./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:06:19,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:06:19,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:06:19,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:06:19,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:06:19,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:06:19,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:06:19,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:06:19,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:06:19,483 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:06:19,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:06:19,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:06:19,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:06:19,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:06:19,485 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:06:19,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:06:19,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:06:19,486 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:06:19,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:06:19,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:06:19,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:06:19,491 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:06:19,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:06:19,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:06:19,492 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:06:19,492 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:06:19,492 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:06:19,493 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:06:19,493 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:06:19,493 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:06:19,494 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:06:19,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:06:19,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:06:19,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:06:19,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:06:19,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:06:19,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:06:19,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:06:19,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:06:19,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:06:19,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:06:19,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:06:19,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:06:19,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:06:19,497 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 [2024-11-10 22:06:19,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:06:19,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:06:19,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:06:19,784 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:06:19,784 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:06:19,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2024-11-10 22:06:21,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:06:21,500 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:06:21,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2024-11-10 22:06:21,521 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce0ec0739/01aa40e7c0fc43889134c27329d0a620/FLAG729bc3992 [2024-11-10 22:06:21,799 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce0ec0739/01aa40e7c0fc43889134c27329d0a620 [2024-11-10 22:06:21,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:06:21,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:06:21,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:06:21,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:06:21,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:06:21,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:06:21" (1/1) ... [2024-11-10 22:06:21,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447163ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:21, skipping insertion in model container [2024-11-10 22:06:21,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:06:21" (1/1) ... [2024-11-10 22:06:21,863 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:06:22,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:06:22,241 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:06:22,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:06:22,332 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:06:22,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22 WrapperNode [2024-11-10 22:06:22,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:06:22,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:06:22,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:06:22,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:06:22,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,377 INFO L138 Inliner]: procedures = 172, calls = 20, calls flagged for inlining = 6, calls inlined = 9, statements flattened = 103 [2024-11-10 22:06:22,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:06:22,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:06:22,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:06:22,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:06:22,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,415 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-10 22:06:22,416 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,421 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:06:22,428 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:06:22,428 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:06:22,428 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:06:22,429 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:22" (1/1) ... [2024-11-10 22:06:22,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:06:22,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:06:22,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:06:22,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:06:22,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:06:22,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:06:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:06:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 22:06:22,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 22:06:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:06:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:06:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:06:22,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:06:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:06:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:06:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:06:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:06:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:06:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:06:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:06:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:06:22,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:06:22,509 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:06:22,635 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:06:22,637 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:06:22,729 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc ~#l~0#1.base, ~#l~0#1.offset; [2024-11-10 22:06:22,730 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(~#l~0#1.base, ~#l~0#1.offset); srcloc: null [2024-11-10 22:06:22,833 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc thr1_~#l~0#1.base, thr1_~#l~0#1.offset; [2024-11-10 22:06:22,836 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(thr1_~#l~0#1.base, thr1_~#l~0#1.offset); srcloc: null [2024-11-10 22:06:22,837 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:06:22,837 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:06:22,994 WARN L170 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-11-10 22:06:22,997 WARN L170 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-11-10 22:06:23,005 WARN L170 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-11-10 22:06:23,007 WARN L170 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-11-10 22:06:23,019 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: assume true;call #t~mem4#1 := read~int#2(~#l~0#1.base, ~#l~0#1.offset, 4);assume !!(#t~mem4#1 % 4294967296 != ~s~0 % 4294967296);havoc #t~mem4#1;assume true;call #t~mem4#1 := read~int#2(~#l~0#1.base, ~#l~0#1.offset, 4);). Is there illegal control flow (e.g. loops) within an atomic block? at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionComplete(AtomicBlockAnalyzer.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionIsComplete(AtomicBlockAnalyzer.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:323) at de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.IcfgBuilderObserver.process(IcfgBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:166) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-10 22:06:23,027 INFO L158 Benchmark]: Toolchain (without parser) took 1223.50ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 91.4MB in the end (delta: 21.2MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2024-11-10 22:06:23,027 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:06:23,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.38ms. Allocated memory is still 167.8MB. Free memory was 111.9MB in the beginning and 125.9MB in the end (delta: -14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 22:06:23,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.39ms. Allocated memory is still 167.8MB. Free memory was 125.9MB in the beginning and 123.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:06:23,030 INFO L158 Benchmark]: Boogie Preprocessor took 48.21ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 121.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:06:23,031 INFO L158 Benchmark]: IcfgBuilder took 597.62ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 91.4MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-10 22:06:23,033 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 527.38ms. Allocated memory is still 167.8MB. Free memory was 111.9MB in the beginning and 125.9MB in the end (delta: -14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.39ms. Allocated memory is still 167.8MB. Free memory was 125.9MB in the beginning and 123.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.21ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 121.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 597.62ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 91.4MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: assume true;call #t~mem4#1 := read~int#2(~#l~0#1.base, ~#l~0#1.offset, 4);assume !!(#t~mem4#1 % 4294967296 != ~s~0 % 4294967296);havoc #t~mem4#1;assume true;call #t~mem4#1 := read~int#2(~#l~0#1.base, ~#l~0#1.offset, 4);). Is there illegal control flow (e.g. loops) within an atomic block? de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: assume true;call #t~mem4#1 := read~int#2(~#l~0#1.base, ~#l~0#1.offset, 4);assume !!(#t~mem4#1 % 4294967296 != ~s~0 % 4294967296);havoc #t~mem4#1;assume true;call #t~mem4#1 := read~int#2(~#l~0#1.base, ~#l~0#1.offset, 4);). Is there illegal control flow (e.g. loops) within an atomic block?: de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionComplete(AtomicBlockAnalyzer.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-10 22:06:23,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:06:25,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:06:25,360 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf [2024-11-10 22:06:25,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:06:25,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:06:25,397 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:06:25,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:06:25,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:06:25,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:06:25,403 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:06:25,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:06:25,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:06:25,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:06:25,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:06:25,404 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:06:25,405 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:06:25,405 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:06:25,405 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:06:25,405 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:06:25,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:06:25,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:06:25,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:06:25,408 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:06:25,408 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 22:06:25,409 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-10 22:06:25,409 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:06:25,409 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:06:25,410 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-10 22:06:25,410 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:06:25,410 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:06:25,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:06:25,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:06:25,412 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:06:25,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:06:25,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:06:25,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:06:25,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:06:25,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:06:25,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:06:25,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:06:25,414 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-10 22:06:25,415 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-10 22:06:25,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:06:25,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:06:25,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:06:25,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:06:25,416 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 [2024-11-10 22:06:25,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:06:25,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:06:25,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:06:25,794 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:06:25,794 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:06:25,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2024-11-10 22:06:27,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:06:27,665 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:06:27,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2024-11-10 22:06:27,680 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7faa069f1/5e839ccd1dc9415f8e16a468af7d6869/FLAG72003ac18 [2024-11-10 22:06:27,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7faa069f1/5e839ccd1dc9415f8e16a468af7d6869 [2024-11-10 22:06:27,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:06:27,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:06:27,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:06:27,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:06:27,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:06:27,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:06:27" (1/1) ... [2024-11-10 22:06:27,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf52c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:27, skipping insertion in model container [2024-11-10 22:06:27,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:06:27" (1/1) ... [2024-11-10 