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/ThreadIdTest-Unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 09:52:08,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 09:52:08,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 09:52:08,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 09:52:08,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 09:52:08,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 09:52:08,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 09:52:08,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 09:52:08,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 09:52:08,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 09:52:08,602 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 09:52:08,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 09:52:08,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 09:52:08,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 09:52:08,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 09:52:08,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 09:52:08,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 09:52:08,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 09:52:08,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 09:52:08,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 09:52:08,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 09:52:08,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 09:52:08,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 09:52:08,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 09:52:08,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 09:52:08,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 09:52:08,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 09:52:08,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 09:52:08,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 09:52:08,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 09:52:08,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 09:52:08,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 09:52:08,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 09:52:08,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 09:52:08,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 09:52:08,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 09:52:08,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 09:52:08,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 09:52:08,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 09:52:08,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 09:52:08,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 09:52:08,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 09:52:08,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 09:52:08,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 09:52:08,685 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 09:52:08,686 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 09:52:08,687 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/concurrentBoogie/ThreadIdTest-Unsafe.bpl [2019-08-05 09:52:08,688 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/concurrentBoogie/ThreadIdTest-Unsafe.bpl' [2019-08-05 09:52:08,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 09:52:08,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 09:52:08,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:08,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 09:52:08,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 09:52:08,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/1) ... [2019-08-05 09:52:08,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/1) ... [2019-08-05 09:52:08,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 09:52:08,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 09:52:08,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 09:52:08,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 09:52:08,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/1) ... [2019-08-05 09:52:08,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/1) ... [2019-08-05 09:52:08,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/1) ... [2019-08-05 09:52:08,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/1) ... [2019-08-05 09:52:08,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/1) ... [2019-08-05 09:52:08,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/1) ... [2019-08-05 09:52:08,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/1) ... [2019-08-05 09:52:08,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 09:52:08,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 09:52:08,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 09:52:08,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 09:52:08,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (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 09:52:08,876 INFO L130 BoogieDeclarations]: Found specification of procedure decrement [2019-08-05 09:52:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure decrement [2019-08-05 09:52:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2019-08-05 09:52:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2019-08-05 09:52:08,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 09:52:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 09:52:08,879 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 09:52:09,086 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 09:52:09,087 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 09:52:09,089 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:09 BoogieIcfgContainer [2019-08-05 09:52:09,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 09:52:09,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 09:52:09,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 09:52:09,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 09:52:09,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 09:52:08" (1/2) ... [2019-08-05 09:52:09,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517741a1 and model type ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 09:52:09, skipping insertion in model container [2019-08-05 09:52:09,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 09:52:09" (2/2) ... [2019-08-05 09:52:09,098 INFO L109 eAbstractionObserver]: Analyzing ICFG ThreadIdTest-Unsafe.bpl [2019-08-05 09:52:09,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_decrement_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-08-05 09:52:09,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_decrement_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-08-05 09:52:09,128 WARN L317 ript$VariableManager]: TermVariabe Thread0_increment_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-08-05 09:52:09,128 WARN L317 ript$VariableManager]: TermVariabe Thread0_increment_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-08-05 09:52:09,169 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 09:52:09,177 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 09:52:09,194 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 09:52:09,219 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 09:52:09,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 09:52:09,220 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 09:52:09,220 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 09:52:09,220 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 09:52:09,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 09:52:09,220 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 09:52:09,220 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 09:52:09,221 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 09:52:09,229 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14places, 12 transitions [2019-08-05 09:52:09,242 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 38 states. [2019-08-05 09:52:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-08-05 09:52:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-08-05 09:52:09,253 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:09,254 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:09,256 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:09,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1305301476, now seen corresponding path program 1 times [2019-08-05 09:52:09,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 09:52:09,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 09:52:09,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 09:52:09,451 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 09:52:09,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 09:52:09,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 09:52:09,475 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 09:52:09,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 09:52:09,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 09:52:09,510 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2019-08-05 09:52:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 09:52:09,529 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2019-08-05 09:52:09,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 09:52:09,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-08-05 09:52:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 09:52:09,545 INFO L225 Difference]: With dead ends: 26 [2019-08-05 09:52:09,545 INFO L226 Difference]: Without dead ends: 20 [2019-08-05 09:52:09,547 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 09:52:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-08-05 09:52:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-08-05 09:52:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-08-05 09:52:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2019-08-05 09:52:09,585 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 29 transitions. Word has length 7 [2019-08-05 09:52:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 09:52:09,585 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 29 transitions. [2019-08-05 09:52:09,586 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 09:52:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2019-08-05 09:52:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-08-05 09:52:09,587 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 09:52:09,587 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-08-05 09:52:09,587 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 09:52:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 09:52:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1307978791, now seen corresponding path program 1 times [2019-08-05 09:52:09,589 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 09:52:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-08-05 09:52:09,626 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:110) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.create(IcfgProgramExecution.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.computeIcfgProgramExecution(IcfgProgramExecutionBuilder.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.IcfgProgramExecutionBuilder.getIcfgProgramExecution(IcfgProgramExecutionBuilder.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:344) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-08-05 09:52:09,633 INFO L168 Benchmark]: Toolchain (without parser) took 903.87 ms. Allocated memory is still 138.4 MB. Free memory was 108.0 MB in the beginning and 73.4 MB in the end (delta: 34.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:09,635 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.73 ms. Allocated memory is still 138.4 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 09:52:09,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.17 ms. Allocated memory is still 138.4 MB. Free memory was 108.0 MB in the beginning and 106.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:09,638 INFO L168 Benchmark]: Boogie Preprocessor took 22.58 ms. Allocated memory is still 138.4 MB. Free memory was 106.4 MB in the beginning and 105.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:09,639 INFO L168 Benchmark]: RCFGBuilder took 291.77 ms. Allocated memory is still 138.4 MB. Free memory was 105.1 MB in the beginning and 96.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:09,640 INFO L168 Benchmark]: TraceAbstraction took 539.27 ms. Allocated memory is still 138.4 MB. Free memory was 95.8 MB in the beginning and 73.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2019-08-05 09:52:09,646 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.73 ms. Allocated memory is still 138.4 MB. Free memory was 109.3 MB in the beginning and 109.1 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 44.17 ms. Allocated memory is still 138.4 MB. Free memory was 108.0 MB in the beginning and 106.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.58 ms. Allocated memory is still 138.4 MB. Free memory was 106.4 MB in the beginning and 105.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.77 ms. Allocated memory is still 138.4 MB. Free memory was 105.1 MB in the beginning and 96.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 539.27 ms. Allocated memory is still 138.4 MB. Free memory was 95.8 MB in the beginning and 73.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.cfg.IcfgProgramExecution.createATESequence(IcfgProgramExecution.java:179) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...