/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-symm.wvr.bpl
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a
[2022-02-20 11:16:45,416 INFO L177 SettingsManager]: Resetting all preferences to default values...
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[2022-02-20 11:16:45,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2022-02-20 11:16:45,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-02-20 11:16:45,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf
[2022-02-20 11:16:45,531 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-20 11:16:45,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-20 11:16:45,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-02-20 11:16:45,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-02-20 11:16:45,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-02-20 11:16:45,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-02-20 11:16:45,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * Use SBE=true
[2022-02-20 11:16:45,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * sizeof long=4
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * sizeof long double=12
[2022-02-20 11:16:45,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-20 11:16:45,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-20 11:16:45,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * Construct finite automaton lazily=true
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-02-20 11:16:45,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-02-20 11:16:45,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-02-20 11:16:45,535 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2022-02-20 11:16:45,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2022-02-20 11:16:45,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-20 11:16:45,535 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS
[2022-02-20 11:16:45,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-02-20 11:16:45,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-20 11:16:45,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-20 11:16:45,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-20 11:16:45,736 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-02-20 11:16:45,736 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2022-02-20 11:16:45,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-symm.wvr.bpl
[2022-02-20 11:16:45,737 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-symm.wvr.bpl'
[2022-02-20 11:16:45,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-20 11:16:45,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-20 11:16:45,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-02-20 11:16:45,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-02-20 11:16:45,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-02-20 11:16:45,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,776 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2022-02-20 11:16:45,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-02-20 11:16:45,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-20 11:16:45,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-20 11:16:45,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-20 11:16:45,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-20 11:16:45,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-20 11:16:45,788 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-20 11:16:45,788 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-20 11:16:45,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/1) ...
[2022-02-20 11:16:45,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-20 11:16:45,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-20 11:16:45,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-02-20 11:16:45,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-02-20 11:16:45,842 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2022-02-20 11:16:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2022-02-20 11:16:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2022-02-20 11:16:45,843 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2022-02-20 11:16:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2022-02-20 11:16:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2022-02-20 11:16:45,843 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2022-02-20 11:16:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-20 11:16:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-20 11:16:45,843 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-02-20 11:16:45,875 INFO L234 CfgBuilder]: Building ICFG
[2022-02-20 11:16:45,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-20 11:16:45,952 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-20 11:16:45,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-20 11:16:45,958 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2022-02-20 11:16:45,960 INFO L202 PluginConnector]: Adding new model file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:16:45 BoogieIcfgContainer
[2022-02-20 11:16:45,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-20 11:16:45,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-20 11:16:45,963 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-20 11:16:45,965 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-20 11:16:45,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 11:16:45" (1/2) ...
[2022-02-20 11:16:45,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5797016b and model type file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:16:45, skipping insertion in model container
[2022-02-20 11:16:45,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:16:45" (2/2) ...
[2022-02-20 11:16:45,966 INFO L111 eAbstractionObserver]: Analyzing ICFG file-item-symm.wvr.bpl
[2022-02-20 11:16:45,972 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-02-20 11:16:45,972 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-02-20 11:16:45,972 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-20 11:16:45,973 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-02-20 11:16:46,012 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2022-02-20 11:16:46,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-02-20 11:16:46,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-20 11:16:46,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2022-02-20 11:16:46,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2022-02-20 11:16:46,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-20 11:16:46,125 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true
[2022-02-20 11:16:46,125 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2022-02-20 11:16:46,175 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 15 transitions and produced 16 states.
[2022-02-20 11:16:46,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-20 11:16:46,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-20 11:16:46,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1258387211, now seen corresponding path program 1 times
[2022-02-20 11:16:46,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-20 11:16:46,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234478848]
[2022-02-20 11:16:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-20 11:16:46,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-20 11:16:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-20 11:16:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-20 11:16:46,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-20 11:16:46,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234478848]
[2022-02-20 11:16:46,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234478848] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-20 11:16:46,903 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-20 11:16:46,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-20 11:16:46,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136787174]
[2022-02-20 11:16:46,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-20 11:16:46,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-02-20 11:16:46,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-20 11:16:46,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-02-20 11:16:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-20 11:16:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-02-20 11:16:46,932 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-20 11:16:46,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-20 11:16:46,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.
[2022-02-20 11:16:47,047 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 45 transitions and produced 46 states.
[2022-02-20 11:16:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-02-20 11:16:47,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-20 11:16:47,048 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2022-02-20 11:16:47,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-20 11:16:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash -467092247, now seen corresponding path program 2 times
[2022-02-20 11:16:47,050 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-20 11:16:47,050 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026268868]
[2022-02-20 11:16:47,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-20 11:16:47,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-20 11:16:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-20 11:16:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-20 11:16:47,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-20 11:16:47,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026268868]
[2022-02-20 11:16:47,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026268868] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-20 11:16:47,416 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-20 11:16:47,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-02-20 11:16:47,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804606452]
[2022-02-20 11:16:47,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-20 11:16:47,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-02-20 11:16:47,420 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-20 11:16:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-02-20 11:16:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-02-20 11:16:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-02-20 11:16:47,422 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-20 11:16:47,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-20 11:16:47,422 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states.
[2022-02-20 11:16:47,423 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.
[2022-02-20 11:16:47,519 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 73 transitions and produced 74 states.
[2022-02-20 11:16:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-02-20 11:16:47,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-02-20 11:16:47,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining)
[2022-02-20 11:16:47,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining)
[2022-02-20 11:16:47,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining)
[2022-02-20 11:16:47,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-20 11:16:47,535 INFO L732 BasicCegarLoop]: Path program histogram: [2]
[2022-02-20 11:16:47,537 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2022-02-20 11:16:47,537 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-20 11:16:47,539 INFO L202 PluginConnector]: Adding new model file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 11:16:47 BasicIcfg
[2022-02-20 11:16:47,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-20 11:16:47,540 INFO L158 Benchmark]: Toolchain (without parser) took 1781.05ms. Allocated memory was 191.9MB in the beginning and 239.1MB in the end (delta: 47.2MB). Free memory was 156.9MB in the beginning and 120.3MB in the end (delta: 36.7MB). Peak memory consumption was 84.9MB. Max. memory is 8.0GB.
[2022-02-20 11:16:47,540 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 191.9MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-20 11:16:47,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.34ms. Allocated memory is still 191.9MB. Free memory was 156.9MB in the beginning and 155.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-02-20 11:16:47,541 INFO L158 Benchmark]: Boogie Preprocessor took 9.46ms. Allocated memory is still 191.9MB. Free memory was 155.3MB in the beginning and 154.5MB in the end (delta: 773.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-20 11:16:47,543 INFO L158 Benchmark]: RCFGBuilder took 172.95ms. Allocated memory is still 191.9MB. Free memory was 154.4MB in the beginning and 146.1MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB.
[2022-02-20 11:16:47,543 INFO L158 Benchmark]: TraceAbstraction took 1576.97ms. Allocated memory was 191.9MB in the beginning and 239.1MB in the end (delta: 47.2MB). Free memory was 145.6MB in the beginning and 120.3MB in the end (delta: 25.3MB). Peak memory consumption was 73.3MB. Max. memory is 8.0GB.
[2022-02-20 11:16:47,547 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 0.09ms. Allocated memory is still 191.9MB. Free memory is still 158.0MB. There was no memory consumed. Max. memory is 8.0GB.
* Boogie Procedure Inliner took 17.34ms. Allocated memory is still 191.9MB. Free memory was 156.9MB in the beginning and 155.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 9.46ms. Allocated memory is still 191.9MB. Free memory was 155.3MB in the beginning and 154.5MB in the end (delta: 773.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 172.95ms. Allocated memory is still 191.9MB. Free memory was 154.4MB in the beginning and 146.1MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB.
* TraceAbstraction took 1576.97ms. Allocated memory was 191.9MB in the beginning and 239.1MB in the end (delta: 47.2MB). Free memory was 145.6MB in the beginning and 120.3MB in the end (delta: 25.3MB). Peak memory consumption was 73.3MB. 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
- PositiveResult [Line: 38]: assertion always holds
For all program executions holds that assertion always holds at this location
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2022-02-20 11:16:47,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0
[2022-02-20 11:16:47,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...