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_label53_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:33:35,398 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:33:35,401 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:33:35,412 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:33:35,413 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:33:35,414 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:33:35,415 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:33:35,417 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:33:35,419 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:33:35,420 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:33:35,421 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:33:35,422 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:33:35,423 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:33:35,424 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:33:35,425 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:33:35,426 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:33:35,427 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:33:35,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:33:35,431 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:33:35,433 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:33:35,434 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:33:35,435 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:33:35,438 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:33:35,438 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:33:35,439 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:33:35,440 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:33:35,441 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:33:35,442 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:33:35,443 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:33:35,444 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:33:35,445 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:33:35,445 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:33:35,449 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 14:33:35,465 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:33:35,465 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:33:35,466 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:33:35,466 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:33:35,469 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:33:35,470 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:33:35,470 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:33:35,470 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:33:35,470 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:33:35,471 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:33:35,471 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:33:35,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:33:35,471 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:33:35,471 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:33:35,472 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:33:35,472 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:33:35,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:33:35,472 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:33:35,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:33:35,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:33:35,473 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:33:35,473 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:33:35,473 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:33:35,474 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:33:35,474 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:33:35,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:33:35,474 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:33:35,474 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:33:35,517 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:33:35,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:33:35,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:33:35,538 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:33:35,538 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:33:35,539 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label53_false-unreach-call.c [2018-10-24 14:33:35,598 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea732e9aa/44a0e84736d142569719552be933994a/FLAG52a437ae3 [2018-10-24 14:33:36,275 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:33:36,276 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label53_false-unreach-call.c [2018-10-24 14:33:36,303 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea732e9aa/44a0e84736d142569719552be933994a/FLAG52a437ae3 [2018-10-24 14:33:36,322 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea732e9aa/44a0e84736d142569719552be933994a [2018-10-24 14:33:36,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:33:36,337 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:33:36,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:33:36,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:33:36,344 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:33:36,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:33:36" (1/1) ... [2018-10-24 14:33:36,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96182d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:36, skipping insertion in model container [2018-10-24 14:33:36,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:33:36" (1/1) ... [2018-10-24 14:33:36,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:33:36,501 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:33:37,651 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:33:37,656 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:33:38,056 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:33:38,082 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:33:38,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38 WrapperNode [2018-10-24 14:33:38,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:33:38,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:33:38,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:33:38,085 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:33:38,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (1/1) ... [2018-10-24 14:33:38,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (1/1) ... [2018-10-24 14:33:38,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:33:38,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:33:38,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:33:38,633 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:33:38,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (1/1) ... [2018-10-24 14:33:38,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (1/1) ... [2018-10-24 14:33:38,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (1/1) ... [2018-10-24 14:33:38,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (1/1) ... [2018-10-24 14:33:38,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (1/1) ... [2018-10-24 14:33:38,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (1/1) ... [2018-10-24 14:33:38,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (1/1) ... [2018-10-24 14:33:38,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:33:38,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:33:38,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:33:38,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:33:38,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (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 14:33:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:33:38,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:33:38,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:33:48,303 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:33:48,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:33:48 BoogieIcfgContainer [2018-10-24 14:33:48,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:33:48,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:33:48,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:33:48,309 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:33:48,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:33:36" (1/3) ... [2018-10-24 14:33:48,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9a4e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:33:48, skipping insertion in model container [2018-10-24 14:33:48,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:33:38" (2/3) ... [2018-10-24 14:33:48,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9a4e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:33:48, skipping insertion in model container [2018-10-24 14:33:48,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:33:48" (3/3) ... [2018-10-24 14:33:48,314 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label53_false-unreach-call.c [2018-10-24 14:33:48,324 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:33:48,333 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:33:48,352 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:33:48,395 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:33:48,396 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:33:48,396 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:33:48,397 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:33:48,397 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:33:48,397 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:33:48,397 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:33:48,397 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:33:48,397 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:33:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 