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_label33_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:30:37,386 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:30:37,388 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:30:37,406 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:30:37,407 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:30:37,408 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:30:37,409 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:30:37,411 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:30:37,413 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:30:37,416 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:30:37,417 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:30:37,417 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:30:37,418 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:30:37,419 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:30:37,420 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:30:37,421 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:30:37,422 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:30:37,424 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:30:37,425 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:30:37,427 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:30:37,428 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:30:37,429 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:30:37,432 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:30:37,432 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:30:37,432 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:30:37,433 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:30:37,434 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:30:37,435 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:30:37,436 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:30:37,437 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:30:37,437 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:30:37,438 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:30:37,440 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 14:30:37,460 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:30:37,460 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:30:37,461 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:30:37,461 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:30:37,464 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:30:37,464 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:30:37,464 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:30:37,464 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:30:37,464 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:30:37,466 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:30:37,466 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:30:37,466 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:30:37,466 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:30:37,466 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:30:37,467 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:30:37,467 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:30:37,467 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:30:37,467 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:30:37,467 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:30:37,468 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:30:37,469 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:30:37,469 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:30:37,469 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:30:37,470 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:30:37,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:30:37,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:30:37,470 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:30:37,470 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:30:37,530 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:30:37,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:30:37,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:30:37,554 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:30:37,555 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:30:37,556 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label33_false-unreach-call.c [2018-10-24 14:30:37,619 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/09f911200/9433543845b54cde96c0156325ff1fd3/FLAGf171ebc3b [2018-10-24 14:30:38,351 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:30:38,352 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label33_false-unreach-call.c [2018-10-24 14:30:38,378 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/09f911200/9433543845b54cde96c0156325ff1fd3/FLAGf171ebc3b [2018-10-24 14:30:38,393 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/09f911200/9433543845b54cde96c0156325ff1fd3 [2018-10-24 14:30:38,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:30:38,406 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:30:38,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:30:38,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:30:38,411 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:30:38,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:30:38" (1/1) ... [2018-10-24 14:30:38,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225ecd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:38, skipping insertion in model container [2018-10-24 14:30:38,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:30:38" (1/1) ... [2018-10-24 14:30:38,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:30:38,537 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:30:39,524 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:30:39,529 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:30:39,900 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:30:39,925 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:30:39,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39 WrapperNode [2018-10-24 14:30:39,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:30:39,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:30:39,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:30:39,929 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:30:39,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (1/1) ... [2018-10-24 14:30:40,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (1/1) ... [2018-10-24 14:30:40,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:30:40,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:30:40,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:30:40,565 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:30:40,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (1/1) ... [2018-10-24 14:30:40,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (1/1) ... [2018-10-24 14:30:40,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (1/1) ... [2018-10-24 14:30:40,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (1/1) ... [2018-10-24 14:30:40,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (1/1) ... [2018-10-24 14:30:40,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (1/1) ... [2018-10-24 14:30:40,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (1/1) ... [2018-10-24 14:30:40,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:30:40,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:30:40,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:30:40,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:30:40,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (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 14:30:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:30:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:30:40,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:30:51,970 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:30:51,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:30:51 BoogieIcfgContainer [2018-10-24 14:30:51,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:30:51,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:30:51,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:30:51,976 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:30:51,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:30:38" (1/3) ... [2018-10-24 14:30:51,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41707d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:30:51, skipping insertion in model container [2018-10-24 14:30:51,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:39" (2/3) ... [2018-10-24 14:30:51,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41707d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:30:51, skipping insertion in model container [2018-10-24 14:30:51,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:30:51" (3/3) ... [2018-10-24 14:30:51,981 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label33_false-unreach-call.c [2018-10-24 14:30:51,991 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:30:52,001 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:30:52,020 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:30:52,068 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:30:52,068 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:30:52,069 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:30:52,069 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:30:52,069 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:30:52,069 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:30:52,069 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:30:52,069 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:30:52,070 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:30:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 14:30:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 14:30:52,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:30:52,120 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:30:52,126 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:30:52,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:30:52,133 INFO L82 PathProgramCache]: Analyzing trace with hash -809652462, now seen corresponding path program 1 times [2018-10-24 14:30:52,135 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:30:52,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:30:52,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:52,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:30:52,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:30:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:30:52,488 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 14:30:52,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:30:52,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:30:52,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:30:52,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:30:52,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:30:52,511 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 14:31:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:04,834 INFO L93 Difference]: Finished difference Result 2103 states and 3915 transitions. [2018-10-24 14:31:04,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:31:04,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-24 14:31:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:04,873 INFO L225 Difference]: With dead ends: 2103 [2018-10-24 14:31:04,873 INFO L226 Difference]: Without dead ends: 1505 [2018-10-24 14:31:04,881 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 14:31:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2018-10-24 14:31:05,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1492. [2018-10-24 14:31:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2018-10-24 14:31:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2417 transitions. [2018-10-24 14:31:05,037 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2417 transitions. Word has length 17 [2018-10-24 14:31:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:05,038 INFO L481 AbstractCegarLoop]: Abstraction has 1492 states and 2417 transitions. [2018-10-24 14:31:05,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:31:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2417 transitions. [2018-10-24 14:31:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-24 14:31:05,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:05,043 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:31:05,043 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:05,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:05,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1284866855, now seen corresponding path program 1 times [2018-10-24 14:31:05,044 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:05,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:05,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:05,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:05,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:05,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:31:05,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:31:05,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:31:05,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:31:05,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:31:05,324 INFO L87 Difference]: Start difference. First operand 1492 states and 2417 transitions. Second operand 4 states. [2018-10-24 14:31:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:31:14,979 INFO L93 Difference]: Finished difference Result 4270 states and 6995 transitions. [2018-10-24 14:31:14,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:31:14,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2018-10-24 14:31:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:31:14,995 INFO L225 Difference]: With dead ends: 4270 [2018-10-24 14:31:14,996 INFO L226 Difference]: Without dead ends: 2780 [2018-10-24 14:31:15,003 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 14:31:15,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2018-10-24 14:31:15,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2780. [2018-10-24 14:31:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2780 states. [2018-10-24 14:31:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3842 transitions. [2018-10-24 14:31:15,060 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3842 transitions. Word has length 85 [2018-10-24 14:31:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:31:15,061 INFO L481 AbstractCegarLoop]: Abstraction has 2780 states and 3842 transitions. [2018-10-24 14:31:15,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:31:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3842 transitions. [2018-10-24 14:31:15,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 14:31:15,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:31:15,069 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:31:15,070 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:31:15,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:31:15,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1619736998, now seen corresponding path program 1 times [2018-10-24 14:31:15,070 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:31:15,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:31:15,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:15,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:15,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:31:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:15,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:31:15,306 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 14:31:15,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:31:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:31:15,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:31:31,885 WARN L179 SmtUtils]: Spent 16.23 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-24 14:31:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:31:32,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:31:32,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:31:32,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:31:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:31:32,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:31:32,098 INFO L87 Difference]: Start difference. First operand 2780 states and 3842 transitions. Second operand 7 states. [2018-10-24 14:31:32,302 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 14:31:42,315 WARN L179 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 14:31:51,904 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-24 14:35:09,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:35:09,702 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:35:09,708 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:35:09,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:35:09 BoogieIcfgContainer [2018-10-24 14:35:09,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:35:09,709 INFO L168 Benchmark]: Toolchain (without parser) took 271304.17 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 2.3 GB in the end (delta: -866.3 MB). Peak memory consumption was 220.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:35:09,710 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:35:09,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1520.81 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 14:35:09,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 636.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -930.6 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:35:09,713 INFO L168 Benchmark]: Boogie Preprocessor took 327.20 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: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:35:09,714 INFO L168 Benchmark]: RCFGBuilder took 11079.30 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: 474.8 MB). Peak memory consumption was 474.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:35:09,715 INFO L168 Benchmark]: TraceAbstraction took 257735.41 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 289.9 MB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -592.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:35:09,720 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1520.81 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 636.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -930.6 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 327.20 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: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11079.30 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: 474.8 MB). Peak memory consumption was 474.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257735.41 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 289.9 MB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -592.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 56). Cancelled while BasicCegarLoop was constructing difference of abstraction (2780states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (7136 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 257.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 239.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1214 SDtfs, 3897 SDslu, 818 SDs, 0 SdLazy, 8660 SolverSat, 2154 SolverUnsat, 93 SolverUnknown, 0 SolverNotchecked, 219.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2780occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 278 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 274 ConstructedInterpolants, 15 QuantifiedInterpolants, 294094 SizeOfPredicates, 1 NumberOfNonLiveVariables, 151 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 28/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown