/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-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/chromosome-opt-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-19 03:53:54,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-19 03:53:54,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-19 03:53:54,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-19 03:53:54,466 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-POR-NewStatesSleepPersistentFixedOrder-NoLbe.epf [2022-02-19 03:53:54,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-19 03:53:54,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-19 03:53:54,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-19 03:53:54,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-19 03:53:54,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-19 03:53:54,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-19 03:53:54,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-19 03:53:54,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-19 03:53:54,501 INFO L138 SettingsManager]: * Use SBE=true [2022-02-19 03:53:54,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-19 03:53:54,501 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-19 03:53:54,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-19 03:53:54,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-19 03:53:54,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-19 03:53:54,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-19 03:53:54,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-19 03:53:54,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-19 03:53:54,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-19 03:53:54,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-19 03:53:54,502 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-19 03:53:54,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-19 03:53:54,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-19 03:53:54,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-19 03:53:54,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-19 03:53:54,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-19 03:53:54,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 03:53:54,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-19 03:53:54,507 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-19 03:53:54,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-19 03:53:54,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-19 03:53:54,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-19 03:53:54,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-19 03:53:54,507 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-19 03:53:54,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-19 03:53:54,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-19 03:53:54,507 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-02-19 03:53:54,508 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-02-19 03:53:54,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-19 03:53:54,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-19 03:53:54,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-19 03:53:54,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-19 03:53:54,724 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-19 03:53:54,725 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-19 03:53:54,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/chromosome-opt-symm.wvr.bpl [2022-02-19 03:53:54,726 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/chromosome-opt-symm.wvr.bpl' [2022-02-19 03:53:54,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-19 03:53:54,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-19 03:53:54,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-19 03:53:54,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-19 03:53:54,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-19 03:53:54,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,772 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-19 03:53:54,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-19 03:53:54,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-19 03:53:54,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-19 03:53:54,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-19 03:53:54,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-19 03:53:54,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-19 03:53:54,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-19 03:53:54,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-19 03:53:54,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/1) ... [2022-02-19 03:53:54,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 03:53:54,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:53:54,843 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) [2022-02-19 03:53:54,849 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 [2022-02-19 03:53:54,882 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-19 03:53:54,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-19 03:53:54,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-19 03:53:54,883 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-19 03:53:54,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-19 03:53:54,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-19 03:53:54,884 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-19 03:53:54,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-19 03:53:54,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-19 03:53:54,886 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-19 03:53:54,928 INFO L234 CfgBuilder]: Building ICFG [2022-02-19 03:53:54,930 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-19 03:53:55,071 INFO L275 CfgBuilder]: Performing block encoding [2022-02-19 03:53:55,101 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-19 03:53:55,101 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-19 03:53:55,103 INFO L202 PluginConnector]: Adding new model chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:53:55 BoogieIcfgContainer [2022-02-19 03:53:55,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-19 03:53:55,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-19 03:53:55,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-19 03:53:55,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-19 03:53:55,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 03:53:54" (1/2) ... [2022-02-19 03:53:55,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3a5a13 and model type chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:53:55, skipping insertion in model container [2022-02-19 03:53:55,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:53:55" (2/2) ... [2022-02-19 03:53:55,109 INFO L111 eAbstractionObserver]: Analyzing ICFG chromosome-opt-symm.wvr.bpl [2022-02-19 03:53:55,113 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-19 03:53:55,113 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-19 03:53:55,113 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-19 03:53:55,114 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-19 03:53:55,161 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-19 03:53:55,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-19 03:53:55,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:53:55,199 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) [2022-02-19 03:53:55,215 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 [2022-02-19 03:53:55,243 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-02-19 03:53:55,248 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 [2022-02-19 03:53:55,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-19 03:53:55,360 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:53:55,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:53:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1509786571, now seen corresponding path program 1 times [2022-02-19 03:53:55,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:53:55,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199637304] [2022-02-19 03:53:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:53:55,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:53:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:53:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:53:55,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:53:55,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199637304] [2022-02-19 03:53:55,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199637304] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 03:53:55,551 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 03:53:55,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-19 03:53:55,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291949645] [2022-02-19 03:53:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 03:53:55,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-19 03:53:55,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:53:55,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-19 03:53:55,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-19 03:53:55,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:53:55,611 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:53:55,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-02-19 03:53:55,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:53:55,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:55,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-19 03:53:55,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:53:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:53:55,648 INFO L85 PathProgramCache]: Analyzing trace with hash 384368307, now seen corresponding path program 1 times [2022-02-19 03:53:55,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:53:55,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120733318] [2022-02-19 03:53:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:53:55,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:53:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:53:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-19 03:53:55,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:53:55,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120733318] [2022-02-19 03:53:55,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120733318] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 03:53:55,699 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-19 03:53:55,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-19 03:53:55,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411340139] [2022-02-19 03:53:55,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 03:53:55,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-19 03:53:55,701 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:53:55,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-19 03:53:55,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-19 03:53:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:53:55,702 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:53:55,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-02-19 03:53:55,702 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:55,702 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:53:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:55,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-19 03:53:55,739 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:53:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:53:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1069017231, now seen corresponding path program 1 times [2022-02-19 03:53:55,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:53:55,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314101334] [2022-02-19 03:53:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:53:55,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:53:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:53:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:53:56,055 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:53:56,055 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314101334] [2022-02-19 03:53:56,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314101334] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:53:56,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45390689] [2022-02-19 03:53:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:53:56,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:53:56,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:53:56,075 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) [2022-02-19 03:53:56,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-19 03:53:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:53:56,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-19 03:53:56,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:53:56,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 57 [2022-02-19 03:53:56,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-02-19 03:53:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:53:56,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 03:53:57,178 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-19 03:53:57,179 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 81 [2022-02-19 03:53:57,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2022-02-19 03:53:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:53:57,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45390689] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 03:53:57,267 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 03:53:57,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-02-19 03:53:57,267 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218036100] [2022-02-19 03:53:57,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 03:53:57,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-19 03:53:57,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:53:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-19 03:53:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-02-19 03:53:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:53:57,269 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:53:57,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 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) [2022-02-19 03:53:57,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:57,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:57,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:53:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:53:58,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-19 03:53:58,165 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 [2022-02-19 03:53:58,166 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:53:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:53:58,166 INFO L85 PathProgramCache]: Analyzing trace with hash 423040331, now seen corresponding path program 2 times [2022-02-19 03:53:58,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:53:58,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688240727] [2022-02-19 03:53:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:53:58,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:53:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:53:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:53:58,501 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:53:58,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688240727] [2022-02-19 03:53:58,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688240727] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:53:58,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715330916] [2022-02-19 03:53:58,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-19 03:53:58,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:53:58,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:53:58,503 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) [2022-02-19 03:53:58,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-19 03:53:58,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-19 03:53:58,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 03:53:58,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-19 03:53:58,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:53:58,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 73 [2022-02-19 03:53:58,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 49 [2022-02-19 03:53:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:53:59,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 03:53:59,667 INFO L353 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2022-02-19 03:53:59,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 75 [2022-02-19 03:53:59,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-19 03:53:59,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2022-02-19 03:53:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:53:59,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715330916] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 03:53:59,694 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 03:53:59,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-02-19 03:53:59,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657022809] [2022-02-19 03:53:59,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 03:53:59,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-19 03:53:59,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:53:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-19 03:53:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2022-02-19 03:53:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:53:59,696 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:53:59,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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) [2022-02-19 03:53:59,697 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:59,697 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:53:59,697 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:53:59,697 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:00,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-19 03:54:00,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-19 03:54:00,904 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 [2022-02-19 03:54:00,905 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:54:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:54:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1635917071, now seen corresponding path program 3 times [2022-02-19 03:54:00,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:54:00,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583692673] [2022-02-19 03:54:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:54:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:54:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:54:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-19 03:54:01,016 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:54:01,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583692673] [2022-02-19 03:54:01,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583692673] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:54:01,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826393816] [2022-02-19 03:54:01,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-19 03:54:01,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:54:01,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:54:01,020 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) [2022-02-19 03:54:01,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-19 03:54:01,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-19 03:54:01,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 03:54:01,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-19 03:54:01,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:54:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-19 03:54:01,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 03:54:01,300 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-19 03:54:01,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-02-19 03:54:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-19 03:54:01,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826393816] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 03:54:01,309 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 03:54:01,309 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-02-19 03:54:01,309 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980472384] [2022-02-19 03:54:01,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 03:54:01,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-19 03:54:01,309 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:54:01,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-19 03:54:01,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-19 03:54:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:01,310 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:54:01,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) 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) [2022-02-19 03:54:01,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:01,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:01,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:01,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-02-19 03:54:01,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-19 03:54:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:01,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-19 03:54:01,705 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 [2022-02-19 03:54:01,706 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:54:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:54:01,707 INFO L85 PathProgramCache]: Analyzing trace with hash 808466703, now seen corresponding path program 4 times [2022-02-19 03:54:01,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:54:01,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149187313] [2022-02-19 03:54:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:54:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:54:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:54:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:54:02,000 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:54:02,000 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149187313] [2022-02-19 03:54:02,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149187313] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:54:02,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775930426] [2022-02-19 03:54:02,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-19 03:54:02,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:54:02,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:54:02,002 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) [2022-02-19 03:54:02,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-19 03:54:02,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-19 03:54:02,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 03:54:02,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-19 03:54:02,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:54:02,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 63 [2022-02-19 03:54:02,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2022-02-19 03:54:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:54:02,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 03:54:03,079 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-19 03:54:03,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 79 [2022-02-19 03:54:03,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2022-02-19 03:54:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:54:03,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775930426] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 03:54:03,223 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 03:54:03,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2022-02-19 03:54:03,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78496613] [2022-02-19 03:54:03,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 03:54:03,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-19 03:54:03,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:54:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-19 03:54:03,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2022-02-19 03:54:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:03,225 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:54:03,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 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) [2022-02-19 03:54:03,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:03,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:03,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:03,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-02-19 03:54:03,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:03,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:04,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:04,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-19 03:54:04,756 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 [2022-02-19 03:54:04,757 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:54:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:54:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash -551287093, now seen corresponding path program 5 times [2022-02-19 03:54:04,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:54:04,758 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078604658] [2022-02-19 03:54:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:54:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:54:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:54:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:54:05,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:54:05,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078604658] [2022-02-19 03:54:05,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078604658] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:54:05,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082934531] [2022-02-19 03:54:05,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-19 03:54:05,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:54:05,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:54:05,082 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) [2022-02-19 03:54:05,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-19 03:54:05,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-19 03:54:05,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 03:54:05,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 47 conjunts are in the unsatisfiable core [2022-02-19 03:54:05,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:54:05,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 76 [2022-02-19 03:54:05,652 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2022-02-19 03:54:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:54:05,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 03:54:06,404 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-19 03:54:06,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 81 [2022-02-19 03:54:06,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2022-02-19 03:54:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:54:06,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082934531] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 03:54:06,446 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 03:54:06,446 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2022-02-19 03:54:06,447 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879229747] [2022-02-19 03:54:06,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 03:54:06,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-19 03:54:06,447 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:54:06,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-19 03:54:06,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-02-19 03:54:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:06,448 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:54:06,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.4375) internal successors, (46), 32 states have internal predecessors, (46), 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) [2022-02-19 03:54:06,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:06,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:06,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:06,449 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:06,449 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:06,449 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:06,449 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:07,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-19 03:54:07,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-19 03:54:08,113 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 [2022-02-19 03:54:08,114 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:54:08,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:54:08,114 INFO L85 PathProgramCache]: Analyzing trace with hash 701172079, now seen corresponding path program 6 times [2022-02-19 03:54:08,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:54:08,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263193385] [2022-02-19 03:54:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:54:08,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:54:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:54:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-19 03:54:08,264 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:54:08,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263193385] [2022-02-19 03:54:08,264 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263193385] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:54:08,264 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396340524] [2022-02-19 03:54:08,265 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-19 03:54:08,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:54:08,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:54:08,266 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) [2022-02-19 03:54:08,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-19 03:54:08,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-19 03:54:08,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 03:54:08,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-19 03:54:08,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:54:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-19 03:54:08,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 03:54:08,588 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-19 03:54:08,589 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 35 [2022-02-19 03:54:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-19 03:54:08,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396340524] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 03:54:08,605 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 03:54:08,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-19 03:54:08,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544982872] [2022-02-19 03:54:08,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 03:54:08,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-19 03:54:08,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:54:08,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-19 03:54:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-02-19 03:54:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:08,607 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:54:08,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-19 03:54:08,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:08,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:08,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:08,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:08,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:08,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:08,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2022-02-19 03:54:08,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-19 03:54:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-19 03:54:08,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-19 03:54:09,068 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 [2022-02-19 03:54:09,068 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:54:09,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:54:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1087122831, now seen corresponding path program 7 times [2022-02-19 03:54:09,069 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:54:09,069 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058216620] [2022-02-19 03:54:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:54:09,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:54:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:54:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-19 03:54:09,225 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:54:09,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058216620] [2022-02-19 03:54:09,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058216620] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:54:09,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405585905] [2022-02-19 03:54:09,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-19 03:54:09,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:54:09,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:54:09,227 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) [2022-02-19 03:54:09,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-19 03:54:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:54:09,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 31 conjunts are in the unsatisfiable core [2022-02-19 03:54:09,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:54:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-19 03:54:09,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 03:54:09,709 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-19 03:54:09,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-02-19 03:54:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-19 03:54:09,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405585905] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 03:54:09,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 03:54:09,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-02-19 03:54:09,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269044554] [2022-02-19 03:54:09,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 03:54:09,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-19 03:54:09,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:54:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-19 03:54:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-02-19 03:54:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:09,753 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:54:09,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2022-02-19 03:54:09,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:09,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:09,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:09,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:09,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:09,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:09,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-02-19 03:54:09,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-02-19 03:54:09,753 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-19 03:54:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-19 03:54:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-19 03:54:10,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-02-19 03:54:10,291 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 [2022-02-19 03:54:10,291 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:54:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:54:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1698179471, now seen corresponding path program 8 times [2022-02-19 03:54:10,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:54:10,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170074668] [2022-02-19 03:54:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:54:10,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:54:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:54:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:54:10,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:54:10,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170074668] [2022-02-19 03:54:10,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170074668] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:54:10,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845530185] [2022-02-19 03:54:10,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-19 03:54:10,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:54:10,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:54:10,718 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) [2022-02-19 03:54:10,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-19 03:54:10,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-19 03:54:10,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 03:54:10,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-19 03:54:10,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:54:11,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 76 [2022-02-19 03:54:11,374 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2022-02-19 03:54:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:54:11,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 03:54:12,083 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-02-19 03:54:12,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 98 [2022-02-19 03:54:12,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 75 [2022-02-19 03:54:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 03:54:12,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845530185] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 03:54:12,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 03:54:12,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-02-19 03:54:12,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056610203] [2022-02-19 03:54:12,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 03:54:12,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-02-19 03:54:12,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:54:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-02-19 03:54:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1230, Unknown=0, NotChecked=0, Total=1332 [2022-02-19 03:54:12,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:12,161 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:54:12,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 37 states have internal predecessors, (51), 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) [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-02-19 03:54:12,161 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-19 03:54:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-19 03:54:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-19 03:54:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-19 03:54:14,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-19 03:54:14,199 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 [2022-02-19 03:54:14,200 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:54:14,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:54:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1929580911, now seen corresponding path program 9 times [2022-02-19 03:54:14,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:54:14,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065053760] [2022-02-19 03:54:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:54:14,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:54:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:54:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-19 03:54:14,267 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:54:14,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065053760] [2022-02-19 03:54:14,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065053760] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:54:14,267 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181488735] [2022-02-19 03:54:14,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-19 03:54:14,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:54:14,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:54:14,268 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-19 03:54:14,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-19 03:54:14,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-19 03:54:14,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 03:54:14,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-19 03:54:14,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:54:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-19 03:54:14,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-19 03:54:14,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181488735] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 03:54:14,533 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-19 03:54:14,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2022-02-19 03:54:14,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146482856] [2022-02-19 03:54:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 03:54:14,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-19 03:54:14,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:54:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-19 03:54:14,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-02-19 03:54:14,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:14,535 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:54:14,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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) [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-02-19 03:54:14,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-19 03:54:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-19 03:54:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-19 03:54:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-19 03:54:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:14,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-19 03:54:14,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-19 03:54:14,799 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-19 03:54:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 03:54:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash 188520243, now seen corresponding path program 10 times [2022-02-19 03:54:14,799 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 03:54:14,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893939434] [2022-02-19 03:54:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 03:54:14,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 03:54:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 03:54:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-19 03:54:14,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 03:54:14,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893939434] [2022-02-19 03:54:14,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893939434] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 03:54:14,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737935868] [2022-02-19 03:54:14,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-19 03:54:14,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 03:54:14,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 03:54:14,878 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-19 03:54:14,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-19 03:54:14,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-19 03:54:14,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 03:54:14,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-19 03:54:14,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 03:54:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-02-19 03:54:15,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-19 03:54:15,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737935868] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-19 03:54:15,052 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-19 03:54:15,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-02-19 03:54:15,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923292376] [2022-02-19 03:54:15,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-19 03:54:15,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-19 03:54:15,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 03:54:15,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-19 03:54:15,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-02-19 03:54:15,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:15,053 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 03:54:15,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 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) [2022-02-19 03:54:15,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:15,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:15,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:15,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:15,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:15,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:15,053 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2022-02-19 03:54:15,054 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-02-19 03:54:15,054 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-02-19 03:54:15,054 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-02-19 03:54:15,054 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:15,054 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 03:54:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-19 03:54:15,093 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-02-19 03:54:15,093 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-19 03:54:15,093 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-19 03:54:15,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-19 03:54:15,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-02-19 03:54:15,317 INFO L732 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2022-02-19 03:54:15,318 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-19 03:54:15,318 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-19 03:54:15,320 INFO L202 PluginConnector]: Adding new model chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 03:54:15 BasicIcfg [2022-02-19 03:54:15,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-19 03:54:15,320 INFO L158 Benchmark]: Toolchain (without parser) took 20570.70ms. Allocated memory was 172.0MB in the beginning and 351.3MB in the end (delta: 179.3MB). Free memory was 130.8MB in the beginning and 140.0MB in the end (delta: -9.1MB). Peak memory consumption was 170.9MB. Max. memory is 8.0GB. [2022-02-19 03:54:15,320 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 172.0MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-19 03:54:15,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.81ms. Allocated memory is still 172.0MB. Free memory was 130.8MB in the beginning and 129.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-19 03:54:15,321 INFO L158 Benchmark]: Boogie Preprocessor took 10.73ms. Allocated memory is still 172.0MB. Free memory was 129.2MB in the beginning and 128.3MB in the end (delta: 916.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-19 03:54:15,321 INFO L158 Benchmark]: RCFGBuilder took 317.86ms. Allocated memory is still 172.0MB. Free memory was 128.2MB in the beginning and 116.9MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-19 03:54:15,321 INFO L158 Benchmark]: TraceAbstraction took 20215.63ms. Allocated memory was 172.0MB in the beginning and 351.3MB in the end (delta: 179.3MB). Free memory was 116.5MB in the beginning and 140.0MB in the end (delta: -23.5MB). Peak memory consumption was 157.2MB. Max. memory is 8.0GB. [2022-02-19 03:54:15,322 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 0.13ms. Allocated memory is still 172.0MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 17.81ms. Allocated memory is still 172.0MB. Free memory was 130.8MB in the beginning and 129.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.73ms. Allocated memory is still 172.0MB. Free memory was 129.2MB in the beginning and 128.3MB in the end (delta: 916.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 317.86ms. Allocated memory is still 172.0MB. Free memory was 128.2MB in the beginning and 116.9MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 20215.63ms. Allocated memory was 172.0MB in the beginning and 351.3MB in the end (delta: 179.3MB). Free memory was 116.5MB in the beginning and 140.0MB in the end (delta: -23.5MB). Peak memory consumption was 157.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 574, positive: 446, positive conditional: 345, positive unconditional: 101, negative: 128, negative conditional: 128, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 446, positive: 446, positive conditional: 345, positive unconditional: 101, 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: 446, positive: 446, positive conditional: 345, positive unconditional: 101, 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: 446, positive: 446, positive conditional: 312, positive unconditional: 134, 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: 446, positive: 446, positive conditional: 242, positive unconditional: 204, 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: 446, positive: 446, positive conditional: 242, positive unconditional: 204, 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: 101, positive: 101, positive conditional: 0, positive unconditional: 101, 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: 101, positive: 100, positive conditional: 0, positive unconditional: 100, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 446, positive: 345, positive conditional: 242, positive unconditional: 103, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 101, unknown conditional: 0, unknown unconditional: 101] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 70, Maximal queried relation: 0, Independence queries for same thread: 128 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 15, Number of trivial persistent sets: 9, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 101, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 574, positive: 446, positive conditional: 345, positive unconditional: 101, negative: 128, negative conditional: 128, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 446, positive: 446, positive conditional: 345, positive unconditional: 101, 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: 446, positive: 446, positive conditional: 345, positive unconditional: 101, 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: 446, positive: 446, positive conditional: 312, positive unconditional: 134, 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: 446, positive: 446, positive conditional: 242, positive unconditional: 204, 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: 446, positive: 446, positive conditional: 242, positive unconditional: 204, 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: 101, positive: 101, positive conditional: 0, positive unconditional: 101, 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: 101, positive: 100, positive conditional: 0, positive unconditional: 100, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 446, positive: 345, positive conditional: 242, positive unconditional: 103, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 101, unknown conditional: 0, unknown unconditional: 101] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 70, Maximal queried relation: 0, Independence queries for same thread: 128 - 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 - PositiveResult [Line: 80]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 27 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 20.1s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 7.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 174, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 7770 SizeOfPredicates, 121 NumberOfNonLiveVariables, 1019 ConjunctsInSsa, 308 ConjunctsInUnsatCore, 30 InterpolantComputations, 4 PerfectInterpolantSequences, 164/493 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-19 03:54:15,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-02-19 03:54:15,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...