/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/parallel/misc-3-extended.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 18:51:50,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 18:51:50,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 18:51:50,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 18:51:50,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-09 18:51:50,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-09 18:51:50,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-09 18:51:50,167 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 [2022-02-09 18:51:50,194 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 18:51:50,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 18:51:50,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 18:51:50,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 18:51:50,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 18:51:50,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 18:51:50,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 18:51:50,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 18:51:50,196 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 18:51:50,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 18:51:50,197 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 18:51:50,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 18:51:50,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 18:51:50,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 18:51:50,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 18:51:50,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 18:51:50,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 18:51:50,198 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 18:51:50,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 18:51:50,198 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 18:51:50,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 18:51:50,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 18:51:50,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 18:51:50,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 18:51:50,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 18:51:50,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 18:51:50,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 18:51:50,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 18:51:50,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 18:51:50,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 18:51:50,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 18:51:50,200 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 18:51:50,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-09 18:51:50,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 18:51:50,200 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-09 18:51:50,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 18:51:50,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 18:51:50,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 18:51:50,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 18:51:50,393 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 18:51:50,394 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 18:51:50,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3-extended.wvr.bpl [2022-02-09 18:51:50,395 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3-extended.wvr.bpl' [2022-02-09 18:51:50,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 18:51:50,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 18:51:50,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 18:51:50,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 18:51:50,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 18:51:50,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,440 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 18:51:50,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 18:51:50,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 18:51:50,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 18:51:50,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 18:51:50,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 18:51:50,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 18:51:50,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 18:51:50,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 18:51:50,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/1) ... [2022-02-09 18:51:50,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 18:51:50,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:51:50,493 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) [2022-02-09 18:51:50,498 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 [2022-02-09 18:51:50,522 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-09 18:51:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-09 18:51:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-09 18:51:50,523 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-09 18:51:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-09 18:51:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-09 18:51:50,523 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 18:51:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 18:51:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 18:51:50,523 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-09 18:51:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-09 18:51:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-09 18:51:50,524 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 18:51:50,564 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 18:51:50,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 18:51:50,677 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 18:51:50,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 18:51:50,683 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 18:51:50,684 INFO L202 PluginConnector]: Adding new model misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 06:51:50 BoogieIcfgContainer [2022-02-09 18:51:50,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 18:51:50,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 18:51:50,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 18:51:50,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 18:51:50,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:51:50" (1/2) ... [2022-02-09 18:51:50,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb3588f and model type misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 06:51:50, skipping insertion in model container [2022-02-09 18:51:50,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 06:51:50" (2/2) ... [2022-02-09 18:51:50,694 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-3-extended.wvr.bpl [2022-02-09 18:51:50,698 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 18:51:50,698 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 18:51:50,698 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 18:51:50,698 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 18:51:50,746 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-09 18:51:50,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:51:50,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:51:50,867 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) [2022-02-09 18:51:50,887 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 [2022-02-09 18:51:50,926 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:51:50,935 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 [2022-02-09 18:51:50,935 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-09 18:51:50,945 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 50 transitions, 124 flow [2022-02-09 18:51:51,043 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 914 states, 913 states have (on average 3.895947426067908) internal successors, (3557), 913 states have internal predecessors, (3557), 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) [2022-02-09 18:51:51,202 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 4943 transitions and produced 4459 states. [2022-02-09 18:51:51,205 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 18:51:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:51:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash 525853269, now seen corresponding path program 1 times [2022-02-09 18:51:51,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:51:51,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325562151] [2022-02-09 18:51:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:51:51,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:51:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:51:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 129867 backedges. 1022 proven. 0 refuted. 0 times theorem prover too weak. 128845 trivial. 0 not checked. [2022-02-09 18:51:51,924 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:51:51,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325562151] [2022-02-09 18:51:51,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325562151] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 18:51:51,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 18:51:51,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 18:51:51,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479646747] [2022-02-09 18:51:51,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 18:51:51,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 18:51:51,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:51:51,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 18:51:51,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-09 18:51:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:51:51,970 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:51:51,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-02-09 18:51:51,971 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:51:52,166 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 6529 transitions and produced 6135 states. [2022-02-09 18:51:52,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 18:51:52,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 18:51:52,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 18:51:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:51:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1574869737, now seen corresponding path program 1 times [2022-02-09 18:51:52,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:51:52,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976654639] [2022-02-09 18:51:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:51:52,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:51:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:51:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 253121 backedges. 30865 proven. 0 refuted. 0 times theorem prover too weak. 222256 trivial. 0 not checked. [2022-02-09 18:51:53,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:51:53,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976654639] [2022-02-09 18:51:53,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976654639] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 18:51:53,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 18:51:53,726 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 18:51:53,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79422835] [2022-02-09 18:51:53,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 18:51:53,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-09 18:51:53,728 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:51:53,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-09 18:51:53,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-09 18:51:53,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:51:53,729 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:51:53,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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) [2022-02-09 18:51:53,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-09 18:51:53,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:51:53,886 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 7710 transitions and produced 7292 states. [2022-02-09 18:51:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 18:51:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-09 18:51:53,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 18:51:53,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-09 18:51:53,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:51:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1411283473, now seen corresponding path program 1 times [2022-02-09 18:51:53,889 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:51:53,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320119256] [2022-02-09 18:51:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:51:53,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:51:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:51:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 322252 backedges. 137980 proven. 0 refuted. 0 times theorem prover too weak. 184272 trivial. 0 not checked. [2022-02-09 18:51:54,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:51:54,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320119256] [2022-02-09 18:51:54,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320119256] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 18:51:54,667 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 18:51:54,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-09 18:51:54,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044263146] [2022-02-09 18:51:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 18:51:54,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 18:51:54,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:51:54,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 18:51:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 18:51:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:51:54,669 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:51:54,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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) [2022-02-09 18:51:54,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-09 18:51:54,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-09 18:51:54,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.