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_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:49:34,627 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:49:34,629 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:49:34,641 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:49:34,641 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:49:34,642 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:49:34,644 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:49:34,645 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:49:34,647 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:49:34,648 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:49:34,649 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:49:34,649 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:49:34,650 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:49:34,651 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:49:34,652 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:49:34,653 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:49:34,654 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:49:34,656 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:49:34,658 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:49:34,659 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:49:34,660 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:49:34,662 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:49:34,664 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:49:34,664 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:49:34,665 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:49:34,665 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:49:34,666 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:49:34,667 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:49:34,668 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:49:34,669 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:49:34,669 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:49:34,670 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:49:34,673 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 [2018-10-24 16:49:34,688 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:49:34,688 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:49:34,689 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:49:34,689 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:49:34,690 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:49:34,690 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:49:34,690 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:49:34,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:49:34,691 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:49:34,691 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:49:34,691 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:49:34,691 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:49:34,691 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:49:34,692 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:49:34,692 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:49:34,692 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:49:34,692 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:49:34,692 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:49:34,693 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:49:34,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:49:34,693 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:49:34,693 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:49:34,693 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:49:34,694 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:49:34,694 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:49:34,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:49:34,694 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:49:34,694 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:49:34,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:49:34,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:49:34,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:49:34,761 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:49:34,761 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:49:34,762 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label38_true-unreach-call.c [2018-10-24 16:49:34,825 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ce7a8bbdd/4bdb33635ab34f2ea44a7c2859ea5d15/FLAG099cc8f19 [2018-10-24 16:49:35,594 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:49:35,595 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label38_true-unreach-call.c [2018-10-24 16:49:35,624 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ce7a8bbdd/4bdb33635ab34f2ea44a7c2859ea5d15/FLAG099cc8f19 [2018-10-24 16:49:35,641 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ce7a8bbdd/4bdb33635ab34f2ea44a7c2859ea5d15 [2018-10-24 16:49:35,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:49:35,656 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:49:35,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:49:35,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:49:35,663 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:49:35,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:49:35" (1/1) ... [2018-10-24 16:49:35,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bedfbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:35, skipping insertion in model container [2018-10-24 16:49:35,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:49:35" (1/1) ... [2018-10-24 16:49:35,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:49:35,804 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:49:36,924 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:49:36,929 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:49:37,329 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:49:37,354 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:49:37,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37 WrapperNode [2018-10-24 16:49:37,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:49:37,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:49:37,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:49:37,357 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:49:37,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (1/1) ... [2018-10-24 16:49:37,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (1/1) ... [2018-10-24 16:49:37,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:49:37,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:49:37,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:49:37,893 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:49:37,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (1/1) ... [2018-10-24 16:49:37,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (1/1) ... [2018-10-24 16:49:37,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (1/1) ... [2018-10-24 16:49:37,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (1/1) ... [2018-10-24 16:49:38,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (1/1) ... [2018-10-24 16:49:38,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (1/1) ... [2018-10-24 16:49:38,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (1/1) ... [2018-10-24 16:49:38,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:49:38,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:49:38,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:49:38,203 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:49:38,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (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 [2018-10-24 16:49:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:49:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:49:38,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:49:48,721 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:49:48,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:49:48 BoogieIcfgContainer [2018-10-24 16:49:48,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:49:48,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:49:48,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:49:48,729 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:49:48,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:49:35" (1/3) ... [2018-10-24 16:49:48,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b94b1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:49:48, skipping insertion in model container [2018-10-24 16:49:48,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:49:37" (2/3) ... [2018-10-24 16:49:48,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b94b1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:49:48, skipping insertion in model container [2018-10-24 16:49:48,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:49:48" (3/3) ... [2018-10-24 16:49:48,736 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label38_true-unreach-call.c [2018-10-24 16:49:48,746 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:49:48,760 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:49:48,778 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:49:48,829 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:49:48,830 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:49:48,830 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:49:48,830 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:49:48,830 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:49:48,830 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:49:48,831 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:49:48,831 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:49:48,831 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:49:48,864 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:49:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-24 16:49:48,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:49:48,876 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] [2018-10-24 16:49:48,878 