java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/abstractInterpretation/regression/open/eq/44a_join_strong_and_weak_equivalence.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:10:05,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:10:05,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:10:05,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:10:05,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:10:05,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:10:05,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:10:05,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:10:05,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:10:05,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:10:05,298 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:10:05,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:10:05,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:10:05,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:10:05,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:10:05,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:10:05,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:10:05,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:10:05,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:10:05,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:10:05,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:10:05,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:10:05,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:10:05,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:10:05,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:10:05,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:10:05,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:10:05,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:10:05,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:10:05,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:10:05,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:10:05,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:10:05,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:10:05,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:10:05,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:10:05,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:10:05,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:10:05,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:10:05,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:10:05,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:10:05,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:10:05,368 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:10:05,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:10:05,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:10:05,395 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:10:05,396 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:10:05,398 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/open/eq/44a_join_strong_and_weak_equivalence.bpl [2019-08-05 11:10:05,399 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/open/eq/44a_join_strong_and_weak_equivalence.bpl' [2019-08-05 11:10:05,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:10:05,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:10:05,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:10:05,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:10:05,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:10:05,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... [2019-08-05 11:10:05,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... [2019-08-05 11:10:05,478 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:10:05,479 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:10:05,479 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:10:05,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:10:05,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:10:05,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:10:05,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:10:05,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... [2019-08-05 11:10:05,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... [2019-08-05 11:10:05,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... [2019-08-05 11:10:05,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... [2019-08-05 11:10:05,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... [2019-08-05 11:10:05,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... [2019-08-05 11:10:05,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... [2019-08-05 11:10:05,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:10:05,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:10:05,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:10:05,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:10:05,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 11:10:05,583 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 11:10:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 11:10:05,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 11:10:05,800 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:10:05,800 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:10:05,802 INFO L202 PluginConnector]: Adding new model 44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:10:05 BoogieIcfgContainer [2019-08-05 11:10:05,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:10:05,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:10:05,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:10:05,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:10:05,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:10:05" (1/2) ... [2019-08-05 11:10:05,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3846ab9f and model type 44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:10:05, skipping insertion in model container [2019-08-05 11:10:05,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:10:05" (2/2) ... [2019-08-05 11:10:05,811 INFO L109 eAbstractionObserver]: Analyzing ICFG 44a_join_strong_and_weak_equivalence.bpl [2019-08-05 11:10:05,822 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:10:05,831 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 11:10:05,848 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 11:10:05,872 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:10:05,873 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:10:05,873 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:10:05,873 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:10:05,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:10:05,874 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:10:05,874 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:10:05,874 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:10:05,874 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:10:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2019-08-05 11:10:05,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:10:05,897 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:10:05,897 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:10:05,900 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:10:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:10:05,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1277, now seen corresponding path program 1 times [2019-08-05 11:10:05,953 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:10:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:10:05,987 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 11:10:05,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:10:18,133 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((main_x Int) (main_i Int)) (and (= c_main_a (store c_main_b main_i main_x)) (not (= c_main_j main_i)))) (= c_main_b c_main_a)) is different from true [2019-08-05 11:10:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:10:18,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:10:18,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:10:18,141 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:10:18,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:10:18,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=2, Unknown=1, NotChecked=0, Total=6 [2019-08-05 11:10:18,160 INFO L87 Difference]: Start difference. First operand 4 states. Second operand 3 states. [2019-08-05 11:10:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:10:18,176 INFO L93 Difference]: Finished difference Result 3 states and 2 transitions. [2019-08-05 11:10:18,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:10:18,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:10:18,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:10:18,186 INFO L225 Difference]: With dead ends: 3 [2019-08-05 11:10:18,186 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:10:18,189 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=3, Invalid=2, Unknown=1, NotChecked=0, Total=6 [2019-08-05 11:10:18,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:10:18,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:10:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:10:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:10:18,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2019-08-05 11:10:18,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:10:18,214 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:10:18,214 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:10:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:10:18,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:10:18,219 INFO L202 PluginConnector]: Adding new model 44a_join_strong_and_weak_equivalence.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:10:18 BoogieIcfgContainer [2019-08-05 11:10:18,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:10:18,222 INFO L168 Benchmark]: Toolchain (without parser) took 12784.17 ms. Allocated memory is still 141.6 MB. Free memory was 109.9 MB in the beginning and 78.7 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:10:18,223 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory is still 110.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 11:10:18,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.22 ms. Allocated memory is still 141.6 MB. Free memory was 109.9 MB in the beginning and 107.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:10:18,226 INFO L168 Benchmark]: Boogie Preprocessor took 21.75 ms. Allocated memory is still 141.6 MB. Free memory was 107.8 MB in the beginning and 107.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 7.1 GB. [2019-08-05 11:10:18,227 INFO L168 Benchmark]: RCFGBuilder took 298.25 ms. Allocated memory is still 141.6 MB. Free memory was 106.6 MB in the beginning and 97.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-08-05 11:10:18,228 INFO L168 Benchmark]: TraceAbstraction took 12416.27 ms. Allocated memory is still 141.6 MB. Free memory was 97.2 MB in the beginning and 78.7 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2019-08-05 11:10:18,233 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory is still 110.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.22 ms. Allocated memory is still 141.6 MB. Free memory was 109.9 MB in the beginning and 107.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.75 ms. Allocated memory is still 141.6 MB. Free memory was 107.8 MB in the beginning and 107.0 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 7.1 GB. * RCFGBuilder took 298.25 ms. Allocated memory is still 141.6 MB. Free memory was 106.6 MB in the beginning and 97.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12416.27 ms. Allocated memory is still 141.6 MB. Free memory was 97.2 MB in the beginning and 78.7 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 1 error locations. SAFE Result, 12.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 1 QuantifiedInterpolants, 16 SizeOfPredicates, 2 NumberOfNonLiveVariables, 4 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...