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/toy/LockingExampleArray.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:43:23,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:43:23,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:43:23,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:43:23,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:43:23,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:43:23,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:43:23,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:43:23,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:43:23,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:43:23,336 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:43:23,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:43:23,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:43:23,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:43:23,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:43:23,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:43:23,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:43:23,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:43:23,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:43:23,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:43:23,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:43:23,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:43:23,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:43:23,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:43:23,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:43:23,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:43:23,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:43:23,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:43:23,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:43:23,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:43:23,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:43:23,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:43:23,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:43:23,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:43:23,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:43:23,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:43:23,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:43:23,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:43:23,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:43:23,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:43:23,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:43:23,390 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:43:23,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:43:23,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:43:23,407 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:43:23,408 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:43:23,409 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/LockingExampleArray.bpl [2019-08-05 10:43:23,409 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/LockingExampleArray.bpl' [2019-08-05 10:43:23,444 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:43:23,446 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:43:23,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:43:23,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:43:23,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:43:23,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/1) ... [2019-08-05 10:43:23,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/1) ... [2019-08-05 10:43:23,478 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:43:23,479 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:43:23,479 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:43:23,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:43:23,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:43:23,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:43:23,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:43:23,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/1) ... [2019-08-05 10:43:23,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/1) ... [2019-08-05 10:43:23,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/1) ... [2019-08-05 10:43:23,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/1) ... [2019-08-05 10:43:23,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/1) ... [2019-08-05 10:43:23,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/1) ... [2019-08-05 10:43:23,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/1) ... [2019-08-05 10:43:23,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:43:23,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:43:23,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:43:23,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:43:23,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (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 10:43:23,574 INFO L124 BoogieDeclarations]: Specification and implementation of procedure lockingEx given in one single declaration [2019-08-05 10:43:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure lockingEx [2019-08-05 10:43:23,575 INFO L138 BoogieDeclarations]: Found implementation of procedure lockingEx [2019-08-05 10:43:23,898 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:43:23,899 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:43:23,900 INFO L202 PluginConnector]: Adding new model LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:43:23 BoogieIcfgContainer [2019-08-05 10:43:23,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:43:23,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:43:23,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:43:23,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:43:23,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:43:23" (1/2) ... [2019-08-05 10:43:23,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dcb1024 and model type LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:43:23, skipping insertion in model container [2019-08-05 10:43:23,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:43:23" (2/2) ... [2019-08-05 10:43:23,909 INFO L109 eAbstractionObserver]: Analyzing ICFG LockingExampleArray.bpl [2019-08-05 10:43:23,919 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:43:23,931 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:43:23,949 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:43:23,977 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:43:23,978 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:43:23,978 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:43:23,978 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:43:23,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:43:23,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:43:23,978 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:43:23,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:43:23,979 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:43:23,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:43:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 10:43:23,999 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:43:24,000 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 10:43:24,005 INFO L418 AbstractCegarLoop]: === Iteration 1 === [lockingExErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:43:24,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:43:24,012 INFO L82 PathProgramCache]: Analyzing trace with hash 965, now seen corresponding path program 1 times [2019-08-05 10:43:24,063 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:43:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:43:24,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:43:24,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:43:24,204 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-08-05 10:43:24,204 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 10:43:24,226 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:43:24,227 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-08-05 10:43:24,227 