/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/prod-cons3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 05:50:19,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 05:50:19,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 05:50:19,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-16 05:50:19,209 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.epf [2022-02-16 05:50:19,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 05:50:19,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 05:50:19,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 05:50:19,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 05:50:19,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 05:50:19,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 05:50:19,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 05:50:19,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 05:50:19,238 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 05:50:19,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 05:50:19,239 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 05:50:19,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 05:50:19,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 05:50:19,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 05:50:19,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 05:50:19,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 05:50:19,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 05:50:19,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 05:50:19,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 05:50:19,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 05:50:19,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 05:50:19,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 05:50:19,241 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 05:50:19,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-16 05:50:19,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 05:50:19,241 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-16 05:50:19,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 05:50:19,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 05:50:19,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 05:50:19,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 05:50:19,455 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-16 05:50:19,456 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-16 05:50:19,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/prod-cons3.wvr.bpl [2022-02-16 05:50:19,457 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/prod-cons3.wvr.bpl' [2022-02-16 05:50:19,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 05:50:19,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-16 05:50:19,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 05:50:19,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 05:50:19,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 05:50:19,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,499 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-16 05:50:19,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 05:50:19,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 05:50:19,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 05:50:19,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 05:50:19,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 05:50:19,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 05:50:19,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 05:50:19,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 05:50:19,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/1) ... [2022-02-16 05:50:19,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 05:50:19,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 05:50:19,550 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 05:50:19,554 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 05:50:19,596 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-16 05:50:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-16 05:50:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-16 05:50:19,596 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-16 05:50:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-16 05:50:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-16 05:50:19,597 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-16 05:50:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 05:50:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 05:50:19,597 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-16 05:50:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-16 05:50:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-16 05:50:19,598 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-02-16 05:50:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-02-16 05:50:19,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-02-16 05:50:19,599 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 05:50:19,645 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 05:50:19,646 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 05:50:19,764 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 05:50:19,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 05:50:19,778 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-16 05:50:19,780 INFO L202 PluginConnector]: Adding new model prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:50:19 BoogieIcfgContainer [2022-02-16 05:50:19,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 05:50:19,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 05:50:19,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 05:50:19,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 05:50:19,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 05:50:19" (1/2) ... [2022-02-16 05:50:19,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6411b4 and model type prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:50:19, skipping insertion in model container [2022-02-16 05:50:19,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "prod-cons3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:50:19" (2/2) ... [2022-02-16 05:50:19,794 INFO L111 eAbstractionObserver]: Analyzing ICFG prod-cons3.wvr.bpl [2022-02-16 05:50:19,797 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 05:50:19,797 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 05:50:19,797 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 05:50:19,797 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 05:50:19,827 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-16 05:50:19,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 05:50:19,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 05:50:19,863 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 05:50:19,864 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 05:50:19,890 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 05:50:19,901 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 05:50:19,901 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-16 05:50:19,912 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 40 transitions, 112 flow [2022-02-16 05:50:20,013 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 753 states, 752 states have (on average 3.636968085106383) internal successors, (2735), 752 states have internal predecessors, (2735), 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 05:50:20,095 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1388 transitions and produced 789 states. [2022-02-16 05:50:20,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-16 05:50:20,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 05:50:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1328817116, now seen corresponding path program 1 times [2022-02-16 05:50:20,110 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 05:50:20,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178732284] [2022-02-16 05:50:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 05:50:20,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 05:50:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 05:50:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-02-16 05:50:20,318 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 05:50:20,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178732284] [2022-02-16 05:50:20,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178732284] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 05:50:20,319 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 05:50:20,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 05:50:20,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876274631] [2022-02-16 05:50:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 05:50:20,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 05:50:20,322 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 05:50:20,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 05:50:20,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 05:50:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 05:50:20,379 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 05:50:20,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 05:50:20,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 05:50:21,263 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 63677 transitions and produced 20668 states. [2022-02-16 05:50:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 05:50:21,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 05:50:21,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-16 05:50:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 05:50:21,269 INFO L85 PathProgramCache]: Analyzing trace with hash 84758677, now seen corresponding path program 2 times [2022-02-16 05:50:21,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 05:50:21,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234154976] [2022-02-16 05:50:21,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 05:50:21,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 05:50:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 05:50:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1701 backedges. 1141 proven. 524 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-02-16 05:50:21,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 05:50:21,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234154976] [2022-02-16 05:50:21,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234154976] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 05:50:21,783 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53887798] [2022-02-16 05:50:21,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-16 05:50:21,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 05:50:21,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 05:50:21,785 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) [2022-02-16 05:50:21,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-16 05:50:21,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-16 05:50:21,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 05:50:21,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-16 05:50:21,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 05:50:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1701 backedges. 1013 proven. 524 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-02-16 05:50:22,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 05:50:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1701 backedges. 1013 proven. 524 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-02-16 05:50:22,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53887798] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 05:50:22,721 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 05:50:22,721 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15, 15] total 23 [2022-02-16 05:50:22,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394388377] [2022-02-16 05:50:22,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 05:50:22,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-16 05:50:22,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 05:50:22,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-16 05:50:22,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=260, Unknown=0, NotChecked=0, Total=506 [2022-02-16 05:50:22,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 05:50:22,724 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 05:50:22,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.3478260869565215) internal successors, (169), 23 states have internal predecessors, (169), 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 05:50:22,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 05:50:22,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 05:50:22,803 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1114 transitions and produced 987 states. [2022-02-16 05:50:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 05:50:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-16 05:50:22,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-16 05:50:23,021 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,SelfDestructingSolverStorable1 [2022-02-16 05:50:23,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-16 05:50:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 05:50:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash 52612533, now seen corresponding path program 3 times [2022-02-16 05:50:23,023 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 05:50:23,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168206960] [2022-02-16 05:50:23,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 05:50:23,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 05:50:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 05:50:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 119 proven. 2131 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-02-16 05:50:26,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 05:50:26,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168206960] [2022-02-16 05:50:26,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168206960] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 05:50:26,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222558626] [2022-02-16 05:50:26,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-16 05:50:26,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 05:50:26,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 05:50:26,322 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 05:50:26,323 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 05:50:26,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-02-16 05:50:26,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 05:50:26,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 88 conjunts are in the unsatisfiable core [2022-02-16 05:50:26,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 05:50:31,786 INFO L353 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2022-02-16 05:50:31,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 109 treesize of output 65 [2022-02-16 05:50:34,742 INFO L353 Elim1Store]: treesize reduction 170, result has 0.6 percent of original size [2022-02-16 05:50:34,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 30 [2022-02-16 05:50:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 6 proven. 2124 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-02-16 05:50:34,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 05:50:37,668 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-16 05:50:37,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 106 treesize of output 410 [2022-02-16 05:51:02,080 INFO L353 Elim1Store]: treesize reduction 400, result has 46.6 percent of original size [2022-02-16 05:51:02,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 86 treesize of output 390 [2022-02-16 05:51:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 397 proven. 1739 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-02-16 05:51:33,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222558626] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 05:51:33,288 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 05:51:33,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 43, 44] total 137 [2022-02-16 05:51:33,289 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524968869] [2022-02-16 05:51:33,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 05:51:33,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-02-16 05:51:33,290 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 05:51:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-02-16 05:51:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=17597, Unknown=0, NotChecked=0, Total=18632 [2022-02-16 05:51:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 05:51:33,296 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 05:51:33,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.591240875912409) internal successors, (355), 137 states have internal predecessors, (355), 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 05:51:33,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 05:51:33,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-02-16 05:51:33,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.