/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-NewStatesSleep-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-?-bc289cb [2022-01-28 20:36:17,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 20:36:17,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 20:36:17,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-28 20:36:17,469 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-NewStatesSleep-NoLbe.epf [2022-01-28 20:36:17,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 20:36:17,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 20:36:17,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 20:36:17,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 20:36:17,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 20:36:17,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 20:36:17,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 20:36:17,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 20:36:17,496 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 20:36:17,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 20:36:17,497 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 20:36:17,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 20:36:17,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 20:36:17,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 20:36:17,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 20:36:17,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 20:36:17,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 20:36:17,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 20:36:17,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 20:36:17,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 20:36:17,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 20:36:17,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 20:36:17,499 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 20:36:17,499 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-01-28 20:36:17,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 20:36:17,499 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-01-28 20:36:17,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 20:36:17,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 20:36:17,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 20:36:17,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 20:36:17,728 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-28 20:36:17,731 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-28 20:36:17,732 INFO L432 ainManager$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 [2022-01-28 20:36:17,732 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/chromosome-opt-symm.wvr.bpl' [2022-01-28 20:36:17,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 20:36:17,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-28 20:36:17,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 20:36:17,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 20:36:17,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 20:36:17,775 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 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,781 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 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,785 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-28 20:36:17,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 20:36:17,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 20:36:17,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 20:36:17,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 20:36:17,792 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 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,793 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 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,799 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 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,800 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 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,806 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 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,809 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 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,815 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 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 20:36:17,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 20:36:17,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 20:36:17,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 20:36:17,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 08:36:17" (1/1) ... [2022-01-28 20:36:17,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 20:36:17,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:17,844 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) [2022-01-28 20:36:17,848 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 [2022-01-28 20:36:17,870 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-28 20:36:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-28 20:36:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-28 20:36:17,870 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-28 20:36:17,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-28 20:36:17,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-28 20:36:17,871 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-28 20:36:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 20:36:17,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 20:36:17,871 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 20:36:17,908 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 20:36:17,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 20:36:18,009 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 20:36:18,054 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 20:36:18,054 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-28 20:36:18,056 INFO L202 PluginConnector]: Adding new model chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:36:18 BoogieIcfgContainer [2022-01-28 20:36:18,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 20:36:18,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 20:36:18,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 20:36:18,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 20:36:18,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 08:36:17" (1/2) ... [2022-01-28 20:36:18,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2992a655 and model type chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:36:18, skipping insertion in model container [2022-01-28 20:36:18,080 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 28.01 08:36:18" (2/2) ... [2022-01-28 20:36:18,081 INFO L111 eAbstractionObserver]: Analyzing ICFG chromosome-opt-symm.wvr.bpl [2022-01-28 20:36:18,085 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 20:36:18,085 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 20:36:18,085 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 20:36:18,085 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 20:36:18,137 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-28 20:36:18,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-01-28 20:36:18,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:18,172 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) [2022-01-28 20:36:18,173 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 [2022-01-28 20:36:18,193 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 20:36:18,198 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, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-28 20:36:18,198 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-28 20:36:18,226 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:18,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1509786571, now seen corresponding path program 1 times [2022-01-28 20:36:18,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:18,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649968680] [2022-01-28 20:36:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:18,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:18,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:18,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649968680] [2022-01-28 20:36:18,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649968680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 20:36:18,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 20:36:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-28 20:36:18,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360218666] [2022-01-28 20:36:18,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 20:36:18,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-28 20:36:18,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:18,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-28 20:36:18,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-28 20:36:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:18,389 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:18,390 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) [2022-01-28 20:36:18,390 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:18,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 20:36:18,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:18,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash 284946031, now seen corresponding path program 1 times [2022-01-28 20:36:18,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:18,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169128551] [2022-01-28 20:36:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:18,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:18,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:18,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169128551] [2022-01-28 20:36:18,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169128551] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:18,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714292489] [2022-01-28 20:36:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:18,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:18,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:18,560 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) [2022-01-28 20:36:18,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-28 20:36:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:18,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-28 20:36:18,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 20:36:18,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 20:36:18,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714292489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 20:36:18,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 20:36:18,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-01-28 20:36:18,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005250952] [2022-01-28 20:36:18,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 20:36:18,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-28 20:36:18,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-28 20:36:18,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-28 20:36:18,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:18,681 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:18,681 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) [2022-01-28 20:36:18,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:18,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:18,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:18,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-01-28 20:36:18,916 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:18,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:18,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1069017231, now seen corresponding path program 1 times [2022-01-28 20:36:18,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:18,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148265836] [2022-01-28 20:36:18,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:18,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:19,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:19,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148265836] [2022-01-28 20:36:19,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148265836] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:19,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349716431] [2022-01-28 20:36:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:19,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:19,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:19,180 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) [2022-01-28 20:36:19,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-28 20:36:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:19,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-28 20:36:19,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:19,547 INFO L388 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 71 treesize of output 59 [2022-01-28 20:36:19,552 INFO L388 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 59 treesize of output 47 [2022-01-28 20:36:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:19,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 20:36:20,099 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-28 20:36:20,102 INFO L388 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 [2022-01-28 20:36:20,109 INFO L388 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 [2022-01-28 20:36:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:20,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349716431] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 20:36:20,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 20:36:20,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-01-28 20:36:20,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19569255] [2022-01-28 20:36:20,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 20:36:20,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-28 20:36:20,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:20,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-28 20:36:20,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-28 20:36:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:20,209 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:20,209 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) [2022-01-28 20:36:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:20,210 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:20,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:21,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:21,052 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 423040331, now seen corresponding path program 2 times [2022-01-28 20:36:21,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:21,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140084843] [2022-01-28 20:36:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:21,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:21,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:21,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140084843] [2022-01-28 20:36:21,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140084843] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:21,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879505333] [2022-01-28 20:36:21,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 20:36:21,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:21,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:21,341 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) [2022-01-28 20:36:21,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-28 20:36:21,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 20:36:21,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 20:36:21,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-28 20:36:21,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:21,757 INFO L388 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 85 treesize of output 69 [2022-01-28 20:36:21,761 INFO L388 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 59 treesize of output 47 [2022-01-28 20:36:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:21,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 20:36:22,504 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2022-01-28 20:36:22,504 INFO L388 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 95 treesize of output 73 [2022-01-28 20:36:22,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-28 20:36:22,509 INFO L388 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 56 treesize of output 32 [2022-01-28 20:36:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:22,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879505333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 20:36:22,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 20:36:22,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-28 20:36:22,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874601473] [2022-01-28 20:36:22,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 20:36:22,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-28 20:36:22,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-28 20:36:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2022-01-28 20:36:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:22,538 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:22,538 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) [2022-01-28 20:36:22,538 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:22,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:22,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:22,539 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:23,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-28 20:36:23,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:23,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:23,594 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:23,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1635917071, now seen corresponding path program 3 times [2022-01-28 20:36:23,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:23,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394190494] [2022-01-28 20:36:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:23,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 20:36:23,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394190494] [2022-01-28 20:36:23,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394190494] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626794415] [2022-01-28 20:36:23,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 20:36:23,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:23,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:23,688 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) [2022-01-28 20:36:23,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-28 20:36:23,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-28 20:36:23,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 20:36:23,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-28 20:36:23,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 20:36:23,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 20:36:23,982 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-28 20:36:23,983 INFO L388 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 [2022-01-28 20:36:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 20:36:23,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626794415] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 20:36:23,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 20:36:23,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-01-28 20:36:23,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984712258] [2022-01-28 20:36:23,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 20:36:23,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-28 20:36:23,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:23,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-28 20:36:23,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-28 20:36:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:23,990 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:23,990 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) [2022-01-28 20:36:23,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:23,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:23,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:23,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-01-28 20:36:23,991 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-28 20:36:24,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:24,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:24,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:24,381 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:24,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:24,382 INFO L85 PathProgramCache]: Analyzing trace with hash 808466703, now seen corresponding path program 4 times [2022-01-28 20:36:24,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:24,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649024250] [2022-01-28 20:36:24,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:24,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:24,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:24,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649024250] [2022-01-28 20:36:24,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649024250] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:24,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728273839] [2022-01-28 20:36:24,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 20:36:24,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:24,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:24,650 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) [2022-01-28 20:36:24,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-28 20:36:24,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 20:36:24,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 20:36:24,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 41 conjunts are in the unsatisfiable core [2022-01-28 20:36:24,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:25,086 INFO L388 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 71 treesize of output 59 [2022-01-28 20:36:25,090 INFO L388 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 59 treesize of output 47 [2022-01-28 20:36:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:25,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 20:36:25,688 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-28 20:36:25,688 INFO L388 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 [2022-01-28 20:36:25,692 INFO L388 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 [2022-01-28 20:36:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:25,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728273839] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 20:36:25,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 20:36:25,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2022-01-28 20:36:25,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169767248] [2022-01-28 20:36:25,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 20:36:25,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-28 20:36:25,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-28 20:36:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2022-01-28 20:36:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:25,807 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:25,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) [2022-01-28 20:36:25,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:25,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:25,807 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:25,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-01-28 20:36:25,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:25,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:26,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:27,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:27,146 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:27,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash -551287093, now seen corresponding path program 5 times [2022-01-28 20:36:27,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:27,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300956499] [2022-01-28 20:36:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:27,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:27,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:27,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300956499] [2022-01-28 20:36:27,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300956499] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:27,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954328505] [2022-01-28 20:36:27,465 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-28 20:36:27,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:27,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:27,466 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) [2022-01-28 20:36:27,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-28 20:36:27,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-28 20:36:27,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 20:36:27,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-28 20:36:27,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:28,006 INFO L388 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 93 treesize of output 77 [2022-01-28 20:36:28,009 INFO L388 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 77 treesize of output 61 [2022-01-28 20:36:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:28,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 20:36:28,690 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-28 20:36:28,691 INFO L388 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 [2022-01-28 20:36:28,693 INFO L388 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 [2022-01-28 20:36:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:28,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954328505] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 20:36:28,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 20:36:28,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2022-01-28 20:36:28,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674522121] [2022-01-28 20:36:28,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 20:36:28,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-28 20:36:28,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-28 20:36:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2022-01-28 20:36:28,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:28,744 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:28,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 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) [2022-01-28 20:36:28,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:28,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:28,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:28,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:28,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:28,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:28,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-28 20:36:30,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:30,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:30,240 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash 701172079, now seen corresponding path program 6 times [2022-01-28 20:36:30,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:30,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525957875] [2022-01-28 20:36:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:30,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-28 20:36:30,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:30,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525957875] [2022-01-28 20:36:30,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525957875] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:30,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232282499] [2022-01-28 20:36:30,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-28 20:36:30,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:30,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:30,344 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) [2022-01-28 20:36:30,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-28 20:36:30,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-28 20:36:30,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 20:36:30,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-28 20:36:30,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-28 20:36:30,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 20:36:30,782 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-28 20:36:30,782 INFO L388 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 [2022-01-28 20:36:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-28 20:36:30,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232282499] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 20:36:30,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 20:36:30,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-28 20:36:30,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808732561] [2022-01-28 20:36:30,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 20:36:30,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-28 20:36:30,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:30,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-28 20:36:30,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-01-28 20:36:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:30,808 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:30,808 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) [2022-01-28 20:36:30,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:30,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:30,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:30,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:30,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:30,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:30,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2022-01-28 20:36:30,808 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-28 20:36:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-28 20:36:31,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:31,257 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,SelfDestructingSolverStorable7 [2022-01-28 20:36:31,258 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1087122831, now seen corresponding path program 7 times [2022-01-28 20:36:31,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:31,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096659065] [2022-01-28 20:36:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:31,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 20:36:31,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:31,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096659065] [2022-01-28 20:36:31,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096659065] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:31,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615558613] [2022-01-28 20:36:31,392 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-28 20:36:31,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:31,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:31,420 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) [2022-01-28 20:36:31,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-28 20:36:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:31,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-28 20:36:31,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 20:36:31,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 20:36:31,858 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-28 20:36:31,859 INFO L388 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 [2022-01-28 20:36:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-28 20:36:31,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615558613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 20:36:31,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 20:36:31,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-01-28 20:36:31,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134100923] [2022-01-28 20:36:31,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 20:36:31,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-28 20:36:31,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:31,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-28 20:36:31,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-01-28 20:36:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:31,909 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:31,909 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) [2022-01-28 20:36:31,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:31,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:31,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:31,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:31,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:31,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:31,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-01-28 20:36:31,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-01-28 20:36:31,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-28 20:36:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-28 20:36:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-28 20:36:32,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:32,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:32,525 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:32,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:32,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1698179471, now seen corresponding path program 8 times [2022-01-28 20:36:32,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:32,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090645471] [2022-01-28 20:36:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:32,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:32,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:32,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090645471] [2022-01-28 20:36:32,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090645471] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:32,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643923920] [2022-01-28 20:36:32,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-28 20:36:32,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:32,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:32,991 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) [2022-01-28 20:36:32,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-28 20:36:33,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-28 20:36:33,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 20:36:33,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-28 20:36:33,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:33,647 INFO L388 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 95 treesize of output 79 [2022-01-28 20:36:33,649 INFO L388 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 79 treesize of output 63 [2022-01-28 20:36:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:33,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-28 20:36:34,307 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-28 20:36:34,307 INFO L388 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 118 treesize of output 101 [2022-01-28 20:36:34,310 INFO L388 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 98 treesize of output 78 [2022-01-28 20:36:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 20:36:34,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643923920] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-28 20:36:34,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-28 20:36:34,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2022-01-28 20:36:34,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254210880] [2022-01-28 20:36:34,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-28 20:36:34,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-28 20:36:34,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-28 20:36:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1230, Unknown=0, NotChecked=0, Total=1332 [2022-01-28 20:36:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:34,373 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:34,373 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) [2022-01-28 20:36:34,373 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:34,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:34,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:34,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:34,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:34,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:34,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2022-01-28 20:36:34,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-01-28 20:36:34,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-01-28 20:36:34,374 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-28 20:36:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-28 20:36:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-28 20:36:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-28 20:36:36,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:36,345 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,SelfDestructingSolverStorable9 [2022-01-28 20:36:36,346 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:36,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1929580911, now seen corresponding path program 9 times [2022-01-28 20:36:36,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:36,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237096676] [2022-01-28 20:36:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:36,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-28 20:36:36,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:36,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237096676] [2022-01-28 20:36:36,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237096676] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:36,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895393204] [2022-01-28 20:36:36,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-28 20:36:36,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:36,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:36,422 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) [2022-01-28 20:36:36,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-28 20:36:36,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-28 20:36:36,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 20:36:36,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-28 20:36:36,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-28 20:36:36,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 20:36:36,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895393204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 20:36:36,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 20:36:36,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2022-01-28 20:36:36,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63036173] [2022-01-28 20:36:36,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 20:36:36,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 20:36:36,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:36,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 20:36:36,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2022-01-28 20:36:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:36,648 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:36,649 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) [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-01-28 20:36:36,649 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-28 20:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-28 20:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-28 20:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-28 20:36:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:36,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-28 20:36:36,911 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,SelfDestructingSolverStorable10 [2022-01-28 20:36:36,911 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-28 20:36:36,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 20:36:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash 188520243, now seen corresponding path program 10 times [2022-01-28 20:36:36,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 20:36:36,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901946796] [2022-01-28 20:36:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 20:36:36,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 20:36:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 20:36:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-28 20:36:36,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 20:36:36,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901946796] [2022-01-28 20:36:36,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901946796] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-28 20:36:36,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909357162] [2022-01-28 20:36:36,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-28 20:36:36,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-28 20:36:36,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 20:36:36,971 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-28 20:36:36,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-28 20:36:37,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-28 20:36:37,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-28 20:36:37,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-28 20:36:37,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-28 20:36:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-28 20:36:37,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-28 20:36:37,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909357162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 20:36:37,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-28 20:36:37,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-01-28 20:36:37,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828485751] [2022-01-28 20:36:37,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 20:36:37,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 20:36:37,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 20:36:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 20:36:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-01-28 20:36:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:37,182 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-01-28 20:36:37,182 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) [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-01-28 20:36:37,182 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:37,183 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-28 20:36:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 20:36:38,799 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-01-28 20:36:38,799 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-28 20:36:38,799 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-28 20:36:38,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-28 20:36:39,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-28 20:36:39,019 INFO L732 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2022-01-28 20:36:39,021 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-28 20:36:39,021 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-28 20:36:39,022 INFO L202 PluginConnector]: Adding new model chromosome-opt-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 08:36:39 BasicIcfg [2022-01-28 20:36:39,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-28 20:36:39,023 INFO L158 Benchmark]: Toolchain (without parser) took 21257.14ms. Allocated memory was 216.0MB in the beginning and 404.8MB in the end (delta: 188.7MB). Free memory was 180.6MB in the beginning and 279.5MB in the end (delta: -98.9MB). Peak memory consumption was 91.8MB. Max. memory is 8.0GB. [2022-01-28 20:36:39,023 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 216.0MB. Free memory was 182.0MB in the beginning and 181.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 20:36:39,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.52ms. Allocated memory is still 216.0MB. Free memory was 180.6MB in the beginning and 179.1MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-28 20:36:39,024 INFO L158 Benchmark]: Boogie Preprocessor took 29.40ms. Allocated memory is still 216.0MB. Free memory was 179.1MB in the beginning and 178.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 20:36:39,024 INFO L158 Benchmark]: RCFGBuilder took 238.75ms. Allocated memory is still 216.0MB. Free memory was 178.1MB in the beginning and 166.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-28 20:36:39,024 INFO L158 Benchmark]: TraceAbstraction took 20957.64ms. Allocated memory was 216.0MB in the beginning and 404.8MB in the end (delta: 188.7MB). Free memory was 166.4MB in the beginning and 279.5MB in the end (delta: -113.2MB). Peak memory consumption was 76.1MB. Max. memory is 8.0GB. [2022-01-28 20:36:39,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09ms. Allocated memory is still 216.0MB. Free memory was 182.0MB in the beginning and 181.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.52ms. Allocated memory is still 216.0MB. Free memory was 180.6MB in the beginning and 179.1MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.40ms. Allocated memory is still 216.0MB. Free memory was 179.1MB in the beginning and 178.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 238.75ms. Allocated memory is still 216.0MB. Free memory was 178.1MB in the beginning and 166.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 20957.64ms. Allocated memory was 216.0MB in the beginning and 404.8MB in the end (delta: 188.7MB). Free memory was 166.4MB in the beginning and 279.5MB in the end (delta: -113.2MB). Peak memory consumption was 76.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 789, positive: 599, positive conditional: 599, positive unconditional: 0, negative: 190, negative conditional: 190, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 599, positive: 599, positive conditional: 599, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 599, positive: 599, positive conditional: 599, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 599, positive: 599, positive conditional: 559, positive unconditional: 40, 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: 599, positive: 599, positive conditional: 474, positive unconditional: 125, 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: 599, positive: 599, positive conditional: 474, positive unconditional: 125, 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: 112, positive: 112, positive conditional: 100, positive unconditional: 12, 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: 112, positive: 112, positive conditional: 0, positive unconditional: 112, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 599, positive: 487, positive conditional: 374, positive unconditional: 113, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 112, unknown conditional: 100, unknown unconditional: 12] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 112, Positive conditional cache size: 100, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 85, Maximal queried relation: 0, Independence queries for same thread: 190 - 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 with 1 thread instances CFG has 5 procedures, 27 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 20.9s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 8.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 192, 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, 9.4s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 534 ConstructedInterpolants, 0 QuantifiedInterpolants, 7956 SizeOfPredicates, 122 NumberOfNonLiveVariables, 1066 ConjunctsInSsa, 313 ConjunctsInUnsatCore, 31 InterpolantComputations, 4 PerfectInterpolantSequences, 164/494 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! [2022-01-28 20:36:39,051 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 [2022-01-28 20:36:39,265 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...