/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-MCRwithDepranks-Lazy-NoForkJoinOpt.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/fork_in_loop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 10:24:30,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 10:24:30,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 10:24:30,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-16 10:24:30,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-16 10:24:30,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-16 10:24:30,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-16 10:24:30,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-16 10:24:30,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-16 10:24:30,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-16 10:24:30,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-16 10:24:30,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-16 10:24:30,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 10:24:30,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 10:24:30,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 10:24:30,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 10:24:30,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 10:24:30,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 10:24:30,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 10:24:30,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 10:24:30,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 10:24:30,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 10:24:30,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 10:24:30,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 10:24:30,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-16 10:24:30,982 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-MCRwithDepranks-Lazy-NoForkJoinOpt.epf [2022-03-16 10:24:31,007 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 10:24:31,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 10:24:31,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 10:24:31,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 10:24:31,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 10:24:31,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 10:24:31,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 10:24:31,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 10:24:31,009 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 10:24:31,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 10:24:31,010 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 10:24:31,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 10:24:31,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 10:24:31,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 10:24:31,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 10:24:31,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 10:24:31,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 10:24:31,010 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 10:24:31,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 10:24:31,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 10:24:31,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 10:24:31,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 10:24:31,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 10:24:31,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 10:24:31,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 10:24:31,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 10:24:31,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 10:24:31,012 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 10:24:31,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 10:24:31,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 10:24:31,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 10:24:31,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 10:24:31,012 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 10:24:31,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 10:24:31,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 10:24:31,012 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-16 10:24:31,013 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-16 10:24:31,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 10:24:31,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 10:24:31,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 10:24:31,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 10:24:31,236 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 10:24:31,237 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 10:24:31,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_in_loop.bpl [2022-03-16 10:24:31,238 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_in_loop.bpl' [2022-03-16 10:24:31,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 10:24:31,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 10:24:31,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 10:24:31,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 10:24:31,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 10:24:31,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,282 INFO L137 Inliner]: procedures = 2, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 10:24:31,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 10:24:31,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 10:24:31,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 10:24:31,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 10:24:31,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 10:24:31,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 10:24:31,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 10:24:31,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 10:24:31,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/1) ... [2022-03-16 10:24:31,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 10:24:31,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 10:24:31,333 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) [2022-03-16 10:24:31,339 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 [2022-03-16 10:24:31,359 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-03-16 10:24:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-03-16 10:24:31,360 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-03-16 10:24:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 10:24:31,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 10:24:31,361 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-16 10:24:31,395 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 10:24:31,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 10:24:31,446 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 10:24:31,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 10:24:31,451 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 10:24:31,452 INFO L202 PluginConnector]: Adding new model fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 10:24:31 BoogieIcfgContainer [2022-03-16 10:24:31,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 10:24:31,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 10:24:31,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 10:24:31,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 10:24:31,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:24:31" (1/2) ... [2022-03-16 10:24:31,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d1badd and model type fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:24:31, skipping insertion in model container [2022-03-16 10:24:31,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 10:24:31" (2/2) ... [2022-03-16 10:24:31,458 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_in_loop.bpl [2022-03-16 10:24:31,461 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 10:24:31,462 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 