/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/horseshoe.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-04 05:46:38,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 05:46:38,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 05:46:38,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-04 05:46:38,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-04 05:46:38,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-04 05:46:38,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-04 05:46:38,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-04 05:46:38,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-04 05:46:38,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-04 05:46:38,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-04 05:46:38,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-04 05:46:38,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-04 05:46:38,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-04 05:46:38,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-04 05:46:38,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-04 05:46:38,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-04 05:46:38,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-04 05:46:38,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-04 05:46:38,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-04 05:46:38,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-04 05:46:38,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-04 05:46:38,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-04 05:46:38,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-04 05:46:38,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-04 05:46:38,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-04 05:46:38,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-04 05:46:38,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-04 05:46:38,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-04 05:46:38,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-04 05:46:38,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-04 05:46:38,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-04 05:46:38,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-04 05:46:38,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-04 05:46:38,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-04 05:46:38,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-04 05:46:38,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-04 05:46:38,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-04 05:46:38,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-04 05:46:38,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-04 05:46:38,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-04 05:46:38,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithDepranks-Lazy-NoForkJoinOpt.epf [2022-03-04 05:46:38,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 05:46:38,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 05:46:38,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 05:46:38,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 05:46:38,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 05:46:38,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 05:46:38,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 05:46:38,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 05:46:38,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 05:46:38,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 05:46:38,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 05:46:38,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 05:46:38,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 05:46:38,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 05:46:38,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 05:46:38,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 05:46:38,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 05:46:38,195 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-04 05:46:38,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 05:46:38,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 05:46:38,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 05:46:38,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 05:46:38,392 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-04 05:46:38,393 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-04 05:46:38,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/horseshoe.wvr.bpl [2022-03-04 05:46:38,394 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/horseshoe.wvr.bpl' [2022-03-04 05:46:38,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 05:46:38,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-04 05:46:38,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 05:46:38,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 05:46:38,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 05:46:38,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,439 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-04 05:46:38,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 05:46:38,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 05:46:38,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 05:46:38,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 05:46:38,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 05:46:38,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 05:46:38,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 05:46:38,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 05:46:38,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/1) ... [2022-03-04 05:46:38,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 05:46:38,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:46:38,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-04 05:46:38,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-04 05:46:38,518 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-04 05:46:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-04 05:46:38,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-04 05:46:38,518 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-04 05:46:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-04 05:46:38,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-04 05:46:38,519 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-04 05:46:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 05:46:38,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 05:46:38,519 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-04 05:46:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-04 05:46:38,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-04 05:46:38,520 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-04 05:46:38,556 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 05:46:38,557 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 05:46:38,683 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 05:46:38,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 05:46:38,697 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-04 05:46:38,699 INFO L202 PluginConnector]: Adding new model horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 05:46:38 BoogieIcfgContainer [2022-03-04 05:46:38,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 05:46:38,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 05:46:38,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 05:46:38,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 05:46:38,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 05:46:38" (1/2) ... [2022-03-04 05:46:38,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3205576e and model type horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 05:46:38, skipping insertion in model container [2022-03-04 05:46:38,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "horseshoe.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 05:46:38" (2/2) ... [2022-03-04 05:46:38,704 INFO L111 eAbstractionObserver]: Analyzing ICFG horseshoe.wvr.bpl [2022-03-04 05:46:38,708 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 05:46:38,708 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 05:46:38,708 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-04 05:46:38,708 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 05:46:38,753 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-04 05:46:38,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 05:46:38,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:46:38,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-04 05:46:38,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-04 05:46:38,813 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 05:46:38,824 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=false, mMcrOverapproximateWrwc=true [2022-03-04 05:46:38,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-04 05:46:40,521 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 257054 transitions and produced 86477 states. [2022-03-04 05:46:40,523 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-04 05:46:40,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 05:46:40,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1891996230, now seen corresponding path program 1 times [2022-03-04 05:46:40,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 05:46:40,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091774528] [2022-03-04 05:46:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 05:46:40,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 05:46:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 05:46:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 31 proven. 9538 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-03-04 05:46:42,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 05:46:42,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091774528] [2022-03-04 05:46:42,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091774528] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 05:46:42,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853298938] [2022-03-04 05:46:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 05:46:42,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 05:46:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:46:42,661 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) [2022-03-04 05:46:42,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-04 05:46:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 05:46:42,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 114 conjunts are in the unsatisfiable core [2022-03-04 05:46:42,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 05:46:46,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-04 05:46:46,582 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-04 05:46:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 31 proven. 9538 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-03-04 05:46:46,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 05:46:48,184 INFO L353 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-03-04 05:46:48,185 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 [2022-03-04 05:46:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 31 proven. 9538 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-03-04 05:46:48,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853298938] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 05:46:48,737 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 05:46:48,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 81 [2022-03-04 05:46:48,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349652348] [2022-03-04 05:46:48,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 05:46:48,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-03-04 05:46:48,746 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 05:46:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-03-04 05:46:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=6421, Unknown=0, NotChecked=0, Total=6642 [2022-03-04 05:46:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:46:48,771 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 05:46:48,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 7.682926829268292) internal successors, (630), 81 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 05:46:48,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:46:57,676 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1022839 transitions and produced 322351 states. [2022-03-04 05:46:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-04 05:46:57,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-04 05:46:57,887 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 [2022-03-04 05:46:57,888 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-04 05:46:57,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 05:46:57,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1707702616, now seen corresponding path program 2 times [2022-03-04 05:46:57,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 05:46:57,889 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024888404] [2022-03-04 05:46:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 05:46:57,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 05:46:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 05:47:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19968 backedges. 31 proven. 19543 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-04 05:47:00,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 05:47:00,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024888404] [2022-03-04 05:47:00,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024888404] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 05:47:00,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123917852] [2022-03-04 05:47:00,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 05:47:00,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 05:47:00,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 05:47:00,155 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) [2022-03-04 05:47:00,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-04 05:47:00,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 05:47:00,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 05:47:00,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 172 conjunts are in the unsatisfiable core [2022-03-04 05:47:00,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 05:47:05,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-03-04 05:47:05,758 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-03-04 05:47:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 19968 backedges. 31 proven. 19543 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-04 05:47:05,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 05:47:08,534 INFO L353 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-03-04 05:47:08,534 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 [2022-03-04 05:47:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 19968 backedges. 31 proven. 19543 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-03-04 05:47:09,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123917852] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 05:47:09,241 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 05:47:09,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 122 [2022-03-04 05:47:09,242 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353722193] [2022-03-04 05:47:09,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 05:47:09,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-03-04 05:47:09,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 05:47:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-03-04 05:47:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=14673, Unknown=0, NotChecked=0, Total=15006 [2022-03-04 05:47:09,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 05:47:09,247 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 05:47:09,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 7.2926829268292686) internal successors, (897), 122 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-04 05:47:09,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2022-03-04 05:47:09,248 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.