/usr/bin/java -Xmx16000000000 -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-dev-bc79526 [2022-01-18 03:52:38,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:52:38,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:52:38,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 03:52:38,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 03:52:38,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 03:52:38,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 03:52:38,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 03:52:38,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 03:52:38,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 03:52:38,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 03:52:38,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 03:52:38,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 03:52:38,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 03:52:38,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 03:52:38,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 03:52:38,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 03:52:38,095 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 [2022-01-18 03:52:38,117 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:52:38,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:52:38,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:52:38,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:52:38,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:52:38,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:52:38,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:52:38,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:52:38,119 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:52:38,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:52:38,120 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:52:38,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:52:38,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:52:38,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:52:38,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:52:38,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:52:38,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:52:38,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:52:38,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:52:38,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:52:38,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:52:38,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:52:38,122 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:52:38,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:52:38,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:52:38,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:52:38,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:52:38,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:52:38,301 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 03:52:38,304 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 03:52:38,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_join_in_loop.bpl [2022-01-18 03:52:38,306 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_join_in_loop.bpl' [2022-01-18 03:52:38,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:52:38,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 03:52:38,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:52:38,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:52:38,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:52:38,346 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 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,350 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 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,354 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 03:52:38,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:52:38,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:52:38,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:52:38,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:52:38,361 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 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,361 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 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,362 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 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,362 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 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,363 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 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,365 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 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,365 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 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:52:38,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:52:38,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:52:38,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:52:38,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:38" (1/1) ... [2022-01-18 03:52:38,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:52:38,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:52:38,396 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) [2022-01-18 03:52:38,401 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 [2022-01-18 03:52:38,434 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2022-01-18 03:52:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-01-18 03:52:38,434 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-01-18 03:52:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:52:38,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:52:38,435 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 03:52:38,464 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:52:38,465 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:52:38,524 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:52:38,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:52:38,529 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 03:52:38,531 INFO L202 PluginConnector]: Adding new model fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:52:38 BoogieIcfgContainer [2022-01-18 03:52:38,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:52:38,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:52:38,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:52:38,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:52:38,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:52:38" (1/2) ... [2022-01-18 03:52:38,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42447d2a and model type fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:52:38, skipping insertion in model container [2022-01-18 03:52:38,540 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 18.01 03:52:38" (2/2) ... [2022-01-18 03:52:38,541 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_join_in_loop.bpl [2022-01-18 03:52:38,553 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:52:38,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:52:38,553 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:52:38,553 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:52:38,575 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:52:38,575 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:52:38,588 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:52:38,590 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 03:52:38,628 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:52:38,636 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, 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 [2022-01-18 03:52:38,636 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 03:52:38,643 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 39 flow [2022-01-18 03:52:38,652 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) [2022-01-18 03:52:38,654 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) [2022-01-18 03:52:38,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 03:52:38,660 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-01-18 03:52:38,661 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-01-18 03:52:38,668 INFO L732 BasicCegarLoop]: Path program histogram: [] [2022-01-18 03:52:38,670 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 03:52:38,670 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:52:38,673 INFO L202 PluginConnector]: Adding new model fork_join_in_loop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:52:38 BasicIcfg [2022-01-18 03:52:38,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:52:38,674 INFO L158 Benchmark]: Toolchain (without parser) took 352.51ms. Allocated memory is still 356.5MB. Free memory was 318.0MB in the beginning and 299.8MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-18 03:52:38,675 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 356.5MB. Free memory is still 319.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:52:38,675 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.96ms. Allocated memory is still 356.5MB. Free memory was 318.0MB in the beginning and 316.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:52:38,676 INFO L158 Benchmark]: Boogie Preprocessor took 9.55ms. Allocated memory is still 356.5MB. Free memory was 316.4MB in the beginning and 315.6MB in the end (delta: 875.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:52:38,677 INFO L158 Benchmark]: RCFGBuilder took 164.64ms. Allocated memory is still 356.5MB. Free memory was 315.6MB in the beginning and 307.5MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2022-01-18 03:52:38,677 INFO L158 Benchmark]: TraceAbstraction took 139.24ms. Allocated memory is still 356.5MB. Free memory was 307.0MB in the beginning and 299.8MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2022-01-18 03:52:38,683 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 356.5MB. Free memory is still 319.1MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.96ms. Allocated memory is still 356.5MB. Free memory was 318.0MB in the beginning and 316.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 9.55ms. Allocated memory is still 356.5MB. Free memory was 316.4MB in the beginning and 315.6MB in the end (delta: 875.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 164.64ms. Allocated memory is still 356.5MB. Free memory was 315.6MB in the beginning and 307.5MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * TraceAbstraction took 139.24ms. Allocated memory is still 356.5MB. Free memory was 307.0MB in the beginning and 299.8MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * 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! [2022-01-18 03:52:38,713 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...