/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-MCRwithDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/TwoActiveWorkersSirius.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-16 04:52:40,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-16 04:52:40,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-16 04:52:40,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-16 04:52:40,338 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-MCRwithDepranks.epf [2022-02-16 04:52:40,356 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-16 04:52:40,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-16 04:52:40,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-16 04:52:40,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-16 04:52:40,357 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-16 04:52:40,357 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-16 04:52:40,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-16 04:52:40,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-16 04:52:40,358 INFO L138 SettingsManager]: * Use SBE=true [2022-02-16 04:52:40,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-16 04:52:40,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-16 04:52:40,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-16 04:52:40,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-16 04:52:40,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-16 04:52:40,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-16 04:52:40,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-16 04:52:40,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-16 04:52:40,360 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-16 04:52:40,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-16 04:52:40,360 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-16 04:52:40,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-16 04:52:40,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-16 04:52:40,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-16 04:52:40,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-16 04:52:40,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-16 04:52:40,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 04:52:40,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-16 04:52:40,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-16 04:52:40,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-16 04:52:40,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-16 04:52:40,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-16 04:52:40,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-16 04:52:40,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-16 04:52:40,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-16 04:52:40,363 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-16 04:52:40,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-16 04:52:40,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-16 04:52:40,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-16 04:52:40,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-16 04:52:40,610 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-16 04:52:40,611 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-16 04:52:40,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/TwoActiveWorkersSirius.bpl [2022-02-16 04:52:40,612 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/TwoActiveWorkersSirius.bpl' [2022-02-16 04:52:40,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-16 04:52:40,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-16 04:52:40,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-16 04:52:40,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-16 04:52:40,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-16 04:52:40,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,672 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-16 04:52:40,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-16 04:52:40,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-16 04:52:40,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-16 04:52:40,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-16 04:52:40,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-16 04:52:40,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-16 04:52:40,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-16 04:52:40,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-16 04:52:40,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/1) ... [2022-02-16 04:52:40,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-16 04:52:40,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:52:40,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-16 04:52:40,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-16 04:52:40,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-16 04:52:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-16 04:52:40,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-16 04:52:40,771 INFO L124 BoogieDeclarations]: Specification and implementation of procedure worker given in one single declaration [2022-02-16 04:52:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-02-16 04:52:40,772 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-02-16 04:52:40,772 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-16 04:52:40,805 INFO L234 CfgBuilder]: Building ICFG [2022-02-16 04:52:40,807 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-16 04:52:40,858 INFO L275 CfgBuilder]: Performing block encoding [2022-02-16 04:52:40,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-16 04:52:40,864 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-16 04:52:40,865 INFO L202 PluginConnector]: Adding new model TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:52:40 BoogieIcfgContainer [2022-02-16 04:52:40,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-16 04:52:40,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-16 04:52:40,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-16 04:52:40,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-16 04:52:40,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.02 04:52:40" (1/2) ... [2022-02-16 04:52:40,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4cda09 and model type TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 04:52:40, skipping insertion in model container [2022-02-16 04:52:40,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:52:40" (2/2) ... [2022-02-16 04:52:40,880 INFO L111 eAbstractionObserver]: Analyzing ICFG TwoActiveWorkersSirius.bpl [2022-02-16 04:52:40,884 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-16 04:52:40,884 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-16 04:52:40,885 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-16 04:52:40,885 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-16 04:52:40,916 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-02-16 04:52:40,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 04:52:40,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:52:40,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-16 04:52:40,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-16 04:52:40,984 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 04:52:40,991 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=false, 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 [2022-02-16 04:52:40,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-16 04:52:41,000 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 14 transitions, 36 flow [2022-02-16 04:52:41,048 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 40 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:41,060 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 9 transitions and produced 10 states. [2022-02-16 04:52:41,062 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:41,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1513027358, now seen corresponding path program 1 times [2022-02-16 04:52:41,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:41,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009406180] [2022-02-16 04:52:41,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:41,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:41,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:41,197 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:41,198 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009406180] [2022-02-16 04:52:41,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009406180] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:52:41,198 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:52:41,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 