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-08-05 10:43:24,256 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 10:43:24,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:43:24,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:43:24,262 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:43:24,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:43:24,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:43:24,276 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-08-05 10:43:24,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:43:24,358 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 10:43:24,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:43:24,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 10:43:24,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:43:24,373 INFO L225 Difference]: With dead ends: 7 [2019-08-05 10:43:24,373 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 10:43:24,377 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:43:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 10:43:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 10:43:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 10:43:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 10:43:24,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 2 [2019-08-05 10:43:24,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:43:24,427 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 10:43:24,427 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:43:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 10:43:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:43:24,428 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:43:24,428 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:43:24,428 INFO L418 AbstractCegarLoop]: === Iteration 2 === [lockingExErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:43:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:43:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash 943179, now seen corresponding path program 1 times [2019-08-05 10:43:24,430 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:43:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:43:24,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 10:43:24,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:43:24,534 INFO L392 ElimStorePlain]: Different costs {3=[v_lockingEx_a_19], 7=[v_prenex_1]} [2019-08-05 10:43:24,542 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 10:43:24,618 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:43:24,619 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 38 [2019-08-05 10:43:24,621 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-08-05 10:43:24,825 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2019-08-05 10:43:24,826 INFO L567 ElimStorePlain]: treesize reduction 12, result has 85.9 percent of original size [2019-08-05 10:43:24,861 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 10:43:24,866 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-08-05 10:43:25,069 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-08-05 10:43:25,070 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 40 [2019-08-05 10:43:25,071 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-08-05 10:43:25,176 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2019-08-05 10:43:25,177 INFO L567 ElimStorePlain]: treesize reduction 14, result has 77.8 percent of original size [2019-08-05 10:43:25,177 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-08-05 10:43:25,178 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:49 [2019-08-05 10:43:25,370 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-08-05 10:43:25,373 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:43:25,374 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:43:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:43:25,486 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:43:25,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:43:25,488 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:43:25,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:43:25,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:43:25,489 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2019-08-05 10:43:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:43:37,700 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2019-08-05 10:43:37,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:43:37,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-08-05 10:43:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:43:37,701 INFO L225 Difference]: With dead ends: 4 [2019-08-05 10:43:37,701 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:43:37,702 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:43:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:43:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:43:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:43:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:43:37,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2019-08-05 10:43:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:43:37,705 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:43:37,705 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:43:37,705 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:43:37,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:43:37,712 INFO L202 PluginConnector]: Adding new model LockingExampleArray.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:43:37 BoogieIcfgContainer [2019-08-05 10:43:37,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:43:37,716 INFO L168 Benchmark]: Toolchain (without parser) took 14270.26 ms. Allocated memory was 139.5 MB in the beginning and 178.3 MB in the end (delta: 38.8 MB). Free memory was 109.1 MB in the beginning and 122.7 MB in the end (delta: -13.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:43:37,718 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 110.3 MB in the beginning and 110.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:43:37,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.49 ms. Allocated memory is still 139.5 MB. Free memory was 109.1 MB in the beginning and 107.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:43:37,720 INFO L168 Benchmark]: Boogie Preprocessor took 21.09 ms. Allocated memory is still 139.5 MB. Free memory was 107.2 MB in the beginning and 106.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:43:37,723 INFO L168 Benchmark]: RCFGBuilder took 396.99 ms. Allocated memory is still 139.5 MB. Free memory was 105.9 MB in the beginning and 95.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:43:37,724 INFO L168 Benchmark]: TraceAbstraction took 13812.64 ms. Allocated memory was 139.5 MB in the beginning and 178.3 MB in the end (delta: 38.8 MB). Free memory was 95.3 MB in the beginning and 122.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:43:37,730 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 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 110.3 MB in the beginning and 110.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.49 ms. Allocated memory is still 139.5 MB. Free memory was 109.1 MB in the beginning and 107.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.09 ms. Allocated memory is still 139.5 MB. Free memory was 107.2 MB in the beginning and 106.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.99 ms. Allocated memory is still 139.5 MB. Free memory was 105.9 MB in the beginning and 95.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13812.64 ms. Allocated memory was 139.5 MB in the beginning and 178.3 MB in the end (delta: 38.8 MB). Free memory was 95.3 MB in the beginning and 122.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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, 6 locations, 1 error locations. SAFE Result, 13.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 12.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 1 QuantifiedInterpolants, 239 SizeOfPredicates, 2 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...