/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 19:04:14,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 19:04:14,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 19:04:14,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 19:04:14,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 19:04:14,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 19:04:14,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 19:04:14,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 19:04:14,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 19:04:14,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 19:04:14,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 19:04:14,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 19:04:14,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 19:04:14,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 19:04:14,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 19:04:14,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 19:04:14,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 19:04:14,817 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-Delay.epf [2021-08-21 19:04:14,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 19:04:14,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 19:04:14,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 19:04:14,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 19:04:14,857 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 19:04:14,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 19:04:14,857 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 19:04:14,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 19:04:14,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 19:04:14,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 19:04:14,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 19:04:14,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 19:04:14,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 19:04:14,869 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 19:04:14,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 19:04:14,869 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 19:04:14,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 19:04:14,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 19:04:14,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 19:04:14,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 19:04:14,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 19:04:14,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 19:04:14,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 19:04:14,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 19:04:14,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 19:04:14,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 19:04:14,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 19:04:14,871 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 19:04:14,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 19:04:14,871 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 19:04:14,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 19:04:15,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 19:04:15,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 19:04:15,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 19:04:15,240 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 19:04:15,241 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 19:04:15,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr12.bpl [2021-08-21 19:04:15,243 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr12.bpl' [2021-08-21 19:04:15,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 19:04:15,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 19:04:15,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 19:04:15,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 19:04:15,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 19:04:15,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 19:04:15,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 19:04:15,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 19:04:15,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 19:04:15,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 19:04:15,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 19:04:15,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 19:04:15,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 19:04:15,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/1) ... [2021-08-21 19:04:15,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 19:04:15,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:15,354 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) [2021-08-21 19:04:15,356 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 [2021-08-21 19:04:15,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 19:04:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 19:04:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 19:04:15,396 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-08-21 19:04:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-08-21 19:04:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-08-21 19:04:15,396 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 19:04:15,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 19:04:15,541 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-21 19:04:15,543 INFO L202 PluginConnector]: Adding new model incr-decr12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:15 BoogieIcfgContainer [2021-08-21 19:04:15,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 19:04:15,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 19:04:15,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 19:04:15,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 19:04:15,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:15" (1/2) ... [2021-08-21 19:04:15,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620d13d0 and model type incr-decr12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:04:15, skipping insertion in model container [2021-08-21 19:04:15,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:15" (2/2) ... [2021-08-21 19:04:15,550 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr12.bpl [2021-08-21 19:04:15,555 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 19:04:15,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 19:04:15,555 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 19:04:15,555 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 19:04:15,854 INFO L148 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2021-08-21 19:04:15,909 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 19:04:15,919 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-21 19:04:15,919 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-08-21 19:05:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 1062883 states, 679065 states have (on average 2.1521592189260232) internal successors, (1461456), 1062882 states have internal predecessors, (1461456), 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) [2021-08-21 19:05:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-21 19:05:52,671 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:05:52,672 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 19:05:52,673 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 9 more)] === [2021-08-21 19:05:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:05:52,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2025807619, now seen corresponding path program 1 times [2021-08-21 19:05:52,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:05:52,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669805309] [2021-08-21 19:05:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:05:52,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:05:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:05:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 19:05:53,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:05:53,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669805309] [2021-08-21 19:05:53,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669805309] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 19:05:53,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 19:05:53,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-21 19:05:53,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277924146] [2021-08-21 19:05:53,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 19:05:53,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:05:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 19:05:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 19:05:55,493 INFO L87 Difference]: Start difference. First operand has 1062883 states, 679065 states have (on average 2.1521592189260232) internal successors, (1461456), 1062882 states have internal predecessors, (1461456), 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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)