/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/fork_join_in_loop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 02:15:34,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 02:15:34,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 02:15:34,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 02:15:34,294 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 [2022-02-09 02:15:34,328 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 02:15:34,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 02:15:34,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 02:15:34,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 02:15:34,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 02:15:34,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 02:15:34,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 02:15:34,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 02:15:34,331 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 02:15:34,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 02:15:34,332 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 02:15:34,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 02:15:34,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 02:15:34,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 02:15:34,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 02:15:34,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 02:15:34,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 02:15:34,333 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 02:15:34,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 02:15:34,333 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 02:15:34,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 02:15:34,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 02:15:34,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 02:15:34,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 02:15:34,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 02:15:34,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 02:15:34,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 02:15:34,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 02:15:34,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 02:15:34,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 02:15:34,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 02:15:34,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 02:15:34,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 02:15:34,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 02:15:34,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 02:15:34,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 02:15:34,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 02:15:34,622 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 02:15:34,623 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 02:15:34,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_join_in_loop.bpl [2022-02-09 02:15:34,624 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_join_in_loop.bpl' [2022-02-09 02:15:34,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 02:15:34,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 02:15:34,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 02:15:34,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 02:15:34,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 02:15:34,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,672 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 02:15:34,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 02:15:34,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 02:15:34,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 02:15:34,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 02:15:34,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 02:15:34,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 02:15:34,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 02:15:34,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 02:15:34,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/1) ... [2022-02-09 02:15:34,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 02:15:34,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 02:15:34,729 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 02:15:34,749 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 02:15:34,764 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-02-09 02:15:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-02-09 02:15:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-02-09 02:15:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 02:15:34,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 02:15:34,766 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 02:15:34,806 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 02:15:34,808 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 02:15:34,880 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 02:15:34,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 02:15:34,886 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 02:15:34,889 INFO L202 PluginConnector]: Adding new model fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:15:34 BoogieIcfgContainer [2022-02-09 02:15:34,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 02:15:34,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 02:15:34,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 02:15:34,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 02:15:34,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:15:34" (1/2) ... [2022-02-09 02:15:34,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606c0b4a and model type fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 02:15:34, skipping insertion in model container [2022-02-09 02:15:34,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:15:34" (2/2) ... [2022-02-09 02:15:34,900 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_join_in_loop.bpl [2022-02-09 02:15:34,906 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 02:15:34,906 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 02:15:34,906 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 02:15:34,906 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 02:15:34,929 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 02:15:34,930 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 02:15:34,943 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 02:15:34,946 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-09 02:15:35,004 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 02:15:35,010 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 02:15:35,011 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-09 02:15:35,021 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 39 flow [2022-02-09 02:15:35,033 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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 02:15:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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 02:15:35,039 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-09 02:15:35,042 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-02-09 02:15:35,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-02-09 02:15:35,049 INFO L732 BasicCegarLoop]: Path program histogram: [] [2022-02-09 02:15:35,051 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-09 02:15:35,051 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-09 02:15:35,055 INFO L202 PluginConnector]: Adding new model fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.02 02:15:35 BasicIcfg [2022-02-09 02:15:35,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-09 02:15:35,058 INFO L158 Benchmark]: Toolchain (without parser) took 409.57ms. Allocated memory is still 177.2MB. Free memory was 142.1MB in the beginning and 123.6MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-02-09 02:15:35,058 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 02:15:35,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.74ms. Allocated memory is still 177.2MB. Free memory was 142.1MB in the beginning and 140.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-09 02:15:35,060 INFO L158 Benchmark]: Boogie Preprocessor took 15.54ms. Allocated memory is still 177.2MB. Free memory was 140.6MB in the beginning and 139.7MB in the end (delta: 896.7kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-09 02:15:35,061 INFO L158 Benchmark]: RCFGBuilder took 197.68ms. Allocated memory is still 177.2MB. Free memory was 139.6MB in the beginning and 131.5MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-02-09 02:15:35,062 INFO L158 Benchmark]: TraceAbstraction took 164.02ms. Allocated memory is still 177.2MB. Free memory was 131.0MB in the beginning and 123.6MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-09 02:15:35,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.74ms. Allocated memory is still 177.2MB. Free memory was 142.1MB in the beginning and 140.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 15.54ms. Allocated memory is still 177.2MB. Free memory was 140.6MB in the beginning and 139.7MB in the end (delta: 896.7kB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 197.68ms. Allocated memory is still 177.2MB. Free memory was 139.6MB in the beginning and 131.5MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 164.02ms. Allocated memory is still 177.2MB. Free memory was 131.0MB in the beginning and 123.6MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. 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: 31]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 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 02:15:35,114 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...