/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/join_multiple_return_values.bpl
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This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd
[2022-02-09 02:15:40,026 INFO L177 SettingsManager]: Resetting all preferences to default values...
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[2022-02-09 02:15:40,100 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-FA-NoLbe.epf
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[2022-02-09 02:15:40,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-09 02:15:40,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-02-09 02:15:40,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-02-09 02:15:40,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-02-09 02:15:40,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-02-09 02:15:40,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-02-09 02:15:40,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-02-09 02:15:40,118 INFO L138 SettingsManager]: * Use SBE=true
[2022-02-09 02:15:40,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-09 02:15:40,118 INFO L138 SettingsManager]: * sizeof long=4
[2022-02-09 02:15:40,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-09 02:15:40,118 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-02-09 02:15:40,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-09 02:15:40,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-09 02:15:40,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-09 02:15:40,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-09 02:15:40,120 INFO L138 SettingsManager]: * sizeof long double=12
[2022-02-09 02:15:40,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-09 02:15:40,120 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-09 02:15:40,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-09 02:15:40,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-09 02:15:40,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-09 02:15:40,120 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-09 02:15:40,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-09 02:15:40,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-09 02:15:40,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-09 02:15:40,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-02-09 02:15:40,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-02-09 02:15:40,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-02-09 02:15:40,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-02-09 02:15:40,121 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2022-02-09 02:15:40,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-09 02:15:40,122 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-02-09 02:15:40,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-09 02:15:40,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-09 02:15:40,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-09 02:15:40,304 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-02-09 02:15:40,309 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized
[2022-02-09 02:15:40,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/join_multiple_return_values.bpl
[2022-02-09 02:15:40,310 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/join_multiple_return_values.bpl'
[2022-02-09 02:15:40,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-09 02:15:40,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-09 02:15:40,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-02-09 02:15:40,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-02-09 02:15:40,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-02-09 02:15:40,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,348 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2022-02-09 02:15:40,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-02-09 02:15:40,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-09 02:15:40,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-09 02:15:40,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-09 02:15:40,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-09 02:15:40,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-09 02:15:40,361 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-09 02:15:40,361 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-09 02:15:40,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/1) ...
[2022-02-09 02:15:40,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-09 02:15:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-09 02:15:40,388 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)
[2022-02-09 02:15:40,407 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
[2022-02-09 02:15:40,421 INFO L130 BoogieDeclarations]: Found specification of procedure foo
[2022-02-09 02:15:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure foo
[2022-02-09 02:15:40,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-09 02:15:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-09 02:15:40,424 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-02-09 02:15:40,456 INFO L234 CfgBuilder]: Building ICFG
[2022-02-09 02:15:40,457 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-09 02:15:40,510 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-09 02:15:40,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-09 02:15:40,517 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2022-02-09 02:15:40,518 INFO L202 PluginConnector]: Adding new model join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:15:40 BoogieIcfgContainer
[2022-02-09 02:15:40,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-09 02:15:40,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-09 02:15:40,520 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-09 02:15:40,523 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-09 02:15:40,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:40" (1/2) ...
[2022-02-09 02:15:40,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4408d253 and model type join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 02:15:40, skipping insertion in model container
[2022-02-09 02:15:40,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:15:40" (2/2) ...
[2022-02-09 02:15:40,526 INFO L111 eAbstractionObserver]: Analyzing ICFG join_multiple_return_values.bpl
[2022-02-09 02:15:40,529 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-02-09 02:15:40,530 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-02-09 02:15:40,530 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-09 02:15:40,530 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-02-09 02:15:40,543 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,543 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,543 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,544 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,544 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,544 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,544 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,544 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,545 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,545 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,545 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,545 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,545 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,546 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,548 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,548 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes.
[2022-02-09 02:15:40,551 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions.
[2022-02-09 02:15:40,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-09 02:15:40,585 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=FINITE_AUTOMATA, 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
[2022-02-09 02:15:40,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-02-09 02:15:40,591 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 15 transitions, 38 flow
[2022-02-09 02:15:40,599 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 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)
[2022-02-09 02:15:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 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)
[2022-02-09 02:15:40,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-02-09 02:15:40,605 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-09 02:15:40,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-09 02:15:40,606 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2022-02-09 02:15:40,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-09 02:15:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1650279701, now seen corresponding path program 1 times
[2022-02-09 02:15:40,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-09 02:15:40,620 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282045629]
[2022-02-09 02:15:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-09 02:15:40,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-09 02:15:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-09 02:15:40,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-09 02:15:40,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-09 02:15:40,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282045629]
[2022-02-09 02:15:40,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282045629] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-09 02:15:40,839 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-09 02:15:40,839 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-09 02:15:40,840 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714994994]
[2022-02-09 02:15:40,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-09 02:15:40,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-02-09 02:15:40,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-09 02:15:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-02-09 02:15:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2022-02-09 02:15:40,865 INFO L87 Difference]: Start difference. First operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 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) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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)
[2022-02-09 02:15:41,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-09 02:15:41,029 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions.
[2022-02-09 02:15:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-02-09 02:15:41,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) Word has length 9
[2022-02-09 02:15:41,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-09 02:15:41,034 INFO L225 Difference]: With dead ends: 13
[2022-02-09 02:15:41,034 INFO L226 Difference]: Without dead ends: 0
[2022-02-09 02:15:41,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156
[2022-02-09 02:15:41,046 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-09 02:15:41,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 14 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-09 02:15:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-02-09 02:15:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-02-09 02:15:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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)
[2022-02-09 02:15:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-02-09 02:15:41,086 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9
[2022-02-09 02:15:41,086 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-09 02:15:41,086 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-02-09 02:15:41,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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)
[2022-02-09 02:15:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-02-09 02:15:41,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-02-09 02:15:41,088 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining)
[2022-02-09 02:15:41,088 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining)
[2022-02-09 02:15:41,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-09 02:15:41,091 INFO L732 BasicCegarLoop]: Path program histogram: [1]
[2022-02-09 02:15:41,093 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2022-02-09 02:15:41,093 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-09 02:15:41,096 INFO L202 PluginConnector]: Adding new model join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 02:15:41 BasicIcfg
[2022-02-09 02:15:41,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-09 02:15:41,096 INFO L158 Benchmark]: Toolchain (without parser) took 765.69ms. Allocated memory was 164.6MB in the beginning and 221.2MB in the end (delta: 56.6MB). Free memory was 121.6MB in the beginning and 194.0MB in the end (delta: -72.4MB). There was no memory consumed. Max. memory is 8.0GB.
[2022-02-09 02:15:41,097 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 164.6MB. Free memory was 122.7MB in the beginning and 122.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB.
[2022-02-09 02:15:41,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.26ms. Allocated memory is still 164.6MB. Free memory was 121.5MB in the beginning and 120.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-09 02:15:41,099 INFO L158 Benchmark]: Boogie Preprocessor took 10.02ms. Allocated memory is still 164.6MB. Free memory was 120.0MB in the beginning and 119.1MB in the end (delta: 850.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-09 02:15:41,100 INFO L158 Benchmark]: RCFGBuilder took 157.10ms. Allocated memory is still 164.6MB. Free memory was 119.1MB in the beginning and 111.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB.
[2022-02-09 02:15:41,100 INFO L158 Benchmark]: TraceAbstraction took 576.06ms. Allocated memory was 164.6MB in the beginning and 221.2MB in the end (delta: 56.6MB). Free memory was 110.5MB in the beginning and 194.0MB in the end (delta: -83.5MB). There was no memory consumed. Max. memory is 8.0GB.
[2022-02-09 02:15:41,101 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 0.10ms. Allocated memory is still 164.6MB. Free memory was 122.7MB in the beginning and 122.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB.
* Boogie Procedure Inliner took 17.26ms. Allocated memory is still 164.6MB. Free memory was 121.5MB in the beginning and 120.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 10.02ms. Allocated memory is still 164.6MB. Free memory was 120.0MB in the beginning and 119.1MB in the end (delta: 850.7kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 157.10ms. Allocated memory is still 164.6MB. Free memory was 119.1MB in the beginning and 111.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB.
* TraceAbstraction took 576.06ms. Allocated memory was 164.6MB in the beginning and 221.2MB in the end (delta: 56.6MB). Free memory was 110.5MB in the beginning and 194.0MB in the end (delta: -83.5MB). There was no memory consumed. Max. memory is 8.0GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- 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: 23]: 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 3 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 6 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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!
[2022-02-09 02:15:41,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...