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:49:48,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:49:48,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-10-24 16:49:48,888 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:49:48,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:49:48,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:48,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:49:48,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:49:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:49:49,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:49:49,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:49:49,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:49:49,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:49:49,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:49:49,354 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:49:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:49:59,335 INFO L93 Difference]: Finished difference Result 2097 states and 3909 transitions. [2018-10-24 16:49:59,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:49:59,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-24 16:49:59,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:49:59,371 INFO L225 Difference]: With dead ends: 2097 [2018-10-24 16:49:59,371 INFO L226 Difference]: Without dead ends: 1499 [2018-10-24 16:49:59,379 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 [2018-10-24 16:49:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2018-10-24 16:49:59,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1485. [2018-10-24 16:49:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-24 16:49:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2304 transitions. [2018-10-24 16:49:59,527 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2304 transitions. Word has length 53 [2018-10-24 16:49:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:49:59,527 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2304 transitions. [2018-10-24 16:49:59,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:49:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2304 transitions. [2018-10-24 16:49:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 16:49:59,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:49:59,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:49:59,538 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:49:59,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:49:59,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1097278039, now seen corresponding path program 1 times [2018-10-24 16:49:59,538 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:49:59,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:49:59,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:59,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:49:59,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:49:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:49:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:49:59,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:49:59,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:49:59,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:49:59,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:49:59,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:49:59,820 INFO L87 Difference]: Start difference. First operand 1485 states and 2304 transitions. Second operand 4 states. [2018-10-24 16:50:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:50:08,573 INFO L93 Difference]: Finished difference Result 4257 states and 6664 transitions. [2018-10-24 16:50:08,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:50:08,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2018-10-24 16:50:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:50:08,591 INFO L225 Difference]: With dead ends: 4257 [2018-10-24 16:50:08,591 INFO L226 Difference]: Without dead ends: 2774 [2018-10-24 16:50:08,601 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 [2018-10-24 16:50:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2018-10-24 16:50:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774. [2018-10-24 16:50:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2018-10-24 16:50:08,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3714 transitions. [2018-10-24 16:50:08,666 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3714 transitions. Word has length 121 [2018-10-24 16:50:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:50:08,668 INFO L481 AbstractCegarLoop]: Abstraction has 2774 states and 3714 transitions. [2018-10-24 16:50:08,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:50:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3714 transitions. [2018-10-24 16:50:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 16:50:08,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:50:08,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:50:08,672 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:50:08,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:50:08,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1635175306, now seen corresponding path program 1 times [2018-10-24 16:50:08,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:50:08,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:50:08,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:08,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:08,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:50:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:50:09,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:50:09,092 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 [2018-10-24 16:50:09,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:50:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:50:09,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:51:14,196 WARN L179 SmtUtils]: Spent 1.08 m on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2018-10-24 16:51:14,644 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 16:51:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:51:14,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:51:14,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-24 16:51:14,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:51:14,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:51:14,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:51:14,787 INFO L87 Difference]: Start difference. First operand 2774 states and 3714 transitions. Second operand 8 states. [2018-10-24 16:51:15,034 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 16:51:48,961 WARN L179 SmtUtils]: Spent 32.15 s on a formula simplification that was a NOOP. DAG size: 87 [2018-10-24 16:52:30,528 WARN L179 SmtUtils]: Spent 32.15 s on a formula simplification that was a NOOP. DAG size: 96 [2018-10-24 16:53:13,778 WARN L179 SmtUtils]: Spent 32.15 s on a formula simplification that was a NOOP. DAG size: 86 Received shutdown request... [2018-10-24 16:54:04,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 16:54:04,381 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:54:04,387 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:54:04,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:54:04 BoogieIcfgContainer [2018-10-24 16:54:04,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:54:04,389 INFO L168 Benchmark]: Toolchain (without parser) took 268734.41 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: -589.4 MB). Peak memory consumption was 549.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:54:04,390 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. [2018-10-24 16:54:04,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1698.07 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:54:04,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 536.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -921.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:54:04,393 INFO L168 Benchmark]: Boogie Preprocessor took 308.87 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: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:54:04,394 INFO L168 Benchmark]: RCFGBuilder took 10520.22 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: 467.6 MB). Peak memory consumption was 467.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:54:04,395 INFO L168 Benchmark]: TraceAbstraction took 255664.51 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 343.9 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -303.1 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:54:04,402 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 1698.07 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 536.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -921.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 308.87 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: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10520.22 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: 467.6 MB). Peak memory consumption was 467.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 255664.51 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 343.9 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -303.1 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 164). Cancelled while BasicCegarLoop was constructing difference of abstraction (2774states) and FLOYD_HOARE automaton (currently 13 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (7325 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 255.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 188.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1174 SDtfs, 5229 SDslu, 798 SDs, 0 SdLazy, 8992 SolverSat, 2499 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 88.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 162.3s 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, 66.3s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 418 ConstructedInterpolants, 6 QuantifiedInterpolants, 418936 SizeOfPredicates, 5 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 55/150 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown