/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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 16:06:16,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 16:06:16,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 16:06:16,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 16:06:16,619 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-MCRwithoutDepranks-Lazy.epf [2022-02-10 16:06:16,644 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 16:06:16,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 16:06:16,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 16:06:16,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 16:06:16,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 16:06:16,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 16:06:16,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 16:06:16,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 16:06:16,646 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 16:06:16,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 16:06:16,647 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 16:06:16,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 16:06:16,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 16:06:16,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 16:06:16,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 16:06:16,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 16:06:16,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 16:06:16,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 16:06:16,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 16:06:16,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 16:06:16,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 16:06:16,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 16:06:16,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 16:06:16,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 16:06:16,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 16:06:16,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 16:06:16,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 16:06:16,650 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-10 16:06:16,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 16:06:16,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 16:06:16,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 16:06:16,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 16:06:16,650 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 16:06:16,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-10 16:06:16,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 16:06:16,651 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-10 16:06:16,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 16:06:16,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 16:06:16,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 16:06:16,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 16:06:16,893 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 16:06:16,894 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 16:06:16,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl [2022-02-10 16:06:16,896 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInForkedProcedure01.bpl' [2022-02-10 16:06:16,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 16:06:16,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 16:06:16,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 16:06:16,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 16:06:16,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 16:06:16,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,943 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 16:06:16,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 16:06:16,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 16:06:16,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 16:06:16,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 16:06:16,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 16:06:16,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 16:06:16,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 16:06:16,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 16:06:16,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/1) ... [2022-02-10 16:06:16,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 16:06:16,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:06:16,985 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) [2022-02-10 16:06:16,992 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 [2022-02-10 16:06:17,018 INFO L124 BoogieDeclarations]: Specification and implementation of procedure bar given in one single declaration [2022-02-10 16:06:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2022-02-10 16:06:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2022-02-10 16:06:17,019 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-02-10 16:06:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-10 16:06:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-10 16:06:17,019 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 16:06:17,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 16:06:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 16:06:17,020 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 16:06:17,057 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 16:06:17,058 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 16:06:17,101 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 16:06:17,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 16:06:17,106 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 16:06:17,108 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 04:06:17 BoogieIcfgContainer [2022-02-10 16:06:17,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 16:06:17,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 16:06:17,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 16:06:17,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 16:06:17,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 04:06:16" (1/2) ... [2022-02-10 16:06:17,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613bac69 and model type ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 04:06:17, skipping insertion in model container [2022-02-10 16:06:17,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 04:06:17" (2/2) ... [2022-02-10 16:06:17,115 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInForkedProcedure01.bpl [2022-02-10 16:06:17,122 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 16:06:17,123 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 16:06:17,123 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 16:06:17,123 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 16:06:17,136 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:17,137 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:17,140 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:17,142 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:17,143 WARN L322 ript$VariableManager]: TermVariabe barThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 16:06:17,145 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-10 16:06:17,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-10 16:06:17,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 16:06:17,178 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) [2022-02-10 16:06:17,178 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 [2022-02-10 16:06:17,201 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 16:06:17,206 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 [2022-02-10 16:06:17,206 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 16:06:17,238 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 13 transitions and produced 14 states. [2022-02-10 16:06:17,240 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [fooErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-02-10 16:06:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:06:17,244 INFO L85 PathProgramCache]: Analyzing trace with hash 782458711, now seen corresponding path program 1 times [2022-02-10 16:06:17,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:06:17,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97636140] [2022-02-10 16:06:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:06:17,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:06:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 16:06:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 16:06:17,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 16:06:17,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97636140] [2022-02-10 16:06:17,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97636140] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 16:06:17,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 16:06:17,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 16:06:17,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247864174] [2022-02-10 16:06:17,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 16:06:17,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 16:06:17,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 16:06:17,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 16:06:17,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 16:06:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:06:17,393 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 16:06:17,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 16:06:17,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 16:06:17,411 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 17 transitions and produced 18 states. [2022-02-10 16:06:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 16:06:17,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 16:06:17,412 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [fooErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, fooThread1of1ForFork1Err2INUSE_VIOLATION] === [2022-02-10 16:06:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 16:06:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash 323194809, now seen corresponding path program 1 times [2022-02-10 16:06:17,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 16:06:17,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349528148] [2022-02-10 16:06:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 16:06:17,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 16:06:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 16:06:17,428 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 16:06:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 16:06:17,451 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 16:06:17,452 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-10 16:06:17,453 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-02-10 16:06:17,454 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-10 16:06:17,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-10 16:06:17,455 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location fooThread1of1ForFork1Err2INUSE_VIOLATION (0 of 4 remaining) [2022-02-10 16:06:17,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 16:06:17,460 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-10 16:06:17,463 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 16:06:17,463 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 16:06:17,483 INFO L202 PluginConnector]: Adding new model ForkInForkedProcedure01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 04:06:17 BasicIcfg [2022-02-10 16:06:17,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 16:06:17,484 INFO L158 Benchmark]: Toolchain (without parser) took 571.47ms. Allocated memory is still 194.0MB. Free memory was 158.8MB in the beginning and 165.5MB in the end (delta: -6.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 16:06:17,484 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 159.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 16:06:17,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.60ms. Allocated memory is still 194.0MB. Free memory was 158.8MB in the beginning and 157.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 16:06:17,485 INFO L158 Benchmark]: Boogie Preprocessor took 12.99ms. Allocated memory is still 194.0MB. Free memory was 157.2MB in the beginning and 156.3MB in the end (delta: 847.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 16:06:17,485 INFO L158 Benchmark]: RCFGBuilder took 148.80ms. Allocated memory is still 194.0MB. Free memory was 156.3MB in the beginning and 148.4MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-10 16:06:17,486 INFO L158 Benchmark]: TraceAbstraction took 374.03ms. Allocated memory is still 194.0MB. Free memory was 147.9MB in the beginning and 165.5MB in the end (delta: -17.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 16:06:17,487 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 0.11ms. Allocated memory is still 194.0MB. Free memory is still 159.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.60ms. Allocated memory is still 194.0MB. Free memory was 158.8MB in the beginning and 157.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.99ms. Allocated memory is still 194.0MB. Free memory was 157.2MB in the beginning and 156.3MB in the end (delta: 847.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 148.80ms. Allocated memory is still 194.0MB. Free memory was 156.3MB in the beginning and 148.4MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 374.03ms. Allocated memory is still 194.0MB. Free memory was 147.9MB in the beginning and 165.5MB in the end (delta: -17.6MB). 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: 23]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L18] 0 g := 0; VAL [g=0, x=0] [L20] FORK 0 fork 1 foo(x); VAL [g=0, n=0, x=0] [L29] FORK 1 fork 2 bar(n); VAL [g=0, n=0, n=0, x=0] [L30] 1 g := g + 1; VAL [g=1, n=0, n=0, x=0] [L36] 2 res := 23; VAL [g=1, n=0, n=0, res=23, x=0] [L21] JOIN 2 join 2; VAL [g=1, n=0, n=0, res=23, x=0] [L23] 0 assert g == 0; VAL [g=1, n=0, n=0, res=23, x=0] - UnprovableResult [Line: 26]: 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. - UnprovableResult [Line: 26]: 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, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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! [2022-02-10 16:06:17,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-10 16:06:17,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...