/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-02 09:26:57,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-02 09:26:57,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-02 09:26:57,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-02 09:26:58,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-02 09:26:58,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-02 09:26:58,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-02 09:26:58,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-02 09:26:58,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-02 09:26:58,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-02 09:26:58,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-02 09:26:58,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-02 09:26:58,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-02 09:26:58,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-02 09:26:58,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-02 09:26:58,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-02 09:26:58,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-02 09:26:58,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-02 09:26:58,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-02 09:26:58,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-02 09:26:58,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf [2022-03-02 09:26:58,053 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-02 09:26:58,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-02 09:26:58,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-02 09:26:58,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-02 09:26:58,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-02 09:26:58,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-02 09:26:58,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-02 09:26:58,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-02 09:26:58,055 INFO L138 SettingsManager]: * Use SBE=true [2022-03-02 09:26:58,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-02 09:26:58,055 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-02 09:26:58,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-02 09:26:58,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-02 09:26:58,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-02 09:26:58,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-02 09:26:58,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-02 09:26:58,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-02 09:26:58,056 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-02 09:26:58,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-02 09:26:58,056 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-02 09:26:58,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-02 09:26:58,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-02 09:26:58,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-02 09:26:58,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-02 09:26:58,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-02 09:26:58,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 09:26:58,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-02 09:26:58,059 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-02 09:26:58,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-02 09:26:58,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-02 09:26:58,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-02 09:26:58,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-02 09:26:58,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-02 09:26:58,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-02 09:26:58,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-02 09:26:58,060 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-02 09:26:58,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-02 09:26:58,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-02 09:26:58,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-02 09:26:58,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-02 09:26:58,247 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-02 09:26:58,247 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-02 09:26:58,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-4.wvr.bpl [2022-03-02 09:26:58,248 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/unroll-4.wvr.bpl' [2022-03-02 09:26:58,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-02 09:26:58,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-02 09:26:58,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-02 09:26:58,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-02 09:26:58,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-02 09:26:58,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,302 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-02 09:26:58,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-02 09:26:58,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-02 09:26:58,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-02 09:26:58,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-02 09:26:58,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-02 09:26:58,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-02 09:26:58,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-02 09:26:58,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-02 09:26:58,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/1) ... [2022-03-02 09:26:58,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-02 09:26:58,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:26:58,357 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) [2022-03-02 09:26:58,380 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 [2022-03-02 09:26:58,389 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-02 09:26:58,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-02 09:26:58,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-02 09:26:58,389 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-02 09:26:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-02 09:26:58,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-02 09:26:58,390 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-02 09:26:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-02 09:26:58,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-02 09:26:58,390 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-02 09:26:58,422 INFO L234 CfgBuilder]: Building ICFG [2022-03-02 09:26:58,423 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-02 09:26:58,489 INFO L275 CfgBuilder]: Performing block encoding [2022-03-02 09:26:58,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-02 09:26:58,519 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-02 09:26:58,520 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-03-02 09:26:58,520 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2022-03-02 09:26:58,521 INFO L202 PluginConnector]: Adding new model unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 09:26:58 BoogieIcfgContainer [2022-03-02 09:26:58,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-02 09:26:58,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-02 09:26:58,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-02 09:26:58,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-02 09:26:58,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.03 09:26:58" (1/2) ... [2022-03-02 09:26:58,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@876bcb3 and model type unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.03 09:26:58, skipping insertion in model container [2022-03-02 09:26:58,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.03 09:26:58" (2/2) ... [2022-03-02 09:26:58,534 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.bpl [2022-03-02 09:26:58,538 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-02 09:26:58,538 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-02 09:26:58,538 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-02 09:26:58,539 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-02 09:26:58,591 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-02 09:26:58,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-02 09:26:58,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:26:58,634 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) [2022-03-02 09:26:58,642 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 [2022-03-02 09:26:58,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-02 09:26:58,678 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-02 09:26:58,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-02 09:26:58,719 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 16 transitions and produced 17 states. [2022-03-02 09:26:58,720 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:26:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:26:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1740926187, now seen corresponding path program 1 times [2022-03-02 09:26:58,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:26:58,731 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196517020] [2022-03-02 09:26:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:26:58,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:26:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:26:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:26:58,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:26:58,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196517020] [2022-03-02 09:26:58,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196517020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-02 09:26:58,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-02 09:26:58,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-02 09:26:58,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944838179] [2022-03-02 09:26:58,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-02 09:26:58,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-02 09:26:58,855 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 09:26:58,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-02 09:26:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-02 09:26:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:26:58,871 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 09:26:58,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-02 09:26:58,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:26:58,894 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 22 transitions and produced 23 states. [2022-03-02 09:26:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:26:58,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-02 09:26:58,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:26:58,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:26:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1888938480, now seen corresponding path program 1 times [2022-03-02 09:26:58,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:26:58,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380989983] [2022-03-02 09:26:58,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:26:58,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:26:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:26:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:26:58,978 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:26:58,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380989983] [2022-03-02 09:26:58,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380989983] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-02 09:26:58,978 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-02 09:26:58,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-02 09:26:58,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882022365] [2022-03-02 09:26:58,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-02 09:26:58,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-02 09:26:58,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 09:26:58,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-02 09:26:58,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-02 09:26:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:26:58,981 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 09:26:58,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-03-02 09:26:58,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:26:58,981 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:26:59,020 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 30 transitions and produced 31 states. [2022-03-02 09:26:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:26:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:26:59,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-02 09:26:59,021 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:26:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:26:59,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1604412588, now seen corresponding path program 1 times [2022-03-02 09:26:59,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:26:59,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506685570] [2022-03-02 09:26:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:26:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:26:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:26:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:26:59,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:26:59,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506685570] [2022-03-02 09:26:59,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506685570] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 09:26:59,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835292954] [2022-03-02 09:26:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:26:59,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:26:59,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:26:59,080 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) [2022-03-02 09:26:59,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-02 09:26:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:26:59,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-02 09:26:59,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 09:26:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:26:59,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 09:26:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:26:59,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835292954] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 09:26:59,201 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 09:26:59,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-03-02 09:26:59,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362297598] [2022-03-02 09:26:59,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 09:26:59,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-02 09:26:59,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 09:26:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-02 09:26:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-02 09:26:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:26:59,203 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 09:26:59,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-03-02 09:26:59,203 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:26:59,203 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:26:59,203 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:26:59,251 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 33 transitions and produced 34 states. [2022-03-02 09:26:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:26:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:26:59,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:26:59,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-02 09:26:59,462 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,SelfDestructingSolverStorable2 [2022-03-02 09:26:59,463 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:26:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:26:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1825892753, now seen corresponding path program 1 times [2022-03-02 09:26:59,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:26:59,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833258432] [2022-03-02 09:26:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:26:59,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:26:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:26:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-02 09:26:59,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:26:59,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833258432] [2022-03-02 09:26:59,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833258432] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 09:26:59,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438168457] [2022-03-02 09:26:59,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:26:59,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:26:59,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:26:59,516 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) [2022-03-02 09:26:59,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-02 09:26:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:26:59,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-02 09:26:59,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 09:26:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-02 09:26:59,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 09:26:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-02 09:26:59,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438168457] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 09:26:59,619 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 09:26:59,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-03-02 09:26:59,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629191632] [2022-03-02 09:26:59,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 09:26:59,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-02 09:26:59,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 09:26:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-02 09:26:59,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-02 09:26:59,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:26:59,621 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 09:26:59,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-03-02 09:26:59,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:26:59,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:26:59,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:26:59,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:26:59,682 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 41 transitions and produced 40 states. [2022-03-02 09:26:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:26:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:26:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:26:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:26:59,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-02 09:26:59,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:26:59,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:26:59,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:26:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash -585926287, now seen corresponding path program 2 times [2022-03-02 09:26:59,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:26:59,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276360758] [2022-03-02 09:26:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:26:59,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:26:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:26:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-02 09:26:59,971 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:26:59,971 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276360758] [2022-03-02 09:26:59,972 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276360758] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 09:26:59,972 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257200339] [2022-03-02 09:26:59,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-02 09:26:59,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:26:59,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:26:59,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 09:26:59,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-02 09:27:00,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-02 09:27:00,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 09:27:00,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-02 09:27:00,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 09:27:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-02 09:27:00,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 09:27:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-02 09:27:00,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257200339] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 09:27:00,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 09:27:00,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-03-02 09:27:00,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407134918] [2022-03-02 09:27:00,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 09:27:00,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-02 09:27:00,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 09:27:00,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-02 09:27:00,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-02 09:27:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:00,131 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 09:27:00,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 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) [2022-03-02 09:27:00,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:00,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:00,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:00,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:00,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:00,185 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 45 transitions and produced 43 states. [2022-03-02 09:27:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-02 09:27:00,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-02 09:27:00,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:27:00,399 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:27:00,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:27:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1880470992, now seen corresponding path program 3 times [2022-03-02 09:27:00,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:27:00,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532396940] [2022-03-02 09:27:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:27:00,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:27:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:27:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:00,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:27:00,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532396940] [2022-03-02 09:27:00,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532396940] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 09:27:00,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512477901] [2022-03-02 09:27:00,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-02 09:27:00,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:27:00,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:27:00,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 09:27:00,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-02 09:27:00,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-02 09:27:00,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 09:27:00,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-02 09:27:00,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 09:27:00,614 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-02 09:27:00,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2022-03-02 09:27:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:00,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 09:27:00,897 INFO L353 Elim1Store]: treesize reduction 20, result has 91.1 percent of original size [2022-03-02 09:27:00,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 19 treesize of output 232 [2022-03-02 09:27:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:07,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512477901] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 09:27:07,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 09:27:07,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 14 [2022-03-02 09:27:07,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169925608] [2022-03-02 09:27:07,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 09:27:07,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-02 09:27:07,581 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 09:27:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-02 09:27:07,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-02 09:27:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:07,582 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 09:27:07,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 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) [2022-03-02 09:27:07,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:07,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:07,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:07,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:07,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-02 09:27:07,582 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:07,692 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 51 transitions and produced 49 states. [2022-03-02 09:27:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-02 09:27:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-02 09:27:07,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-02 09:27:07,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:27:07,902 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:27:07,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:27:07,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1858016821, now seen corresponding path program 4 times [2022-03-02 09:27:07,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:27:07,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690015726] [2022-03-02 09:27:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:27:07,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:27:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:27:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:07,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:27:07,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690015726] [2022-03-02 09:27:07,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690015726] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 09:27:07,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926456830] [2022-03-02 09:27:07,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-02 09:27:07,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:27:07,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:27:07,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 09:27:07,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-02 09:27:07,979 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-02 09:27:07,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 09:27:07,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-02 09:27:07,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 09:27:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:08,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 09:27:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:08,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926456830] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 09:27:08,102 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 09:27:08,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-03-02 09:27:08,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110587072] [2022-03-02 09:27:08,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 09:27:08,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-02 09:27:08,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 09:27:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-02 09:27:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2022-03-02 09:27:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:08,103 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 09:27:08,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 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) [2022-03-02 09:27:08,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:08,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:08,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:08,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:08,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-02 09:27:08,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-02 09:27:08,104 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:08,234 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 68 transitions and produced 64 states. [2022-03-02 09:27:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-02 09:27:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-02 09:27:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-02 09:27:08,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-02 09:27:08,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:27:08,444 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:27:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:27:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash 938316113, now seen corresponding path program 5 times [2022-03-02 09:27:08,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:27:08,445 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88108249] [2022-03-02 09:27:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:27:08,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:27:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:27:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:08,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:27:08,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88108249] [2022-03-02 09:27:08,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88108249] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 09:27:08,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586550290] [2022-03-02 09:27:08,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-02 09:27:08,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:27:08,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:27:08,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 09:27:08,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-02 09:27:08,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-02 09:27:08,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 09:27:08,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-02 09:27:08,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 09:27:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:08,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 09:27:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:08,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586550290] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 09:27:08,645 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 09:27:08,645 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-03-02 09:27:08,645 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712215610] [2022-03-02 09:27:08,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 09:27:08,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-02 09:27:08,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 09:27:08,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-02 09:27:08,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-02 09:27:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:08,646 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 09:27:08,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 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) [2022-03-02 09:27:08,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:08,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:08,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:08,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:08,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-02 09:27:08,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-02 09:27:08,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-02 09:27:08,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:08,778 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 71 transitions and produced 66 states. [2022-03-02 