10:24:31,462 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 10:24:31,462 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 10:24:31,476 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,476 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,476 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,477 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,480 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,482 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,485 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-03-16 10:24:31,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 10:24:31,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 10:24:31,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-16 10:24:31,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-16 10:24:31,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 10:24:31,584 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=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, 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=false, mMcrOverapproximateWrwc=true [2022-03-16 10:24:31,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 10:24:31,614 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 11 transitions and produced 12 states. [2022-03-16 10:24:31,616 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 10:24:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 10:24:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1658350537, now seen corresponding path program 1 times [2022-03-16 10:24:31,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 10:24:31,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685977942] [2022-03-16 10:24:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 10:24:31,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 10:24:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 10:24:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-16 10:24:31,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 10:24:31,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685977942] [2022-03-16 10:24:31,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685977942] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 10:24:31,745 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 10:24:31,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 10:24:31,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984723640] [2022-03-16 10:24:31,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 10:24:31,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-16 10:24:31,750 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 10:24:31,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-16 10:24:31,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-16 10:24:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 10:24:31,784 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 10:24:31,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-03-16 10:24:31,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 10:24:31,829 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 25 states. [2022-03-16 10:24:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 10:24:31,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 10:24:31,830 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 10:24:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 10:24:31,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1092586692, now seen corresponding path program 1 times [2022-03-16 10:24:31,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 10:24:31,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515771143] [2022-03-16 10:24:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 10:24:31,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 10:24:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 10:24:31,842 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-16 10:24:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 10:24:31,857 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-16 10:24:31,858 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-16 10:24:31,859 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 3 remaining) [2022-03-16 10:24:31,860 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-03-16 10:24:31,861 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2022-03-16 10:24:31,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-16 10:24:31,866 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-16 10:24:31,866 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-03-16 10:24:31,867 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-03-16 10:24:31,872 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,872 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,874 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,874 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,874 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,875 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,875 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,875 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,875 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,876 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,877 WARN L322 ript$VariableManager]: TermVariabe fooThread1of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,878 WARN L322 ript$VariableManager]: TermVariabe fooThread2of2ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-16 10:24:31,880 INFO L148 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-03-16 10:24:31,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 10:24:31,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 10:24:31,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-16 10:24:31,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-03-16 10:24:31,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 10:24:31,887 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=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, 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=false, mMcrOverapproximateWrwc=true [2022-03-16 10:24:31,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 10:24:31,892 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 21 transitions and produced 22 states. [2022-03-16 10:24:31,892 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 10:24:31,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 10:24:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash 563208564, now seen corresponding path program 1 times [2022-03-16 10:24:31,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 10:24:31,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321055555] [2022-03-16 10:24:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 10:24:31,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 10:24:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 10:24:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-16 10:24:31,915 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 10:24:31,915 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321055555] [2022-03-16 10:24:31,915 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321055555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 10:24:31,915 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 10:24:31,915 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 10:24:31,915 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419514999] [2022-03-16 10:24:31,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 10:24:31,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-16 10:24:31,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 10:24:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-16 10:24:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-16 10:24:31,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 10:24:31,917 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 10:24:31,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-03-16 10:24:31,917 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 10:24:31,959 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 34 transitions and produced 35 states. [2022-03-16 10:24:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 10:24:31,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-16 10:24:31,961 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 10:24:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 10:24:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1981956494, now seen corresponding path program 1 times [2022-03-16 10:24:31,962 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 10:24:31,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169943326] [2022-03-16 10:24:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 10:24:31,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 10:24:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 10:24:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-16 10:24:32,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 10:24:32,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169943326] [2022-03-16 10:24:32,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169943326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 10:24:32,065 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 10:24:32,065 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-16 10:24:32,065 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777330836] [2022-03-16 10:24:32,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 10:24:32,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-16 10:24:32,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 10:24:32,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-16 10:24:32,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-16 10:24:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 10:24:32,066 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 10:24:32,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-03-16 10:24:32,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 10:24:32,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 10:24:32,122 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 43 transitions and produced 44 states. [2022-03-16 10:24:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 10:24:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-16 10:24:32,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-16 10:24:32,123 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 10:24:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 10:24:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2117524965, now seen corresponding path program 1 times [2022-03-16 10:24:32,123 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 10:24:32,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035094028] [2022-03-16 10:24:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 10:24:32,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 10:24:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 10:24:32,138 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-16 10:24:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-16 10:24:32,167 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-16 10:24:32,168 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-16 10:24:32,168 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-16 10:24:32,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-16 10:24:32,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-16 10:24:32,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-16 10:24:32,173 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-16 10:24:32,177 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-03-16 10:24:32,177 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-16 10:24:32,188 INFO L202 PluginConnector]: Adding new model fork_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 10:24:32 BasicIcfg [2022-03-16 10:24:32,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-16 10:24:32,189 INFO L158 Benchmark]: Toolchain (without parser) took 930.84ms. Allocated memory was 173.0MB in the beginning and 207.6MB in the end (delta: 34.6MB). Free memory was 139.7MB in the beginning and 180.2MB in the end (delta: -40.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 10:24:32,189 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 10:24:32,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.43ms. Allocated memory is still 173.0MB. Free memory was 139.5MB in the beginning and 138.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-16 10:24:32,189 INFO L158 Benchmark]: Boogie Preprocessor took 13.03ms. Allocated memory is still 173.0MB. Free memory was 138.0MB in the beginning and 137.2MB in the end (delta: 854.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-16 10:24:32,190 INFO L158 Benchmark]: RCFGBuilder took 153.97ms. Allocated memory is still 173.0MB. Free memory was 137.0MB in the beginning and 128.9MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-16 10:24:32,190 INFO L158 Benchmark]: TraceAbstraction took 734.99ms. Allocated memory was 173.0MB in the beginning and 207.6MB in the end (delta: 34.6MB). Free memory was 128.5MB in the beginning and 180.2MB in the end (delta: -51.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-16 10:24:32,192 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 0.09ms. Allocated memory is still 173.0MB. Free memory is still 140.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.43ms. Allocated memory is still 173.0MB. Free memory was 139.5MB in the beginning and 138.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.03ms. Allocated memory is still 173.0MB. Free memory was 138.0MB in the beginning and 137.2MB in the end (delta: 854.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 153.97ms. Allocated memory is still 173.0MB. Free memory was 137.0MB in the beginning and 128.9MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 734.99ms. Allocated memory was 173.0MB in the beginning and 207.6MB in the end (delta: 34.6MB). Free memory was 128.5MB in the beginning and 180.2MB in the end (delta: -51.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - 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 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - 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: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L20] 0 x := 1; VAL [x=1] [L22] COND TRUE 0 x < 2 VAL [x=1] [L23] FORK 0 fork x foo(x); VAL [i=1, x=1] [L24] 0 x := x + 1; VAL [i=1, x=2] [L22] COND FALSE 0 !(x < 2) VAL [i=1, x=2] [L26] 0 x := 1; VAL [i=1, x=1] [L42] 1 y := 4; VAL [i=1, x=1, y=4] [L27] JOIN 1 join x; VAL [i=1, x=1, y=4] [L28] COND TRUE 0 x < 3 VAL [i=1, x=1, y=4] [L29] FORK 0 fork x foo(x); VAL [i=1, x=1, y=4] [L30] 0 x := x + 1; VAL [i=1, x=2, y=4] [L28] COND TRUE 0 x < 3 VAL [i=1, x=2, y=4] [L29] FORK 0 fork x foo(x); VAL [i=2, x=2, y=4] [L30] 0 x := x + 1; VAL [i=2, x=3, y=4] [L28] COND FALSE 0 !(x < 3) VAL [i=2, x=3, y=4] [L42] 2 y := 4; VAL [i=2, x=3, y=4] [L42] 3 y := 4; VAL [i=2, x=3, y=4] [L33] JOIN 2 join 1; VAL [i=2, x=3, y=4] [L34] JOIN 3 join 2; VAL [i=2, x=3, y=4] [L35] 0 assert false; VAL [i=2, x=3, y=4] - UnprovableResult [Line: 23]: 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. - UnprovableResult [Line: 29]: 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 4 procedures, 26 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 6 procedures, 32 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 15/15 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! [2022-03-16 10:24:32,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Forceful destruction successful, exit code 0 [2022-03-16 10:24:32,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-03-16 10:24:32,631 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...