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_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:53:21,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:53:21,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:53:21,369 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:53:21,369 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:53:21,370 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:53:21,372 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:53:21,373 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:53:21,375 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:53:21,376 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:53:21,377 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:53:21,377 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:53:21,378 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:53:21,379 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:53:21,380 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:53:21,381 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:53:21,382 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:53:21,384 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:53:21,386 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:53:21,387 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:53:21,388 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:53:21,390 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:53:21,393 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:53:21,394 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:53:21,394 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:53:21,395 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:53:21,396 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:53:21,396 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:53:21,399 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:53:21,402 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:53:21,402 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:53:21,404 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 21:53:21,407 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 [2018-10-26 21:53:21,436 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:53:21,436 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:53:21,437 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:53:21,437 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:53:21,441 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:53:21,441 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:53:21,442 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:53:21,442 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:53:21,442 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:53:21,442 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:53:21,442 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:53:21,444 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:53:21,444 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:53:21,444 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:53:21,444 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:53:21,444 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:53:21,445 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:53:21,445 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:53:21,445 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:53:21,445 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:53:21,445 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:53:21,446 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:53:21,447 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:53:21,447 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:53:21,447 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:53:21,447 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:53:21,448 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:53:21,448 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:53:21,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:53:21,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:53:21,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:53:21,524 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:53:21,524 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:53:21,525 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c [2018-10-26 21:53:21,584 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/05918531d/90f0c842da5349ab9e73e3fe802326d3/FLAG1974bc843 [2018-10-26 21:53:22,290 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:53:22,291 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c [2018-10-26 21:53:22,315 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/05918531d/90f0c842da5349ab9e73e3fe802326d3/FLAG1974bc843 [2018-10-26 21:53:22,334 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/05918531d/90f0c842da5349ab9e73e3fe802326d3 [2018-10-26 21:53:22,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:53:22,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:53:22,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:53:22,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:53:22,353 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:53:22,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:53:22" (1/1) ... [2018-10-26 21:53:22,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100fc25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:22, skipping insertion in model container [2018-10-26 21:53:22,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:53:22" (1/1) ... [2018-10-26 21:53:22,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:53:22,499 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:53:23,473 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:53:23,478 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:53:23,891 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:53:23,916 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:53:23,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23 WrapperNode [2018-10-26 21:53:23,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:53:23,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:53:23,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:53:23,919 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:53:23,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ... [2018-10-26 21:53:23,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ... [2018-10-26 21:53:24,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:53:24,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:53:24,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:53:24,436 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:53:24,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ... [2018-10-26 21:53:24,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ... [2018-10-26 21:53:24,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ... [2018-10-26 21:53:24,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ... [2018-10-26 21:53:24,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ... [2018-10-26 21:53:24,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ... [2018-10-26 21:53:24,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ... [2018-10-26 21:53:24,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:53:24,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:53:24,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:53:24,766 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:53:24,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (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 [2018-10-26 21:53:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:53:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:53:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:53:35,247 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:53:35,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:53:35 BoogieIcfgContainer [2018-10-26 21:53:35,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:53:35,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:53:35,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:53:35,254 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:53:35,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:53:22" (1/3) ... [2018-10-26 21:53:35,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a22646c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:53:35, skipping insertion in model container [2018-10-26 21:53:35,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (2/3) ... [2018-10-26 21:53:35,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a22646c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:53:35, skipping insertion in model container [2018-10-26 21:53:35,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:53:35" (3/3) ... [2018-10-26 21:53:35,258 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label36_true-unreach-call.c [2018-10-26 21:53:35,269 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:53:35,279 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:53:35,297 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:53:35,342 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:53:35,343 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:53:35,343 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:53:35,343 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:53:35,343 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:53:35,343 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:53:35,344 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:53:35,344 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:53:35,344 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:53:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 21:53:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-26 21:53:35,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:53:35,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:53:35,392 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:53:35,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:53:35,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1482679290, now seen corresponding path program 1 times [2018-10-26 21:53:35,401 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:53:35,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:53:35,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:35,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:53:35,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:53:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:53:35,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:53:35,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:53:35,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:53:36,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:53:36,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:53:36,005 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 21:53:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:53:48,689 INFO L93 Difference]: Finished difference Result 2097 states and 3909 transitions. [2018-10-26 21:53:48,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:53:48,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-26 21:53:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:53:48,724 INFO L225 Difference]: With dead ends: 2097 [2018-10-26 21:53:48,724 INFO L226 Difference]: Without dead ends: 1499 [2018-10-26 21:53:48,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:53:48,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2018-10-26 21:53:48,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1485. [2018-10-26 21:53:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-26 21:53:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2304 transitions. [2018-10-26 21:53:48,874 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2304 transitions. Word has length 58 [2018-10-26 21:53:48,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:53:48,875 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2304 transitions. [2018-10-26 21:53:48,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:53:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2304 transitions. [2018-10-26 21:53:48,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-26 21:53:48,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:53:48,887 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:53:48,887 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:53:48,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:53:48,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1628254546, now seen corresponding path program 1 times [2018-10-26 21:53:48,888 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:53:48,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:53:48,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:48,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:53:48,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:53:49,146 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:53:49,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:53:49,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:53:49,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:53:49,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:53:49,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:53:49,149 INFO L87 Difference]: Start difference. First operand 1485 states and 2304 transitions. Second operand 4 states. [2018-10-26 21:53:55,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:53:55,482 INFO L93 Difference]: Finished difference Result 4257 states and 6664 transitions. [2018-10-26 21:53:55,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:53:55,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-10-26 21:53:55,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:53:55,497 INFO L225 Difference]: With dead ends: 4257 [2018-10-26 21:53:55,497 INFO L226 Difference]: Without dead ends: 2774 [2018-10-26 21:53:55,503 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 [2018-10-26 21:53:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2018-10-26 21:53:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774. [2018-10-26 21:53:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2018-10-26 21:53:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3714 transitions. [2018-10-26 21:53:55,561 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3714 transitions. Word has length 126 [2018-10-26 21:53:55,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:53:55,562 INFO L481 AbstractCegarLoop]: Abstraction has 2774 states and 3714 transitions. [2018-10-26 21:53:55,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:53:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3714 transitions. [2018-10-26 21:53:55,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-26 21:53:55,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:53:55,565 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, 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] [2018-10-26 21:53:55,566 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:53:55,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:53:55,568 INFO L82 PathProgramCache]: Analyzing trace with hash -431004601, now seen corresponding path program 1 times [2018-10-26 21:53:55,568 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:53:55,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:53:55,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:55,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:53:55,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:53:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:53:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:53:55,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:53:55,875 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 [2018-10-26 21:53:55,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:53:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:53:55,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:54:12,510 WARN L179 SmtUtils]: Spent 16.28 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-26 21:54:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:13,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:54:13,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 21:54:13,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:54:13,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:54:13,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:54:13,114 INFO L87 Difference]: Start difference. First operand 2774 states and 3714 transitions. Second operand 7 states. [2018-10-26 21:54:23,557 WARN L179 SmtUtils]: Spent 8.09 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-26 21:54:33,025 WARN L179 SmtUtils]: Spent 8.10 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-26 21:57:53,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 21:57:53,613 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:57:53,619 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:57:53,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:57:53 BoogieIcfgContainer [2018-10-26 21:57:53,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:57:53,621 INFO L168 Benchmark]: Toolchain (without parser) took 271275.33 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -601.0 MB). Peak memory consumption was 538.8 MB. Max. memory is 7.1 GB. [2018-10-26 21:57:53,622 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-26 21:57:53,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1569.05 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. [2018-10-26 21:57:53,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 518.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:57:53,625 INFO L168 Benchmark]: Boogie Preprocessor took 330.07 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: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:57:53,626 INFO L168 Benchmark]: RCFGBuilder took 10483.30 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: 470.4 MB). Peak memory consumption was 470.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:57:53,626 INFO L168 Benchmark]: TraceAbstraction took 258369.64 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 339.7 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -324.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:57:53,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1569.05 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 518.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 330.07 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: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10483.30 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: 470.4 MB). Peak memory consumption was 470.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258369.64 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 339.7 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -324.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 179]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 179). Cancelled while BasicCegarLoop was constructing difference of abstraction (2774states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (6996 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 258.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 239.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1234 SDtfs, 4116 SDslu, 780 SDs, 0 SdLazy, 7886 SolverSat, 2365 SolverUnsat, 94 SolverUnknown, 0 SolverNotchecked, 219.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2774occurred 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, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 438 ConstructedInterpolants, 56 QuantifiedInterpolants, 1302530 SizeOfPredicates, 1 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 110/165 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown