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/showcase/PetersonWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 09:52:05,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 09:52:05,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 09:52:05,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 09:52:05,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 09:52:05,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 09:52:05,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 09:52:05,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 09:52:05,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 09:52:05,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 09:52:05,363 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 09:52:05,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 09:52:05,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 09:52:05,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 09:52:05,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 09:52:05,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 09:52:05,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 09:52:05,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 09:52:05,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 09:52:05,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 09:52:05,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 09:52:05,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 09:52:05,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 09:52:05,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 09:52:05,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 09:52:05,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 09:52:05,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 09:52:05,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 09:52:05,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 09:52:05,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 09:52:05,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 09:52:05,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 09:52:05,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 09:52:05,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 09:52:05,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 09:52:05,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 09:52:05,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 09:52:05,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 09:52:05,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 09:52:05,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 09:52:05,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 09:52:05,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 09:52:05,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 09:52:05,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 09:52:05,450 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 09:52:05,451 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 09:52:05,452 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/concurrentBoogie/showcase/PetersonWithBug.bpl [2019-08-05 09:52:05,452 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/concurrentBoogie/showcase/PetersonWithBug.bpl' [2019-08-05 09:52:05,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 09:52:05,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 09:52:05,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:05,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 09:52:05,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 09:52:05,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/1) ... [2019-08-05 09:52:05,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/1) ... [2019-08-05 09:52:05,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:05,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 09:52:05,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 09:52:05,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 09:52:05,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/1) ... [2019-08-05 09:52:05,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/1) ... [2019-08-05 09:52:05,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/1) ... [2019-08-05 09:52:05,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/1) ... [2019-08-05 09:52:05,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/1) ... [2019-08-05 09:52:05,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/1) ... [2019-08-05 09:52:05,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/1) ... [2019-08-05 09:52:05,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 09:52:05,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 09:52:05,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 09:52:05,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 09:52:05,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (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 09:52:05,628 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2019-08-05 09:52:05,629 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2019-08-05 09:52:05,629 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2019-08-05 09:52:05,629 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2019-08-05 09:52:05,629 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2019-08-05 09:52:05,629 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2019-08-05 09:52:05,630 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 09:52:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 09:52:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 09:52:05,633 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 09:52:06,007 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 09:52:06,008 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-08-05 09:52:06,009 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:06 BoogieIcfgContainer [2019-08-05 09:52:06,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 09:52:06,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 09:52:06,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 09:52:06,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 09:52:06,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:05" (1/2) ... [2019-08-05 09:52:06,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ce2f3fb and model type PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 09:52:06, skipping insertion in model container [2019-08-05 09:52:06,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:06" (2/2) ... [2019-08-05 09:52:06,021 INFO L109 eAbstractionObserver]: Analyzing ICFG PetersonWithBug.bpl [2019-08-05 09:52:06,080 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 09:52:06,088 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-08-05 09:52:06,101 INFO L252 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-08-05 09:52:06,126 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 09:52:06,127 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 09:52:06,127 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 09:52:06,127 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 09:52:06,128 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 09:52:06,128 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 09:52:06,128 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 09:52:06,128 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 09:52:06,128 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 09:52:06,136 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25places, 24 transitions [2019-08-05 09:52:06,167 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 212 states. [2019-08-05 09:52:06,170 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2019-08-05 09:52:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 09:52:06,179 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:06,180 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-08-05 09:52:06,183 INFO L418 AbstractCegarLoop]: === Iteration 1 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:06,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:06,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1991888577, now seen corresponding path program 1 times [2019-08-05 09:52:06,237 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:06,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 09:52:06,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:06,328 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 09:52:06,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:06,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 09:52:06,337 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 09:52:06,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 09:52:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 09:52:06,351 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 3 states. [2019-08-05 09:52:06,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:06,470 INFO L93 Difference]: Finished difference Result 159 states and 367 transitions. [2019-08-05 09:52:06,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 09:52:06,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-08-05 09:52:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:06,495 INFO L225 Difference]: With dead ends: 159 [2019-08-05 09:52:06,496 INFO L226 Difference]: Without dead ends: 159 [2019-08-05 09:52:06,498 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 09:52:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-08-05 09:52:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2019-08-05 09:52:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-08-05 09:52:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 357 transitions. [2019-08-05 09:52:06,588 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 357 transitions. Word has length 6 [2019-08-05 09:52:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:06,589 INFO L475 AbstractCegarLoop]: Abstraction has 155 states and 357 transitions. [2019-08-05 09:52:06,589 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 09:52:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 357 transitions. [2019-08-05 09:52:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-08-05 09:52:06,591 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:06,592 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:06,592 INFO L418 AbstractCegarLoop]: === Iteration 2 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:06,593 INFO L82 PathProgramCache]: Analyzing trace with hash -769529369, now seen corresponding path program 1 times [2019-08-05 09:52:06,594 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:06,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 09:52:06,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:06,842 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 09:52:06,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:06,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-08-05 09:52:06,845 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 09:52:06,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 09:52:06,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 09:52:06,846 INFO L87 Difference]: Start difference. First operand 155 states and 357 transitions. Second operand 4 states. [2019-08-05 09:52:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:06,936 INFO L93 Difference]: Finished difference Result 159 states and 357 transitions. [2019-08-05 09:52:06,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 09:52:06,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-08-05 09:52:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:06,939 INFO L225 Difference]: With dead ends: 159 [2019-08-05 09:52:06,940 INFO L226 Difference]: Without dead ends: 159 [2019-08-05 09:52:06,941 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 09:52:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-08-05 09:52:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2019-08-05 09:52:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-08-05 09:52:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 339 transitions. [2019-08-05 09:52:06,970 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 339 transitions. Word has length 12 [2019-08-05 09:52:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:06,971 INFO L475 AbstractCegarLoop]: Abstraction has 151 states and 339 transitions. [2019-08-05 09:52:06,971 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 09:52:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 339 transitions. [2019-08-05 09:52:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-08-05 09:52:06,975 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:06,975 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:06,975 INFO L418 AbstractCegarLoop]: === Iteration 3 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process0Err0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:06,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:06,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1836189287, now seen corresponding path program 2 times [2019-08-05 09:52:06,977 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:07,012 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-08-05 09:52:07,026 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-08-05 09:52:07,028 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 09:52:07 BasicIcfg [2019-08-05 09:52:07,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 09:52:07,032 INFO L168 Benchmark]: Toolchain (without parser) took 1539.54 ms. Allocated memory was 140.5 MB in the beginning and 177.7 MB in the end (delta: 37.2 MB). Free memory was 107.7 MB in the beginning and 144.0 MB in the end (delta: -36.3 MB). Peak memory consumption was 947.6 kB. Max. memory is 7.1 GB. [2019-08-05 09:52:07,032 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory is still 108.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 09:52:07,033 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.73 ms. Allocated memory is still 140.5 MB. Free memory was 107.3 MB in the beginning and 105.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:07,034 INFO L168 Benchmark]: Boogie Preprocessor took 26.70 ms. Allocated memory is still 140.5 MB. Free memory was 105.6 MB in the beginning and 104.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 7.1 GB. [2019-08-05 09:52:07,035 INFO L168 Benchmark]: RCFGBuilder took 453.61 ms. Allocated memory is still 140.5 MB. Free memory was 104.3 MB in the beginning and 93.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:07,036 INFO L168 Benchmark]: TraceAbstraction took 1016.18 ms. Allocated memory was 140.5 MB in the beginning and 177.7 MB in the end (delta: 37.2 MB). Free memory was 93.8 MB in the beginning and 144.0 MB in the end (delta: -50.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 09:52:07,041 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 0.23 ms. Allocated memory is still 140.5 MB. Free memory is still 108.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.73 ms. Allocated memory is still 140.5 MB. Free memory was 107.3 MB in the beginning and 105.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.70 ms. Allocated memory is still 140.5 MB. Free memory was 105.6 MB in the beginning and 104.7 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 7.1 GB. * RCFGBuilder took 453.61 ms. Allocated memory is still 140.5 MB. Free memory was 104.3 MB in the beginning and 93.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1016.18 ms. Allocated memory was 140.5 MB in the beginning and 177.7 MB in the end (delta: 37.2 MB). Free memory was 93.8 MB in the beginning and 144.0 MB in the end (delta: -50.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 40]: assertion can be violated assertion can be violated We found a FailurePath: [L25] -1 critical := 0; VAL [critical=0] [L26] FORK -1 fork 0 Process0(); VAL [critical=0] [L37] 0 turn := 1; VAL [critical=0, turn=1] [L27] FORK -1 fork 1 Process1(); VAL [critical=0, turn=1] [L56] 1 flag1 := 1; VAL [critical=0, flag1=1, turn=1] [L57] 1 turn := 0; VAL [critical=0, flag1=1, turn=0] [L58] 1 assume flag0 == 0 || turn == 1; VAL [critical=0, flag0=0, flag1=1, turn=0] [L59] 1 assert critical == 0; VAL [critical=0, flag0=0, flag1=1, turn=0] [L60] 1 critical := 1; VAL [critical=1, flag0=0, flag1=1, turn=0] [L38] 0 flag0 := 1; VAL [critical=1, flag0=1, flag1=1, turn=0] [L39] 0 assume flag1 == 0 || turn == 0; VAL [critical=1, flag0=1, flag1=1, turn=0] [L40] 0 assert critical == 0; VAL [critical=1, flag0=1, flag1=1, turn=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 4 error locations. UNSAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 SDtfs, 26 SDslu, 42 SDs, 0 SdLazy, 19 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 350 SizeOfPredicates, 2 NumberOfNonLiveVariables, 35 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...