/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 21:25:29,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 21:25:29,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 21:25:29,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-16 21:25:29,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 21:25:29,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 21:25:29,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 21:25:29,597 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 21:25:29,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 21:25:29,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 21:25:29,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 21:25:29,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 21:25:29,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 21:25:29,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 21:25:29,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 21:25:29,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 21:25:29,626 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 21:25:29,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 21:25:29,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 21:25:29,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 21:25:29,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 21:25:29,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 21:25:29,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 21:25:29,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 21:25:29,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 21:25:29,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 21:25:29,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 21:25:29,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 21:25:29,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 21:25:29,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 21:25:29,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 21:25:29,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 21:25:29,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 21:25:29,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:25:29,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 21:25:29,628 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 21:25:29,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 21:25:29,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 21:25:29,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 21:25:29,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 21:25:29,629 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 21:25:29,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 21:25:29,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 21:25:29,629 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-16 21:25:29,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 21:25:29,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 21:25:29,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 21:25:29,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 21:25:29,844 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 21:25:29,846 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 21:25:29,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl [2022-03-16 21:25:29,847 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl' [2022-03-16 21:25:29,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 21:25:29,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 21:25:29,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 21:25:29,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 21:25:29,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 21:25:29,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,884 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 21:25:29,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 21:25:29,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 21:25:29,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 21:25:29,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 21:25:29,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 21:25:29,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 21:25:29,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 21:25:29,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 21:25:29,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/1) ... [2022-03-16 21:25:29,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:25:29,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:25:29,924 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 21:25:29,946 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 21:25:29,958 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 21:25:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 21:25:29,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 21:25:29,959 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T1 given in one single declaration [2022-03-16 21:25:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure T1 [2022-03-16 21:25:29,959 INFO L138 BoogieDeclarations]: Found implementation of procedure T1 [2022-03-16 21:25:29,959 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T2 given in one single declaration [2022-03-16 21:25:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure T2 [2022-03-16 21:25:29,959 INFO L138 BoogieDeclarations]: Found implementation of procedure T2 [2022-03-16 21:25:29,960 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 21:25:29,994 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 21:25:29,996 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 21:25:30,074 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 21:25:30,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 21:25:30,080 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 21:25:30,083 INFO L202 PluginConnector]: Adding new model MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:25:30 BoogieIcfgContainer [2022-03-16 21:25:30,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 21:25:30,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 21:25:30,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 21:25:30,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 21:25:30,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:25:29" (1/2) ... [2022-03-16 21:25:30,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776c376f and model type MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:25:30, skipping insertion in model container [2022-03-16 21:25:30,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:25:30" (2/2) ... [2022-03-16 21:25:30,091 INFO L111 eAbstractionObserver]: Analyzing ICFG MirabelleConcurrentIncrement.bpl [2022-03-16 21:25:30,102 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 21:25:30,102 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 21:25:30,102 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 21:25:30,103 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 21:25:30,134 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-16 21:25:30,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 21:25:30,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:25:30,180 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 21:25:30,181 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 21:25:30,216 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 21:25:30,236 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 21:25:30,237 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 21:25:30,415 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 120 transitions and produced 108 states. [2022-03-16 21:25:30,419 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:25:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:25:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash 112687408, now seen corresponding path program 1 times [2022-03-16 21:25:30,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:25:30,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426277018] [2022-03-16 21:25:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:25:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:25:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:25:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 23 proven. 141 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-16 21:25:30,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:25:30,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426277018] [2022-03-16 21:25:30,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426277018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:25:30,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449814912] [2022-03-16 21:25:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:25:30,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:25:30,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:25:30,787 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 21:25:30,837 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 21:25:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:25:30,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-16 21:25:30,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:25:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 121 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-16 21:25:31,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:25:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 121 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-16 21:25:31,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449814912] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:25:31,443 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:25:31,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 16] total 27 [2022-03-16 21:25:31,446 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898767283] [2022-03-16 21:25:31,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:25:31,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-16 21:25:31,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:25:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-16 21:25:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-03-16 21:25:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:31,485 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:25:31,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 27 states have internal predecessors, (85), 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 21:25:31,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:32,024 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 172 transitions and produced 148 states. [2022-03-16 21:25:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-16 21:25:32,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-16 21:25:32,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-03-16 21:25:32,240 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:25:32,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:25:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash -352826046, now seen corresponding path program 2 times [2022-03-16 21:25:32,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:25:32,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893591396] [2022-03-16 21:25:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:25:32,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:25:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:25:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 247 proven. 100 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-03-16 21:25:32,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:25:32,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893591396] [2022-03-16 21:25:32,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893591396] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:25:32,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176267227] [2022-03-16 21:25:32,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 21:25:32,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:25:32,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:25:32,515 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 21:25:32,516 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 21:25:32,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 21:25:32,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:25:32,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-16 21:25:32,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:25:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 247 proven. 100 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-03-16 21:25:32,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:25:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 247 proven. 100 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-03-16 21:25:32,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176267227] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:25:32,842 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:25:32,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2022-03-16 21:25:32,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264394930] [2022-03-16 21:25:32,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:25:32,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-16 21:25:32,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:25:32,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-16 21:25:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-03-16 21:25:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:32,845 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:25:32,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 24 states have internal predecessors, (58), 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 21:25:32,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2022-03-16 21:25:32,846 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:33,147 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 248 transitions and produced 211 states. [2022-03-16 21:25:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-16 21:25:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:25:33,169 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 21:25:33,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:25:33,361 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:25:33,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:25:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1905815420, now seen corresponding path program 3 times [2022-03-16 21:25:33,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:25:33,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046065005] [2022-03-16 21:25:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:25:33,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:25:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:25:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 322 proven. 474 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-03-16 21:25:33,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:25:33,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046065005] [2022-03-16 21:25:33,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046065005] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:25:33,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533391527] [2022-03-16 21:25:33,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-16 21:25:33,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:25:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:25:33,847 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 21:25:33,848 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 21:25:33,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-16 21:25:33,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:25:33,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-16 21:25:33,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:25:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2022-03-16 21:25:34,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-16 21:25:34,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533391527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:25:34,163 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-16 21:25:34,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [37] total 43 [2022-03-16 21:25:34,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573656026] [2022-03-16 21:25:34,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:25:34,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-16 21:25:34,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:25:34,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-16 21:25:34,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2022-03-16 21:25:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:34,165 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:25:34,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 21:25:34,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2022-03-16 21:25:34,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:25:34,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:35,922 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10592 transitions and produced 7317 states. [2022-03-16 21:25:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-16 21:25:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:25:35,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 21:25:35,944 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 21:25:36,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:25:36,142 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:25:36,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:25:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1842752768, now seen corresponding path program 1 times [2022-03-16 21:25:36,143 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:25:36,143 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635115223] [2022-03-16 21:25:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:25:36,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:25:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:25:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 19674 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19674 trivial. 0 not checked. [2022-03-16 21:25:36,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:25:36,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635115223] [2022-03-16 21:25:36,340 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635115223] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:25:36,340 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 21:25:36,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 21:25:36,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232678985] [2022-03-16 21:25:36,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:25:36,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 21:25:36,341 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:25:36,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 21:25:36,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 21:25:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:36,342 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:25:36,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 21:25:36,342 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2022-03-16 21:25:36,342 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:25:36,342 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-16 21:25:36,342 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:37,444 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10287 transitions and produced 7012 states. [2022-03-16 21:25:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-16 21:25:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:25:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 21:25:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:25:37,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-16 21:25:37,445 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:25:37,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:25:37,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1842751838, now seen corresponding path program 4 times [2022-03-16 21:25:37,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:25:37,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517105085] [2022-03-16 21:25:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:25:37,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:25:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:25:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 19674 backedges. 3507 proven. 14508 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2022-03-16 21:25:38,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:25:38,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517105085] [2022-03-16 21:25:38,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517105085] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:25:38,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393652097] [2022-03-16 21:25:38,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-16 21:25:38,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:25:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:25:38,637 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 21:25:38,638 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 21:25:38,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-16 21:25:38,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:25:38,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 200 conjunts are in the unsatisfiable core [2022-03-16 21:25:38,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:25:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 19674 backedges. 4025 proven. 13736 refuted. 0 times theorem prover too weak. 1913 trivial. 0 not checked. [2022-03-16 21:25:39,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:25:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 19674 backedges. 4025 proven. 13736 refuted. 0 times theorem prover too weak. 1913 trivial. 0 not checked. [2022-03-16 21:25:40,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393652097] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:25:40,469 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:25:40,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 26, 26] total 49 [2022-03-16 21:25:40,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543810200] [2022-03-16 21:25:40,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:25:40,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-16 21:25:40,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:25:40,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-16 21:25:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=1722, Unknown=0, NotChecked=0, Total=2450 [2022-03-16 21:25:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:40,477 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:25:40,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.46) internal successors, (173), 49 states have internal predecessors, (173), 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 21:25:40,477 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2022-03-16 21:25:40,477 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:25:40,477 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-16 21:25:40,477 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:25:40,477 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:25:53,120 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 88653 transitions and produced 53780 states. [2022-03-16 21:25:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-16 21:25:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:25:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 21:25:53,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:25:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-03-16 21:25:53,146 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 21:25:53,323 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 21:25:53,324 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:25:53,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:25:53,325 INFO L85 PathProgramCache]: Analyzing trace with hash -609213282, now seen corresponding path program 5 times [2022-03-16 21:25:53,325 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:25:53,325 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333827667] [2022-03-16 21:25:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:25:53,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:26:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:26:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 354580 backedges. 101063 proven. 236061 refuted. 0 times theorem prover too weak. 17456 trivial. 0 not checked. [2022-03-16 21:26:08,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:26:08,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333827667] [2022-03-16 21:26:08,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333827667] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:26:08,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171740889] [2022-03-16 21:26:08,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-16 21:26:08,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:26:08,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:26:08,962 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 21:26:08,964 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 21:26:13,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 514 check-sat command(s) [2022-03-16 21:26:13,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:26:14,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 844 conjunts are in the unsatisfiable core [2022-03-16 21:26:14,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:26:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 354580 backedges. 102316 proven. 234472 refuted. 0 times theorem prover too weak. 17792 trivial. 0 not checked. [2022-03-16 21:26:17,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:26:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 354580 backedges. 102316 proven. 234472 refuted. 0 times theorem prover too weak. 17792 trivial. 0 not checked. [2022-03-16 21:26:20,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171740889] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:26:20,453 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:26:20,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 40, 40] total 67 [2022-03-16 21:26:20,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244634932] [2022-03-16 21:26:20,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:26:20,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-03-16 21:26:20,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:26:20,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-03-16 21:26:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=3113, Unknown=0, NotChecked=0, Total=4556 [2022-03-16 21:26:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:26:20,459 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:26:20,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.514705882352941) internal successors, (239), 67 states have internal predecessors, (239), 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 21:26:20,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2022-03-16 21:26:20,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:26:20,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-16 21:26:20,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:26:20,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 161 states. [2022-03-16 21:26:20,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:27:09,362 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 338507 transitions and produced 203987 states. [2022-03-16 21:27:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-16 21:27:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:27:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 21:27:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:27:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-03-16 21:27:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 387 states. [2022-03-16 21:27:09,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-16 21:27:09,564 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 21:27:09,565 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:27:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:27:09,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1838064938, now seen corresponding path program 6 times [2022-03-16 21:27:09,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:27:09,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922605450] [2022-03-16 21:27:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:27:09,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:29:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:29:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2093220 backedges. 680717 proven. 1351879 refuted. 0 times theorem prover too weak. 60624 trivial. 0 not checked. [2022-03-16 21:29:50,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:29:50,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922605450] [2022-03-16 21:29:50,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922605450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:29:50,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820577456] [2022-03-16 21:29:50,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-16 21:29:50,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:29:50,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:29:50,463 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 21:29:50,464 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 21:29:50,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-16 21:29:50,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:29:50,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-16 21:29:50,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:29:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2093220 backedges. 6115 proven. 0 refuted. 0 times theorem prover too weak. 2087105 trivial. 0 not checked. [2022-03-16 21:29:54,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-16 21:29:54,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820577456] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 21:29:54,727 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-16 21:29:54,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [76] total 82 [2022-03-16 21:29:54,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032969781] [2022-03-16 21:29:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 21:29:54,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-16 21:29:54,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:29:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-16 21:29:54,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1758, Invalid=4884, Unknown=0, NotChecked=0, Total=6642 [2022-03-16 21:29:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:29:54,734 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:29:54,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-16 21:29:54,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2022-03-16 21:29:54,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:29:54,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-03-16 21:29:54,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:29:54,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 162 states. [2022-03-16 21:29:54,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 387 states. [2022-03-16 21:29:54,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:30:39,715 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 424616 transitions and produced 257580 states. [2022-03-16 21:30:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-16 21:30:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-16 21:30:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-16 21:30:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 21:30:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-03-16 21:30:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 388 states. [2022-03-16 21:30:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-16 21:30:39,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-16 21:30:39,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:30:39,919 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:30:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:30:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1391014886, now seen corresponding path program 7 times [2022-03-16 21:30:39,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:30:39,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675891139] [2022-03-16 21:30:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:30:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms