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/recursive/regression/bpl/lockingExample-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:07:44,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:07:44,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:07:44,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:07:44,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:07:44,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:07:44,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:07:44,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:07:44,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:07:44,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:07:44,904 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:07:44,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:07:44,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:07:44,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:07:44,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:07:44,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:07:44,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:07:44,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:07:44,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:07:44,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:07:44,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:07:44,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:07:44,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:07:44,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:07:44,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 11:07:44,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:07:44,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:07:44,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:07:44,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:07:44,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:07:44,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:07:44,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:07:44,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:07:44,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:07:44,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:07:44,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:07:44,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:07:45,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:07:45,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:07:45,021 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:07:45,022 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:07:45,023 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/recursive/regression/bpl/lockingExample-incorrect.bpl [2019-08-05 11:07:45,023 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/recursive/regression/bpl/lockingExample-incorrect.bpl' [2019-08-05 11:07:45,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:07:45,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:07:45,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:07:45,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:07:45,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:07:45,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/1) ... [2019-08-05 11:07:45,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/1) ... [2019-08-05 11:07:45,100 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:07:45,101 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:07:45,101 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:07:45,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:07:45,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:07:45,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:07:45,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:07:45,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/1) ... [2019-08-05 11:07:45,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/1) ... [2019-08-05 11:07:45,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/1) ... [2019-08-05 11:07:45,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/1) ... [2019-08-05 11:07:45,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/1) ... [2019-08-05 11:07:45,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/1) ... [2019-08-05 11:07:45,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/1) ... [2019-08-05 11:07:45,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:07:45,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:07:45,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:07:45,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:07:45,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (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 11:07:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure unlock [2019-08-05 11:07:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock [2019-08-05 11:07:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure lock [2019-08-05 11:07:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure lock [2019-08-05 11:07:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure Main [2019-08-05 11:07:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure Main [2019-08-05 11:07:45,275 WARN L731 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-08-05 11:07:45,319 WARN L731 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-08-05 11:07:45,356 WARN L731 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-08-05 11:07:45,696 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:07:45,696 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-08-05 11:07:45,697 INFO L202 PluginConnector]: Adding new model lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:07:45 BoogieIcfgContainer [2019-08-05 11:07:45,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:07:45,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:07:45,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:07:45,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:07:45,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:07:45" (1/2) ... [2019-08-05 11:07:45,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73041d3c and model type lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:07:45, skipping insertion in model container [2019-08-05 11:07:45,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:07:45" (2/2) ... [2019-08-05 11:07:45,705 INFO L109 eAbstractionObserver]: Analyzing ICFG lockingExample-incorrect.bpl [2019-08-05 11:07:45,714 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:07:45,722 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-08-05 11:07:45,738 INFO L252 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-08-05 11:07:45,764 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:07:45,765 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:07:45,765 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:07:45,765 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:07:45,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:07:45,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:07:45,766 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:07:45,766 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:07:45,766 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:07:45,776 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-08-05 11:07:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:07:45,786 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:07:45,787 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:07:45,789 INFO L418 AbstractCegarLoop]: === Iteration 1 === [MainErr1ASSERT_VIOLATIONPRE_CONDITIONandASSERT, MainErr0ASSERT_VIOLATIONPRE_CONDITIONandASSERT, MainErr2ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:07:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:07:45,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2119, now seen corresponding path program 1 times [2019-08-05 11:07:45,840 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:07:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:07:45,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:07:45,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:07:45,926 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 11:07:45,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:07:45,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:07:45,934 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:07:45,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:07:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:07:45,950 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-08-05 11:07:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:07:46,052 INFO L93 Difference]: Finished difference Result 15 states and 13 transitions. [2019-08-05 11:07:46,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:07:46,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 11:07:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:07:46,066 INFO L225 Difference]: With dead ends: 15 [2019-08-05 11:07:46,066 INFO L226 Difference]: Without dead ends: 9 [2019-08-05 11:07:46,068 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 11:07:46,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-08-05 11:07:46,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-08-05 11:07:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 11:07:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-05 11:07:46,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 2 [2019-08-05 11:07:46,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:07:46,099 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-05 11:07:46,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:07:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-05 11:07:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:07:46,100 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:07:46,101 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:07:46,101 INFO L418 AbstractCegarLoop]: === Iteration 2 === [MainErr1ASSERT_VIOLATIONPRE_CONDITIONandASSERT, MainErr0ASSERT_VIOLATIONPRE_CONDITIONandASSERT, MainErr2ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:07:46,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:07:46,101 INFO L82 PathProgramCache]: Analyzing trace with hash 66481, now seen corresponding path program 1 times [2019-08-05 11:07:46,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:07:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:07:46,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:07:46,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:07:46,128 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 11:07:46,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:07:46,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:07:46,130 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:07:46,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:07:46,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:07:46,131 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2019-08-05 11:07:46,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:07:46,162 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 11:07:46,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:07:46,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 11:07:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:07:46,163 INFO L225 Difference]: With dead ends: 8 [2019-08-05 11:07:46,163 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 11:07:46,164 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:07:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 11:07:46,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-08-05 11:07:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-08-05 11:07:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-08-05 11:07:46,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2019-08-05 11:07:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:07:46,167 INFO L475 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-08-05 11:07:46,167 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:07:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-08-05 11:07:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 11:07:46,168 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:07:46,168 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 11:07:46,168 INFO L418 AbstractCegarLoop]: === Iteration 3 === [MainErr1ASSERT_VIOLATIONPRE_CONDITIONandASSERT, MainErr0ASSERT_VIOLATIONPRE_CONDITIONandASSERT, MainErr2ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:07:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:07:46,169 INFO L82 PathProgramCache]: Analyzing trace with hash 63911113, now seen corresponding path program 1 times [2019-08-05 11:07:46,170 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:07:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 11:07:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 11:07:46,208 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 11:07:46,225 INFO L202 PluginConnector]: Adding new model lockingExample-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:07:46 BoogieIcfgContainer [2019-08-05 11:07:46,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:07:46,228 INFO L168 Benchmark]: Toolchain (without parser) took 1162.66 ms. Allocated memory is still 139.5 MB. Free memory was 109.1 MB in the beginning and 67.2 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:46,229 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 11:07:46,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 139.5 MB. Free memory was 109.1 MB in the beginning and 106.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:46,232 INFO L168 Benchmark]: Boogie Preprocessor took 24.02 ms. Allocated memory is still 139.5 MB. Free memory was 106.8 MB in the beginning and 105.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:46,233 INFO L168 Benchmark]: RCFGBuilder took 556.09 ms. Allocated memory is still 139.5 MB. Free memory was 105.6 MB in the beginning and 92.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:46,234 INFO L168 Benchmark]: TraceAbstraction took 526.55 ms. Allocated memory is still 139.5 MB. Free memory was 92.5 MB in the beginning and 67.2 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:07:46,239 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 0.21 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 139.5 MB. Free memory was 109.1 MB in the beginning and 106.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.02 ms. Allocated memory is still 139.5 MB. Free memory was 106.8 MB in the beginning and 105.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 556.09 ms. Allocated memory is still 139.5 MB. Free memory was 105.6 MB in the beginning and 92.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 526.55 ms. Allocated memory is still 139.5 MB. Free memory was 92.5 MB in the beginning and 67.2 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L17-L19] requires lock == 0; [L26] counter := 0; VAL [counter=0, lock=0] [L44-L46] requires lock == 0; [L49] lock := 1; [L30] auld := new; VAL [counter=0, lock=1] [L35] COND TRUE new == auld VAL [counter=0, lock=1] [L36] assert counter != 0 || lock == 0; VAL [counter=0, lock=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 3 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...