/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 09:00:05,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 09:00:05,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 09:00:05,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 09:00:05,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks.epf [2022-02-10 09:00:05,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 09:00:05,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 09:00:05,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 09:00:05,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 09:00:05,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 09:00:05,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 09:00:05,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 09:00:05,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 09:00:05,746 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 09:00:05,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 09:00:05,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 09:00:05,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 09:00:05,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 09:00:05,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 09:00:05,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 09:00:05,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 09:00:05,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 09:00:05,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 09:00:05,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 09:00:05,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 09:00:05,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 09:00:05,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 09:00:05,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 09:00:05,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 09:00:05,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 09:00:05,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 09:00:05,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 09:00:05,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 09:00:05,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 09:00:05,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 09:00:05,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 09:00:05,749 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 09:00:05,749 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-10 09:00:05,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 09:00:05,749 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-02-10 09:00:05,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 09:00:05,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 09:00:05,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 09:00:05,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 09:00:05,958 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 09:00:05,960 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 09:00:05,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl [2022-02-10 09:00:05,961 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/MirabelleConcurrentIncrement.bpl' [2022-02-10 09:00:05,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 09:00:05,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 09:00:05,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 09:00:05,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 09:00:05,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 09:00:05,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:05,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:05,999 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 09:00:06,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 09:00:06,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 09:00:06,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 09:00:06,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 09:00:06,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:06,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:06,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:06,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:06,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:06,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:06,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:06,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 09:00:06,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 09:00:06,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 09:00:06,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 09:00:06,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/1) ... [2022-02-10 09:00:06,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 09:00:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 09:00:06,060 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) [2022-02-10 09:00:06,074 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 [2022-02-10 09:00:06,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 09:00:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 09:00:06,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 09:00:06,101 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T1 given in one single declaration [2022-02-10 09:00:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure T1 [2022-02-10 09:00:06,102 INFO L138 BoogieDeclarations]: Found implementation of procedure T1 [2022-02-10 09:00:06,102 INFO L124 BoogieDeclarations]: Specification and implementation of procedure T2 given in one single declaration [2022-02-10 09:00:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure T2 [2022-02-10 09:00:06,102 INFO L138 BoogieDeclarations]: Found implementation of procedure T2 [2022-02-10 09:00:06,102 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 09:00:06,140 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 09:00:06,142 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 09:00:06,189 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 09:00:06,194 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 09:00:06,194 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 09:00:06,195 INFO L202 PluginConnector]: Adding new model MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 09:00:06 BoogieIcfgContainer [2022-02-10 09:00:06,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 09:00:06,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 09:00:06,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 09:00:06,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 09:00:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 09:00:05" (1/2) ... [2022-02-10 09:00:06,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@650dbb3f and model type MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 09:00:06, skipping insertion in model container [2022-02-10 09:00:06,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "MirabelleConcurrentIncrement.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 09:00:06" (2/2) ... [2022-02-10 09:00:06,203 INFO L111 eAbstractionObserver]: Analyzing ICFG MirabelleConcurrentIncrement.bpl [2022-02-10 09:00:06,216 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 09:00:06,217 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 09:00:06,217 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 09:00:06,217 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 09:00:06,246 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-10 09:00:06,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-10 09:00:06,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 09:00:06,294 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) [2022-02-10 09:00:06,331 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 [2022-02-10 09:00:06,334 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 09:00:06,339 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 [2022-02-10 09:00:06,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 09:00:06,346 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 20 transitions, 62 flow [2022-02-10 09:00:06,381 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 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) [2022-02-10 09:00:06,519 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 45 transitions and produced 44 states. [2022-02-10 09:00:06,525 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 09:00:06,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 09:00:06,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1807173236, now seen corresponding path program 1 times [2022-02-10 09:00:06,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 09:00:06,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116796490] [2022-02-10 09:00:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 09:00:06,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 09:00:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 09:00:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-10 09:00:06,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 09:00:06,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116796490] [2022-02-10 09:00:06,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116796490] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 09:00:06,699 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 09:00:06,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 09:00:06,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448088593] [2022-02-10 09:00:06,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 09:00:06,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 09:00:06,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 09:00:06,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 09:00:06,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 09:00:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 09:00:06,730 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 09:00:06,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-02-10 09:00:06,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 09:00:06,771 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 45 transitions and produced 44 states. [2022-02-10 09:00:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 09:00:06,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 09:00:06,772 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 09:00:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 09:00:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1807174166, now seen corresponding path program 1 times [2022-02-10 09:00:06,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 09:00:06,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555197815] [2022-02-10 09:00:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 09:00:06,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 09:00:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 09:00:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 09:00:06,908 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 09:00:06,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555197815] [2022-02-10 09:00:06,908 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555197815] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 09:00:06,908 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55174619] [2022-02-10 09:00:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 09:00:06,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 09:00:06,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 09:00:06,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 09:00:06,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 09:00:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 09:00:06,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 09:00:06,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 09:00:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 09:00:07,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 09:00:07,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 09:00:07,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55174619] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 09:00:07,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 09:00:07,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-02-10 09:00:07,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227200220] [2022-02-10 09:00:07,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 09:00:07,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 09:00:07,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 09:00:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 09:00:07,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 09:00:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 09:00:07,217 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 09:00:07,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-02-10 09:00:07,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 09:00:07,217 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 09:00:44,157 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 113668 transitions and produced 84831 states. [2022-02-10 09:00:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 09:00:44,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 09:00:44,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 09:00:44,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-02-10 09:00:44,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 09:00:44,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 09:00:44,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1841339564, now seen corresponding path program 2 times [2022-02-10 09:00:44,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 09:00:44,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893195439] [2022-02-10 09:00:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 09:00:44,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 09:00:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 09:00:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 09:00:44,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 09:00:44,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893195439] [2022-02-10 09:00:44,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893195439] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 09:00:44,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083404411] [2022-02-10 09:00:44,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 09:00:44,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 09:00:44,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 09:00:44,444 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) [2022-02-10 09:00:44,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 09:00:44,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 09:00:44,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 09:00:44,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 09:00:44,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 09:00:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 09:00:44,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 09:00:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 09:00:44,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083404411] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 09:00:44,604 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 09:00:44,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2022-02-10 09:00:44,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494924986] [2022-02-10 09:00:44,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 09:00:44,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 09:00:44,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 09:00:44,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 09:00:44,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-02-10 09:00:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 09:00:44,608 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 09:00:44,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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) [2022-02-10 09:00:44,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 09:00:44,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-02-10 09:00:44,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-10 09:01:15,387 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 76782 transitions and produced 58513 states. [2022-02-10 09:01:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 09:01:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 09:01:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-10 09:01:15,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 09:01:15,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 09:01:15,590 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-10 09:01:15,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 09:01:15,591 INFO L85 PathProgramCache]: Analyzing trace with hash -924500846, now seen corresponding path program 3 times [2022-02-10 09:01:15,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 09:01:15,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480383892] [2022-02-10 09:01:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 09:01:15,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 09:01:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 09:01:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 09:01:15,666 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 09:01:15,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480383892] [2022-02-10 09:01:15,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480383892] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 09:01:15,666 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990086679] [2022-02-10 09:01:15,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 09:01:15,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 09:01:15,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 09:01:15,667 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) [2022-02-10 09:01:15,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 09:01:15,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 09:01:15,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 09:01:15,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 09:01:15,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 09:01:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-10 09:01:15,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 09:01:15,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990086679] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 09:01:15,797 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 09:01:15,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 10 [2022-02-10 09:01:15,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106458950] [2022-02-10 09:01:15,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 09:01:15,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 09:01:15,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 09:01:15,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 09:01:15,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-02-10 09:01:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 09:01:15,799 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-10 09:01:15,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) [2022-02-10 09:01:15,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-02-10 09:01:15,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-02-10 09:01:15,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-10 09:01:15,799 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.