/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/MirabelleConcurrentIncrement.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-20 10:48:37,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 10:48:37,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 10:48:37,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-20 10:48:37,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 10:48:37,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 10:48:37,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 10:48:37,298 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 [2022-02-20 10:48:37,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 10:48:37,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 10:48:37,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 10:48:37,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 10:48:37,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 10:48:37,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 10:48:37,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 10:48:37,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 10:48:37,316 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 10:48:37,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 10:48:37,317 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 10:48:37,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 10:48:37,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 10:48:37,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 10:48:37,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 10:48:37,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 10:48:37,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 10:48:37,317 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 10:48:37,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 10:48:37,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 10:48:37,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 10:48:37,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 10:48:37,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 10:48:37,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-20 10:48:37,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 10:48:37,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 10:48:37,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 10:48:37,319 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-20 10:48:37,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 10:48:37,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 10:48:37,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 10:48:37,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 10:48:37,320 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 10:48:37,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-20 10:48:37,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 10:48:37,320 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-20 10:48:37,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-20 10:48:37,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 10:48:37,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 10:48:37,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 10:48:37,527 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-20 10:48:37,527 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-20 10:48:37,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl [2022-02-20 10:48:37,528 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl' [2022-02-20 10:48:37,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 10:48:37,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-20 10:48:37,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 10:48:37,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 10:48:37,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 10:48:37,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,573 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-20 10:48:37,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 10:48:37,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 10:48:37,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 10:48:37,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 10:48:37,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 10:48:37,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 10:48:37,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 10:48:37,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 10:48:37,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/1) ... [2022-02-20 10:48:37,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 10:48:37,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 10:48:37,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 10:48:37,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 10:48:37,642 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-20 10:48:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 10:48:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 10:48:37,642 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T1 given in one single declaration [2022-02-20 10:48:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure T1 [2022-02-20 10:48:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure T1 [2022-02-20 10:48:37,643 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T2 given in one single declaration [2022-02-20 10:48:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure T2 [2022-02-20 10:48:37,643 INFO L138 BoogieDeclarations]: Found implementation of procedure T2 [2022-02-20 10:48:37,643 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-20 10:48:37,677 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 10:48:37,678 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 10:48:37,733 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 10:48:37,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 10:48:37,737 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 10:48:37,739 INFO L202 PluginConnector]: Adding new model MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 10:48:37 BoogieIcfgContainer [2022-02-20 10:48:37,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 10:48:37,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 10:48:37,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 10:48:37,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 10:48:37,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 10:48:37" (1/2) ... [2022-02-20 10:48:37,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7438c70f and model type MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 10:48:37, skipping insertion in model container [2022-02-20 10:48:37,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 10:48:37" (2/2) ... [2022-02-20 10:48:37,744 INFO L111 eAbstractionObserver]: Analyzing ICFG MirabelleConcurrentIncrement.bpl [2022-02-20 10:48:37,748 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-20 10:48:37,748 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 10:48:37,748 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 10:48:37,748 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-20 10:48:37,766 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-20 10:48:37,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-20 10:48:37,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 10:48:37,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-20 10:48:37,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-20 10:48:37,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 10:48:37,835 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-02-20 10:48:37,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-20 10:48:38,075 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 149 transitions and produced 135 states. [2022-02-20 10:48:38,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 10:48:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 10:48:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash 27574066, now seen corresponding path program 1 times [2022-02-20 10:48:38,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 10:48:38,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948236298] [2022-02-20 10:48:38,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 10:48:38,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 10:48:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 10:48:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 35 proven. 244 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-02-20 10:48:38,450 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 10:48:38,450 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948236298] [2022-02-20 10:48:38,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948236298] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 10:48:38,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372323636] [2022-02-20 10:48:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 10:48:38,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 10:48:38,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 10:48:38,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 10:48:38,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-20 10:48:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 10:48:38,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-20 10:48:38,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 10:48:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 228 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-20 10:48:38,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 10:48:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 228 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-20 10:48:39,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372323636] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 10:48:39,128 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 10:48:39,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 35 [2022-02-20 10:48:39,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034445097] [2022-02-20 10:48:39,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 10:48:39,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-20 10:48:39,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 10:48:39,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-20 10:48:39,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2022-02-20 10:48:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 10:48:39,159 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 10:48:39,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.888888888888889) internal successors, (104), 35 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 10:48:39,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 10:48:39,940 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 223 transitions and produced 191 states. [2022-02-20 10:48:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-20 10:48:39,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-20 10:48:40,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-02-20 10:48:40,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 10:48:40,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 10:48:40,157 INFO L85 PathProgramCache]: Analyzing trace with hash 989081328, now seen corresponding path program 2 times [2022-02-20 10:48:40,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 10:48:40,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416388339] [2022-02-20 10:48:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 10:48:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 10:48:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 10:48:40,507 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 439 proven. 