/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/gemcutter/NewStatesSleepPersistentFixedOrder.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_THREAD_INSTANCE --traceabstraction.maximal.amount.of.steps.the.threads.are.allowed.to.take.successively 1 --traceabstraction.enable.heuristic.with.loops.as.step.type false --traceabstraction.considered.threads.and.their.maximal.amount.of.steps '"3,2 1,1 2,2"' --traceabstraction.defines.what.statements.are.considered.a.step.in.por ALL_READ_WRITE -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.orders-218013a [2023-05-03 16:48:17,480 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2023-05-03 16:48:17,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf [2023-05-03 16:48:17,592 INFO L113 SettingsManager]: Loading preferences was successful [2023-05-03 16:48:17,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-05-03 16:48:17,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-05-03 16:48:17,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-05-03 16:48:17,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-05-03 16:48:17,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-05-03 16:48:17,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-05-03 16:48:17,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-05-03 16:48:17,595 INFO L138 SettingsManager]: * Use SBE=true [2023-05-03 16:48:17,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-05-03 16:48:17,595 INFO L138 SettingsManager]: * sizeof long=4 [2023-05-03 16:48:17,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-05-03 16:48:17,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-05-03 16:48:17,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-05-03 16:48:17,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-05-03 16:48:17,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-05-03 16:48:17,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-05-03 16:48:17,596 INFO L138 SettingsManager]: * sizeof long double=12 [2023-05-03 16:48:17,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-05-03 16:48:17,597 INFO L138 SettingsManager]: * Use constant arrays=true [2023-05-03 16:48:17,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-05-03 16:48:17,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-05-03 16:48:17,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-05-03 16:48:17,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-05-03 16:48:17,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-05-03 16:48:17,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-03 16:48:17,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-05-03 16:48:17,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-05-03 16:48:17,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-05-03 16:48:17,599 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-05-03 16:48:17,599 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-05-03 16:48:17,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-05-03 16:48:17,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-05-03 16:48:17,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-05-03 16:48:17,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-05-03 16:48:17,599 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-05-03 16:48:17,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_THREAD_INSTANCE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Maximal amount of steps the threads are allowed to take successively -> 1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Enable heuristic with loops as step type -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Considered threads and their maximal amount of steps -> 3,2 1,1 2,2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Defines what statements are considered a step in POR -> ALL_READ_WRITE [2023-05-03 16:48:17,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-05-03 16:48:17,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-05-03 16:48:17,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-05-03 16:48:17,830 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-05-03 16:48:17,831 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2023-05-03 16:48:17,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl [2023-05-03 16:48:17,832 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl' [2023-05-03 16:48:17,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-05-03 16:48:17,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-05-03 16:48:17,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-05-03 16:48:17,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-05-03 16:48:17,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-05-03 16:48:17,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,875 INFO L138 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-05-03 16:48:17,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-05-03 16:48:17,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-05-03 16:48:17,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-05-03 16:48:17,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-05-03 16:48:17,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-05-03 16:48:17,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-05-03 16:48:17,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-05-03 16:48:17,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-05-03 16:48:17,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/1) ... [2023-05-03 16:48:17,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-03 16:48:17,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-03 16:48:17,921 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) [2023-05-03 16:48:17,928 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 [2023-05-03 16:48:17,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-05-03 16:48:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-05-03 16:48:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-05-03 16:48:17,950 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-05-03 16:48:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-05-03 16:48:17,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-05-03 16:48:17,950 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-05-03 16:48:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-05-03 16:48:17,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-05-03 16:48:17,951 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2023-05-03 16:48:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-05-03 16:48:17,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-05-03 16:48:17,952 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-05-03 16:48:18,000 INFO L235 CfgBuilder]: Building ICFG [2023-05-03 16:48:18,001 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-05-03 16:48:18,106 INFO L276 CfgBuilder]: Performing block encoding [2023-05-03 16:48:18,151 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-05-03 16:48:18,151 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-05-03 16:48:18,153 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 04:48:18 BoogieIcfgContainer [2023-05-03 16:48:18,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-05-03 16:48:18,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-05-03 16:48:18,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-05-03 16:48:18,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-05-03 16:48:18,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.05 04:48:17" (1/2) ... [2023-05-03 16:48:18,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3895df75 and model type ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 04:48:18, skipping insertion in model container [2023-05-03 16:48:18,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 04:48:18" (2/2) ... [2023-05-03 16:48:18,160 INFO L112 eAbstractionObserver]: Analyzing ICFG ring-nondet.wvr.bpl [2023-05-03 16:48:18,167 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-05-03 16:48:18,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-05-03 16:48:18,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-05-03 16:48:18,174 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-05-03 16:48:18,244 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-05-03 16:48:18,299 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-03 16:48:18,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-03 16:48:18,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-03 16:48:18,302 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) [2023-05-03 16:48:18,305 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 [2023-05-03 16:48:18,335 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-03 16:48:18,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-05-03 16:48:18,357 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4fd7bc33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-03 16:48:18,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-05-03 16:48:18,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-03 16:48:18,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-03 16:48:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2050696980, now seen corresponding path program 1 times [2023-05-03 16:48:18,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-03 16:48:18,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499719520] [2023-05-03 16:48:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:48:18,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-03 16:48:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-03 16:48:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-05-03 16:48:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-03 16:48:18,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499719520] [2023-05-03 16:48:18,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499719520] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-03 16:48:18,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-03 16:48:18,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-05-03 16:48:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088409779] [2023-05-03 16:48:18,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-03 16:48:18,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-03 16:48:18,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-03 16:48:18,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-03 16:48:18,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-05-03 16:48:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:18,758 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-03 16:48:18,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2023-05-03 16:48:18,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:18,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-05-03 16:48:18,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-03 16:48:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-03 16:48:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1206505266, now seen corresponding path program 1 times [2023-05-03 16:48:18,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-03 16:48:18,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968309439] [2023-05-03 16:48:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:48:18,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-03 16:48:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-03 16:48:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-05-03 16:48:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-03 16:48:18,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968309439] [2023-05-03 16:48:18,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968309439] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-03 16:48:18,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-03 16:48:18,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-05-03 16:48:18,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953711924] [2023-05-03 16:48:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-03 16:48:19,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-03 16:48:19,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-03 16:48:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-03 16:48:19,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-05-03 16:48:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:19,002 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-03 16:48:19,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2023-05-03 16:48:19,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:19,002 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-05-03 16:48:19,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-03 16:48:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-03 16:48:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash -960700650, now seen corresponding path program 2 times [2023-05-03 16:48:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-03 16:48:19,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889400231] [2023-05-03 16:48:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:48:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-03 16:48:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-03 16:48:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-05-03 16:48:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-03 16:48:19,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889400231] [2023-05-03 16:48:19,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889400231] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-03 16:48:19,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522412649] [2023-05-03 16:48:19,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-05-03 16:48:19,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:48:19,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-03 16:48:19,317 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) [2023-05-03 16:48:19,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-05-03 16:48:19,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-05-03 16:48:19,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-05-03 16:48:19,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2023-05-03 16:48:19,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-03 16:48:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-05-03 16:48:19,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-05-03 16:48:19,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522412649] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-03 16:48:19,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-05-03 16:48:19,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-05-03 16:48:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041582192] [2023-05-03 16:48:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-03 16:48:19,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-03 16:48:19,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-03 16:48:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-03 16:48:19,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-05-03 16:48:19,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:19,472 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-03 16:48:19,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) [2023-05-03 16:48:19,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:19,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:19,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:19,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:19,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:19,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-05-03 16:48:19,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-05-03 16:48:19,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-03 16:48:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-03 16:48:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1042417468, now seen corresponding path program 1 times [2023-05-03 16:48:19,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-03 16:48:19,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467205290] [2023-05-03 16:48:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:48:19,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-03 16:48:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-03 16:48:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-05-03 16:48:19,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-03 16:48:19,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467205290] [2023-05-03 16:48:19,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467205290] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-03 16:48:19,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298931510] [2023-05-03 16:48:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:48:19,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:48:19,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-03 16:48:20,010 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) [2023-05-03 16:48:20,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-05-03 16:48:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-03 16:48:20,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2023-05-03 16:48:20,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-03 16:48:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-05-03 16:48:20,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-03 16:48:20,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2023-05-03 16:48:20,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-05-03 16:48:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-05-03 16:48:20,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298931510] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-03 16:48:20,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-03 16:48:20,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-05-03 16:48:20,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051169475] [2023-05-03 16:48:20,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-03 16:48:20,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-05-03 16:48:20,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-03 16:48:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-05-03 16:48:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-05-03 16:48:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:20,413 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-03 16:48:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2023-05-03 16:48:20,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:20,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:20,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:20,414 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-03 16:48:20,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-05-03 16:48:20,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:48:20,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-03 16:48:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-03 16:48:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1832789060, now seen corresponding path program 2 times [2023-05-03 16:48:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-03 16:48:20,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875402975] [2023-05-03 16:48:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:48:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-03 16:48:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-03 16:48:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-05-03 16:48:21,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-03 16:48:21,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875402975] [2023-05-03 16:48:21,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875402975] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-03 16:48:21,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161611109] [2023-05-03 16:48:21,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-05-03 16:48:21,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:48:21,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-03 16:48:21,348 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) [2023-05-03 16:48:21,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-05-03 16:48:21,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-05-03 16:48:21,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-05-03 16:48:21,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 17 conjunts are in the unsatisfiable core [2023-05-03 16:48:21,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-03 16:48:22,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2023-05-03 16:48:22,338 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-05-03 16:48:22,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 53 [2023-05-03 16:48:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-05-03 16:48:22,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-03 16:48:23,467 INFO L356 Elim1Store]: treesize reduction 25, result has 13.8 percent of original size [2023-05-03 16:48:23,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 129 [2023-05-03 16:48:23,484 INFO L356 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2023-05-03 16:48:23,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 123 [2023-05-03 16:48:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-05-03 16:48:23,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161611109] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-03 16:48:23,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-03 16:48:23,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2023-05-03 16:48:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186407262] [2023-05-03 16:48:23,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-03 16:48:23,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-05-03 16:48:23,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-03 16:48:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-05-03 16:48:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2023-05-03 16:48:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:23,612 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-03 16:48:23,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 27 states have internal predecessors, (124), 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) [2023-05-03 16:48:23,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:23,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:23,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:23,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-03 16:48:23,613 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-03 16:48:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-05-03 16:48:24,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-05-03 16:48:24,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:48:24,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-03 16:48:24,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-03 16:48:24,833 INFO L85 PathProgramCache]: Analyzing trace with hash 563264740, now seen corresponding path program 3 times [2023-05-03 16:48:24,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-03 16:48:24,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066876752] [2023-05-03 16:48:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:48:24,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-03 16:48:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-03 16:48:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 16 proven. 83 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-05-03 16:48:25,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-03 16:48:25,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066876752] [2023-05-03 16:48:25,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066876752] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-03 16:48:25,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157475686] [2023-05-03 16:48:25,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-05-03 16:48:25,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:48:25,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-03 16:48:25,326 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) [2023-05-03 16:48:25,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-05-03 16:48:25,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-05-03 16:48:25,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-05-03 16:48:25,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 27 conjunts are in the unsatisfiable core [2023-05-03 16:48:25,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-03 16:48:25,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2023-05-03 16:48:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 47 proven. 55 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-05-03 16:48:26,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-03 16:48:26,682 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-05-03 16:48:26,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-05-03 16:48:27,049 INFO L356 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2023-05-03 16:48:27,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 97 [2023-05-03 16:48:27,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2023-05-03 16:48:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 55 proven. 47 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-05-03 16:48:27,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157475686] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-03 16:48:27,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-03 16:48:27,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 14] total 38 [2023-05-03 16:48:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871293326] [2023-05-03 16:48:27,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-03 16:48:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-05-03 16:48:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-03 16:48:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-05-03 16:48:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1268, Unknown=0, NotChecked=0, Total=1482 [2023-05-03 16:48:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:27,141 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-03 16:48:27,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.948717948717949) internal successors, (154), 38 states have internal predecessors, (154), 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) [2023-05-03 16:48:27,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:27,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:27,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:27,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-03 16:48:27,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-05-03 16:48:27,142 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-03 16:48:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-05-03 16:48:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-05-03 16:48:33,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-05-03 16:48:34,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:48:34,005 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-03 16:48:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-03 16:48:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1869539602, now seen corresponding path program 4 times [2023-05-03 16:48:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-03 16:48:34,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834975481] [2023-05-03 16:48:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:48:34,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-03 16:48:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-03 16:48:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 23 proven. 163 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-05-03 16:48:34,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-03 16:48:34,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834975481] [2023-05-03 16:48:34,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834975481] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-03 16:48:34,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464119438] [2023-05-03 16:48:34,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-05-03 16:48:34,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:48:34,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-03 16:48:34,778 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) [2023-05-03 16:48:34,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-05-03 16:48:34,843 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-05-03 16:48:34,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-05-03 16:48:34,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 37 conjunts are in the unsatisfiable core [2023-05-03 16:48:34,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-03 16:48:35,674 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-05-03 16:48:35,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 69 [2023-05-03 16:48:35,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-05-03 16:48:35,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-05-03 16:48:35,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-05-03 16:48:35,752 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-05-03 16:48:35,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 34 [2023-05-03 16:48:35,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-05-03 16:48:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 109 proven. 94 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-05-03 16:48:35,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-03 16:48:35,869 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-05-03 16:48:35,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-05-03 16:48:36,926 INFO L356 Elim1Store]: treesize reduction 20, result has 71.0 percent of original size [2023-05-03 16:48:36,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 123 treesize of output 155 [2023-05-03 16:48:36,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-05-03 16:48:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 101 proven. 102 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-05-03 16:48:37,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464119438] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-03 16:48:37,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-03 16:48:37,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 39 [2023-05-03 16:48:37,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535922368] [2023-05-03 16:48:37,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-03 16:48:37,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-05-03 16:48:37,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-03 16:48:37,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-05-03 16:48:37,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2023-05-03 16:48:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:37,125 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-03 16:48:37,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.575) internal successors, (183), 39 states have internal predecessors, (183), 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) [2023-05-03 16:48:37,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:37,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:37,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:37,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-03 16:48:37,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-05-03 16:48:37,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 89 states. [2023-05-03 16:48:37,126 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:48:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:48:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-03 16:48:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-05-03 16:48:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-05-03 16:48:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-05-03 16:48:42,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-05-03 16:48:42,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:48:42,953 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-03 16:48:42,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-03 16:48:42,953 INFO L85 PathProgramCache]: Analyzing trace with hash -727167632, now seen corresponding path program 5 times [2023-05-03 16:48:42,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-03 16:48:42,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872866882] [2023-05-03 16:48:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:48:42,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-03 16:48:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-03 16:50:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 27 proven. 730 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-05-03 16:50:48,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-03 16:50:48,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872866882] [2023-05-03 16:50:48,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872866882] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-03 16:50:48,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017426589] [2023-05-03 16:50:48,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-05-03 16:50:48,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:50:48,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-03 16:50:48,617 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) [2023-05-03 16:50:48,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-05-03 16:50:48,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-05-03 16:50:48,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-05-03 16:50:48,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 133 conjunts are in the unsatisfiable core [2023-05-03 16:50:48,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-03 16:51:05,343 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-05-03 16:51:05,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 451 treesize of output 395 [2023-05-03 16:51:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 120 proven. 649 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-05-03 16:51:09,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-03 16:51:46,814 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-05-03 16:51:46,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 133 [2023-05-03 16:51:54,147 INFO L356 Elim1Store]: treesize reduction 408, result has 24.6 percent of original size [2023-05-03 16:51:54,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 1053 treesize of output 1037 [2023-05-03 16:51:54,621 INFO L356 Elim1Store]: treesize reduction 128, result has 65.7 percent of original size [2023-05-03 16:51:54,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 915 treesize of output 847 [2023-05-03 16:53:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 5 proven. 766 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-05-03 16:53:04,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017426589] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-03 16:53:04,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-03 16:53:04,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 58, 61] total 161 [2023-05-03 16:53:04,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388528439] [2023-05-03 16:53:04,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-03 16:53:04,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2023-05-03 16:53:04,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-03 16:53:04,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2023-05-03 16:53:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5303, Invalid=20779, Unknown=0, NotChecked=0, Total=26082 [2023-05-03 16:53:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:53:04,613 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-03 16:53:04,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 2.685185185185185) internal successors, (435), 161 states have internal predecessors, (435), 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) [2023-05-03 16:53:04,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:53:04,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:53:04,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:53:04,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-05-03 16:53:04,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-05-03 16:53:04,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 92 states. [2023-05-03 16:53:04,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 92 states. [2023-05-03 16:53:04,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-03 16:54:09,032 WARN L233 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 806 DAG size of output: 666 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-05-03 16:54:43,555 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 778 DAG size of output: 720 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-05-03 16:54:54,137 WARN L233 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 813 DAG size of output: 667 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-05-03 16:56:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:56:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:56:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-03 16:56:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-05-03 16:56:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-05-03 16:56:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-05-03 16:56:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-05-03 16:56:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-05-03 16:56:07,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-05-03 16:56:07,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-03 16:56:07,999 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-05-03 16:56:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-03 16:56:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1286806042, now seen corresponding path program 6 times [2023-05-03 16:56:07,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-03 16:56:07,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661761424] [2023-05-03 16:56:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-03 16:56:08,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-03 16:56:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-05-03 17:01:59,664 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-05-03 17:01:59,664 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-05-03 17:02:00,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2023-05-03 17:02:00,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown