/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 [2022-03-03 18:37:44,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 18:37:44,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 18:37:44,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 18:37:44,632 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 [2022-03-03 18:37:44,657 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 18:37:44,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 18:37:44,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 18:37:44,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 18:37:44,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 18:37:44,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 18:37:44,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 18:37:44,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 18:37:44,659 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 18:37:44,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 18:37:44,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 18:37:44,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 18:37:44,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 18:37:44,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 18:37:44,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 18:37:44,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 18:37:44,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 18:37:44,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 18:37:44,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 18:37:44,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 18:37:44,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 18:37:44,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 18:37:44,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 18:37:44,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 18:37:44,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 18:37:44,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 18:37:44,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 18:37:44,863 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 18:37:44,871 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 18:37:44,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2022-03-03 18:37:44,872 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2022-03-03 18:37:44,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 18:37:44,888 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 18:37:44,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 18:37:44,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 18:37:44,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 18:37:44,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,905 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 18:37:44,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 18:37:44,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 18:37:44,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 18:37:44,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 18:37:44,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 18:37:44,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 18:37:44,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 18:37:44,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 18:37:44,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/1) ... [2022-03-03 18:37:44,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 18:37:44,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:37:44,937 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) [2022-03-03 18:37:44,969 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 [2022-03-03 18:37:44,994 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 18:37:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 18:37:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 18:37:44,995 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2022-03-03 18:37:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2022-03-03 18:37:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2022-03-03 18:37:44,996 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 18:37:45,027 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 18:37:45,028 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 18:37:45,084 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 18:37:45,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 18:37:45,089 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-03 18:37:45,090 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 06:37:45 BoogieIcfgContainer [2022-03-03 18:37:45,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 18:37:45,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 18:37:45,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 18:37:45,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 18:37:45,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:37:44" (1/2) ... [2022-03-03 18:37:45,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50008265 and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:37:45, skipping insertion in model container [2022-03-03 18:37:45,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 06:37:45" (2/2) ... [2022-03-03 18:37:45,095 INFO L111 eAbstractionObserver]: Analyzing ICFG cutoff_test.bpl [2022-03-03 18:37:45,098 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 18:37:45,098 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 18:37:45,099 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 18:37:45,099 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 18:37:45,115 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-03 18:37:45,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 18:37:45,156 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 [2022-03-03 18:37:45,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-03 18:37:45,164 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 15 transitions, 38 flow [2022-03-03 18:37:45,177 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) [2022-03-03 18:37:45,179 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) [2022-03-03 18:37:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-03 18:37:45,182 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:37:45,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:37:45,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-03 18:37:45,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:37:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1264128633, now seen corresponding path program 1 times [2022-03-03 18:37:45,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:37:45,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135803671] [2022-03-03 18:37:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:37:45,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:37:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:37:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:37:45,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:37:45,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135803671] [2022-03-03 18:37:45,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135803671] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:37:45,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:37:45,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 18:37:45,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433499588] [2022-03-03 18:37:45,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:37:45,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 18:37:45,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:37:45,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 18:37:45,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 18:37:45,365 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) [2022-03-03 18:37:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:37:45,386 INFO L93 Difference]: Finished difference Result 23 states and 39 transitions. [2022-03-03 18:37:45,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 18:37:45,405 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 [2022-03-03 18:37:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:37:45,409 INFO L225 Difference]: With dead ends: 23 [2022-03-03 18:37:45,409 INFO L226 Difference]: Without dead ends: 13 [2022-03-03 18:37:45,410 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 [2022-03-03 18:37:45,413 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 [2022-03-03 18:37:45,413 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] [2022-03-03 18:37:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-03 18:37:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-03 18:37:45,443 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) [2022-03-03 18:37:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-03-03 18:37:45,451 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 19 transitions. Word has length 8 [2022-03-03 18:37:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:37:45,451 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-03-03 18:37:45,451 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) [2022-03-03 18:37:45,451 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 19 transitions. [2022-03-03 18:37:45,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-03 18:37:45,452 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:37:45,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:37:45,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 18:37:45,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-03 18:37:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:37:45,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1294604826, now seen corresponding path program 1 times [2022-03-03 18:37:45,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:37:45,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768026532] [2022-03-03 18:37:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:37:45,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:37:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-03 18:37:45,458 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-03 18:37:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-03 18:37:45,487 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-03 18:37:45,487 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-03 18:37:45,488 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-03-03 18:37:45,490 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-03-03 18:37:45,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 18:37:45,523 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-03 18:37:45,526 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 18:37:45,526 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 18:37:45,535 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 06:37:45 BasicIcfg [2022-03-03 18:37:45,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 18:37:45,536 INFO L158 Benchmark]: Toolchain (without parser) took 647.20ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 150.5MB in the beginning and 203.8MB in the end (delta: -53.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 18:37:45,536 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 191.9MB. Free memory is still 151.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 18:37:45,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.81ms. Allocated memory is still 191.9MB. Free memory was 150.5MB in the beginning and 149.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 18:37:45,537 INFO L158 Benchmark]: Boogie Preprocessor took 8.81ms. Allocated memory is still 191.9MB. Free memory was 149.0MB in the beginning and 148.0MB in the end (delta: 912.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 18:37:45,537 INFO L158 Benchmark]: RCFGBuilder took 174.19ms. Allocated memory is still 191.9MB. Free memory was 147.9MB in the beginning and 140.2MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-03 18:37:45,537 INFO L158 Benchmark]: TraceAbstraction took 444.10ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 139.7MB in the beginning and 203.8MB in the end (delta: -64.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 18:37:45,539 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 0.10ms. Allocated memory is still 191.9MB. Free memory is still 151.5MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 16.81ms. Allocated memory is still 191.9MB. Free memory was 150.5MB in the beginning and 149.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 8.81ms. Allocated memory is still 191.9MB. Free memory was 149.0MB in the beginning and 148.0MB in the end (delta: 912.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 174.19ms. Allocated memory is still 191.9MB. Free memory was 147.9MB in the beginning and 140.2MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 444.10ms. Allocated memory was 191.9MB in the beginning and 230.7MB in the end (delta: 38.8MB). Free memory was 139.7MB in the beginning and 203.8MB in the end (delta: -64.2MB). 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: 0.4s, 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! [2022-03-03 18:37:45,564 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...