/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-04 11:07:49,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 11:07:49,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 11:07:49,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-04 11:07:49,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-04 11:07:49,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-04 11:07:49,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-04 11:07:49,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-04 11:07:49,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-04 11:07:49,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-04 11:07:49,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-04 11:07:49,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-04 11:07:49,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-04 11:07:49,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-04 11:07:49,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-04 11:07:49,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-04 11:07:49,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-04 11:07:49,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-04 11:07:49,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-04 11:07:49,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-04 11:07:49,580 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 [2022-03-04 11:07:49,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 11:07:49,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 11:07:49,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 11:07:49,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 11:07:49,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 11:07:49,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 11:07:49,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 11:07:49,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 11:07:49,617 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 11:07:49,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 11:07:49,619 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 11:07:49,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 11:07:49,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 11:07:49,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 11:07:49,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 11:07:49,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 11:07:49,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 11:07:49,619 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 11:07:49,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 11:07:49,620 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 11:07:49,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 11:07:49,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 11:07:49,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 11:07:49,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 11:07:49,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 11:07:49,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 11:07:49,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 11:07:49,621 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 11:07:49,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 11:07:49,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 11:07:49,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 11:07:49,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 11:07:49,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 11:07:49,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 11:07:49,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 11:07:49,622 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-04 11:07:49,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 11:07:49,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 11:07:49,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 11:07:49,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 11:07:49,903 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-04 11:07:49,904 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-04 11:07:49,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl [2022-03-04 11:07:49,905 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled-atomic.wvr.bpl' [2022-03-04 11:07:49,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 11:07:49,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-04 11:07:49,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 11:07:49,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 11:07:49,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 11:07:49,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,949 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-04 11:07:49,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 11:07:49,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 11:07:49,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 11:07:49,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 11:07:49,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 11:07:49,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 11:07:49,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 11:07:49,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 11:07:49,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/1) ... [2022-03-04 11:07:49,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 11:07:49,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:07:49,995 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) [2022-03-04 11:07:50,000 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 [2022-03-04 11:07:50,025 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-04 11:07:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-04 11:07:50,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-04 11:07:50,026 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-04 11:07:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-04 11:07:50,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-04 11:07:50,026 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-04 11:07:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 11:07:50,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 11:07:50,027 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-04 11:07:50,064 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 11:07:50,065 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 11:07:50,168 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 11:07:50,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 11:07:50,217 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-04 11:07:50,223 INFO L202 PluginConnector]: Adding new model misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 11:07:50 BoogieIcfgContainer [2022-03-04 11:07:50,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 11:07:50,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 11:07:50,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 11:07:50,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 11:07:50,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 11:07:49" (1/2) ... [2022-03-04 11:07:50,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e10ea97 and model type misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:07:50, skipping insertion in model container [2022-03-04 11:07:50,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled-atomic.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 11:07:50" (2/2) ... [2022-03-04 11:07:50,232 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled-atomic.wvr.bpl [2022-03-04 11:07:50,239 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 11:07:50,240 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 11:07:50,240 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-04 11:07:50,240 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 11:07:50,286 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-04 11:07:50,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 11:07:50,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:07:50,342 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) [2022-03-04 11:07:50,345 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 [2022-03-04 11:07:50,379 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 11:07:50,385 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 [2022-03-04 11:07:50,385 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-04 11:07:50,526 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 119 transitions and produced 106 states. [2022-03-04 11:07:50,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 11:07:50,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 11:07:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2065443576, now seen corresponding path program 1 times [2022-03-04 11:07:50,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 11:07:50,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247552322] [2022-03-04 11:07:50,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:07:50,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 11:07:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:07:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 121 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:07:50,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 11:07:50,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247552322] [2022-03-04 11:07:50,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247552322] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 11:07:50,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92267974] [2022-03-04 11:07:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:07:50,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 11:07:50,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:07:50,947 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) [2022-03-04 11:07:50,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-04 11:07:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:07:51,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-04 11:07:51,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 11:07:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 121 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:07:51,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 11:07:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 121 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:07:51,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92267974] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 11:07:51,909 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 11:07:51,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2022-03-04 11:07:51,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598475317] [2022-03-04 11:07:51,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 11:07:51,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-04 11:07:51,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 11:07:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-04 11:07:51,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=595, Unknown=0, NotChecked=0, Total=870 [2022-03-04 11:07:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:07:51,938 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 11:07:51,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 29 states have internal predecessors, (77), 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) [2022-03-04 11:07:51,939 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:07:52,661 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 178 transitions and produced 156 states. [2022-03-04 11:07:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:07:52,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-04 11:07:52,871 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 [2022-03-04 11:07:52,872 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 11:07:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 11:07:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1191287250, now seen corresponding path program 2 times [2022-03-04 11:07:52,873 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 11:07:52,873 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535414161] [2022-03-04 11:07:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:07:52,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 11:07:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:07:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 324 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 11:07:53,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 11:07:53,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535414161] [2022-03-04 11:07:53,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535414161] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 11:07:53,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454902341] [2022-03-04 11:07:53,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 11:07:53,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 11:07:53,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:07:53,361 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) [2022-03-04 11:07:53,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-04 11:07:53,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 11:07:53,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 11:07:53,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-04 11:07:53,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 11:07:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 268 proven. 100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-04 11:07:53,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 11:07:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 268 proven. 100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-04 11:07:54,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454902341] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 11:07:54,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 11:07:54,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23, 23] total 41 [2022-03-04 11:07:54,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564566136] [2022-03-04 11:07:54,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 11:07:54,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-04 11:07:54,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 11:07:54,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-04 11:07:54,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=1257, Unknown=0, NotChecked=0, Total=1722 [2022-03-04 11:07:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:07:54,050 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 11:07:54,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.238095238095238) internal successors, (94), 41 states have internal predecessors, (94), 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) [2022-03-04 11:07:54,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:07:54,051 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:07:54,441 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 254 transitions and produced 219 states. [2022-03-04 11:07:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:07:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:07:54,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-04 11:07:54,666 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 [2022-03-04 11:07:54,666 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 11:07:54,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 11:07:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash 710816428, now seen corresponding path program 3 times [2022-03-04 11:07:54,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 11:07:54,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643165806] [2022-03-04 11:07:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:07:54,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 11:07:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:07:55,380 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 400 proven. 437 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:07:55,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 11:07:55,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643165806] [2022-03-04 11:07:55,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643165806] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 11:07:55,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226492879] [2022-03-04 11:07:55,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-04 11:07:55,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 11:07:55,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:07:55,388 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) [2022-03-04 11:07:55,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-04 11:07:55,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-03-04 11:07:55,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 11:07:55,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-04 11:07:55,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 11:07:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 400 proven. 437 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:07:55,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 11:07:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 400 proven. 437 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:07:56,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226492879] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 11:07:56,579 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 11:07:56,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 58 [2022-03-04 11:07:56,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874467619] [2022-03-04 11:07:56,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 11:07:56,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-04 11:07:56,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 11:07:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-04 11:07:56,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=989, Invalid=2433, Unknown=0, NotChecked=0, Total=3422 [2022-03-04 11:07:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:07:56,583 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 11:07:56,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 58 states have internal predecessors, (134), 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) [2022-03-04 11:07:56,583 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:07:56,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:07:56,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:07:57,757 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 256 transitions and produced 214 states. [2022-03-04 11:07:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:07:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:07:57,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:07:57,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-04 11:07:57,979 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 [2022-03-04 11:07:57,980 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 11:07:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 11:07:57,981 INFO L85 PathProgramCache]: Analyzing trace with hash -645242682, now seen corresponding path program 4 times [2022-03-04 11:07:57,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 11:07:57,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610984688] [2022-03-04 11:07:57,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:07:57,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 11:07:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:07:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 441 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 11:07:58,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 11:07:58,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610984688] [2022-03-04 11:07:58,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610984688] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 11:07:58,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878190809] [2022-03-04 11:07:58,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-04 11:07:58,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 11:07:58,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:07:58,700 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) [2022-03-04 11:07:58,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-04 11:07:58,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-04 11:07:58,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 11:07:58,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-04 11:07:58,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 11:07:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 439 proven. 361 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-04 11:07:58,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 11:07:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 439 proven. 361 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-04 11:07:59,760 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878190809] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 11:07:59,761 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 11:07:59,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 62 [2022-03-04 11:07:59,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710279799] [2022-03-04 11:07:59,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 11:07:59,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-04 11:07:59,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 11:07:59,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-04 11:07:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1113, Invalid=2793, Unknown=0, NotChecked=0, Total=3906 [2022-03-04 11:07:59,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:07:59,764 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 11:07:59,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.1587301587301586) internal successors, (136), 62 states have internal predecessors, (136), 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) [2022-03-04 11:07:59,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:07:59,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:07:59,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:07:59,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:00,559 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 332 transitions and produced 277 states. [2022-03-04 11:08:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:00,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-04 11:08:00,760 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 [2022-03-04 11:08:00,760 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 11:08:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 11:08:00,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1015743556, now seen corresponding path program 5 times [2022-03-04 11:08:00,761 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 11:08:00,761 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638195854] [2022-03-04 11:08:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:08:00,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 11:08:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:08:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 841 proven. 584 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:08:01,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 11:08:01,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638195854] [2022-03-04 11:08:01,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638195854] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 11:08:01,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951480257] [2022-03-04 11:08:01,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-04 11:08:01,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 11:08:01,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:08:01,660 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) [2022-03-04 11:08:01,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-04 11:08:01,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-03-04 11:08:01,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 11:08:01,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-04 11:08:01,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 11:08:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 527 proven. 882 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-04 11:08:02,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 11:08:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 527 proven. 882 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-03-04 11:08:03,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951480257] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 11:08:03,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 11:08:03,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 47, 47] total 80 [2022-03-04 11:08:03,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688034351] [2022-03-04 11:08:03,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 11:08:03,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-04 11:08:03,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 11:08:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-04 11:08:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1812, Invalid=4668, Unknown=0, NotChecked=0, Total=6480 [2022-03-04 11:08:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:03,400 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 11:08:03,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.2839506172839505) internal successors, (185), 80 states have internal predecessors, (185), 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) [2022-03-04 11:08:03,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:03,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:03,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:03,400 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:03,401 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:05,167 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 364 transitions and produced 296 states. [2022-03-04 11:08:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:05,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-04 11:08:05,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-04 11:08:05,387 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 [2022-03-04 11:08:05,387 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 11:08:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 11:08:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1080639510, now seen corresponding path program 6 times [2022-03-04 11:08:05,388 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 11:08:05,388 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908736987] [2022-03-04 11:08:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:08:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 11:08:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:08:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 900 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 11:08:06,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 11:08:06,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908736987] [2022-03-04 11:08:06,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908736987] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 11:08:06,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305471791] [2022-03-04 11:08:06,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-04 11:08:06,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 11:08:06,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:08:06,510 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) [2022-03-04 11:08:06,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-04 11:08:06,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-03-04 11:08:06,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 11:08:06,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-04 11:08:06,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 11:08:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 900 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 11:08:06,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 11:08:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 900 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 11:08:08,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305471791] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 11:08:08,181 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 11:08:08,181 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 90 [2022-03-04 11:08:08,181 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687634935] [2022-03-04 11:08:08,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 11:08:08,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-03-04 11:08:08,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 11:08:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-03-04 11:08:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2297, Invalid=5893, Unknown=0, NotChecked=0, Total=8190 [2022-03-04 11:08:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:08,184 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 11:08:08,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.10989010989011) internal successors, (192), 90 states have internal predecessors, (192), 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) [2022-03-04 11:08:08,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:08,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:08,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:08,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:08,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 59 states. [2022-03-04 11:08:08,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:09,564 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 447 transitions and produced 364 states. [2022-03-04 11:08:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-04 11:08:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-04 11:08:09,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-04 11:08:09,767 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 [2022-03-04 11:08:09,768 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 11:08:09,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 11:08:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1286626666, now seen corresponding path program 7 times [2022-03-04 11:08:09,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 11:08:09,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103945379] [2022-03-04 11:08:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:08:09,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 11:08:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:08:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 1521 proven. 1099 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:08:11,216 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 11:08:11,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103945379] [2022-03-04 11:08:11,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103945379] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 11:08:11,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444225786] [2022-03-04 11:08:11,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-04 11:08:11,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 11:08:11,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:08:11,220 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) [2022-03-04 11:08:11,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-04 11:08:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:08:11,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 75 conjunts are in the unsatisfiable core [2022-03-04 11:08:11,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 11:08:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 1521 proven. 1099 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:08:11,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 11:08:13,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 1521 proven. 1099 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-04 11:08:13,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444225786] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 11:08:13,531 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 11:08:13,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 115 [2022-03-04 11:08:13,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463192142] [2022-03-04 11:08:13,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 11:08:13,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-03-04 11:08:13,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 11:08:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-03-04 11:08:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3782, Invalid=9558, Unknown=0, NotChecked=0, Total=13340 [2022-03-04 11:08:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:13,536 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 11:08:13,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.1810344827586206) internal successors, (253), 115 states have internal predecessors, (253), 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) [2022-03-04 11:08:13,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:13,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:13,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:13,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:13,536 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 59 states. [2022-03-04 11:08:13,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 92 states. [2022-03-04 11:08:13,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:16,801 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 519 transitions and produced 422 states. [2022-03-04 11:08:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-04 11:08:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-04 11:08:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-04 11:08:16,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-04 11:08:17,002 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 [2022-03-04 11:08:17,003 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 11:08:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 11:08:17,004 INFO L85 PathProgramCache]: Analyzing trace with hash -521826144, now seen corresponding path program 8 times [2022-03-04 11:08:17,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 11:08:17,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634945644] [2022-03-04 11:08:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:08:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 11:08:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:08:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3653 backedges. 2209 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-04 11:08:19,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 11:08:19,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634945644] [2022-03-04 11:08:19,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634945644] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 11:08:19,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342273175] [2022-03-04 11:08:19,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 11:08:19,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 11:08:19,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 11:08:19,263 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) [2022-03-04 11:08:19,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-04 11:08:19,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 11:08:19,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 11:08:19,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-04 11:08:19,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 11:08:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3653 backedges. 2137 proven. 1444 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-03-04 11:08:19,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 11:08:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3653 backedges. 2137 proven. 1444 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-03-04 11:08:21,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342273175] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 11:08:21,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 11:08:21,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 79, 79] total 126 [2022-03-04 11:08:21,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771499664] [2022-03-04 11:08:21,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 11:08:21,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-03-04 11:08:21,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 11:08:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-03-04 11:08:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4335, Invalid=11667, Unknown=0, NotChecked=0, Total=16002 [2022-03-04 11:08:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:21,707 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 11:08:21,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 2.078740157480315) internal successors, (264), 126 states have internal predecessors, (264), 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) [2022-03-04 11:08:21,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:21,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:21,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:21,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:21,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 59 states. [2022-03-04 11:08:21,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 92 states. [2022-03-04 11:08:21,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 93 states. [2022-03-04 11:08:21,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:23,618 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 595 transitions and produced 485 states. [2022-03-04 11:08:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-04 11:08:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-03-04 11:08:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-04 11:08:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-04 11:08:23,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-04 11:08:23,825 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 [2022-03-04 11:08:23,825 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-04 11:08:23,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 11:08:23,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1209404830, now seen corresponding path program 9 times [2022-03-04 11:08:23,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 11:08:23,826 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228835598] [2022-03-04 11:08:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 11:08:23,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 11:08:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 11:08:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4802 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2022-03-04 11:08:24,310 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 11:08:24,310 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228835598] [2022-03-04 11:08:24,310 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228835598] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 11:08:24,310 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 11:08:24,310 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-04 11:08:24,310 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814083016] [2022-03-04 11:08:24,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 11:08:24,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-04 11:08:24,311 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 11:08:24,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-04 11:08:24,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-04 11:08:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 11:08:24,311 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 11:08:24,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-03-04 11:08:24,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2022-03-04 11:08:24,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2022-03-04 11:08:24,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 41 states. [2022-03-04 11:08:24,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 62 states. [2022-03-04 11:08:24,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 59 states. [2022-03-04 11:08:24,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 92 states. [2022-03-04 11:08:24,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 93 states. [2022-03-04 11:08:24,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 119 states. [2022-03-04 11:08:24,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.