/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/clever.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 21:34:06,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 21:34:06,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 21:34:06,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-16 21:34:06,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-16 21:34:06,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-16 21:34:06,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-16 21:34:06,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-16 21:34:06,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-16 21:34:06,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-16 21:34:06,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-16 21:34:06,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-16 21:34:06,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 21:34:06,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 21:34:06,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 21:34:06,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 21:34:06,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 21:34:06,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 21:34:06,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 21:34:06,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 21:34:06,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 21:34:06,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 21:34:06,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 21:34:06,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 21:34:06,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-16 21:34:06,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 21:34:06,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 21:34:06,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 21:34:06,983 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 21:34:07,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 21:34:07,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 21:34:07,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 21:34:07,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 21:34:07,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 21:34:07,011 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 21:34:07,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 21:34:07,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 21:34:07,012 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 21:34:07,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 21:34:07,012 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 21:34:07,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 21:34:07,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 21:34:07,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 21:34:07,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 21:34:07,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 21:34:07,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:34:07,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 21:34:07,014 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 21:34:07,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 21:34:07,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 21:34:07,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 21:34:07,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 21:34:07,015 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 21:34:07,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 21:34:07,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 21:34:07,015 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-16 21:34:07,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 21:34:07,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 21:34:07,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 21:34:07,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 21:34:07,183 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 21:34:07,184 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 21:34:07,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/clever.wvr.bpl [2022-03-16 21:34:07,185 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/clever.wvr.bpl' [2022-03-16 21:34:07,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 21:34:07,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 21:34:07,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 21:34:07,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 21:34:07,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 21:34:07,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,224 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 21:34:07,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 21:34:07,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 21:34:07,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 21:34:07,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 21:34:07,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 21:34:07,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 21:34:07,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 21:34:07,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 21:34:07,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/1) ... [2022-03-16 21:34:07,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 21:34:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:34:07,280 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 21:34:07,284 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 21:34:07,310 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-16 21:34:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-16 21:34:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-16 21:34:07,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-16 21:34:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-16 21:34:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-16 21:34:07,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 21:34:07,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 21:34:07,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 21:34:07,312 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 21:34:07,348 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 21:34:07,352 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 21:34:07,470 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 21:34:07,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 21:34:07,488 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 21:34:07,490 INFO L202 PluginConnector]: Adding new model clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:34:07 BoogieIcfgContainer [2022-03-16 21:34:07,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 21:34:07,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 21:34:07,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 21:34:07,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 21:34:07,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:34:07" (1/2) ... [2022-03-16 21:34:07,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4171de91 and model type clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:34:07, skipping insertion in model container [2022-03-16 21:34:07,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:34:07" (2/2) ... [2022-03-16 21:34:07,499 INFO L111 eAbstractionObserver]: Analyzing ICFG clever.wvr.bpl [2022-03-16 21:34:07,506 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 21:34:07,506 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 21:34:07,506 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 21:34:07,506 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 21:34:07,549 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-16 21:34:07,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 21:34:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:34:07,617 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 21:34:07,618 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 21:34:07,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 21:34:07,663 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 21:34:07,663 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-16 21:34:08,009 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 455 transitions and produced 403 states. [2022-03-16 21:34:08,012 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:34:08,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:34:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash -317061140, now seen corresponding path program 1 times [2022-03-16 21:34:08,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:34:08,023 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517842652] [2022-03-16 21:34:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:34:08,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:34:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:34:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3212 backedges. 641 proven. 2416 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-03-16 21:34:09,452 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:34:09,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517842652] [2022-03-16 21:34:09,452 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517842652] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:34:09,452 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138392544] [2022-03-16 21:34:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:34:09,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:34:09,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:34:09,463 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 21:34:09,495 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 21:34:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:34:09,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-16 21:34:09,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:34:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3212 backedges. 1408 proven. 1797 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-16 21:34:11,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:34:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3212 backedges. 1353 proven. 1852 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-16 21:34:12,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138392544] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:34:12,590 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:34:12,590 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 47, 47] total 119 [2022-03-16 21:34:12,592 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460778918] [2022-03-16 21:34:12,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:34:12,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-03-16 21:34:12,598 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:34:12,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-03-16 21:34:12,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1906, Invalid=12136, Unknown=0, NotChecked=0, Total=14042 [2022-03-16 21:34:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:34:12,625 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:34:12,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.596638655462185) internal successors, (428), 119 states have internal predecessors, (428), 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 21:34:12,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:34:19,228 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10019 transitions and produced 8244 states. [2022-03-16 21:34:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-16 21:34:19,246 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 21:34:19,443 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 21:34:19,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:34:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:34:19,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1734910979, now seen corresponding path program 2 times [2022-03-16 21:34:19,445 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:34:19,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063886368] [2022-03-16 21:34:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:34:19,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:34:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:34:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2102186 backedges. 1023906 proven. 166220 refuted. 0 times theorem prover too weak. 912060 trivial. 0 not checked. [2022-03-16 21:34:31,400 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:34:31,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063886368] [2022-03-16 21:34:31,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063886368] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:34:31,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910096015] [2022-03-16 21:34:31,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 21:34:31,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:34:31,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:34:31,402 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 21:34:31,406 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 21:34:32,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 21:34:32,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:34:32,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 6187 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-16 21:34:32,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:34:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2102186 backedges. 202909 proven. 3744 refuted. 0 times theorem prover too weak. 1895533 trivial. 0 not checked. [2022-03-16 21:34:37,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:34:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2102186 backedges. 202827 proven. 3826 refuted. 0 times theorem prover too weak. 1895533 trivial. 0 not checked. [2022-03-16 21:34:42,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910096015] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:34:42,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:34:42,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 63, 63] total 154 [2022-03-16 21:34:42,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850492870] [2022-03-16 21:34:42,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:34:42,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2022-03-16 21:34:42,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:34:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2022-03-16 21:34:42,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3418, Invalid=20144, Unknown=0, NotChecked=0, Total=23562 [2022-03-16 21:34:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:34:42,395 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:34:42,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 3.227272727272727) internal successors, (497), 154 states have internal predecessors, (497), 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 21:34:42,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 98 states. [2022-03-16 21:34:42,397 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:34:46,290 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 11699 transitions and produced 9636 states. [2022-03-16 21:34:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-03-16 21:34:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:34:46,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-16 21:34:46,503 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 21:34:46,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:34:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:34:46,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1785439185, now seen corresponding path program 3 times [2022-03-16 21:34:46,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:34:46,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386962705] [2022-03-16 21:34:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:34:46,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:34:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:35:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2913521 backedges. 1420570 proven. 149427 refuted. 0 times theorem prover too weak. 1343524 trivial. 0 not checked. [2022-03-16 21:35:01,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:35:01,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386962705] [2022-03-16 21:35:01,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386962705] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:35:01,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542461176] [2022-03-16 21:35:01,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-16 21:35:01,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:35:01,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:35:01,480 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 21:35:01,481 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 21:35:04,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 455 check-sat command(s) [2022-03-16 21:35:04,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:35:05,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 3981 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-16 21:35:05,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:35:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2913521 backedges. 1492948 proven. 58095 refuted. 0 times theorem prover too weak. 1362478 trivial. 0 not checked. [2022-03-16 21:35:09,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:35:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2913521 backedges. 1439522 proven. 111521 refuted. 0 times theorem prover too weak. 1362478 trivial. 0 not checked. [2022-03-16 21:35:16,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542461176] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:35:16,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:35:16,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 69] total 171 [2022-03-16 21:35:16,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059952619] [2022-03-16 21:35:16,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:35:16,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2022-03-16 21:35:16,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:35:16,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2022-03-16 21:35:16,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3609, Invalid=25461, Unknown=0, NotChecked=0, Total=29070 [2022-03-16 21:35:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:35:16,186 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:35:16,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 171 states have (on average 3.239766081871345) internal successors, (554), 171 states have internal predecessors, (554), 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 21:35:16,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 98 states. [2022-03-16 21:35:16,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:35:16,186 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:35:19,813 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1243 transitions and produced 1103 states. [2022-03-16 21:35:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:35:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:35:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:35:19,839 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 21:35:20,027 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 21:35:20,028 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:35:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:35:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash 610275444, now seen corresponding path program 4 times [2022-03-16 21:35:20,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:35:20,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313355630] [2022-03-16 21:35:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:35:20,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:35:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:35:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 28880 backedges. 2749 proven. 24147 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-03-16 21:35:23,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:35:23,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313355630] [2022-03-16 21:35:23,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313355630] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:35:23,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663160253] [2022-03-16 21:35:23,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-16 21:35:23,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:35:23,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:35:23,407 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 21:35:23,409 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 21:35:23,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-16 21:35:23,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:35:23,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 108 conjunts are in the unsatisfiable core [2022-03-16 21:35:23,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:35:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 28880 backedges. 15606 proven. 11655 refuted. 0 times theorem prover too weak. 1619 trivial. 0 not checked. [2022-03-16 21:35:29,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:35:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 28880 backedges. 15458 proven. 11803 refuted. 0 times theorem prover too weak. 1619 trivial. 0 not checked. [2022-03-16 21:35:32,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663160253] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:35:32,481 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:35:32,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 109, 109] total 274 [2022-03-16 21:35:32,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481788008] [2022-03-16 21:35:32,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:35:32,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 274 states [2022-03-16 21:35:32,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:35:32,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 274 interpolants. [2022-03-16 21:35:32,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9470, Invalid=65332, Unknown=0, NotChecked=0, Total=74802 [2022-03-16 21:35:32,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:35:32,496 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:35:32,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 274 states, 274 states have (on average 3.259124087591241) internal successors, (893), 274 states have internal predecessors, (893), 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 21:35:32,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:35:32,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:35:32,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:35:32,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:35:45,975 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 20745 transitions and produced 17050 states. [2022-03-16 21:35:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:35:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:35:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:35:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-03-16 21:35:45,996 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 21:35:46,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:35:46,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:35:46,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:35:46,196 INFO L85 PathProgramCache]: Analyzing trace with hash -856258657, now seen corresponding path program 5 times [2022-03-16 21:35:46,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:35:46,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154861570] [2022-03-16 21:35:46,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:35:46,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:36:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:36:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9497670 backedges. 4627036 proven. 731598 refuted. 0 times theorem prover too weak. 4139036 trivial. 0 not checked. [2022-03-16 21:36:54,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:36:54,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154861570] [2022-03-16 21:36:54,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154861570] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:36:54,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069813637] [2022-03-16 21:36:54,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-16 21:36:54,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:36:54,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:36:54,710 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 21:36:54,711 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 21:36:58,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 357 check-sat command(s) [2022-03-16 21:36:58,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:36:58,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 3872 conjuncts, 120 conjunts are in the unsatisfiable core [2022-03-16 21:36:58,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:37:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9497670 backedges. 5692962 proven. 107107 refuted. 0 times theorem prover too weak. 3697601 trivial. 0 not checked. [2022-03-16 21:37:08,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:37:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9497670 backedges. 5601080 proven. 198989 refuted. 0 times theorem prover too weak. 3697601 trivial. 0 not checked. [2022-03-16 21:37:17,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069813637] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:37:17,343 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:37:17,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 121, 121] total 181 [2022-03-16 21:37:17,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048932379] [2022-03-16 21:37:17,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:37:17,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 181 states [2022-03-16 21:37:17,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:37:17,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2022-03-16 21:37:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7321, Invalid=25259, Unknown=0, NotChecked=0, Total=32580 [2022-03-16 21:37:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:37:17,374 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:37:17,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 181 states, 181 states have (on average 3.2320441988950277) internal successors, (585), 181 states have internal predecessors, (585), 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 21:37:17,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:37:17,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:37:17,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:37:17,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 191 states. [2022-03-16 21:37:17,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:37:23,222 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2296 transitions and produced 2087 states. [2022-03-16 21:37:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:37:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:37:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:37:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-03-16 21:37:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2022-03-16 21:37:23,243 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 21:37:23,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:37:23,444 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:37:23,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:37:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2029978458, now seen corresponding path program 6 times [2022-03-16 21:37:23,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:37:23,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451047384] [2022-03-16 21:37:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:37:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:37:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:37:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 117579 backedges. 16412 proven. 95975 refuted. 0 times theorem prover too weak. 5192 trivial. 0 not checked. [2022-03-16 21:37:32,404 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:37:32,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451047384] [2022-03-16 21:37:32,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451047384] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:37:32,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673287923] [2022-03-16 21:37:32,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-16 21:37:32,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:37:32,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:37:32,406 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 21:37:32,407 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 21:37:32,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 148 check-sat command(s) [2022-03-16 21:37:32,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:37:32,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 122 conjunts are in the unsatisfiable core [2022-03-16 21:37:32,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:37:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 117579 backedges. 63945 proven. 33258 refuted. 0 times theorem prover too weak. 20376 trivial. 0 not checked. [2022-03-16 21:37:40,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:37:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 117579 backedges. 46441 proven. 50762 refuted. 0 times theorem prover too weak. 20376 trivial. 0 not checked. [2022-03-16 21:37:46,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673287923] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:37:46,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:37:46,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [237, 123, 123] total 419 [2022-03-16 21:37:46,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957152124] [2022-03-16 21:37:46,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:37:46,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2022-03-16 21:37:46,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:37:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2022-03-16 21:37:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16163, Invalid=158979, Unknown=0, NotChecked=0, Total=175142 [2022-03-16 21:37:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:37:46,335 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:37:46,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 419 states, 419 states have (on average 3.047732696897375) internal successors, (1277), 419 states have internal predecessors, (1277), 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 21:37:46,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:37:46,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:37:46,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:37:46,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 191 states. [2022-03-16 21:37:46,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 241 states. [2022-03-16 21:37:46,336 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:37:59,635 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1958 transitions and produced 1746 states. [2022-03-16 21:37:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:37:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:37:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:37:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2022-03-16 21:37:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2022-03-16 21:37:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-03-16 21:37:59,654 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 21:37:59,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:37:59,853 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:37:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:37:59,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1862538604, now seen corresponding path program 7 times [2022-03-16 21:37:59,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:37:59,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609010657] [2022-03-16 21:37:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:37:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:38:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:38:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 75035 backedges. 7716 proven. 61393 refuted. 0 times theorem prover too weak. 5926 trivial. 0 not checked. [2022-03-16 21:38:05,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:38:05,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609010657] [2022-03-16 21:38:05,426 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609010657] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:38:05,426 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754100852] [2022-03-16 21:38:05,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-16 21:38:05,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:38:05,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:38:05,427 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 21:38:05,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-16 21:38:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:38:05,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 166 conjunts are in the unsatisfiable core [2022-03-16 21:38:05,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:38:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 75035 backedges. 41471 proven. 28192 refuted. 0 times theorem prover too weak. 5372 trivial. 0 not checked. [2022-03-16 21:38:15,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:38:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 75035 backedges. 41242 proven. 28421 refuted. 0 times theorem prover too weak. 5372 trivial. 0 not checked. [2022-03-16 21:38:21,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754100852] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:38:21,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:38:21,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 167, 167] total 421 [2022-03-16 21:38:21,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907585481] [2022-03-16 21:38:21,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:38:21,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 421 states [2022-03-16 21:38:21,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:38:21,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 421 interpolants. [2022-03-16 21:38:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23453, Invalid=153367, Unknown=0, NotChecked=0, Total=176820 [2022-03-16 21:38:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:38:21,167 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:38:21,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 421 states, 421 states have (on average 3.175771971496437) internal successors, (1337), 421 states have internal predecessors, (1337), 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 21:38:21,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:38:21,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:38:21,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:38:21,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 258 states. [2022-03-16 21:38:21,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 241 states. [2022-03-16 21:38:21,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 260 states. [2022-03-16 21:38:21,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:38:47,536 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 31471 transitions and produced 25856 states. [2022-03-16 21:38:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:38:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:38:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:38:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2022-03-16 21:38:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2022-03-16 21:38:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2022-03-16 21:38:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-03-16 21:38:47,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-16 21:38:47,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-03-16 21:38:47,748 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:38:47,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:38:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash -550927357, now seen corresponding path program 8 times [2022-03-16 21:38:47,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:38:47,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261443502] [2022-03-16 21:38:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:38:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:41:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 21:42:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 22223821 backedges. 10827749 proven. 1697713 refuted. 0 times theorem prover too weak. 9698359 trivial. 0 not checked. [2022-03-16 21:42:10,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 21:42:10,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261443502] [2022-03-16 21:42:10,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261443502] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 21:42:10,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888726795] [2022-03-16 21:42:10,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 21:42:10,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:42:10,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 21:42:10,281 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-16 21:42:10,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-16 21:42:13,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 21:42:13,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 21:42:13,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 19517 conjuncts, 186 conjunts are in the unsatisfiable core [2022-03-16 21:42:13,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 21:42:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 22223821 backedges. 2033242 proven. 37131 refuted. 0 times theorem prover too weak. 20153448 trivial. 0 not checked. [2022-03-16 21:42:32,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 21:42:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 22223821 backedges. 2032974 proven. 37399 refuted. 0 times theorem prover too weak. 20153448 trivial. 0 not checked. [2022-03-16 21:42:48,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888726795] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 21:42:48,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 21:42:48,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [184, 187, 187] total 464 [2022-03-16 21:42:48,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937572629] [2022-03-16 21:42:48,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 21:42:48,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 464 states [2022-03-16 21:42:48,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 21:42:48,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 464 interpolants. [2022-03-16 21:42:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30419, Invalid=184413, Unknown=0, NotChecked=0, Total=214832 [2022-03-16 21:42:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:42:48,270 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 21:42:48,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 464 states, 464 states have (on average 3.0754310344827585) internal successors, (1427), 464 states have internal predecessors, (1427), 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 21:42:48,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:42:48,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:42:48,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:42:48,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 258 states. [2022-03-16 21:42:48,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 241 states. [2022-03-16 21:42:48,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 261 states. [2022-03-16 21:42:48,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 284 states. [2022-03-16 21:42:48,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 21:43:05,003 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 33151 transitions and produced 27248 states. [2022-03-16 21:43:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-03-16 21:43:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-03-16 21:43:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-16 21:43:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2022-03-16 21:43:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2022-03-16 21:43:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2022-03-16 21:43:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-03-16 21:43:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2022-03-16 21:43:05,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-16 21:43:05,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 21:43:05,208 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-16 21:43:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 21:43:05,210 INFO L85 PathProgramCache]: Analyzing trace with hash -822240687, now seen corresponding path program 9 times [2022-03-16 21:43:05,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 21:43:05,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62604847] [2022-03-16 21:43:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 21:43:05,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 21:46:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat