/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/popl20/nonblocking-cntr-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-20 11:39:20,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 11:39:20,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 11:39:20,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 11:39:20,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 11:39:20,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 11:39:20,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 11:39:20,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 11:39:20,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 11:39:20,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 11:39:20,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 11:39:20,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 11:39:20,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 11:39:20,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 11:39:20,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 11:39:20,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 11:39:20,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 11:39:20,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 11:39:20,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 11:39:20,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 11:39:20,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 11:39:20,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 11:39:20,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 11:39:20,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 11:39:20,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-20 11:39:20,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 11:39:20,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 11:39:20,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 11:39:20,258 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 [2022-02-20 11:39:20,291 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 11:39:20,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 11:39:20,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 11:39:20,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 11:39:20,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 11:39:20,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 11:39:20,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 11:39:20,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 11:39:20,293 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 11:39:20,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 11:39:20,294 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 11:39:20,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 11:39:20,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 11:39:20,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 11:39:20,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 11:39:20,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 11:39:20,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 11:39:20,295 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 11:39:20,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 11:39:20,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 11:39:20,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 11:39:20,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 11:39:20,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 11:39:20,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-20 11:39:20,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 11:39:20,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 11:39:20,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 11:39:20,296 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-20 11:39:20,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 11:39:20,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 11:39:20,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 11:39:20,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 11:39:20,297 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 11:39:20,297 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-20 11:39:20,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 11:39:20,297 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-20 11:39:20,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-20 11:39:20,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 11:39:20,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 11:39:20,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 11:39:20,522 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-20 11:39:20,523 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-20 11:39:20,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/nonblocking-cntr-alt.wvr.bpl [2022-02-20 11:39:20,524 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/nonblocking-cntr-alt.wvr.bpl' [2022-02-20 11:39:20,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 11:39:20,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-20 11:39:20,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 11:39:20,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 11:39:20,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 11:39:20,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,566 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-20 11:39:20,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 11:39:20,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 11:39:20,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 11:39:20,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 11:39:20,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 11:39:20,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 11:39:20,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 11:39:20,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 11:39:20,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/1) ... [2022-02-20 11:39:20,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 11:39:20,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 11:39:20,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 11:39:20,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 11:39:20,660 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-20 11:39:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-20 11:39:20,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-20 11:39:20,661 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-20 11:39:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-20 11:39:20,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-20 11:39:20,661 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-20 11:39:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 11:39:20,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 11:39:20,662 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-20 11:39:20,705 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 11:39:20,707 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 11:39:20,807 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 11:39:20,833 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 11:39:20,834 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 11:39:20,840 INFO L202 PluginConnector]: Adding new model nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:39:20 BoogieIcfgContainer [2022-02-20 11:39:20,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 11:39:20,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 11:39:20,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 11:39:20,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 11:39:20,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:39:20" (1/2) ... [2022-02-20 11:39:20,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220b8844 and model type nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:39:20, skipping insertion in model container [2022-02-20 11:39:20,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-cntr-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:39:20" (2/2) ... [2022-02-20 11:39:20,848 INFO L111 eAbstractionObserver]: Analyzing ICFG nonblocking-cntr-alt.wvr.bpl [2022-02-20 11:39:20,855 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-20 11:39:20,856 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 11:39:20,856 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 11:39:20,856 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-20 11:39:20,902 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-20 11:39:20,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-20 11:39:20,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 11:39:20,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-20 11:39:20,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-20 11:39:21,014 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 11:39:21,028 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 [2022-02-20 11:39:21,028 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-20 11:39:21,261 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 154 transitions and produced 140 states. [2022-02-20 11:39:21,263 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 11:39:21,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 11:39:21,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1567397253, now seen corresponding path program 1 times [2022-02-20 11:39:21,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 11:39:21,272 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102351831] [2022-02-20 11:39:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 11:39:21,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 11:39:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 11:39:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 132 proven. 169 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-20 11:39:22,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 11:39:22,811 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102351831] [2022-02-20 11:39:22,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102351831] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 11:39:22,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594654464] [2022-02-20 11:39:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 11:39:22,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 11:39:22,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 11:39:22,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 11:39:22,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-20 11:39:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 11:39:22,911 WARN L261 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 101 conjunts are in the unsatisfiable core [2022-02-20 11:39:22,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 11:39:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 11:39:24,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 11:39:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 6 proven. 299 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 11:39:26,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594654464] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 11:39:26,710 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 11:39:26,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 28] total 79 [2022-02-20 11:39:26,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198642009] [2022-02-20 11:39:26,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 11:39:26,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-20 11:39:26,717 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 11:39:26,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-20 11:39:26,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1052, Invalid=5268, Unknown=0, NotChecked=0, Total=6320 [2022-02-20 11:39:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:39:26,738 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 11:39:26,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.125) internal successors, (170), 79 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 11:39:26,740 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:39:36,113 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 655 transitions and produced 553 states. [2022-02-20 11:39:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-20 11:39:36,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-20 11:39:36,315 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 [2022-02-20 11:39:36,315 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 11:39:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 11:39:36,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1158601223, now seen corresponding path program 2 times [2022-02-20 11:39:36,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 11:39:36,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2298986] [2022-02-20 11:39:36,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 11:39:36,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 11:39:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 11:39:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 628 proven. 111 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-20 11:39:37,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 11:39:37,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2298986] [2022-02-20 11:39:37,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2298986] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 11:39:37,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632302055] [2022-02-20 11:39:37,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-20 11:39:37,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 11:39:37,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 11:39:37,262 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 11:39:37,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-20 11:39:37,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-20 11:39:37,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 11:39:37,317 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 133 conjunts are in the unsatisfiable core [2022-02-20 11:39:37,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 11:39:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 0 proven. 745 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 11:39:39,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 11:39:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 0 proven. 745 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 11:39:41,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632302055] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 11:39:41,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 11:39:41,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 39, 36] total 101 [2022-02-20 11:39:41,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4411775] [2022-02-20 11:39:41,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 11:39:41,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-20 11:39:41,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 11:39:41,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-20 11:39:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2716, Invalid=7586, Unknown=0, NotChecked=0, Total=10302 [2022-02-20 11:39:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:39:41,459 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 11:39:41,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.107843137254902) internal successors, (215), 101 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 11:39:41,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 128 states. [2022-02-20 11:39:41,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:39:54,463 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 4818 transitions and produced 3804 states. [2022-02-20 11:39:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-20 11:39:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-20 11:39:54,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-20 11:39:54,664 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 [2022-02-20 11:39:54,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 11:39:54,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 11:39:54,665 INFO L85 PathProgramCache]: Analyzing trace with hash 540099553, now seen corresponding path program 3 times [2022-02-20 11:39:54,665 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 11:39:54,665 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869856914] [2022-02-20 11:39:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 11:39:54,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 11:39:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 11:39:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 1300 proven. 636 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-20 11:39:55,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 11:39:55,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869856914] [2022-02-20 11:39:55,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869856914] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 11:39:55,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518994490] [2022-02-20 11:39:55,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-20 11:39:55,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 11:39:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 11:39:55,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 11:39:55,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-20 11:39:55,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2022-02-20 11:39:55,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 11:39:55,906 WARN L261 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 201 conjunts are in the unsatisfiable core [2022-02-20 11:39:55,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 11:39:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 0 proven. 1952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 11:39:59,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 11:40:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 15 proven. 1927 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-20 11:40:01,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518994490] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 11:40:01,850 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 11:40:01,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 56, 48] total 142 [2022-02-20 11:40:01,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332310762] [2022-02-20 11:40:01,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 11:40:01,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-02-20 11:40:01,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 11:40:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-02-20 11:40:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5312, Invalid=14994, Unknown=0, NotChecked=0, Total=20306 [2022-02-20 11:40:01,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:40:01,856 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 11:40:01,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.1188811188811187) internal successors, (303), 142 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 11:40:01,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 129 states. [2022-02-20 11:40:01,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 130 states. [2022-02-20 11:40:01,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:40:19,315 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 7178 transitions and produced 5634 states. [2022-02-20 11:40:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-20 11:40:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-20 11:40:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-02-20 11:40:19,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-20 11:40:19,516 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 [2022-02-20 11:40:19,517 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 11:40:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 11:40:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1101006239, now seen corresponding path program 4 times [2022-02-20 11:40:19,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 11:40:19,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722504606] [2022-02-20 11:40:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 11:40:19,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 11:40:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 11:40:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2720 backedges. 2213 proven. 497 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-02-20 11:40:21,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 11:40:21,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722504606] [2022-02-20 11:40:21,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722504606] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 11:40:21,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365624305] [2022-02-20 11:40:21,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-20 11:40:21,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 11:40:21,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 11:40:21,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 11:40:21,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-20 11:40:21,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-20 11:40:21,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 11:40:21,196 WARN L261 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 233 conjunts are in the unsatisfiable core [2022-02-20 11:40:21,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 11:40:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2720 backedges. 0 proven. 2720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 11:40:25,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 11:40:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2720 backedges. 0 proven. 2716 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-20 11:40:28,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365624305] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 11:40:28,804 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 11:40:28,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 64, 59] total 173 [2022-02-20 11:40:28,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310548222] [2022-02-20 11:40:28,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 11:40:28,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2022-02-20 11:40:28,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 11:40:28,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2022-02-20 11:40:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8712, Invalid=21390, Unknown=0, NotChecked=0, Total=30102 [2022-02-20 11:40:28,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:40:28,815 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 11:40:28,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 174 states, 174 states have (on average 2.074712643678161) internal successors, (361), 173 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 11:40:28,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 129 states. [2022-02-20 11:40:28,815 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 130 states. [2022-02-20 11:40:28,816 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 177 states. [2022-02-20 11:40:28,816 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:40:52,491 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 11159 transitions and produced 8743 states. [2022-02-20 11:40:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-20 11:40:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-20 11:40:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-02-20 11:40:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-02-20 11:40:52,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-20 11:40:52,692 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 [2022-02-20 11:40:52,693 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 11:40:52,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 11:40:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash -276276591, now seen corresponding path program 5 times [2022-02-20 11:40:52,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 11:40:52,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965064972] [2022-02-20 11:40:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 11:40:52,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 11:40:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 11:40:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3860 backedges. 3368 proven. 485 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-02-20 11:40:55,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 11:40:55,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965064972] [2022-02-20 11:40:55,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965064972] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 11:40:55,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063248531] [2022-02-20 11:40:55,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-20 11:40:55,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 11:40:55,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 11:40:55,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 11:40:55,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-20 11:40:55,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2022-02-20 11:40:55,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 11:40:55,102 WARN L261 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 273 conjunts are in the unsatisfiable core [2022-02-20 11:40:55,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 11:41:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3860 backedges. 0 proven. 3860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 11:41:00,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 11:41:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3860 backedges. 0 proven. 3859 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-20 11:41:04,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063248531] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 11:41:04,940 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 11:41:04,940 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 74, 70] total 205 [2022-02-20 11:41:04,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276852548] [2022-02-20 11:41:04,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 11:41:04,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2022-02-20 11:41:04,941 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 11:41:04,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2022-02-20 11:41:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12970, Invalid=29260, Unknown=0, NotChecked=0, Total=42230 [2022-02-20 11:41:04,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:41:04,950 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 11:41:04,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 206 states have (on average 2.0679611650485437) internal successors, (426), 205 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 11:41:04,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 132 states. [2022-02-20 11:41:04,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 130 states. [2022-02-20 11:41:04,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 177 states. [2022-02-20 11:41:04,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 188 states. [2022-02-20 11:41:04,951 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:42:06,788 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 44866 transitions and produced 34896 states. [2022-02-20 11:42:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-20 11:42:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-20 11:42:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2022-02-20 11:42:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-02-20 11:42:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 345 states. [2022-02-20 11:42:06,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-20 11:42:06,990 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 [2022-02-20 11:42:06,991 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-20 11:42:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 11:42:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash 513735831, now seen corresponding path program 6 times [2022-02-20 11:42:06,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 11:42:06,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934614772] [2022-02-20 11:42:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 11:42:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 11:42:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 11:42:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 6924 proven. 223 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-02-20 11:42:10,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 11:42:10,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934614772] [2022-02-20 11:42:10,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934614772] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-20 11:42:10,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307468111] [2022-02-20 11:42:10,472 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-20 11:42:10,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-20 11:42:10,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 11:42:10,474 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-20 11:42:10,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-20 11:42:10,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2022-02-20 11:42:10,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-20 11:42:10,640 WARN L261 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 397 conjunts are in the unsatisfiable core [2022-02-20 11:42:10,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 11:42:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 11:42:21,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-20 11:42:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7222 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-20 11:42:27,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307468111] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-20 11:42:27,513 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-20 11:42:27,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 105, 93] total 272 [2022-02-20 11:42:27,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496178506] [2022-02-20 11:42:27,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-20 11:42:27,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 273 states [2022-02-20 11:42:27,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 11:42:27,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 273 interpolants. [2022-02-20 11:42:27,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25316, Invalid=48940, Unknown=0, NotChecked=0, Total=74256 [2022-02-20 11:42:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 11:42:27,525 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-20 11:42:27,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 273 states, 273 states have (on average 2.1245421245421245) internal successors, (580), 272 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 11:42:27,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 132 states. [2022-02-20 11:42:27,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 130 states. [2022-02-20 11:42:27,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 179 states. [2022-02-20 11:42:27,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 190 states. [2022-02-20 11:42:27,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 345 states. [2022-02-20 11:42:27,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.