/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/queue-add-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-20 04:00:17,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 04:00:17,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 04:00:17,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 04:00:17,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 04:00:17,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 04:00:17,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 04:00:17,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 04:00:17,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 04:00:17,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 04:00:17,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 04:00:17,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 04:00:17,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 04:00:17,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 04:00:17,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 04:00:17,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 04:00:17,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 04:00:17,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 04:00:17,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 04:00:17,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 04:00:17,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 04:00:17,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 04:00:17,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 04:00:17,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 04:00:17,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-20 04:00:17,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 04:00:17,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 04:00:17,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 04:00:17,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 04:00:17,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 04:00:17,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 04:00:17,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 04:00:17,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 04:00:17,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 04:00:17,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 04:00:17,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 04:00:17,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy.epf [2022-02-20 04:00:17,187 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 04:00:17,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 04:00:17,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 04:00:17,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 04:00:17,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 04:00:17,188 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 04:00:17,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 04:00:17,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 04:00:17,193 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 04:00:17,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 04:00:17,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 04:00:17,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 04:00:17,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 04:00:17,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 04:00:17,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 04:00:17,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 04:00:17,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 04:00:17,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 04:00:17,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 04:00:17,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 04:00:17,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 04:00:17,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 04:00:17,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 04:00:17,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-20 04:00:17,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 04:00:17,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 04:00:17,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 04:00:17,196 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-20 04:00:17,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 04:00:17,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 04:00:17,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 04:00:17,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 04:00:17,197 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 04:00:17,197 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-20 04:00:17,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 04:00:17,197 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-20 04:00:17,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-20 04:00:17,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 04:00:17,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 04:00:17,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 04:00:17,413 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-20 04:00:17,420 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-20 04:00:17,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/queue-add-3.wvr.bpl [2022-02-20 04:00:17,422 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/queue-add-3.wvr.bpl' [2022-02-20 04:00:17,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 04:00:17,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-20 04:00:17,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 04:00:17,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 04:00:17,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 04:00:17,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,460 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-20 04:00:17,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 04:00:17,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 04:00:17,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 04:00:17,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 04:00:17,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 04:00:17,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 04:00:17,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 04:00:17,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 04:00:17,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/1) ... [2022-02-20 04:00:17,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 04:00:17,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 04:00:17,502 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) [2022-02-20 04:00:17,510 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 [2022-02-20 04:00:17,529 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-20 04:00:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-20 04:00:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-20 04:00:17,530 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-20 04:00:17,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-20 04:00:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-20 04:00:17,530 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-20 04:00:17,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 04:00:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 04:00:17,530 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-20 04:00:17,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-20 04:00:17,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-20 04:00:17,532 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-20 04:00:17,569 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 04:00:17,570 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 04:00:17,703 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 04:00:17,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 04:00:17,717 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 04:00:17,719 INFO L202 PluginConnector]: Adding new model queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:00:17 BoogieIcfgContainer [2022-02-20 04:00:17,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 04:00:17,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 04:00:17,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 04:00:17,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 04:00:17,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 04:00:17" (1/2) ... [2022-02-20 04:00:17,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761b13c9 and model type queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:00:17, skipping insertion in model container [2022-02-20 04:00:17,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "queue-add-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:00:17" (2/2) ... [2022-02-20 04:00:17,741 INFO L111 eAbstractionObserver]: Analyzing ICFG queue-add-3.wvr.bpl [2022-02-20 04:00:17,745 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-20 04:00:17,745 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 04:00:17,745 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 04:00:17,745 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-20 04:00:17,788 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-20 04:00:17,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-20 04:00:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 04:00:17,836 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) [2022-02-20 04:00:17,837 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 [2022-02-20 04:00:17,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 04:00:17,871 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-20 04:00:17,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-20 04:00:20,205 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 258195 transitions and produced 86798 states. [2022-02-20 04:00:20,207 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-20 04:00:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 04:00:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -985483467, now seen corresponding path program 1 times [2022-02-20 04:00:20,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 04:00:20,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260136996] [2022-02-20 04:00:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 04:00:20,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 04:00:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 04:00:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 31 proven. 9538 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-02-20 04:00:22,661 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 04:00:22,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260136996] [2022-02-20 04:00:22,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260136996] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 04:00:22,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028014593] [2022-02-20 04:00:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 04:00:22,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 04:00:22,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 04:00:22,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 04:00:22,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-20 04:00:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 04:00:22,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-20 04:00:22,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 04:00:24,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-02-20 04:00:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 0 proven. 8503 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2022-02-20 04:00:24,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 04:00:25,152 INFO L353 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-02-20 04:00:25,152 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2022-02-20 04:00:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 12 proven. 8491 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2022-02-20 04:00:25,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028014593] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 04:00:25,539 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 04:00:25,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 16, 16] total 58 [2022-02-20 04:00:25,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989123195] [2022-02-20 04:00:25,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 04:00:25,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-20 04:00:25,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 04:00:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-20 04:00:25,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3303, Unknown=0, NotChecked=0, Total=3422 [2022-02-20 04:00:25,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 04:00:25,597 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 04:00:25,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 7.11864406779661) internal successors, (420), 58 states have internal predecessors, (420), 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) [2022-02-20 04:00:25,603 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 04:01:49,743 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2415228 transitions and produced 739990 states. [2022-02-20 04:01:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 901 states. [2022-02-20 04:01:49,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-20 04:01:49,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-02-20 04:01:49,958 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-20 04:01:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 04:01:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash 203801777, now seen corresponding path program 2 times [2022-02-20 04:01:49,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 04:01:49,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050402822] [2022-02-20 04:01:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 04:01:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 04:01:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 04:01:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 20511 backedges. 38 proven. 20014 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-02-20 04:01:52,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 04:01:52,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050402822] [2022-02-20 04:01:52,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050402822] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 04:01:52,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293241045] [2022-02-20 04:01:52,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-20 04:01:52,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 04:01:52,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 04:01:52,534 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) [2022-02-20 04:01:52,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-20 04:01:52,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-20 04:01:52,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 04:01:52,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 176 conjunts are in the unsatisfiable core [2022-02-20 04:01:52,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 04:01:54,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-20 04:01:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 20511 backedges. 38 proven. 20014 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-02-20 04:01:54,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 04:01:56,425 INFO L353 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-02-20 04:01:56,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-02-20 04:01:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 20511 backedges. 38 proven. 20014 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-02-20 04:01:57,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293241045] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 04:01:57,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 04:01:57,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 92 [2022-02-20 04:01:57,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246427220] [2022-02-20 04:01:57,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 04:01:57,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-02-20 04:01:57,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 04:01:57,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-02-20 04:01:57,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=8343, Unknown=0, NotChecked=0, Total=8556 [2022-02-20 04:01:57,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 04:01:57,314 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 04:01:57,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 7.064516129032258) internal successors, (657), 92 states have internal predecessors, (657), 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) [2022-02-20 04:01:57,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 901 states. [2022-02-20 04:01:57,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 04:02:46,163 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 4064927 transitions and produced 1223148 states. [2022-02-20 04:02:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 901 states. [2022-02-20 04:02:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-20 04:02:46,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-20 04:02:46,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 04:02:46,365 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-20 04:02:46,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 04:02:46,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1466656848, now seen corresponding path program 3 times [2022-02-20 04:02:46,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 04:02:46,366 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739961794] [2022-02-20 04:02:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 04:02:46,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 04:02:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 04:02:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 30036 backedges. 38 proven. 29604 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-02-20 04:02:50,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 04:02:50,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739961794] [2022-02-20 04:02:50,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739961794] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 04:02:50,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305604270] [2022-02-20 04:02:50,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-20 04:02:50,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 04:02:50,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 04:02:50,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 04:02:50,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-20 04:02:51,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 119 check-sat command(s) [2022-02-20 04:02:51,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 04:02:51,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-20 04:02:51,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 04:02:53,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-02-20 04:02:54,135 INFO L134 CoverageAnalysis]: Checked inductivity of 30036 backedges. 0 proven. 25298 refuted. 0 times theorem prover too weak. 4738 trivial. 0 not checked. [2022-02-20 04:02:54,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 04:02:55,309 INFO L353 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-02-20 04:02:55,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2022-02-20 04:02:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30036 backedges. 66 proven. 25232 refuted. 0 times theorem prover too weak. 4738 trivial. 0 not checked. [2022-02-20 04:02:55,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305604270] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 04:02:55,696 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 04:02:55,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 19, 19] total 104 [2022-02-20 04:02:55,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112870815] [2022-02-20 04:02:55,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 04:02:55,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-20 04:02:55,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 04:02:55,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-20 04:02:55,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=10709, Unknown=0, NotChecked=0, Total=10920 [2022-02-20 04:02:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 04:02:55,700 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 04:02:55,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 6.438095238095238) internal successors, (676), 104 states have internal predecessors, (676), 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) [2022-02-20 04:02:55,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 901 states. [2022-02-20 04:02:55,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 64 states. [2022-02-20 04:02:55,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.