04:52:41,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009351977] [2022-02-16 04:52:41,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:52:41,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 04:52:41,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:41,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 04:52:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 04:52:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:41,250 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:41,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:41,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:41,288 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 14 transitions and produced 15 states. [2022-02-16 04:52:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:41,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-16 04:52:41,289 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:41,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1973828392, now seen corresponding path program 1 times [2022-02-16 04:52:41,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:41,291 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128976553] [2022-02-16 04:52:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:41,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:41,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:41,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128976553] [2022-02-16 04:52:41,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128976553] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:52:41,377 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:52:41,377 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-16 04:52:41,377 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511104201] [2022-02-16 04:52:41,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:52:41,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-16 04:52:41,378 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-16 04:52:41,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-16 04:52:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:41,379 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:41,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:41,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:41,379 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:41,486 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 28 transitions and produced 25 states. [2022-02-16 04:52:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-16 04:52:41,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-16 04:52:41,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:41,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1536681572, now seen corresponding path program 1 times [2022-02-16 04:52:41,490 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:41,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570869513] [2022-02-16 04:52:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:41,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 04:52:41,502 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-16 04:52:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-16 04:52:41,528 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-16 04:52:41,529 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-16 04:52:41,529 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2022-02-16 04:52:41,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-02-16 04:52:41,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr0ASSERT_VIOLATIONASSERT (0 of 3 remaining) [2022-02-16 04:52:41,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-16 04:52:41,538 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-16 04:52:41,540 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-16 04:52:41,540 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-02-16 04:52:41,546 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-16 04:52:41,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-16 04:52:41,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:52:41,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-16 04:52:41,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-02-16 04:52:41,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-16 04:52:41,558 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=false, 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 [2022-02-16 04:52:41,558 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-16 04:52:41,559 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 21 transitions, 60 flow [2022-02-16 04:52:41,623 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 268 states, 254 states have (on average 2.5393700787401574) internal successors, (645), 267 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:41,624 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 9 transitions and produced 10 states. [2022-02-16 04:52:41,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2134429049, now seen corresponding path program 1 times [2022-02-16 04:52:41,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:41,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456709570] [2022-02-16 04:52:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:41,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:41,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:41,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456709570] [2022-02-16 04:52:41,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456709570] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:52:41,646 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:52:41,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 04:52:41,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722328197] [2022-02-16 04:52:41,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:52:41,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 04:52:41,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 04:52:41,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 04:52:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:41,648 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:41,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:41,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:41,659 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 14 transitions and produced 15 states. [2022-02-16 04:52:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:41,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-16 04:52:41,660 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1807410413, now seen corresponding path program 1 times [2022-02-16 04:52:41,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:41,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055145470] [2022-02-16 04:52:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:41,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:41,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:41,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055145470] [2022-02-16 04:52:41,710 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055145470] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:52:41,710 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:52:41,710 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-16 04:52:41,710 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420336574] [2022-02-16 04:52:41,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:52:41,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-16 04:52:41,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-16 04:52:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-16 04:52:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:41,712 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:41,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:41,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:41,712 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:41,918 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 839 transitions and produced 783 states. [2022-02-16 04:52:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-16 04:52:41,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-16 04:52:41,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:41,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:41,921 INFO L85 PathProgramCache]: Analyzing trace with hash -548689217, now seen corresponding path program 1 times [2022-02-16 04:52:41,922 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:41,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419445418] [2022-02-16 04:52:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:41,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6130 backedges. 706 proven. 0 refuted. 0 times theorem prover too weak. 5424 trivial. 0 not checked. [2022-02-16 04:52:42,121 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:42,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419445418] [2022-02-16 04:52:42,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419445418] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:52:42,122 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:52:42,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 04:52:42,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156277175] [2022-02-16 04:52:42,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:52:42,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 04:52:42,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:42,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 04:52:42,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 04:52:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:42,124 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:42,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:42,125 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:42,125 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-16 04:52:42,125 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:42,181 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 540 transitions and produced 497 states. [2022-02-16 04:52:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-16 04:52:42,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:42,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-16 04:52:42,183 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:42,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:42,183 INFO L85 PathProgramCache]: Analyzing trace with hash 884024859, now seen corresponding path program 2 times [2022-02-16 04:52:42,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:42,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67230133] [2022-02-16 04:52:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:42,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 636 proven. 0 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2022-02-16 04:52:42,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:42,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67230133] [2022-02-16 04:52:42,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67230133] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:52:42,295 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:52:42,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-16 04:52:42,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15377696] [2022-02-16 04:52:42,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:52:42,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-16 04:52:42,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:42,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-16 04:52:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-16 04:52:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:42,297 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:42,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:42,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:42,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2022-02-16 04:52:42,297 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:42,298 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:42,375 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 542 transitions and produced 500 states. [2022-02-16 04:52:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-16 04:52:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:42,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-16 04:52:42,378 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:42,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash 803977197, now seen corresponding path program 1 times [2022-02-16 04:52:42,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:42,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931902027] [2022-02-16 04:52:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:42,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 364 proven. 233 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2022-02-16 04:52:42,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:42,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931902027] [2022-02-16 04:52:42,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931902027] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 04:52:42,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922043193] [2022-02-16 04:52:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:42,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 04:52:42,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:52:42,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 04:52:42,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-16 04:52:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:43,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 61 conjunts are in the unsatisfiable core [2022-02-16 04:52:43,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 04:52:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 405 proven. 140 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2022-02-16 04:52:43,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 04:52:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 405 proven. 140 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2022-02-16 04:52:44,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922043193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 04:52:44,190 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 04:52:44,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10 [2022-02-16 04:52:44,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889474330] [2022-02-16 04:52:44,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 04:52:44,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-16 04:52:44,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:44,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-16 04:52:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-02-16 04:52:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:44,193 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:44,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:44,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:44,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-02-16 04:52:44,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:44,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:44,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:44,659 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 764 transitions and produced 668 states. [2022-02-16 04:52:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-16 04:52:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-16 04:52:44,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-16 04:52:44,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 04:52:44,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:44,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:44,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1809442398, now seen corresponding path program 3 times [2022-02-16 04:52:44,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:44,881 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025257464] [2022-02-16 04:52:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:44,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3620 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 3266 trivial. 0 not checked. [2022-02-16 04:52:44,956 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:44,956 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025257464] [2022-02-16 04:52:44,956 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025257464] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-16 04:52:44,958 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-16 04:52:44,958 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-16 04:52:44,958 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757551448] [2022-02-16 04:52:44,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-16 04:52:44,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-16 04:52:44,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-16 04:52:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-16 04:52:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:44,961 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:44,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:44,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:44,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-02-16 04:52:44,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:44,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:44,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 28 states. [2022-02-16 04:52:44,962 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:45,056 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1002 transitions and produced 811 states. [2022-02-16 04:52:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-16 04:52:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-16 04:52:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-16 04:52:45,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-16 04:52:45,058 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT, workerErr0ASSERT_VIOLATIONASSERT] === [2022-02-16 04:52:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-16 04:52:45,059 INFO L85 PathProgramCache]: Analyzing trace with hash 830789409, now seen corresponding path program 1 times [2022-02-16 04:52:45,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-16 04:52:45,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139818023] [2022-02-16 04:52:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:45,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-16 04:52:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5259 backedges. 950 proven. 2590 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2022-02-16 04:52:46,109 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-16 04:52:46,109 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139818023] [2022-02-16 04:52:46,109 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139818023] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-16 04:52:46,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899994801] [2022-02-16 04:52:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-16 04:52:46,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 04:52:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-16 04:52:46,111 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-16 04:52:46,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-16 04:52:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-16 04:52:46,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 135 conjunts are in the unsatisfiable core [2022-02-16 04:52:46,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-16 04:52:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5259 backedges. 4489 proven. 768 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-16 04:52:51,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-16 04:52:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5259 backedges. 4254 proven. 1005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-16 04:52:57,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899994801] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-16 04:52:57,052 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-16 04:52:57,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 88, 89] total 215 [2022-02-16 04:52:57,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451379750] [2022-02-16 04:52:57,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-16 04:52:57,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 217 states [2022-02-16 04:52:57,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-16 04:52:57,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2022-02-16 04:52:57,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13214, Invalid=33658, Unknown=0, NotChecked=0, Total=46872 [2022-02-16 04:52:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-16 04:52:57,074 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-16 04:52:57,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 217 states, 216 states have (on average 3.888888888888889) internal successors, (840), 216 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-16 04:52:57,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:57,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-02-16 04:52:57,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:57,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-16 04:52:57,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 29 states. [2022-02-16 04:52:57,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2022-02-16 04:52:57,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Received shutdown request... [2022-02-16 05:03:08,742 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 [2022-02-16 05:03:08,742 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-16 05:03:08,742 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-16 05:03:08,742 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 [2022-02-16 05:03:08,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-16 05:03:08,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-16 05:03:08,970 WARN L594 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 3250 known predicates. [2022-02-16 05:03:08,970 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-02-16 05:03:08,970 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-02-16 05:03:08,971 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-02-16 05:03:08,971 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-02-16 05:03:08,972 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-02-16 05:03:08,974 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-02-16 05:03:08,975 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-16 05:03:08,977 INFO L202 PluginConnector]: Adding new model TwoActiveWorkersSirius.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 05:03:08 BasicIcfg [2022-02-16 05:03:08,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-16 05:03:08,978 INFO L158 Benchmark]: Toolchain (without parser) took 628343.89ms. Allocated memory was 172.0MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 131.2MB in the beginning and 6.4GB in the end (delta: -6.3GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2022-02-16 05:03:08,978 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 172.0MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-16 05:03:08,978 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.24ms. Allocated memory is still 172.0MB. Free memory was 131.2MB in the beginning and 129.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-16 05:03:08,979 INFO L158 Benchmark]: Boogie Preprocessor took 15.55ms. Allocated memory is still 172.0MB. Free memory was 129.6MB in the beginning and 128.7MB in the end (delta: 900.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-16 05:03:08,979 INFO L158 Benchmark]: RCFGBuilder took 174.93ms. Allocated memory is still 172.0MB. Free memory was 128.7MB in the beginning and 120.6MB in the end (delta: 8.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-16 05:03:08,979 INFO L158 Benchmark]: TraceAbstraction took 628107.71ms. Allocated memory was 172.0MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 120.2MB in the beginning and 6.4GB in the end (delta: -6.3GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2022-02-16 05:03:08,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 172.0MB. Free memory is still 132.2MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.24ms. Allocated memory is still 172.0MB. Free memory was 131.2MB in the beginning and 129.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.55ms. Allocated memory is still 172.0MB. Free memory was 129.6MB in the beginning and 128.7MB in the end (delta: 900.1kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 174.93ms. Allocated memory is still 172.0MB. Free memory was 128.7MB in the beginning and 120.6MB in the end (delta: 8.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 628107.71ms. Allocated memory was 172.0MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 120.2MB in the beginning and 6.4GB in the end (delta: -6.3GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 3250 known predicates. - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 3250 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 627.4s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 612.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=0, InterpolantAutomatonStates: 3106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 2071 NumberOfCodeBlocks, 2071 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2651 ConstructedInterpolants, 0 QuantifiedInterpolants, 9766 SizeOfPredicates, 1 NumberOfNonLiveVariables, 965 ConjunctsInSsa, 196 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 29387/34263 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown