/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 20:18:56,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 20:18:56,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 20:18:56,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-16 20:18:56,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-16 20:18:56,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-16 20:18:56,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-16 20:18:56,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks.epf [2022-02-16 20:18:56,966 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 20:18:56,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 20:18:56,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 20:18:56,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 20:18:56,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 20:18:56,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 20:18:56,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 20:18:56,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 20:18:56,975 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 20:18:56,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 20:18:56,976 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 20:18:56,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 20:18:56,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 20:18:56,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 20:18:56,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 20:18:56,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 20:18:56,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 20:18:56,977 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 20:18:56,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 20:18:56,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 20:18:56,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 20:18:56,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 20:18:56,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 20:18:56,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 20:18:56,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 20:18:56,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 20:18:56,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 20:18:56,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 20:18:56,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 20:18:56,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 20:18:56,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 20:18:56,979 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 20:18:56,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-16 20:18:56,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 20:18:56,980 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-16 20:18:56,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 20:18:57,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 20:18:57,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 20:18:57,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 20:18:57,197 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-16 20:18:57,200 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-16 20:18:57,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl [2022-02-16 20:18:57,201 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/send-receive-alt.wvr.bpl' [2022-02-16 20:18:57,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 20:18:57,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-16 20:18:57,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 20:18:57,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 20:18:57,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 20:18:57,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,257 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-16 20:18:57,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 20:18:57,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 20:18:57,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 20:18:57,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 20:18:57,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 20:18:57,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 20:18:57,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 20:18:57,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 20:18:57,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/1) ... [2022-02-16 20:18:57,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 20:18:57,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 20:18:57,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-16 20:18:57,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-16 20:18:57,334 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-16 20:18:57,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-16 20:18:57,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-16 20:18:57,334 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-16 20:18:57,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-16 20:18:57,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-16 20:18:57,335 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-16 20:18:57,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 20:18:57,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 20:18:57,336 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 20:18:57,376 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 20:18:57,377 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 20:18:57,450 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 20:18:57,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 20:18:57,463 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-16 20:18:57,464 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: thread1EXIT is neither atomic block end nor error location. [2022-02-16 20:18:57,466 INFO L202 PluginConnector]: Adding new model send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 08:18:57 BoogieIcfgContainer [2022-02-16 20:18:57,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 20:18:57,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 20:18:57,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 20:18:57,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 20:18:57,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 08:18:57" (1/2) ... [2022-02-16 20:18:57,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2959067e and model type send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 08:18:57, skipping insertion in model container [2022-02-16 20:18:57,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "send-receive-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 08:18:57" (2/2) ... [2022-02-16 20:18:57,480 INFO L111 eAbstractionObserver]: Analyzing ICFG send-receive-alt.wvr.bpl [2022-02-16 20:18:57,484 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 20:18:57,484 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 20:18:57,484 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 20:18:57,485 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 20:18:57,508 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-16 20:18:57,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 20:18:57,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 20:18:57,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-16 20:18:57,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-16 20:18:57,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 20:18:57,607 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-16 20:18:57,607 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-16 20:18:57,621 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 21 transitions, 58 flow [2022-02-16 20:18:57,651 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:18:57,682 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 20 transitions and produced 21 states. [2022-02-16 20:18:57,684 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 20:18:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 20:18:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash -612514274, now seen corresponding path program 1 times [2022-02-16 20:18:57,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 20:18:57,704 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011439550] [2022-02-16 20:18:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:18:57,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 20:18:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:18:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:18:57,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 20:18:57,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011439550] [2022-02-16 20:18:57,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011439550] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 20:18:57,835 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 20:18:57,836 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 20:18:57,837 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291938911] [2022-02-16 20:18:57,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 20:18:57,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 20:18:57,840 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 20:18:57,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 20:18:57,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 20:18:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:18:57,860 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 20:18:57,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:18:57,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:18:58,639 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 795 transitions and produced 656 states. [2022-02-16 20:18:58,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:18:58,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 20:18:58,641 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 20:18:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 20:18:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash -987070873, now seen corresponding path program 1 times [2022-02-16 20:18:58,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 20:18:58,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151001713] [2022-02-16 20:18:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:18:58,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 20:18:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:18:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:18:58,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 20:18:58,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151001713] [2022-02-16 20:18:58,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151001713] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 20:18:58,765 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 20:18:58,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-16 20:18:58,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216429373] [2022-02-16 20:18:58,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 20:18:58,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 20:18:58,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 20:18:58,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 20:18:58,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 20:18:58,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:18:58,771 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 20:18:58,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:18:58,771 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:18:58,771 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:18:59,592 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1291 transitions and produced 1075 states. [2022-02-16 20:18:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:18:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:18:59,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 20:18:59,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 20:18:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 20:18:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1304321976, now seen corresponding path program 1 times [2022-02-16 20:18:59,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 20:18:59,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793902074] [2022-02-16 20:18:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:18:59,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 20:18:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:18:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:18:59,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 20:18:59,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793902074] [2022-02-16 20:18:59,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793902074] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 20:18:59,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657621026] [2022-02-16 20:18:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:18:59,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:18:59,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 20:18:59,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 20:18:59,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-16 20:18:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:18:59,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-16 20:18:59,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 20:18:59,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-02-16 20:18:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:18:59,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 20:19:00,086 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-16 20:19:00,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2022-02-16 20:19:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:00,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657621026] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 20:19:00,198 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 20:19:00,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-16 20:19:00,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847142931] [2022-02-16 20:19:00,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 20:19:00,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-16 20:19:00,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 20:19:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-16 20:19:00,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-16 20:19:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:00,203 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 20:19:00,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:19:00,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:00,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:00,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:01,685 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3116 transitions and produced 2535 states. [2022-02-16 20:19:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:01,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-16 20:19:01,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-16 20:19:01,896 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 20:19:01,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 20:19:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1738430269, now seen corresponding path program 2 times [2022-02-16 20:19:01,897 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 20:19:01,897 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816632181] [2022-02-16 20:19:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:19:01,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 20:19:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:19:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:01,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 20:19:01,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816632181] [2022-02-16 20:19:01,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816632181] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 20:19:01,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 20:19:01,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-16 20:19:01,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837706417] [2022-02-16 20:19:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 20:19:01,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-16 20:19:01,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 20:19:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-16 20:19:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-16 20:19:01,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:01,937 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 20:19:01,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:19:01,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:01,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:01,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:01,937 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:02,755 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1699 transitions and produced 1458 states. [2022-02-16 20:19:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:02,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-16 20:19:02,756 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 20:19:02,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 20:19:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2026072000, now seen corresponding path program 3 times [2022-02-16 20:19:02,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 20:19:02,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923803545] [2022-02-16 20:19:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:19:02,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 20:19:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:19:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 20:19:02,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 20:19:02,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923803545] [2022-02-16 20:19:02,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923803545] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 20:19:02,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068397584] [2022-02-16 20:19:02,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-16 20:19:02,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:19:02,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 20:19:02,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 20:19:02,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-16 20:19:02,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-16 20:19:02,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 20:19:02,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-02-16 20:19:02,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 20:19:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 20:19:02,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 20:19:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 20:19:02,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068397584] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 20:19:02,900 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 20:19:02,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-02-16 20:19:02,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336425723] [2022-02-16 20:19:02,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 20:19:02,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 20:19:02,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 20:19:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 20:19:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-16 20:19:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:02,902 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 20:19:02,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:19:02,902 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:02,902 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:02,902 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:02,902 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:02,903 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:03,745 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1511 transitions and produced 1403 states. [2022-02-16 20:19:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:03,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-16 20:19:03,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:19:03,947 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 20:19:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 20:19:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash 22104032, now seen corresponding path program 1 times [2022-02-16 20:19:03,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 20:19:03,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728844779] [2022-02-16 20:19:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:19:03,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 20:19:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:19:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:04,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 20:19:04,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728844779] [2022-02-16 20:19:04,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728844779] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 20:19:04,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500467132] [2022-02-16 20:19:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:19:04,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:19:04,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 20:19:04,146 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 20:19:04,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-16 20:19:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:19:04,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-16 20:19:04,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 20:19:04,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:04,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:04,331 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2022-02-16 20:19:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:04,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 20:19:04,510 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-02-16 20:19:04,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 58 [2022-02-16 20:19:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:04,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500467132] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 20:19:04,644 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 20:19:04,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-16 20:19:04,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815704900] [2022-02-16 20:19:04,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 20:19:04,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-16 20:19:04,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 20:19:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-16 20:19:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-16 20:19:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:04,646 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 20:19:04,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:19:04,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:04,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:04,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:04,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:04,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:04,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:05,855 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1888 transitions and produced 1764 states. [2022-02-16 20:19:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-16 20:19:05,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-16 20:19:06,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:19:06,057 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 20:19:06,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 20:19:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash -623510552, now seen corresponding path program 2 times [2022-02-16 20:19:06,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 20:19:06,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943199537] [2022-02-16 20:19:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:19:06,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 20:19:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:19:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:06,242 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 20:19:06,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943199537] [2022-02-16 20:19:06,242 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943199537] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 20:19:06,242 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969313945] [2022-02-16 20:19:06,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-16 20:19:06,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:19:06,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 20:19:06,244 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 20:19:06,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-16 20:19:06,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-16 20:19:06,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 20:19:06,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-16 20:19:06,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 20:19:06,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:06,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:06,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:06,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:06,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:06,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:06,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 24 [2022-02-16 20:19:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:06,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 20:19:06,869 INFO L353 Elim1Store]: treesize reduction 76, result has 52.8 percent of original size [2022-02-16 20:19:06,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 58 treesize of output 112 [2022-02-16 20:19:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:07,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969313945] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 20:19:07,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 20:19:07,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-02-16 20:19:07,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557779821] [2022-02-16 20:19:07,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 20:19:07,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-16 20:19:07,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 20:19:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-16 20:19:07,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-02-16 20:19:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:07,165 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 20:19:07,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:19:07,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:07,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:07,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:07,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:07,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:07,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-16 20:19:07,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:39,569 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 70548 transitions and produced 47378 states. [2022-02-16 20:19:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-16 20:19:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-16 20:19:39,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-16 20:19:39,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:19:39,779 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 20:19:39,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 20:19:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash -634206939, now seen corresponding path program 3 times [2022-02-16 20:19:39,780 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 20:19:39,780 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959940053] [2022-02-16 20:19:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:19:39,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 20:19:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:19:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-16 20:19:40,105 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 20:19:40,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959940053] [2022-02-16 20:19:40,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959940053] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 20:19:40,106 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284291282] [2022-02-16 20:19:40,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-16 20:19:40,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:19:40,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 20:19:40,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 20:19:40,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-16 20:19:40,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-16 20:19:40,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 20:19:40,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 41 conjunts are in the unsatisfiable core [2022-02-16 20:19:40,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 20:19:41,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:19:41,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 34 [2022-02-16 20:19:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:41,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 20:19:41,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,857 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:19:41,927 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-16 20:19:41,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 202 [2022-02-16 20:19:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:19:42,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284291282] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 20:19:42,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 20:19:42,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2022-02-16 20:19:42,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518713174] [2022-02-16 20:19:42,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 20:19:42,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-02-16 20:19:42,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 20:19:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-02-16 20:19:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2022-02-16 20:19:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:19:42,836 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 20:19:42,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 32 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:19:42,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:42,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:19:42,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:19:42,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:42,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:19:42,836 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-16 20:19:42,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-16 20:19:42,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:20:16,452 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 69963 transitions and produced 47382 states. [2022-02-16 20:20:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:20:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:20:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:20:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:20:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:20:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-16 20:20:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-16 20:20:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-16 20:20:16,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-16 20:20:16,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:20:16,654 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-16 20:20:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 20:20:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1974984632, now seen corresponding path program 4 times [2022-02-16 20:20:16,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 20:20:16,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477967771] [2022-02-16 20:20:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 20:20:16,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 20:20:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 20:20:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 75 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-16 20:20:16,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 20:20:16,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477967771] [2022-02-16 20:20:16,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477967771] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 20:20:16,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311653287] [2022-02-16 20:20:16,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-16 20:20:16,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 20:20:16,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 20:20:17,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 20:20:17,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-16 20:20:17,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-16 20:20:17,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-16 20:20:17,048 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-16 20:20:17,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 20:20:17,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:20:17,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:20:17,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:20:17,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:20:17,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:17,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:18,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:20:18,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:18,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-16 20:20:18,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-02-16 20:20:18,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 21 disjoint index pairs (out of 78 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 44 [2022-02-16 20:20:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:20:18,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 20:20:19,369 INFO L353 Elim1Store]: treesize reduction 564, result has 45.8 percent of original size [2022-02-16 20:20:19,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 130 treesize of output 528 [2022-02-16 20:20:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 20:20:21,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311653287] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 20:20:21,043 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 20:20:21,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 40 [2022-02-16 20:20:21,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347095279] [2022-02-16 20:20:21,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 20:20:21,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-16 20:20:21,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 20:20:21,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-16 20:20:21,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2022-02-16 20:20:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 20:20:21,045 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 20:20:21,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 40 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 20:20:21,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:20:21,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 20:20:21,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2022-02-16 20:20:21,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:20:21,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 20:20:21,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-16 20:20:21,045 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-16 20:20:21,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2022-02-16 20:20:21,046 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.