09:27:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-02 09:27:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-02 09:27:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-02 09:27:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-02 09:27:08,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-02 09:27:08,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:27:08,982 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:27:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:27:08,982 INFO L85 PathProgramCache]: Analyzing trace with hash -953896140, now seen corresponding path program 6 times [2022-03-02 09:27:08,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:27:08,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569935901] [2022-03-02 09:27:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:27:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:27:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:27:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-02 09:27:09,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:27:09,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569935901] [2022-03-02 09:27:09,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569935901] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 09:27:09,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306788949] [2022-03-02 09:27:09,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-02 09:27:09,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:27:09,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:27:09,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 09:27:09,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-02 09:27:09,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-02 09:27:09,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-02 09:27:09,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-02 09:27:09,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 09:27:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-02 09:27:09,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 09:27:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-02 09:27:09,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306788949] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-02 09:27:09,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-02 09:27:09,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2022-03-02 09:27:09,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808307931] [2022-03-02 09:27:09,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-02 09:27:09,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-02 09:27:09,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-02 09:27:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-02 09:27:09,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-03-02 09:27:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:09,252 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-02 09:27:09,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 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) [2022-03-02 09:27:09,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:09,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:09,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:09,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:09,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-03-02 09:27:09,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-03-02 09:27:09,252 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-03-02 09:27:09,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-03-02 09:27:09,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-02 09:27:09,478 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 83 transitions and produced 74 states. [2022-03-02 09:27:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-02 09:27:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-02 09:27:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-02 09:27:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-02 09:27:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-02 09:27:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-02 09:27:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-02 09:27:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-02 09:27:09,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-02 09:27:09,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-02 09:27:09,679 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-02 09:27:09,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-02 09:27:09,680 INFO L85 PathProgramCache]: Analyzing trace with hash 700308981, now seen corresponding path program 7 times [2022-03-02 09:27:09,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-02 09:27:09,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182080628] [2022-03-02 09:27:09,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-02 09:27:09,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-02 09:27:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:27:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:09,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-02 09:27:09,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182080628] [2022-03-02 09:27:09,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182080628] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-02 09:27:09,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814208439] [2022-03-02 09:27:09,755 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-02 09:27:09,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-02 09:27:09,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-02 09:27:09,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-02 09:27:09,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-02 09:27:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-02 09:27:09,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-02 09:27:09,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-02 09:27:10,007 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-02 09:27:10,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 39 treesize of output 252 [2022-03-02 09:27:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-02 09:27:13,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-02 09:27:15,132 INFO L353 Elim1Store]: treesize reduction 40, result has 95.8 percent of original size [2022-03-02 09:27:15,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 30 new quantified variables, introduced 120 case distinctions, treesize of input 35 treesize of output 980 Received shutdown request... [2022-03-02 09:41:05,217 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-03-02 09:41:05,219 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-02 09:41:05,223 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-02 09:41:05,223 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-02 09:41:05,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-02 09:41:05,238 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-02 09:41:05,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-02 09:41:05,420 WARN L594 AbstractCegarLoop]: Verification canceled: while PartialOrderCegarLoop was analyzing trace of length 20 with TraceHistMax 8,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 9ms.. [2022-03-02 09:41:05,422 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-02 09:41:05,422 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-02 09:41:05,426 INFO L732 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1] [2022-03-02 09:41:05,427 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-02 09:41:05,427 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-02 09:41:05,429 INFO L202 PluginConnector]: Adding new model unroll-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.03 09:41:05 BasicIcfg [2022-03-02 09:41:05,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-02 09:41:05,429 INFO L158 Benchmark]: Toolchain (without parser) took 847153.52ms. Allocated memory was 203.4MB in the beginning and 1.1GB in the end (delta: 916.5MB). Free memory was 168.1MB in the beginning and 769.9MB in the end (delta: -601.8MB). Peak memory consumption was 677.4MB. Max. memory is 8.0GB. [2022-03-02 09:41:05,429 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 203.4MB. Free memory is still 169.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-02 09:41:05,429 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.60ms. Allocated memory is still 203.4MB. Free memory was 167.9MB in the beginning and 166.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-02 09:41:05,430 INFO L158 Benchmark]: Boogie Preprocessor took 13.26ms. Allocated memory is still 203.4MB. Free memory was 166.4MB in the beginning and 165.6MB in the end (delta: 846.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-02 09:41:05,430 INFO L158 Benchmark]: RCFGBuilder took 202.62ms. Allocated memory is still 203.4MB. Free memory was 165.4MB in the beginning and 155.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-02 09:41:05,430 INFO L158 Benchmark]: TraceAbstraction took 846906.50ms. Allocated memory was 203.4MB in the beginning and 1.1GB in the end (delta: 916.5MB). Free memory was 154.6MB in the beginning and 769.9MB in the end (delta: -615.3MB). Peak memory consumption was 663.7MB. Max. memory is 8.0GB. [2022-03-02 09:41:05,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09ms. Allocated memory is still 203.4MB. Free memory is still 169.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.60ms. Allocated memory is still 203.4MB. Free memory was 167.9MB in the beginning and 166.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.26ms. Allocated memory is still 203.4MB. Free memory was 166.4MB in the beginning and 165.6MB in the end (delta: 846.8kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 202.62ms. Allocated memory is still 203.4MB. Free memory was 165.4MB in the beginning and 155.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 846906.50ms. Allocated memory was 203.4MB in the beginning and 1.1GB in the end (delta: 916.5MB). Free memory was 154.6MB in the beginning and 769.9MB in the end (delta: -615.3MB). Peak memory consumption was 663.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PartialOrderCegarLoop was analyzing trace of length 20 with TraceHistMax 8,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 9ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 20 with TraceHistMax 8,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 9ms.. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PartialOrderCegarLoop was analyzing trace of length 20 with TraceHistMax 8,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 9ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 846.8s, OverallIterations: 10, TraceHistogramMax: 0, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 1420 SizeOfPredicates, 16 NumberOfNonLiveVariables, 337 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 52/205 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown