/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_unsafe2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 19:42:20,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 19:42:20,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 19:42:20,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-16 19:42:20,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-16 19:42:20,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-16 19:42:20,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-16 19:42:20,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-16 19:42:20,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-16 19:42:20,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-16 19:42:20,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-16 19:42:20,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-16 19:42:20,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-16 19:42:20,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-16 19:42:20,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-16 19:42:20,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-16 19:42:20,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-16 19:42:20,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-16 19:42:20,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-16 19:42:20,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-16 19:42:20,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-16 19:42:20,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-16 19:42:20,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-16 19:42:20,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-16 19:42:20,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-16 19:42:20,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-16 19:42:20,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-16 19:42:20,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-16 19:42:20,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-16 19:42:20,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-16 19:42:20,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-16 19:42:20,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-16 19:42:20,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-16 19:42:20,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-16 19:42:20,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-16 19:42:20,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-16 19:42:20,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-16 19:42:20,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-16 19:42:20,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-16 19:42:20,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-16 19:42:20,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-16 19:42:20,910 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.epf [2022-02-16 19:42:20,938 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 19:42:20,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 19:42:20,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 19:42:20,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 19:42:20,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 19:42:20,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 19:42:20,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 19:42:20,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 19:42:20,940 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 19:42:20,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 19:42:20,941 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 19:42:20,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 19:42:20,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 19:42:20,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 19:42:20,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 19:42:20,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 19:42:20,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 19:42:20,942 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 19:42:20,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 19:42:20,942 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 19:42:20,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 19:42:20,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 19:42:20,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 19:42:20,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 19:42:20,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 19:42:20,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 19:42:20,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 19:42:20,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 19:42:20,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 19:42:20,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 19:42:20,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 19:42:20,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 19:42:20,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-16 19:42:20,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 19:42:20,946 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-16 19:42:20,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 19:42:21,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 19:42:21,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 19:42:21,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 19:42:21,156 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-16 19:42:21,158 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-16 19:42:21,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe2.bpl [2022-02-16 19:42:21,159 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe2.bpl' [2022-02-16 19:42:21,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 19:42:21,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-16 19:42:21,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 19:42:21,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 19:42:21,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 19:42:21,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,208 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-16 19:42:21,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 19:42:21,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 19:42:21,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 19:42:21,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 19:42:21,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 19:42:21,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 19:42:21,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 19:42:21,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 19:42:21,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/1) ... [2022-02-16 19:42:21,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 19:42:21,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 19:42:21,275 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) [2022-02-16 19:42:21,292 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 [2022-02-16 19:42:21,304 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-16 19:42:21,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 19:42:21,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 19:42:21,304 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2022-02-16 19:42:21,305 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-02-16 19:42:21,305 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-02-16 19:42:21,305 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 19:42:21,340 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 19:42:21,341 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 19:42:21,394 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 19:42:21,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 19:42:21,398 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-16 19:42:21,400 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 07:42:21 BoogieIcfgContainer [2022-02-16 19:42:21,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 19:42:21,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 19:42:21,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 19:42:21,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 19:42:21,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 07:42:21" (1/2) ... [2022-02-16 19:42:21,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679bc8d3 and model type fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 07:42:21, skipping insertion in model container [2022-02-16 19:42:21,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 07:42:21" (2/2) ... [2022-02-16 19:42:21,405 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_unsafe2.bpl [2022-02-16 19:42:21,408 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 19:42:21,408 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 19:42:21,408 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 19:42:21,409 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 19:42:21,423 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-16 19:42:21,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 19:42:21,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 19:42:21,452 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) [2022-02-16 19:42:21,453 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 [2022-02-16 19:42:21,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 19:42:21,478 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=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 19:42:21,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-16 19:42:21,484 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2022-02-16 19:42:21,493 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 14 states have internal predecessors, (20), 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) [2022-02-16 19:42:21,506 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 7 transitions and produced 8 states. [2022-02-16 19:42:21,510 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 19:42:21,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 19:42:21,513 INFO L85 PathProgramCache]: Analyzing trace with hash 39489028, now seen corresponding path program 1 times [2022-02-16 19:42:21,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 19:42:21,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799411838] [2022-02-16 19:42:21,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:21,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 19:42:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 19:42:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 19:42:21,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 19:42:21,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799411838] [2022-02-16 19:42:21,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799411838] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 19:42:21,616 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 19:42:21,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-16 19:42:21,617 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662043390] [2022-02-16 19:42:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 19:42:21,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 19:42:21,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 19:42:21,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 19:42:21,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-16 19:42:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:21,635 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 19:42:21,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-02-16 19:42:21,636 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:21,650 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 15 transitions and produced 16 states. [2022-02-16 19:42:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 19:42:21,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 19:42:21,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 19:42:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 19:42:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1224221456, now seen corresponding path program 1 times [2022-02-16 19:42:21,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 19:42:21,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69056862] [2022-02-16 19:42:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:21,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 19:42:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 19:42:21,658 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-16 19:42:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 19:42:21,669 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-16 19:42:21,669 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-16 19:42:21,670 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2022-02-16 19:42:21,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-02-16 19:42:21,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 3 remaining) [2022-02-16 19:42:21,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 19:42:21,677 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-16 19:42:21,677 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-16 19:42:21,677 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-02-16 19:42:21,682 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-16 19:42:21,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 19:42:21,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 19:42:21,685 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) [2022-02-16 19:42:21,686 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 [2022-02-16 19:42:21,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 19:42:21,689 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=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 19:42:21,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-16 19:42:21,690 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 13 transitions, 38 flow [2022-02-16 19:42:21,698 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 81 states, 73 states have (on average 2.3835616438356166) internal successors, (174), 80 states have internal predecessors, (174), 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) [2022-02-16 19:42:21,700 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 7 transitions and produced 8 states. [2022-02-16 19:42:21,700 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 19:42:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 19:42:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 52014157, now seen corresponding path program 1 times [2022-02-16 19:42:21,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 19:42:21,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055013557] [2022-02-16 19:42:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:21,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 19:42:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 19:42:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 19:42:21,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 19:42:21,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055013557] [2022-02-16 19:42:21,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055013557] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 19:42:21,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 19:42:21,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-16 19:42:21,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000661131] [2022-02-16 19:42:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 19:42:21,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 19:42:21,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 19:42:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 19:42:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-16 19:42:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:21,741 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 19:42:21,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-02-16 19:42:21,741 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:21,766 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 20 transitions and produced 21 states. [2022-02-16 19:42:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 19:42:21,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-16 19:42:21,767 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 19:42:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 19:42:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1207555836, now seen corresponding path program 1 times [2022-02-16 19:42:21,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 19:42:21,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141485114] [2022-02-16 19:42:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:21,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 19:42:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 19:42:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 19:42:21,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 19:42:21,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141485114] [2022-02-16 19:42:21,820 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141485114] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 19:42:21,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487757837] [2022-02-16 19:42:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:21,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 19:42:21,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 19:42:21,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 19:42:21,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-16 19:42:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 19:42:21,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-16 19:42:21,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 19:42:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 19:42:21,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 19:42:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 19:42:22,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487757837] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 19:42:22,004 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 19:42:22,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-16 19:42:22,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831972374] [2022-02-16 19:42:22,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 19:42:22,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 19:42:22,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 19:42:22,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 19:42:22,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-16 19:42:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:22,006 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 19:42:22,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-02-16 19:42:22,006 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 19:42:22,006 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:22,033 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 28 transitions and produced 29 states. [2022-02-16 19:42:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 19:42:22,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-16 19:42:22,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-16 19:42:22,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 19:42:22,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 19:42:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 19:42:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1220655517, now seen corresponding path program 1 times [2022-02-16 19:42:22,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 19:42:22,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831112426] [2022-02-16 19:42:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:22,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 19:42:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 19:42:22,266 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-16 19:42:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 19:42:22,272 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-16 19:42:22,273 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-16 19:42:22,273 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-02-16 19:42:22,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-02-16 19:42:22,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-02-16 19:42:22,273 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-02-16 19:42:22,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-16 19:42:22,274 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-16 19:42:22,275 WARN L235 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-16 19:42:22,275 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-02-16 19:42:22,279 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-16 19:42:22,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 19:42:22,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 19:42:22,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-16 19:42:22,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-02-16 19:42:22,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 19:42:22,290 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=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 19:42:22,290 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-16 19:42:22,291 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 18 transitions, 57 flow [2022-02-16 19:42:22,335 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 423 states, 404 states have (on average 3.099009900990099) internal successors, (1252), 422 states have internal predecessors, (1252), 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) [2022-02-16 19:42:22,336 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 7 transitions and produced 8 states. [2022-02-16 19:42:22,337 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-16 19:42:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 19:42:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 69311067, now seen corresponding path program 1 times [2022-02-16 19:42:22,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 19:42:22,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597899772] [2022-02-16 19:42:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:22,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 19:42:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 19:42:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 19:42:22,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 19:42:22,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597899772] [2022-02-16 19:42:22,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597899772] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 19:42:22,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 19:42:22,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-16 19:42:22,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481339359] [2022-02-16 19:42:22,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 19:42:22,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 19:42:22,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 19:42:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 19:42:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-16 19:42:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:22,366 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 19:42:22,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-02-16 19:42:22,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:22,408 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 20 transitions and produced 21 states. [2022-02-16 19:42:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 19:42:22,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-16 19:42:22,409 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-16 19:42:22,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 19:42:22,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1620541418, now seen corresponding path program 1 times [2022-02-16 19:42:22,410 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 19:42:22,410 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231611059] [2022-02-16 19:42:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:22,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 19:42:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 19:42:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 19:42:22,457 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 19:42:22,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231611059] [2022-02-16 19:42:22,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231611059] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 19:42:22,457 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823141647] [2022-02-16 19:42:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:22,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 19:42:22,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 19:42:22,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 19:42:22,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-16 19:42:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 19:42:22,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2022-02-16 19:42:22,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 19:42:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 19:42:22,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 19:42:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 19:42:22,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823141647] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 19:42:22,539 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 19:42:22,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-16 19:42:22,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481749694] [2022-02-16 19:42:22,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 19:42:22,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 19:42:22,540 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 19:42:22,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 19:42:22,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-16 19:42:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:22,541 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 19:42:22,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-02-16 19:42:22,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 19:42:22,541 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 19:42:22,564 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 33 transitions and produced 34 states. [2022-02-16 19:42:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 19:42:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-16 19:42:22,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-16 19:42:22,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 19:42:22,795 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-16 19:42:22,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 19:42:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash -110651604, now seen corresponding path program 1 times [2022-02-16 19:42:22,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 19:42:22,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311760217] [2022-02-16 19:42:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 19:42:22,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 19:42:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 19:42:22,802 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-16 19:42:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 19:42:22,809 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-16 19:42:22,809 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-16 19:42:22,809 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-02-16 19:42:22,810 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-02-16 19:42:22,810 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2022-02-16 19:42:22,810 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-02-16 19:42:22,810 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-02-16 19:42:22,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-16 19:42:22,811 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-16 19:42:22,815 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2022-02-16 19:42:22,815 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-16 19:42:22,829 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 07:42:22 BasicIcfg [2022-02-16 19:42:22,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-16 19:42:22,830 INFO L158 Benchmark]: Toolchain (without parser) took 1649.45ms. Allocated memory was 231.7MB in the beginning and 290.5MB in the end (delta: 58.7MB). Free memory was 196.7MB in the beginning and 236.5MB in the end (delta: -39.9MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. [2022-02-16 19:42:22,830 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 231.7MB. Free memory is still 197.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-16 19:42:22,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.60ms. Allocated memory is still 231.7MB. Free memory was 196.5MB in the beginning and 195.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-16 19:42:22,830 INFO L158 Benchmark]: Boogie Preprocessor took 14.60ms. Allocated memory is still 231.7MB. Free memory was 195.0MB in the beginning and 194.1MB in the end (delta: 891.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 19:42:22,831 INFO L158 Benchmark]: RCFGBuilder took 173.17ms. Allocated memory is still 231.7MB. Free memory was 194.1MB in the beginning and 186.2MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-16 19:42:22,831 INFO L158 Benchmark]: TraceAbstraction took 1428.13ms. Allocated memory was 231.7MB in the beginning and 290.5MB in the end (delta: 58.7MB). Free memory was 185.7MB in the beginning and 236.5MB in the end (delta: -50.8MB). Peak memory consumption was 7.1MB. Max. memory is 8.0GB. [2022-02-16 19:42:22,832 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 231.7MB. Free memory is still 197.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.60ms. Allocated memory is still 231.7MB. Free memory was 196.5MB in the beginning and 195.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.60ms. Allocated memory is still 231.7MB. Free memory was 195.0MB in the beginning and 194.1MB in the end (delta: 891.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 173.17ms. Allocated memory is still 231.7MB. Free memory was 194.1MB in the beginning and 186.2MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1428.13ms. Allocated memory was 231.7MB in the beginning and 290.5MB in the end (delta: 58.7MB). Free memory was 185.7MB in the beginning and 236.5MB in the end (delta: -50.8MB). Peak memory consumption was 7.1MB. 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 - 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: 17]: assertion can be violated assertion can be violated We found a FailurePath: [L23] 0 x := 0; VAL [x=0] [L26] FORK 0 fork 0 thread(); VAL [x=0] [L16] 1 x := x + 1; VAL [x=1] [L17] 1 assert x < 3; VAL [x=1] [L26] FORK 0 fork 0 thread(); VAL [x=1] [L16] 2 x := x + 1; VAL [x=2] [L17] 2 assert x < 3; VAL [x=2] [L26] FORK 0 fork 0 thread(); VAL [x=2] [L16] 3 x := x + 1; VAL [x=3] [L17] 3 assert x < 3; VAL [x=3] - UnprovableResult [Line: 25]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 14 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=15occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 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 4 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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=81occurred 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, 0.2s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 4/10 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 3 thread instances CFG has 5 procedures, 24 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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=423occurred 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, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 16 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 4/10 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! [2022-02-16 19:42:22,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Forceful destruction successful, exit code 0 [2022-02-16 19:42:23,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Ended with exit code 0 [2022-02-16 19:42:23,281 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 [2022-02-16 19:42:23,484 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...