22:06:27,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:06:28,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:06:28,161 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:06:28,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:06:28,261 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:06:28,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28 WrapperNode [2024-11-10 22:06:28,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:06:28,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:06:28,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:06:28,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:06:28,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,319 INFO L138 Inliner]: procedures = 175, calls = 20, calls flagged for inlining = 6, calls inlined = 9, statements flattened = 103 [2024-11-10 22:06:28,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:06:28,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:06:28,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:06:28,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:06:28,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,361 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,387 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-10 22:06:28,387 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,399 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:06:28,418 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:06:28,418 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:06:28,418 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:06:28,419 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:06:28" (1/1) ... [2024-11-10 22:06:28,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:06:28,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:06:28,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:06:28,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:06:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-10 22:06:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-10 22:06:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-10 22:06:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 22:06:28,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 22:06:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:06:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:06:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:06:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:06:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-10 22:06:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-10 22:06:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-10 22:06:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-10 22:06:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-10 22:06:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-10 22:06:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:06:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:06:28,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:06:28,507 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:06:28,645 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:06:28,648 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:06:28,748 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc ~#l~0#1.base, ~#l~0#1.offset; [2024-11-10 22:06:28,748 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(~#l~0#1.base, ~#l~0#1.offset); srcloc: null [2024-11-10 22:06:28,846 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc thr1_~#l~0#1.base, thr1_~#l~0#1.offset; [2024-11-10 22:06:28,846 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(thr1_~#l~0#1.base, thr1_~#l~0#1.offset); srcloc: null [2024-11-10 22:06:28,848 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:06:28,848 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:06:29,004 WARN L170 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-11-10 22:06:29,006 WARN L170 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-11-10 22:06:29,025 WARN L170 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-11-10 22:06:29,028 WARN L170 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-11-10 22:06:29,036 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: assume true;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);assume !!(#t~mem4#1 != ~s~0);havoc #t~mem4#1;assume true;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);). Is there illegal control flow (e.g. loops) within an atomic block? at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionComplete(AtomicBlockAnalyzer.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionIsComplete(AtomicBlockAnalyzer.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:323) at de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.IcfgBuilderObserver.process(IcfgBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:166) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-10 22:06:29,042 INFO L158 Benchmark]: Toolchain (without parser) took 1344.77ms. Allocated memory is still 86.0MB. Free memory was 54.7MB in the beginning and 60.1MB in the end (delta: -5.4MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2024-11-10 22:06:29,042 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:06:29,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.24ms. Allocated memory is still 86.0MB. Free memory was 54.4MB in the beginning and 31.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 22:06:29,043 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.44ms. Allocated memory is still 86.0MB. Free memory was 31.3MB in the beginning and 29.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:06:29,043 INFO L158 Benchmark]: Boogie Preprocessor took 96.50ms. Allocated memory is still 86.0MB. Free memory was 28.9MB in the beginning and 63.2MB in the end (delta: -34.3MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2024-11-10 22:06:29,044 INFO L158 Benchmark]: IcfgBuilder took 622.34ms. Allocated memory is still 86.0MB. Free memory was 63.2MB in the beginning and 60.1MB in the end (delta: 3.1MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2024-11-10 22:06:29,049 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 58.7MB. Free memory was 43.5MB in the beginning and 43.4MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.24ms. Allocated memory is still 86.0MB. Free memory was 54.4MB in the beginning and 31.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.44ms. Allocated memory is still 86.0MB. Free memory was 31.3MB in the beginning and 29.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.50ms. Allocated memory is still 86.0MB. Free memory was 28.9MB in the beginning and 63.2MB in the end (delta: -34.3MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * IcfgBuilder took 622.34ms. Allocated memory is still 86.0MB. Free memory was 63.2MB in the beginning and 60.1MB in the end (delta: 3.1MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: assume true;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);assume !!(#t~mem4#1 != ~s~0);havoc #t~mem4#1;assume true;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);). Is there illegal control flow (e.g. loops) within an atomic block? de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: assume true;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);assume !!(#t~mem4#1 != ~s~0);havoc #t~mem4#1;assume true;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);). Is there illegal control flow (e.g. loops) within an atomic block?: de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionComplete(AtomicBlockAnalyzer.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-10 22:06:29,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: assume true;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);assume !!(#t~mem4#1 != ~s~0);havoc #t~mem4#1;assume true;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);). Is there illegal control flow (e.g. loops) within an atomic block?