14:33:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-24 14:33:48,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:33:48,450 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:33:48,453 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:33:48,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:33:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1961166346, now seen corresponding path program 1 times [2018-10-24 14:33:48,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:33:48,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:33:48,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:33:48,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:33:48,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:33:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:33:48,852 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 14:33:48,859 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 14:33:48,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:33:48,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:33:48,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:33:48,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:33:48,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:33:48,889 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 14:34:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:34:04,061 INFO L93 Difference]: Finished difference Result 2097 states and 3909 transitions. [2018-10-24 14:34:04,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:34:04,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-24 14:34:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:34:04,099 INFO L225 Difference]: With dead ends: 2097 [2018-10-24 14:34:04,099 INFO L226 Difference]: Without dead ends: 1499 [2018-10-24 14:34:04,107 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 [2018-10-24 14:34:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2018-10-24 14:34:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1485. [2018-10-24 14:34:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-24 14:34:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2304 transitions. [2018-10-24 14:34:04,233 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2304 transitions. Word has length 15 [2018-10-24 14:34:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:34:04,233 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2304 transitions. [2018-10-24 14:34:04,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:34:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2304 transitions. [2018-10-24 14:34:04,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-24 14:34:04,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:34:04,237 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:34:04,238 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:34:04,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:34:04,238 INFO L82 PathProgramCache]: Analyzing trace with hash 89819569, now seen corresponding path program 1 times [2018-10-24 14:34:04,238 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:34:04,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:34:04,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:04,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:34:04,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:34:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:34:04,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:34:04,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:34:04,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:34:04,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:34:04,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:34:04,581 INFO L87 Difference]: Start difference. First operand 1485 states and 2304 transitions. Second operand 4 states. [2018-10-24 14:34:12,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:34:12,514 INFO L93 Difference]: Finished difference Result 4257 states and 6664 transitions. [2018-10-24 14:34:12,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:34:12,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2018-10-24 14:34:12,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:34:12,530 INFO L225 Difference]: With dead ends: 4257 [2018-10-24 14:34:12,530 INFO L226 Difference]: Without dead ends: 2774 [2018-10-24 14:34:12,533 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 14:34:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2018-10-24 14:34:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774. [2018-10-24 14:34:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2018-10-24 14:34:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3714 transitions. [2018-10-24 14:34:12,589 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3714 transitions. Word has length 83 [2018-10-24 14:34:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:34:12,589 INFO L481 AbstractCegarLoop]: Abstraction has 2774 states and 3714 transitions. [2018-10-24 14:34:12,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:34:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3714 transitions. [2018-10-24 14:34:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 14:34:12,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:34:12,593 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:34:12,593 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:34:12,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:34:12,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2018689406, now seen corresponding path program 1 times [2018-10-24 14:34:12,594 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:34:12,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:34:12,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:12,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:34:12,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:34:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:34:13,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:34:13,117 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 14:34:13,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:34:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:34:13,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:34:29,866 WARN L179 SmtUtils]: Spent 16.27 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-24 14:34:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:34:30,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:34:30,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:34:30,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:34:30,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:34:30,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:34:30,077 INFO L87 Difference]: Start difference. First operand 2774 states and 3714 transitions. Second operand 7 states. [2018-10-24 14:34:39,023 WARN L179 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 14:34:49,458 WARN L179 SmtUtils]: Spent 8.04 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-24 14:38:06,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:38:06,306 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:38:06,313 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:38:06,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:38:06 BoogieIcfgContainer [2018-10-24 14:38:06,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:38:06,314 INFO L168 Benchmark]: Toolchain (without parser) took 269979.45 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.7 MB). Peak memory consumption was 334.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:06,316 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:38:06,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1743.97 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. [2018-10-24 14:38:06,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 547.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -890.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:06,318 INFO L168 Benchmark]: Boogie Preprocessor took 259.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:06,319 INFO L168 Benchmark]: RCFGBuilder took 9412.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 483.1 MB). Peak memory consumption was 483.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:06,320 INFO L168 Benchmark]: TraceAbstraction took 258007.65 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 341.3 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -528.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:38:06,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1743.97 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 547.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -890.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 259.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9412.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 483.1 MB). Peak memory consumption was 483.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258007.65 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 341.3 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -528.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 50). 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 (7184 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 257.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 239.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1164 SDtfs, 4658 SDslu, 750 SDs, 0 SdLazy, 7839 SolverSat, 2559 SolverUnsat, 92 SolverUnknown, 0 SolverNotchecked, 219.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.4s 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, 17.7s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 266 ConstructedInterpolants, 13 QuantifiedInterpolants, 259180 SizeOfPredicates, 1 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 24/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown