/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationInline.xml -s ../../../trunk/examples/settings/ai/thread-modular/svcomp-Reach-32bit-Automizer_Default+AIv2_OCT_FLOW_INSENSITIVE.epf -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/queue-add-2-nl.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.fs.absint-concur-c9b613c-m [2022-09-21 14:24:47,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-21 14:24:47,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-21 14:24:47,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-21 14:24:47,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-21 14:24:47,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-21 14:24:47,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-21 14:24:47,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-21 14:24:47,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-21 14:24:47,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-21 14:24:47,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-21 14:24:47,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-21 14:24:47,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-21 14:24:47,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-21 14:24:47,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-21 14:24:47,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-21 14:24:47,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-21 14:24:47,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-21 14:24:47,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-21 14:24:47,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-21 14:24:47,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-21 14:24:47,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-21 14:24:47,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-21 14:24:47,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-21 14:24:47,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-21 14:24:47,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-21 14:24:47,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-21 14:24:47,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-21 14:24:47,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-21 14:24:47,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-21 14:24:47,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-21 14:24:47,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-21 14:24:47,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-21 14:24:47,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-21 14:24:47,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-21 14:24:47,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-21 14:24:47,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-21 14:24:47,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-21 14:24:47,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-21 14:24:47,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-21 14:24:47,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-21 14:24:47,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/thread-modular/svcomp-Reach-32bit-Automizer_Default+AIv2_OCT_FLOW_INSENSITIVE.epf [2022-09-21 14:24:47,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-21 14:24:47,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-21 14:24:47,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-21 14:24:47,630 INFO L138 SettingsManager]: * Log level for plugins=info [2022-09-21 14:24:47,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-21 14:24:47,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-21 14:24:47,631 INFO L138 SettingsManager]: * User list type=DISABLED [2022-09-21 14:24:47,631 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2022-09-21 14:24:47,637 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2022-09-21 14:24:47,638 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-09-21 14:24:47,638 INFO L138 SettingsManager]: * Abstract domain=OctagonDomain [2022-09-21 14:24:47,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-21 14:24:47,640 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-21 14:24:47,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-21 14:24:47,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-21 14:24:47,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-21 14:24:47,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-21 14:24:47,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-21 14:24:47,641 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-21 14:24:47,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-21 14:24:47,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-21 14:24:47,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-21 14:24:47,642 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2022-09-21 14:24:47,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-21 14:24:47,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-21 14:24:47,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-21 14:24:47,643 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-09-21 14:24:47,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-21 14:24:47,644 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2022-09-21 14:24:47,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-21 14:24:47,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-21 14:24:47,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-21 14:24:47,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-21 14:24:47,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-21 14:24:47,877 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-21 14:24:47,880 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-21 14:24:47,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/queue-add-2-nl.wvr.bpl [2022-09-21 14:24:47,881 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/queue-add-2-nl.wvr.bpl' [2022-09-21 14:24:47,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-21 14:24:47,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-09-21 14:24:47,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-21 14:24:47,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-21 14:24:47,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-21 14:24:47,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,928 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-09-21 14:24:47,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-21 14:24:47,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-21 14:24:47,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-21 14:24:47,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-21 14:24:47,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-21 14:24:47,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-21 14:24:47,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-21 14:24:47,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-21 14:24:47,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.09 02:24:47" (1/1) ... [2022-09-21 14:24:47,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-21 14:24:47,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-21 14:24:47,968 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) [2022-09-21 14:24:47,989 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 [2022-09-21 14:24:48,009 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-09-21 14:24:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-21 14:24:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-21 14:24:48,009 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-09-21 14:24:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-21 14:24:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-21 14:24:48,010 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-09-21 14:24:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-21 14:24:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-21 14:24:48,011 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-21 14:24:48,052 INFO L234 CfgBuilder]: Building ICFG [2022-09-21 14:24:48,053 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-21 14:24:48,220 INFO L275 CfgBuilder]: Performing block encoding [2022-09-21 14:24:48,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-21 14:24:48,252 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-21 14:24:48,254 INFO L202 PluginConnector]: Adding new model queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 02:24:48 BoogieIcfgContainer [2022-09-21 14:24:48,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-21 14:24:48,255 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2022-09-21 14:24:48,255 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2022-09-21 14:24:48,255 INFO L275 PluginConnector]: Abstract Interpretation initialized [2022-09-21 14:24:48,256 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "queue-add-2-nl.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 02:24:48" (1/1) ... [2022-09-21 14:24:48,301 INFO L129 ointEngineConcurrent]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,302 INFO L155 ointEngineConcurrent]: Starting outer Fixpoint iteration number 1 [2022-09-21 14:24:48,303 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,366 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,495 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,499 INFO L155 ointEngineConcurrent]: Starting outer Fixpoint iteration number 2 [2022-09-21 14:24:48,499 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,507 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,544 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,557 INFO L155 ointEngineConcurrent]: Starting outer Fixpoint iteration number 3 [2022-09-21 14:24:48,557 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,561 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,615 INFO L115 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2022-09-21 14:24:48,640 INFO L320 AbstractInterpreter]: Some error location(s) were reachable [2022-09-21 14:24:48,650 INFO L329 AbstractInterpreter]: No benchmarks available [2022-09-21 14:24:48,651 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2022-09-21 14:24:48,653 INFO L158 Benchmark]: Toolchain (without parser) took 747.56ms. Allocated memory is still 179.3MB. Free memory was 139.2MB in the beginning and 135.9MB in the end (delta: 3.3MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-09-21 14:24:48,654 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.15ms. Allocated memory is still 179.3MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-21 14:24:48,655 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.45ms. Allocated memory is still 179.3MB. Free memory was 139.2MB in the beginning and 137.7MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-21 14:24:48,656 INFO L158 Benchmark]: Boogie Preprocessor took 12.81ms. Allocated memory is still 179.3MB. Free memory was 137.7MB in the beginning and 136.7MB in the end (delta: 923.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-21 14:24:48,657 INFO L158 Benchmark]: RCFGBuilder took 310.40ms. Allocated memory is still 179.3MB. Free memory was 136.6MB in the beginning and 126.7MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-09-21 14:24:48,658 INFO L158 Benchmark]: Abstract Interpretation took 395.65ms. Allocated memory is still 179.3MB. Free memory was 126.6MB in the beginning and 135.9MB in the end (delta: -9.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-21 14:24:48,662 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 0.15ms. Allocated memory is still 179.3MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.45ms. Allocated memory is still 179.3MB. Free memory was 139.2MB in the beginning and 137.7MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 12.81ms. Allocated memory is still 179.3MB. Free memory was 137.7MB in the beginning and 136.7MB in the end (delta: 923.4kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 310.40ms. Allocated memory is still 179.3MB. Free memory was 136.6MB in the beginning and 126.7MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Abstract Interpretation took 395.65ms. Allocated memory is still 179.3MB. Free memory was 126.6MB in the beginning and 135.9MB in the end (delta: -9.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 66]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L60] 0 assume q_front == q_back && (x == y && x == 0) && N >= 0; [L61] FORK 0 fork 1 thread1(); [L62] FORK 0 fork 2, 2 thread2(); [L63] JOIN 0 join 1; [L64] JOIN 0 join 2, 2; [L65] 0 assume !(x == y && s == N); [L66] 0 assert false; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-09-21 14:24:48,702 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...