/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 22:07:25,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 22:07:25,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 22:07:25,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-16 22:07:25,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 22:07:25,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 22:07:25,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 22:07:25,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 22:07:25,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 22:07:25,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 22:07:25,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 22:07:25,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 22:07:25,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 22:07:25,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 22:07:25,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 22:07:25,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 22:07:25,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-16 22:07:25,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 22:07:25,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 22:07:25,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 22:07:25,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf [2022-03-16 22:07:25,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 22:07:25,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 22:07:25,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 22:07:25,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 22:07:25,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 22:07:25,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 22:07:25,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 22:07:25,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 22:07:25,398 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 22:07:25,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 22:07:25,398 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 22:07:25,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 22:07:25,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 22:07:25,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 22:07:25,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 22:07:25,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 22:07:25,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 22:07:25,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 22:07:25,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 22:07:25,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 22:07:25,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 22:07:25,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 22:07:25,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 22:07:25,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 22:07:25,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 22:07:25,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 22:07:25,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 22:07:25,401 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 22:07:25,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 22:07:25,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 22:07:25,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 22:07:25,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 22:07:25,401 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 22:07:25,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 22:07:25,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 22:07:25,402 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-16 22:07:25,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 22:07:25,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 22:07:25,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 22:07:25,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 22:07:25,660 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 22:07:25,661 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 22:07:25,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl [2022-03-16 22:07:25,662 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl' [2022-03-16 22:07:25,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 22:07:25,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 22:07:25,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 22:07:25,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 22:07:25,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 22:07:25,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,709 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 22:07:25,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 22:07:25,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 22:07:25,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 22:07:25,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 22:07:25,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 22:07:25,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 22:07:25,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 22:07:25,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 22:07:25,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/1) ... [2022-03-16 22:07:25,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 22:07:25,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:07:25,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-16 22:07:25,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-16 22:07:25,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-16 22:07:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-16 22:07:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-16 22:07:25,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-16 22:07:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-16 22:07:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-16 22:07:25,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 22:07:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 22:07:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 22:07:25,803 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-16 22:07:25,848 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 22:07:25,849 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 22:07:25,928 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 22:07:25,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 22:07:25,935 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 22:07:25,936 INFO L202 PluginConnector]: Adding new model misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 10:07:25 BoogieIcfgContainer [2022-03-16 22:07:25,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 22:07:25,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 22:07:25,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 22:07:25,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 22:07:25,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:07:25" (1/2) ... [2022-03-16 22:07:25,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bb6bf2 and model type misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:07:25, skipping insertion in model container [2022-03-16 22:07:25,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 10:07:25" (2/2) ... [2022-03-16 22:07:25,952 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-3.wvr.bpl [2022-03-16 22:07:25,961 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 22:07:25,961 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 22:07:25,961 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 22:07:25,964 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 22:07:26,014 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-16 22:07:26,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 22:07:26,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:07:26,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-03-16 22:07:26,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-03-16 22:07:26,118 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 22:07:26,124 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-16 22:07:26,124 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 22:07:35,156 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 34817 transitions and produced 30598 states. [2022-03-16 22:07:35,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 22:07:35,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:07:35,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1869452988, now seen corresponding path program 1 times [2022-03-16 22:07:35,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:07:35,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298495632] [2022-03-16 22:07:35,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:07:35,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:07:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:07:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8052497 backedges. 8153 proven. 0 refuted. 0 times theorem prover too weak. 8044344 trivial. 0 not checked. [2022-03-16 22:07:52,137 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:07:52,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298495632] [2022-03-16 22:07:52,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298495632] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 22:07:52,138 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 22:07:52,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 22:07:52,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066980353] [2022-03-16 22:07:52,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 22:07:52,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-16 22:07:52,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:07:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-16 22:07:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-16 22:07:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:07:52,212 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:07:52,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 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) [2022-03-16 22:07:52,214 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:07:53,712 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3406 transitions and produced 3215 states. [2022-03-16 22:07:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:07:53,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 22:07:53,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 22:07:53,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:07:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1764120996, now seen corresponding path program 1 times [2022-03-16 22:07:53,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:07:53,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084916931] [2022-03-16 22:07:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:07:53,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:07:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:07:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 77726 backedges. 16471 proven. 355 refuted. 0 times theorem prover too weak. 60900 trivial. 0 not checked. [2022-03-16 22:07:54,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:07:54,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084916931] [2022-03-16 22:07:54,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084916931] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:07:54,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212858044] [2022-03-16 22:07:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:07:54,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:07:54,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:07:54,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 22:07:54,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-16 22:07:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:07:54,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-16 22:07:54,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:07:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 77726 backedges. 10133 proven. 0 refuted. 0 times theorem prover too weak. 67593 trivial. 0 not checked. [2022-03-16 22:07:57,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-16 22:07:57,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212858044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 22:07:57,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-16 22:07:57,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-03-16 22:07:57,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691455900] [2022-03-16 22:07:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 22:07:57,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 22:07:57,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:07:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 22:07:57,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-16 22:07:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:07:57,337 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:07:57,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 22:07:57,338 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:07:57,338 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:07:59,305 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 7651 transitions and produced 7072 states. [2022-03-16 22:07:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:07:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:07:59,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-16 22:07:59,519 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 [2022-03-16 22:07:59,520 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 22:07:59,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:07:59,521 INFO L85 PathProgramCache]: Analyzing trace with hash -236804237, now seen corresponding path program 1 times [2022-03-16 22:07:59,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:07:59,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184077756] [2022-03-16 22:07:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:07:59,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:07:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:08:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 378713 backedges. 38985 proven. 355 refuted. 0 times theorem prover too weak. 339373 trivial. 0 not checked. [2022-03-16 22:08:00,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:08:00,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184077756] [2022-03-16 22:08:00,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184077756] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:08:00,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506158161] [2022-03-16 22:08:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:08:00,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:08:00,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:08:00,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 22:08:00,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-16 22:08:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:08:01,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 2773 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-16 22:08:01,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:08:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 378713 backedges. 190845 proven. 0 refuted. 0 times theorem prover too weak. 187868 trivial. 0 not checked. [2022-03-16 22:08:03,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-16 22:08:03,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506158161] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 22:08:03,891 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-16 22:08:03,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-03-16 22:08:03,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939120185] [2022-03-16 22:08:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 22:08:03,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 22:08:03,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:08:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 22:08:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-16 22:08:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:08:03,894 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:08:03,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2022-03-16 22:08:03,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:03,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:03,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:08:04,566 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3490 transitions and produced 3298 states. [2022-03-16 22:08:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:04,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-16 22:08:04,767 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 [2022-03-16 22:08:04,768 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 22:08:04,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:08:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash -535218653, now seen corresponding path program 2 times [2022-03-16 22:08:04,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:08:04,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066934585] [2022-03-16 22:08:04,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:08:04,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:08:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:08:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 81195 backedges. 16883 proven. 355 refuted. 0 times theorem prover too weak. 63957 trivial. 0 not checked. [2022-03-16 22:08:04,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:08:04,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066934585] [2022-03-16 22:08:04,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066934585] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:08:04,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256526747] [2022-03-16 22:08:04,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 22:08:04,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:08:04,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:08:04,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 22:08:04,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-16 22:08:05,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-16 22:08:05,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 22:08:05,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-16 22:08:05,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:08:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 81195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81195 trivial. 0 not checked. [2022-03-16 22:08:06,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-16 22:08:06,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256526747] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 22:08:06,704 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-16 22:08:06,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-03-16 22:08:06,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639526498] [2022-03-16 22:08:06,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 22:08:06,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 22:08:06,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:08:06,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 22:08:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-16 22:08:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:08:06,706 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:08:06,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 22:08:06,706 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:06,706 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:06,706 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:06,706 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:08:07,312 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3528 transitions and produced 3333 states. [2022-03-16 22:08:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:07,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-16 22:08:07,519 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 [2022-03-16 22:08:07,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 22:08:07,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:08:07,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1373439868, now seen corresponding path program 1 times [2022-03-16 22:08:07,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:08:07,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476889515] [2022-03-16 22:08:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:08:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:08:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:08:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 83893 backedges. 17197 proven. 355 refuted. 0 times theorem prover too weak. 66341 trivial. 0 not checked. [2022-03-16 22:08:07,660 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:08:07,661 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476889515] [2022-03-16 22:08:07,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476889515] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:08:07,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415381567] [2022-03-16 22:08:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:08:07,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:08:07,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:08:07,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 22:08:07,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-16 22:08:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:08:07,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-16 22:08:07,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:08:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 83893 backedges. 3684 proven. 0 refuted. 0 times theorem prover too weak. 80209 trivial. 0 not checked. [2022-03-16 22:08:09,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-16 22:08:09,113 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415381567] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 22:08:09,114 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-16 22:08:09,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-03-16 22:08:09,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424529913] [2022-03-16 22:08:09,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 22:08:09,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 22:08:09,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:08:09,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 22:08:09,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-16 22:08:09,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:08:09,116 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:08:09,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 22:08:09,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:09,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:09,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:09,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:09,116 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:08:09,686 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3492 transitions and produced 3300 states. [2022-03-16 22:08:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:09,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-16 22:08:09,888 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 [2022-03-16 22:08:09,889 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 22:08:09,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:08:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1444071837, now seen corresponding path program 2 times [2022-03-16 22:08:09,890 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:08:09,890 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992793999] [2022-03-16 22:08:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:08:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:08:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:08:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 80366 backedges. 16785 proven. 355 refuted. 0 times theorem prover too weak. 63226 trivial. 0 not checked. [2022-03-16 22:08:10,041 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:08:10,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992793999] [2022-03-16 22:08:10,041 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992793999] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:08:10,041 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168966067] [2022-03-16 22:08:10,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 22:08:10,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:08:10,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:08:10,044 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 22:08:10,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-16 22:08:10,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 22:08:10,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 22:08:10,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-16 22:08:10,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:08:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 80366 backedges. 17329 proven. 168 refuted. 0 times theorem prover too weak. 62869 trivial. 0 not checked. [2022-03-16 22:08:11,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 22:08:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 80366 backedges. 17329 proven. 168 refuted. 0 times theorem prover too weak. 62869 trivial. 0 not checked. [2022-03-16 22:08:12,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168966067] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 22:08:12,880 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 22:08:12,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 4 [2022-03-16 22:08:12,881 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353667263] [2022-03-16 22:08:12,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 22:08:12,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-16 22:08:12,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:08:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-16 22:08:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-16 22:08:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:08:12,883 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:08:12,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 22:08:12,883 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:12,883 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:12,883 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:12,883 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:12,883 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:12,884 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:08:13,547 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3596 transitions and produced 3508 states. [2022-03-16 22:08:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:13,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-16 22:08:13,748 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 [2022-03-16 22:08:13,749 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 22:08:13,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:08:13,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1053517687, now seen corresponding path program 1 times [2022-03-16 22:08:13,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:08:13,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860218531] [2022-03-16 22:08:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:08:13,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:08:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:08:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 77550 backedges. 0 proven. 55219 refuted. 0 times theorem prover too weak. 22331 trivial. 0 not checked. [2022-03-16 22:08:15,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:08:15,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860218531] [2022-03-16 22:08:15,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860218531] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:08:15,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680914682] [2022-03-16 22:08:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:08:15,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:08:15,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:08:15,207 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 22:08:15,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-16 22:08:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:08:15,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 403 conjunts are in the unsatisfiable core [2022-03-16 22:08:15,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:08:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 77550 backedges. 0 proven. 55219 refuted. 0 times theorem prover too weak. 22331 trivial. 0 not checked. [2022-03-16 22:08:19,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 22:08:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 77550 backedges. 0 proven. 55219 refuted. 0 times theorem prover too weak. 22331 trivial. 0 not checked. [2022-03-16 22:08:23,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680914682] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 22:08:23,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 22:08:23,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-03-16 22:08:23,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267595191] [2022-03-16 22:08:23,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 22:08:23,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-16 22:08:23,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:08:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-16 22:08:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-16 22:08:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:08:23,789 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:08:23,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 22:08:23,789 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:23,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:23,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:23,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:23,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:08:23,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-03-16 22:08:23,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.