/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-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 22:52:29,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 22:52:29,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 22:52:29,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 22:52:29,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-01 22:52:29,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-01 22:52:29,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-01 22:52:29,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-01 22:52:29,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-01 22:52:29,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-01 22:52:29,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-01 22:52:29,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-01 22:52:29,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-01 22:52:29,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-01 22:52:29,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-01 22:52:29,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-01 22:52:29,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-01 22:52:29,241 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-wrwc.epf [2022-03-01 22:52:29,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 22:52:29,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 22:52:29,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 22:52:29,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 22:52:29,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 22:52:29,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 22:52:29,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 22:52:29,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 22:52:29,269 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 22:52:29,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 22:52:29,269 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 22:52:29,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 22:52:29,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 22:52:29,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 22:52:29,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 22:52:29,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 22:52:29,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 22:52:29,272 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-01 22:52:29,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 22:52:29,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 22:52:29,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 22:52:29,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 22:52:29,273 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 22:52:29,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-01 22:52:29,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 22:52:29,273 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-01 22:52:29,274 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-03-01 22:52:29,274 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-01 22:52:29,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 22:52:29,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 22:52:29,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 22:52:29,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 22:52:29,475 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-01 22:52:29,478 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-01 22:52:29,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl [2022-03-01 22:52:29,479 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/multiple_fork_same_id.bpl' [2022-03-01 22:52:29,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 22:52:29,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-01 22:52:29,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 22:52:29,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 22:52:29,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 22:52:29,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,515 INFO L137 Inliner]: procedures = 2, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-01 22:52:29,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 22:52:29,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 22:52:29,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 22:52:29,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 22:52:29,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 22:52:29,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 22:52:29,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 22:52:29,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 22:52:29,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/1) ... [2022-03-01 22:52:29,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 22:52:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 22:52:29,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-01 22:52:29,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-01 22:52:29,586 INFO L124 BoogieDeclarations]: Specification and implementation of procedure increment given in one single declaration [2022-03-01 22:52:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2022-03-01 22:52:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2022-03-01 22:52:29,586 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-01 22:52:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 22:52:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 22:52:29,587 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 22:52:29,617 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 22:52:29,618 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 22:52:29,667 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 22:52:29,671 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 22:52:29,671 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-01 22:52:29,673 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 10:52:29 BoogieIcfgContainer [2022-03-01 22:52:29,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 22:52:29,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 22:52:29,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 22:52:29,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 22:52:29,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.03 10:52:29" (1/2) ... [2022-03-01 22:52:29,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6b790 and model type multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 10:52:29, skipping insertion in model container [2022-03-01 22:52:29,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 10:52:29" (2/2) ... [2022-03-01 22:52:29,678 INFO L111 eAbstractionObserver]: Analyzing ICFG multiple_fork_same_id.bpl [2022-03-01 22:52:29,681 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 22:52:29,681 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 22:52:29,681 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 22:52:29,681 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 22:52:29,695 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,695 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,696 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,696 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,696 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,696 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,696 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,697 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,697 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,697 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,697 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,697 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,700 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,701 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,702 WARN L322 ript$VariableManager]: TermVariabe incrementThread1of1ForFork2_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 22:52:29,704 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-01 22:52:29,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-01 22:52:29,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 22:52:29,749 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) [2022-03-01 22:52:29,750 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 [2022-03-01 22:52:29,769 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 22:52:29,774 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=false [2022-03-01 22:52:29,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-01 22:52:29,802 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 29 transitions and produced 30 states. [2022-03-01 22:52:29,804 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 22:52:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 22:52:29,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2143640910, now seen corresponding path program 1 times [2022-03-01 22:52:29,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 22:52:29,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371876001] [2022-03-01 22:52:29,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 22:52:29,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 22:52:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 22:52:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 22:52:30,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 22:52:30,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371876001] [2022-03-01 22:52:30,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371876001] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 22:52:30,049 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 22:52:30,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 22:52:30,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637953599] [2022-03-01 22:52:30,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 22:52:30,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 22:52:30,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 22:52:30,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 22:52:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 22:52:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 22:52:30,085 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-01 22:52:30,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-01 22:52:30,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-01 22:52:30,154 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 32 transitions and produced 33 states. [2022-03-01 22:52:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 22:52:30,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 22:52:30,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-01 22:52:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 22:52:30,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2143640941, now seen corresponding path program 1 times [2022-03-01 22:52:30,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 22:52:30,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259378171] [2022-03-01 22:52:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 22:52:30,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 22:52:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 22:52:30,163 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-01 22:52:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-01 22:52:30,218 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-01 22:52:30,219 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-03-01 22:52:30,220 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-01 22:52:30,221 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-01 22:52:30,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-01 22:52:30,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-01 22:52:30,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 22:52:30,232 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-01 22:52:30,238 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 22:52:30,238 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 22:52:30,251 INFO L202 PluginConnector]: Adding new model multiple_fork_same_id.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 10:52:30 BasicIcfg [2022-03-01 22:52:30,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 22:52:30,252 INFO L158 Benchmark]: Toolchain (without parser) took 753.25ms. Allocated memory was 211.8MB in the beginning and 305.1MB in the end (delta: 93.3MB). Free memory was 170.5MB in the beginning and 275.7MB in the end (delta: -105.2MB). Peak memory consumption was 6.7MB. Max. memory is 8.0GB. [2022-03-01 22:52:30,253 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 211.8MB. Free memory is still 171.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 22:52:30,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.72ms. Allocated memory is still 211.8MB. Free memory was 170.3MB in the beginning and 168.8MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-01 22:52:30,254 INFO L158 Benchmark]: Boogie Preprocessor took 9.23ms. Allocated memory is still 211.8MB. Free memory was 168.8MB in the beginning and 168.1MB in the end (delta: 753.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 22:52:30,254 INFO L158 Benchmark]: RCFGBuilder took 145.28ms. Allocated memory is still 211.8MB. Free memory was 167.9MB in the beginning and 160.2MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-01 22:52:30,256 INFO L158 Benchmark]: TraceAbstraction took 577.15ms. Allocated memory was 211.8MB in the beginning and 305.1MB in the end (delta: 93.3MB). Free memory was 159.8MB in the beginning and 275.7MB in the end (delta: -115.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 22:52:30,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 211.8MB. Free memory is still 171.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.72ms. Allocated memory is still 211.8MB. Free memory was 170.3MB in the beginning and 168.8MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.23ms. Allocated memory is still 211.8MB. Free memory was 168.8MB in the beginning and 168.1MB in the end (delta: 753.1kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 145.28ms. Allocated memory is still 211.8MB. Free memory was 167.9MB in the beginning and 160.2MB in the end (delta: 7.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 577.15ms. Allocated memory was 211.8MB in the beginning and 305.1MB in the end (delta: 93.3MB). Free memory was 159.8MB in the beginning and 275.7MB in the end (delta: -115.9MB). 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 - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L19] FORK 0 fork 42 increment(7); VAL [n=7] [L20] FORK 0 fork 42 increment(23); VAL [n=7] [L21] FORK 0 fork 42 increment(39); VAL [n=39] [L34] 3 res := n + 1; VAL [n=39, res=40] [L34] 2 res := n + 1; VAL [n=39, res=40] [L34] 1 res := n + 1; VAL [n=39, res=40] [L24] JOIN 2 join 42 assign x; VAL [n=39, res=40, x=24] [L28] 0 assert x == 8 || x == 40; VAL [n=39, res=40, x=24] - UnprovableResult [Line: 13]: 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: 19]: 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: 20]: 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 5 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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: 5, 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, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 70 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-01 22:52:30,299 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 [2022-03-01 22:52:30,500 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...