./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/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/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:29:12,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:29:12,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:29:12,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:29:12,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:29:12,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:29:12,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:29:12,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:29:12,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:29:12,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:29:12,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:29:12,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:29:12,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:29:12,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:29:12,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:29:12,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:29:12,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:29:12,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:29:12,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:29:12,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:29:12,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:29:12,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:29:12,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:29:12,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:29:12,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:29:12,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:29:12,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:29:12,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:29:12,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:29:12,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:29:12,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:29:12,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:29:12,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:29:12,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:29:12,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:29:12,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:29:12,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:29:12,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:29:12,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:29:12,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:29:12,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:29:12,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:29:12,456 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:29:12,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:29:12,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:29:12,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:29:12,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:29:12,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:29:12,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:29:12,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:29:12,463 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:29:12,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:29:12,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:29:12,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:29:12,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:29:12,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:29:12,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:29:12,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:29:12,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:29:12,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:29:12,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:29:12,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:29:12,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:29:12,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:29:12,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:29:12,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:29:12,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:29:12,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:29:12,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:29:12,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:29:12,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:29:12,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:29:12,468 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:29:12,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:29:12,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:29:12,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:29:12,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f [2021-12-15 12:29:12,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:29:12,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:29:12,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:29:12,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:29:12,759 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:29:12,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-12-15 12:29:12,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97e92a5ce/580fbcc5c0e846a3b6f2871ff6c2fb9c/FLAG881a05a01 [2021-12-15 12:29:13,208 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:29:13,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-12-15 12:29:13,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97e92a5ce/580fbcc5c0e846a3b6f2871ff6c2fb9c/FLAG881a05a01 [2021-12-15 12:29:13,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97e92a5ce/580fbcc5c0e846a3b6f2871ff6c2fb9c [2021-12-15 12:29:13,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:29:13,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:29:13,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:29:13,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:29:13,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:29:13,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b26d1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13, skipping insertion in model container [2021-12-15 12:29:13,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:29:13,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:29:13,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2021-12-15 12:29:13,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:29:13,812 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:29:13,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2021-12-15 12:29:13,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:29:13,864 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:29:13,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13 WrapperNode [2021-12-15 12:29:13,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:29:13,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:29:13,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:29:13,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:29:13,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,899 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2021-12-15 12:29:13,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:29:13,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:29:13,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:29:13,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:29:13,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:29:13,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:29:13,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:29:13,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:29:13,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:13" (1/1) ... [2021-12-15 12:29:13,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:29:13,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:29:13,972 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) [2021-12-15 12:29:13,996 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 [2021-12-15 12:29:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:29:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-15 12:29:14,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-15 12:29:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-15 12:29:14,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-15 12:29:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:29:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:29:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 12:29:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:29:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:29:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:29:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:29:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 12:29:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:29:14,015 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-15 12:29:14,128 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:29:14,130 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:29:14,341 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:29:14,368 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-12-15 12:29:14,372 INFO L158 Benchmark]: Toolchain (without parser) took 761.09ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 41.0MB in the beginning and 77.3MB in the end (delta: -36.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:29:14,373 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory was 57.3MB in the beginning and 57.2MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:29:14,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.21ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 40.7MB in the beginning and 79.3MB in the end (delta: -38.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-12-15 12:29:14,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.68ms. Allocated memory is still 107.0MB. Free memory was 79.3MB in the beginning and 77.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:29:14,375 INFO L158 Benchmark]: Boogie Preprocessor took 41.20ms. Allocated memory is still 107.0MB. Free memory was 77.3MB in the beginning and 76.7MB in the end (delta: 607.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:29:14,375 INFO L158 Benchmark]: RCFGBuilder took 427.87ms. Allocated memory is still 107.0MB. Free memory was 76.4MB in the beginning and 77.3MB in the end (delta: -893.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 12:29:14,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory was 57.3MB in the beginning and 57.2MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.21ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 40.7MB in the beginning and 79.3MB in the end (delta: -38.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.68ms. Allocated memory is still 107.0MB. Free memory was 79.3MB in the beginning and 77.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.20ms. Allocated memory is still 107.0MB. Free memory was 77.3MB in the beginning and 76.7MB in the end (delta: 607.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 427.87ms. Allocated memory is still 107.0MB. Free memory was 76.4MB in the beginning and 77.3MB in the end (delta: -893.