169 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-02-20 10:48:40,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 10:48:40,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416388339] [2022-02-20 10:48:40,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416388339] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 10:48:40,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196076875] [2022-02-20 10:48:40,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-20 10:48:40,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 10:48:40,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 10:48:40,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 10:48:40,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-20 10:48:40,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-20 10:48:40,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 10:48:40,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-20 10:48:40,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 10:48:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 439 proven. 169 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-02-20 10:48:40,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 10:48:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 439 proven. 169 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-02-20 10:48:40,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196076875] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 10:48:40,931 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 10:48:40,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 30 [2022-02-20 10:48:40,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62903891] [2022-02-20 10:48:40,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 10:48:40,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-20 10:48:40,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 10:48:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-20 10:48:40,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2022-02-20 10:48:40,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 10:48:40,936 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 10:48:40,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 10:48:40,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2022-02-20 10:48:40,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 10:48:41,453 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 328 transitions and produced 281 states. [2022-02-20 10:48:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-20 10:48:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-20 10:48:41,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-20 10:48:41,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 10:48:41,672 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 10:48:41,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 10:48:41,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1130021580, now seen corresponding path program 3 times [2022-02-20 10:48:41,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 10:48:41,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593575287] [2022-02-20 10:48:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 10:48:41,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 10:48:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 10:48:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1460 backedges. 625 proven. 827 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-20 10:48:42,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 10:48:42,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593575287] [2022-02-20 10:48:42,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593575287] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 10:48:42,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097598806] [2022-02-20 10:48:42,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-20 10:48:42,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 10:48:42,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 10:48:42,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 10:48:42,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-20 10:48:42,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-20 10:48:42,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 10:48:42,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-20 10:48:42,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 10:48:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1460 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-02-20 10:48:42,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 10:48:42,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097598806] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 10:48:42,913 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-20 10:48:42,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [49] total 55 [2022-02-20 10:48:42,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490525269] [2022-02-20 10:48:42,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 10:48:42,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-20 10:48:42,913 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 10:48:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-20 10:48:42,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=2325, Unknown=0, NotChecked=0, Total=2970 [2022-02-20 10:48:42,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 10:48:42,915 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 10:48:42,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 10:48:42,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2022-02-20 10:48:42,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-02-20 10:48:42,916 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 10:49:06,791 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 32071 transitions and produced 23933 states. [2022-02-20 10:49:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-20 10:49:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-20 10:49:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-20 10:49:06,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-20 10:49:07,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 10:49:07,013 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 10:49:07,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 10:49:07,014 INFO L85 PathProgramCache]: Analyzing trace with hash 529088322, now seen corresponding path program 1 times [2022-02-20 10:49:07,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 10:49:07,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820046936] [2022-02-20 10:49:07,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 10:49:07,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 10:49:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 10:49:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 52925 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52925 trivial. 0 not checked. [2022-02-20 10:49:07,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 10:49:07,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820046936] [2022-02-20 10:49:07,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820046936] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 10:49:07,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 10:49:07,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 10:49:07,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699467033] [2022-02-20 10:49:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 10:49:07,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 10:49:07,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 10:49:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 10:49:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 10:49:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 10:49:07,366 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 10:49:07,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 10:49:07,367 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2022-02-20 10:49:07,367 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-02-20 10:49:07,367 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-02-20 10:49:07,368 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 10:49:28,228 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 30751 transitions and produced 22669 states. [2022-02-20 10:49:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-20 10:49:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-20 10:49:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-20 10:49:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 10:49:28,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-20 10:49:28,229 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 10:49:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 10:49:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash 529089252, now seen corresponding path program 4 times [2022-02-20 10:49:28,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 10:49:28,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516695344] [2022-02-20 10:49:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 10:49:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 10:49:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 10:49:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 52925 backedges. 7610 proven. 41672 refuted. 0 times theorem prover too weak. 3643 trivial. 0 not checked. [2022-02-20 10:49:30,356 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 10:49:30,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516695344] [2022-02-20 10:49:30,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516695344] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 10:49:30,356 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714767819] [2022-02-20 10:49:30,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-20 10:49:30,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 10:49:30,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 10:49:30,372 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) [2022-02-20 10:49:30,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-20 10:49:30,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-20 10:49:30,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 10:49:30,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 327 conjunts are in the unsatisfiable core [2022-02-20 10:49:30,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 10:49:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 52925 backedges. 8439 proven. 40437 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2022-02-20 10:49:32,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 10:49:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 52925 backedges. 8439 proven. 40437 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2022-02-20 10:49:33,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714767819] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 10:49:33,241 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 10:49:33,241 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 32, 32] total 62 [2022-02-20 10:49:33,241 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235898343] [2022-02-20 10:49:33,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 10:49:33,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-02-20 10:49:33,242 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 10:49:33,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-02-20 10:49:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1152, Invalid=2754, Unknown=0, NotChecked=0, Total=3906 [2022-02-20 10:49:33,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 10:49:33,244 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 10:49:33,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.4126984126984126) internal successors, (215), 62 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 10:49:33,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2022-02-20 10:49:33,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 44 states. [2022-02-20 10:49:33,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-02-20 10:49:33,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-20 10:49:33,245 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.