./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-queue-add-2.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-queue-add-2.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 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:29:16,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:29:16,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:29:16,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:29:16,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:29:16,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:29:16,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:29:16,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:29:16,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:29:16,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:29:16,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:29:16,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:29:16,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:29:16,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:29:16,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:29:16,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:29:16,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:29:16,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:29:16,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:29:16,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:29:16,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:29:16,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:29:16,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:29:16,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:29:16,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:29:16,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:29:16,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:29:16,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:29:16,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:29:16,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:29:16,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:29:16,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:29:16,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:29:16,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:29:16,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:29:16,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:29:16,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:29:16,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:29:16,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:29:16,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:29:16,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:29:16,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 12:29:16,607 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:29:16,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:29:16,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:29:16,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:29:16,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:29:16,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:29:16,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:29:16,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:29:16,609 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:29:16,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:29:16,610 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:29:16,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 12:29:16,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:29:16,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:29:16,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:29:16,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:29:16,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:29:16,611 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:29:16,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:29:16,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:29:16,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:29:16,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:29:16,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:29:16,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:29:16,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:29:16,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:29:16,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:29:16,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:29:16,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 12:29:16,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 12:29:16,613 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:29:16,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:29:16,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:29:16,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:29:16,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df [2021-12-15 12:29:16,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:29:16,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:29:16,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:29:16,834 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:29:16,834 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:29:16,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-12-15 12:29:16,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41fae2692/d551e42758d147388e0885a16667e9ab/FLAGc6c3e13fd [2021-12-15 12:29:17,295 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:29:17,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-12-15 12:29:17,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41fae2692/d551e42758d147388e0885a16667e9ab/FLAGc6c3e13fd [2021-12-15 12:29:17,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41fae2692/d551e42758d147388e0885a16667e9ab [2021-12-15 12:29:17,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:29:17,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:29:17,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:29:17,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:29:17,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:29:17,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7bd2dd 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 12:29:17,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:29:17" (1/1) ... [2021-12-15 12:29:17,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:29:17,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:29:17,845 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-queue-add-2.wvr.c[2696,2709] [2021-12-15 12:29:17,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:29:17,864 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:29:17,884 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-queue-add-2.wvr.c[2696,2709] [2021-12-15 12:29:17,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:29:17,899 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:29:17,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:17 WrapperNode [2021-12-15 12:29:17,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:29:17,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:29:17,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:29:17,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:29:17,905 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 12:29:17,920 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 12:29:17,935 INFO L137 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 154 [2021-12-15 12:29:17,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:29:17,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:29:17,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:29:17,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:29:17,942 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 12:29:17,942 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 12:29:17,944 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 12:29:17,944 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 12:29:17,952 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 12:29:17,955 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 12:29:17,957 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 12:29:17,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:29:17,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:29:17,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:29:17,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:29:17,966 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 12:29:17,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:29:17,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:29:18,016 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 12:29:18,021 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 12:29:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:29:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-15 12:29:18,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-15 12:29:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-15 12:29:18,047 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-15 12:29:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 12:29:18,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:29:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 12:29:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:29:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:29:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 12:29:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:29:18,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:29:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 12:29:18,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:29:18,049 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 12:29:18,105 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:29:18,106 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:29:18,351 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:29:18,391 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 12:29:18,395 INFO L158 Benchmark]: Toolchain (without parser) took 714.87ms. Allocated memory is still 92.3MB. Free memory was 53.7MB in the beginning and 46.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-12-15 12:29:18,396 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:29:18,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.81ms. Allocated memory is still 92.3MB. Free memory was 53.5MB in the beginning and 67.2MB in the end (delta: -13.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 12:29:18,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.68ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 65.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:29:18,397 INFO L158 Benchmark]: Boogie Preprocessor took 27.75ms. Allocated memory is still 92.3MB. Free memory was 65.1MB in the beginning and 63.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:29:18,398 INFO L158 Benchmark]: RCFGBuilder took 429.10ms. Allocated memory is still 92.3MB. Free memory was 63.6MB in the beginning and 46.4MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 12:29:18,399 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 92.3MB. Free memory is still 70.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.81ms. Allocated memory is still 92.3MB. Free memory was 53.5MB in the beginning and 67.2MB in the end (delta: -13.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.68ms. Allocated memory is still 92.3MB. Free memory was 67.0MB in the beginning and 65.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.75ms. Allocated memory is still 92.3MB. Free memory was 65.1MB in the beginning and 63.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 429.10ms. Allocated memory is still 92.3MB. Free memory was 63.6MB in the beginning and 46.4MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. 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 12:29:18,424 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-queue-add-2.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 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 12:29:20,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 12:29:20,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 12:29:20,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 12:29:20,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 12:29:20,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 12:29:20,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 12:29:20,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 12:29:20,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 12:29:20,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 12:29:20,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 12:29:20,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 12:29:20,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 12:29:20,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 12:29:20,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 12:29:20,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 12:29:20,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 12:29:20,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 12:29:20,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 12:29:20,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 12:29:20,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 12:29:20,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 12:29:20,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 12:29:20,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 12:29:20,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 12:29:20,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 12:29:20,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 12:29:20,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 12:29:20,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 12:29:20,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 12:29:20,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 12:29:20,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 12:29:20,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 12:29:20,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 12:29:20,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 12:29:20,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 12:29:20,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 12:29:20,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 12:29:20,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 12:29:20,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 12:29:20,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 12:29:20,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 12:29:20,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 12:29:20,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 12:29:20,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 12:29:20,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 12:29:20,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 12:29:20,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 12:29:20,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 12:29:20,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 12:29:20,199 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 12:29:20,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 12:29:20,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 12:29:20,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 12:29:20,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 12:29:20,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 12:29:20,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 12:29:20,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 12:29:20,200 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 12:29:20,201 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 12:29:20,201 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 12:29:20,201 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 12:29:20,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 12:29:20,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 12:29:20,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 12:29:20,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 12:29:20,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 12:29:20,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 12:29:20,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:29:20,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 12:29:20,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 12:29:20,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 12:29:20,203 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 12:29:20,203 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 12:29:20,203 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 12:29:20,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 12:29:20,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 12:29:20,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 12:29:20,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 12:29:20,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df [2021-12-15 12:29:20,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 12:29:20,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 12:29:20,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 12:29:20,475 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 12:29:20,476 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 12:29:20,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-12-15 12:29:20,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73747cb4/0c1a01064e0a4dbfb1afc3f9136ec438/FLAGac61d26d5 [2021-12-15 12:29:20,933 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 12:29:20,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2021-12-15 12:29:20,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73747cb4/0c1a01064e0a4dbfb1afc3f9136ec438/FLAGac61d26d5 [2021-12-15 12:29:20,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73747cb4/0c1a01064e0a4dbfb1afc3f9136ec438 [2021-12-15 12:29:20,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 12:29:20,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 12:29:20,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 12:29:20,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 12:29:20,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 12:29:20,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:29:20" (1/1) ... [2021-12-15 12:29:20,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acdcd83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:20, skipping insertion in model container [2021-12-15 12:29:20,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:29:20" (1/1) ... [2021-12-15 12:29:20,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 12:29:20,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:29:21,167 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-queue-add-2.wvr.c[2696,2709] [2021-12-15 12:29:21,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:29:21,194 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 12:29:21,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 12:29:21,222 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-queue-add-2.wvr.c[2696,2709] [2021-12-15 12:29:21,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:29:21,231 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 12:29:21,261 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-queue-add-2.wvr.c[2696,2709] [2021-12-15 12:29:21,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 12:29:21,280 INFO L208 MainTranslator]: Completed translation [2021-12-15 12:29:21,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21 WrapperNode [2021-12-15 12:29:21,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 12:29:21,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 12:29:21,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 12:29:21,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 12:29:21,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,328 INFO L137 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 150 [2021-12-15 12:29:21,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 12:29:21,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 12:29:21,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 12:29:21,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 12:29:21,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 12:29:21,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 12:29:21,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 12:29:21,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 12:29:21,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:29:21" (1/1) ... [2021-12-15 12:29:21,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 12:29:21,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 12:29:21,392 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 12:29:21,405 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 12:29:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 12:29:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 12:29:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 12:29:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 12:29:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-15 12:29:21,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-15 12:29:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-15 12:29:21,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-15 12:29:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-15 12:29:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-15 12:29:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 12:29:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 12:29:21,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 12:29:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 12:29:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 12:29:21,425 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 12:29:21,483 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 12:29:21,484 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 12:29:21,797 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 12:29:21,860 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 12:29:21,868 INFO L158 Benchmark]: Toolchain (without parser) took 913.07ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.6MB in the beginning and 38.6MB in the end (delta: -7.0MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-12-15 12:29:21,869 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 12:29:21,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.61ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 46.8MB in the end (delta: -15.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-12-15 12:29:21,870 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.65ms. Allocated memory is still 67.1MB. Free memory was 46.8MB in the beginning and 44.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:29:21,871 INFO L158 Benchmark]: Boogie Preprocessor took 38.28ms. Allocated memory is still 67.1MB. Free memory was 44.8MB in the beginning and 43.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 12:29:21,872 INFO L158 Benchmark]: RCFGBuilder took 497.47ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 38.9MB in the end (delta: 4.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 12:29:21,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.61ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 46.8MB in the end (delta: -15.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.65ms. Allocated memory is still 67.1MB. Free memory was 46.8MB in the beginning and 44.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.28ms. Allocated memory is still 67.1MB. Free memory was 44.8MB in the beginning and 43.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.47ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 38.9MB in the end (delta: 4.3MB). 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 12:29:21,912 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