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:29:14,415 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/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/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:29:16,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:29:16,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:29:16,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:29:16,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:29:16,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:29:16,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:29:16,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:29:16,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:29:16,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:29:16,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:29:16,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:29:16,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:29:16,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:29:16,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:29:16,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:29:16,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:29:16,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:29:16,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:29:16,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:29:16,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:29:16,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:29:16,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:29:16,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:29:16,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:29:16,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:29:16,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:29:16,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:29:16,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:29:16,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:29:16,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:29:16,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:29:16,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:29:16,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:29:16,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:29:16,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:29:16,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:29:16,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:29:16,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:29:16,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:29:16,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:29:16,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:29:16,407 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:29:16,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:29:16,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:29:16,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:29:16,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:29:16,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:29:16,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:29:16,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:29:16,411 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:29:16,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:29:16,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:29:16,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:29:16,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:29:16,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:29:16,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:29:16,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:29:16,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:29:16,413 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:29:16,414 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:29:16,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:29:16,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:29:16,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:29:16,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:29:16,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:29:16,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:29:16,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:29:16,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:29:16,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:29:16,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:29:16,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:29:16,422 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:29:16,422 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:29:16,422 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:29:16,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:29:16,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:29:16,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:29:16,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:29:16,423 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f [2021-12-15 12:29:16,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:29:16,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:29:16,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:29:16,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:29:16,777 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:29:16,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-12-15 12:29:16,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60636787/941a2d9cb494483190758131273f589c/FLAG032bc4da9 [2021-12-15 12:29:17,254 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:29:17,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-12-15 12:29:17,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60636787/941a2d9cb494483190758131273f589c/FLAG032bc4da9 [2021-12-15 12:29:17,276 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60636787/941a2d9cb494483190758131273f589c [2021-12-15 12:29:17,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:29:17,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:29:17,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:29:17,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:29:17,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:29:17,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d81d78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17, skipping insertion in model container [2021-12-15 12:29:17,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:29:17,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:29:17,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2021-12-15 12:29:17,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:29:17,504 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:29:17,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2021-12-15 12:29:17,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:29:17,575 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:29:17,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17 WrapperNode [2021-12-15 12:29:17,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:29:17,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:29:17,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:29:17,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:29:17,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,605 INFO L137 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2021-12-15 12:29:17,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:29:17,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:29:17,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:29:17,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:29:17,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:29:17,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:29:17,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:29:17,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:29:17,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:29:17,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:29:17,658 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) [2021-12-15 12:29:17,663 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 [2021-12-15 12:29:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:29:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-15 12:29:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-15 12:29:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-15 12:29:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-15 12:29:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:29:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:29:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:29:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:29:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 12:29:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:29:17,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:29:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:29:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 12:29:17,695 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-15 12:29:17,800 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:29:17,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:29:17,964 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:29:17,995 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:284) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) 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) [2021-12-15 12:29:18,011 INFO L158 Benchmark]: Toolchain (without parser) took 717.53ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.4MB in the beginning and 31.7MB in the end (delta: -2.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-12-15 12:29:18,012 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory is still 34.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:29:18,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.13ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 47.5MB in the end (delta: -18.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-12-15 12:29:18,015 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.68ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 45.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:29:18,016 INFO L158 Benchmark]: Boogie Preprocessor took 20.31ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 44.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:29:18,017 INFO L158 Benchmark]: RCFGBuilder took 370.33ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 31.7MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:29:18,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory is still 34.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.13ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 47.5MB in the end (delta: -18.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.68ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 45.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.31ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 44.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.33ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 31.7MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 12:29:18,058 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable