/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 17:05:05,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 17:05:05,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 17:05:05,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 17:05:05,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-01 17:05:05,683 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 17:05:05,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 17:05:05,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 17:05:05,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 17:05:05,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 17:05:05,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 17:05:05,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 17:05:05,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 17:05:05,684 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 17:05:05,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 17:05:05,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 17:05:05,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 17:05:05,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 17:05:05,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 17:05:05,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 17:05:05,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 17:05:05,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:05:05,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 17:05:05,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 17:05:05,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 17:05:05,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 17:05:05,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 17:05:05,687 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 17:05:05,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 17:05:05,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 17:05:05,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 17:05:05,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 17:05:05,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 17:05:05,897 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 17:05:05,897 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 17:05:05,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2022-03-01 17:05:05,898 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2022-03-01 17:05:05,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 17:05:05,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 17:05:05,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 17:05:05,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 17:05:05,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 17:05:05,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,931 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 17:05:05,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 17:05:05,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 17:05:05,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 17:05:05,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 17:05:05,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 17:05:05,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 17:05:05,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 17:05:05,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 17:05:05,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/1) ... [2022-03-01 17:05:05,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 17:05:05,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 17:05:05,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 17:05:05,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 17:05:06,002 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-01 17:05:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 17:05:06,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 17:05:06,003 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2022-03-01 17:05:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2022-03-01 17:05:06,003 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2022-03-01 17:05:06,003 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 17:05:06,032 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 17:05:06,033 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 17:05:06,099 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 17:05:06,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 17:05:06,106 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-01 17:05:06,107 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:05:06 BoogieIcfgContainer [2022-03-01 17:05:06,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 17:05:06,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 17:05:06,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 17:05:06,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 17:05:06,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 05:05:05" (1/2) ... [2022-03-01 17:05:06,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f0b937 and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 05:05:06, skipping insertion in model container [2022-03-01 17:05:06,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 05:05:06" (2/2) ... [2022-03-01 17:05:06,115 INFO L111 eAbstractionObserver]: Analyzing ICFG cutoff_test.bpl [2022-03-01 17:05:06,123 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 17:05:06,123 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 17:05:06,123 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 17:05:06,123 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 17:05:06,153 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-01 17:05:06,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 17:05:06,197 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 17:05:06,197 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-01 17:05:06,206 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 15 transitions, 38 flow [2022-03-01 17:05:06,218 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:05:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:05:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-01 17:05:06,224 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:06,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:06,225 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 17:05:06,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1264128633, now seen corresponding path program 1 times [2022-03-01 17:05:06,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:06,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422681930] [2022-03-01 17:05:06,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 17:05:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 17:05:06,365 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 17:05:06,365 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422681930] [2022-03-01 17:05:06,366 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422681930] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 17:05:06,366 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 17:05:06,366 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 17:05:06,367 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119913876] [2022-03-01 17:05:06,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 17:05:06,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 17:05:06,371 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 17:05:06,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 17:05:06,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:05:06,392 INFO L87 Difference]: Start difference. First operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:05:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 17:05:06,438 INFO L93 Difference]: Finished difference Result 23 states and 39 transitions. [2022-03-01 17:05:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 17:05:06,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-03-01 17:05:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 17:05:06,464 INFO L225 Difference]: With dead ends: 23 [2022-03-01 17:05:06,464 INFO L226 Difference]: Without dead ends: 13 [2022-03-01 17:05:06,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 17:05:06,468 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 17:05:06,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 17:05:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-01 17:05:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-01 17:05:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:05:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-03-01 17:05:06,488 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 19 transitions. Word has length 8 [2022-03-01 17:05:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 17:05:06,488 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-03-01 17:05:06,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 17:05:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 19 transitions. [2022-03-01 17:05:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-01 17:05:06,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 17:05:06,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 17:05:06,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 17:05:06,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-01 17:05:06,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 17:05:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1294604826, now seen corresponding path program 1 times [2022-03-01 17:05:06,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 17:05:06,490 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42767570] [2022-03-01 17:05:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 17:05:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 17:05:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 17:05:06,496 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-01 17:05:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 17:05:06,507 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-01 17:05:06,507 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-01 17:05:06,517 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-03-01 17:05:06,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-01 17:05:06,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 17:05:06,529 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-01 17:05:06,532 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 17:05:06,532 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 17:05:06,539 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 05:05:06 BasicIcfg [2022-03-01 17:05:06,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 17:05:06,549 INFO L158 Benchmark]: Toolchain (without parser) took 625.80ms. Allocated memory was 192.9MB in the beginning and 253.8MB in the end (delta: 60.8MB). Free memory was 158.4MB in the beginning and 234.3MB in the end (delta: -75.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:05:06,550 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 192.9MB. Free memory was 159.5MB in the beginning and 159.3MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:05:06,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.77ms. Allocated memory is still 192.9MB. Free memory was 158.4MB in the beginning and 156.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 17:05:06,551 INFO L158 Benchmark]: Boogie Preprocessor took 11.74ms. Allocated memory is still 192.9MB. Free memory was 156.9MB in the beginning and 155.9MB in the end (delta: 983.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 17:05:06,551 INFO L158 Benchmark]: RCFGBuilder took 161.48ms. Allocated memory is still 192.9MB. Free memory was 155.9MB in the beginning and 147.9MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-01 17:05:06,551 INFO L158 Benchmark]: TraceAbstraction took 429.32ms. Allocated memory was 192.9MB in the beginning and 253.8MB in the end (delta: 60.8MB). Free memory was 147.5MB in the beginning and 234.3MB in the end (delta: -86.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 17:05:06,553 INFO L339 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 0.12ms. Allocated memory is still 192.9MB. Free memory was 159.5MB in the beginning and 159.3MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.77ms. Allocated memory is still 192.9MB. Free memory was 158.4MB in the beginning and 156.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.74ms. Allocated memory is still 192.9MB. Free memory was 156.9MB in the beginning and 155.9MB in the end (delta: 983.6kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 161.48ms. Allocated memory is still 192.9MB. Free memory was 155.9MB in the beginning and 147.9MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 429.32ms. Allocated memory was 192.9MB in the beginning and 253.8MB in the end (delta: 60.8MB). Free memory was 147.5MB in the beginning and 234.3MB in the end (delta: -86.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: assertion can be violated assertion can be violated We found a FailurePath: [L20] FORK 0 fork 1 Thread1(); [L22] 0 x := 0; VAL [x=0] [L37] 1 x := x + 1; VAL [x=1] [L23] 0 x := 2 * x; VAL [x=2] [L25] JOIN 1 join 1; VAL [x=2] [L26] 0 assert x != 2; VAL [x=2] - UnprovableResult [Line: 17]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-01 17:05:06,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...