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/concurrent/concurrentBoogie/ForkInForkedProcedure01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 09:52:11,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 09:52:11,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 09:52:11,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 09:52:11,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 09:52:11,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 09:52:11,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 09:52:11,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 09:52:11,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 09:52:11,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 09:52:11,737 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 09:52:11,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 09:52:11,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 09:52:11,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 09:52:11,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 09:52:11,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 09:52:11,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 09:52:11,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 09:52:11,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 09:52:11,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 09:52:11,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 09:52:11,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 09:52:11,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 09:52:11,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 09:52:11,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 09:52:11,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 09:52:11,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 09:52:11,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 09:52:11,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 09:52:11,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 09:52:11,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 09:52:11,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 09:52:11,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 09:52:11,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 09:52:11,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 09:52:11,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 09:52:11,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 09:52:11,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 09:52:11,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 09:52:11,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 09:52:11,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 09:52:11,810 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 09:52:11,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 09:52:11,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 09:52:11,831 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 09:52:11,831 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 09:52:11,832 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/concurrentBoogie/ForkInForkedProcedure01.bpl [2019-08-05 09:52:11,832 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/concurrentBoogie/ForkInForkedProcedure01.bpl' [2019-08-05 09:52:11,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 09:52:11,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 09:52:11,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:11,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 09:52:11,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 09:52:11,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/1) ... [2019-08-05 09:52:11,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/1) ... [2019-08-05 09:52:11,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:11,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 09:52:11,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 09:52:11,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 09:52:11,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/1) ... [2019-08-05 09:52:11,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/1) ... [2019-08-05 09:52:11,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/1) ... [2019-08-05 09:52:11,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/1) ... [2019-08-05 09:52:11,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/1) ... [2019-08-05 09:52:11,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/1) ... [2019-08-05 09:52:11,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/1) ... [2019-08-05 09:52:11,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 09:52:11,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 09:52:11,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 09:52:11,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 09:52:11,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (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 09:52:12,006 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2019-08-05 09:52:12,006 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2019-08-05 09:52:12,006 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2019-08-05 09:52:12,007 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2019-08-05 09:52:12,007 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-08-05 09:52:12,007 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-08-05 09:52:12,008 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 09:52:12,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 09:52:12,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 09:52:12,009 WARN L201 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-08-05 09:52:12,297 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 09:52:12,297 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 09:52:12,299 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:12 BoogieIcfgContainer [2019-08-05 09:52:12,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 09:52:12,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 09:52:12,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 09:52:12,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 09:52:12,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:11" (1/2) ... [2019-08-05 09:52:12,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52959f87 and model type ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 09:52:12, skipping insertion in model container [2019-08-05 09:52:12,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:12" (2/2) ... [2019-08-05 09:52:12,309 INFO L109 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure01.bpl [2019-08-05 09:52:12,339 WARN L317 ript$VariableManager]: TermVariabe Thread0_bar_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-08-05 09:52:12,407 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 09:52:12,420 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 09:52:12,472 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 09:52:12,524 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 09:52:12,525 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 09:52:12,525 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 09:52:12,525 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 09:52:12,526 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 09:52:12,526 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 09:52:12,526 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 09:52:12,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 09:52:12,526 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 09:52:12,535 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15places, 14 transitions [2019-08-05 09:52:12,547 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 37 states. [2019-08-05 09:52:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-08-05 09:52:12,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 09:52:12,558 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:12,559 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:12,562 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:12,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1637367149, now seen corresponding path program 1 times [2019-08-05 09:52:12,619 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:12,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 09:52:12,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:12,731 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 09:52:12,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:12,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 09:52:12,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 09:52:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 09:52:12,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 09:52:12,752 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2019-08-05 09:52:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:12,787 INFO L93 Difference]: Finished difference Result 40 states and 61 transitions. [2019-08-05 09:52:12,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 09:52:12,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-08-05 09:52:12,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:12,802 INFO L225 Difference]: With dead ends: 40 [2019-08-05 09:52:12,802 INFO L226 Difference]: Without dead ends: 24 [2019-08-05 09:52:12,804 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 09:52:12,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-08-05 09:52:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-08-05 09:52:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-08-05 09:52:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2019-08-05 09:52:12,843 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 8 [2019-08-05 09:52:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:12,844 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2019-08-05 09:52:12,844 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 09:52:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2019-08-05 09:52:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 09:52:12,845 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:12,845 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:12,846 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:12,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:12,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1637459436, now seen corresponding path program 1 times [2019-08-05 09:52:12,848 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:12,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 09:52:12,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:12,926 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 09:52:12,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:12,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 09:52:12,928 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 09:52:12,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 09:52:12,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 09:52:12,929 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 3 states. [2019-08-05 09:52:12,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:12,931 INFO L93 Difference]: Finished difference Result 18 states and 27 transitions. [2019-08-05 09:52:12,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 09:52:12,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-08-05 09:52:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:12,932 INFO L225 Difference]: With dead ends: 18 [2019-08-05 09:52:12,932 INFO L226 Difference]: Without dead ends: 18 [2019-08-05 09:52:12,933 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 09:52:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-08-05 09:52:12,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-08-05 09:52:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-08-05 09:52:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2019-08-05 09:52:12,938 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 27 transitions. Word has length 8 [2019-08-05 09:52:12,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:12,939 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 27 transitions. [2019-08-05 09:52:12,939 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 09:52:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2019-08-05 09:52:12,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-08-05 09:52:12,940 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:12,940 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:12,941 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:12,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:12,941 INFO L82 PathProgramCache]: Analyzing trace with hash -781225636, now seen corresponding path program 1 times [2019-08-05 09:52:12,943 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:12,976 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 09:52:12,992 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-08-05 09:52:12,994 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 09:52:12 BasicIcfg [2019-08-05 09:52:12,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 09:52:12,997 INFO L168 Benchmark]: Toolchain (without parser) took 1127.59 ms. Allocated memory is still 140.5 MB. Free memory was 110.1 MB in the beginning and 70.0 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:12,998 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory is still 111.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 09:52:12,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.04 ms. Allocated memory is still 140.5 MB. Free memory was 110.1 MB in the beginning and 108.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:13,000 INFO L168 Benchmark]: Boogie Preprocessor took 19.61 ms. Allocated memory is still 140.5 MB. Free memory was 108.4 MB in the beginning and 107.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:13,001 INFO L168 Benchmark]: RCFGBuilder took 371.71 ms. Allocated memory is still 140.5 MB. Free memory was 107.1 MB in the beginning and 97.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:13,002 INFO L168 Benchmark]: TraceAbstraction took 693.30 ms. Allocated memory is still 140.5 MB. Free memory was 97.4 MB in the beginning and 70.0 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:13,007 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 140.5 MB. Free memory is still 111.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.04 ms. Allocated memory is still 140.5 MB. Free memory was 110.1 MB in the beginning and 108.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.61 ms. Allocated memory is still 140.5 MB. Free memory was 108.4 MB in the beginning and 107.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.71 ms. Allocated memory is still 140.5 MB. Free memory was 107.1 MB in the beginning and 97.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 693.30 ms. Allocated memory is still 140.5 MB. Free memory was 97.4 MB in the beginning and 70.0 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: assertion can be violated assertion can be violated We found a FailurePath: [L17] -1 x := 0; VAL [x=0] [L18] -1 g := 0; VAL [g=0, x=0] [L20] FORK -1 fork 1 foo(x); VAL [g=0, n=0, x=0] [L29] FORK 0 fork 2 bar(n); VAL [g=0, n=0, n=0, x=0] [L36] 1 res := 23; VAL [g=0, n=0, n=0, res=23, x=0] [L21] JOIN 1 join 2; VAL [g=0, n=0, n=0, res=23, x=0] [L30] 0 g := g + 1; VAL [g=1, n=0, n=0, res=23, x=0] [L23] -1 assert g == 0; VAL [g=1, n=0, n=0, res=23, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 9 SDslu, 10 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 1 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 5 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...