-10-23 20:49:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3841 transitions. [2018-10-23 20:49:36,391 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3841 transitions. Word has length 112 [2018-10-23 20:49:36,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:49:36,391 INFO L481 AbstractCegarLoop]: Abstraction has 2779 states and 3841 transitions. [2018-10-23 20:49:36,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:49:36,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3841 transitions. [2018-10-23 20:49:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-23 20:49:36,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:49:36,397 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:49:36,397 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:49:36,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:49:36,398 INFO L82 PathProgramCache]: Analyzing trace with hash -72535569, now seen corresponding path program 1 times [2018-10-23 20:49:36,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:49:36,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:49:36,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:36,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:36,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:49:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:49:36,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:49:36,743 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:49:36,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:49:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:49:36,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:49:53,407 WARN L179 SmtUtils]: Spent 16.33 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-23 20:49:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:49:53,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:49:53,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 20:49:53,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:49:53,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:49:53,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:49:53,766 INFO L87 Difference]: Start difference. First operand 2779 states and 3841 transitions. Second operand 7 states. [2018-10-23 20:50:04,124 WARN L179 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-23 20:50:13,547 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-23 20:53:32,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:53:32,325 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:53:32,330 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:53:32,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:53:32 BoogieIcfgContainer [2018-10-23 20:53:32,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:53:32,331 INFO L168 Benchmark]: Toolchain (without parser) took 268962.30 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 103.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:53:32,332 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-23 20:53:32,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1478.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:53:32,334 INFO L168 Benchmark]: Boogie Procedure Inliner took 510.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:53:32,335 INFO L168 Benchmark]: Boogie Preprocessor took 321.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:53:32,336 INFO L168 Benchmark]: RCFGBuilder took 9975.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 481.6 MB). Peak memory consumption was 481.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:53:32,337 INFO L168 Benchmark]: TraceAbstraction took 256667.07 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 460.3 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -873.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:53:32,341 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1478.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 510.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 321.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9975.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 481.6 MB). Peak memory consumption was 481.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256667.07 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 460.3 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -873.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 137]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 137). Cancelled while BasicCegarLoop was constructing difference of abstraction (2779states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (13997 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 256.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 238.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1185 SDtfs, 6268 SDslu, 824 SDs, 0 SdLazy, 10264 SolverSat, 3422 SolverUnsat, 85 SolverUnknown, 0 SolverNotchecked, 217.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2779occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 386 NumberOfCodeBlocks, 386 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 382 ConstructedInterpolants, 42 QuantifiedInterpolants, 894454 SizeOfPredicates, 1 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 82/123 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown