./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:00:28,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:00:28,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:00:28,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:00:28,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:00:28,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:00:28,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:00:28,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:00:28,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:00:28,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:00:28,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:00:28,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:00:28,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:00:28,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:00:28,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:00:28,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:00:28,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:00:28,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:00:28,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:00:28,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:00:28,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:00:28,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:00:28,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:00:28,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:00:28,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:00:28,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:00:28,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:00:28,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:00:28,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:00:28,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:00:28,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:00:28,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:00:28,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:00:28,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:00:28,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:00:28,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:00:28,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:00:28,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:00:28,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:00:28,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:00:28,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:00:28,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:00:28,895 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:00:28,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:00:28,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:00:28,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:00:28,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:00:28,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:00:28,898 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:00:28,898 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:00:28,898 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:00:28,899 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:00:28,900 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:00:28,901 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:00:28,901 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:00:28,901 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:00:28,902 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:00:28,902 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:00:28,902 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:00:28,903 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:00:28,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:00:28,905 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:00:28,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:00:28,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:00:28,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:00:28,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:00:28,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:00:28,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:00:28,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:00:28,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:00:28,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:00:28,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:00:28,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:00:28,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:00:28,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:00:28,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:00:28,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:00:28,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:00:28,912 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:00:28,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:00:28,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:00:28,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:00:28,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:00:28,913 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2021-11-23 17:00:29,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:00:29,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:00:29,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:00:29,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:00:29,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:00:29,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2021-11-23 17:00:29,345 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data/064534235/0e4cd3a67db04b9980dd54d1807a2b16/FLAG7916b5282 [2021-11-23 17:00:29,937 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:00:29,938 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2021-11-23 17:00:29,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data/064534235/0e4cd3a67db04b9980dd54d1807a2b16/FLAG7916b5282 [2021-11-23 17:00:30,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data/064534235/0e4cd3a67db04b9980dd54d1807a2b16 [2021-11-23 17:00:30,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:00:30,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:00:30,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:00:30,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:00:30,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:00:30,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:30,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5202d362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30, skipping insertion in model container [2021-11-23 17:00:30,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:30,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:00:30,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:00:30,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i[30559,30572] [2021-11-23 17:00:30,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:00:30,779 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:00:30,851 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i[30559,30572] [2021-11-23 17:00:30,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:00:30,894 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:00:30,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30 WrapperNode [2021-11-23 17:00:30,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:00:30,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:00:30,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:00:30,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:00:30,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:30,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:30,988 INFO L137 Inliner]: procedures = 170, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 91 [2021-11-23 17:00:30,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:00:30,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:00:30,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:00:30,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:00:31,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:31,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:31,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:31,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:31,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:31,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:31,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:31,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:00:31,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:00:31,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:00:31,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:00:31,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:30" (1/1) ... [2021-11-23 17:00:31,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:00:31,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:00:31,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:00:31,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:00:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:00:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-11-23 17:00:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-11-23 17:00:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:00:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:00:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:00:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:00:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:00:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:00:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:00:31,140 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 17:00:31,309 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:00:31,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:00:31,542 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:00:31,586 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) [2021-11-23 17:00:31,591 INFO L158 Benchmark]: Toolchain (without parser) took 1372.64ms. Allocated memory is still 113.2MB. Free memory was 70.9MB in the beginning and 60.4MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:00:31,591 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 88.4MB in the beginning and 88.3MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:00:31,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 676.25ms. Allocated memory is still 113.2MB. Free memory was 70.7MB in the beginning and 77.8MB in the end (delta: -7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:00:31,593 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.78ms. Allocated memory is still 113.2MB. Free memory was 77.8MB in the beginning and 75.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:00:31,594 INFO L158 Benchmark]: Boogie Preprocessor took 50.35ms. Allocated memory is still 113.2MB. Free memory was 75.9MB in the beginning and 74.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:00:31,595 INFO L158 Benchmark]: RCFGBuilder took 547.05ms. Allocated memory is still 113.2MB. Free memory was 74.2MB in the beginning and 60.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 17:00:31,599 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 88.4MB in the beginning and 88.3MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 676.25ms. Allocated memory is still 113.2MB. Free memory was 70.7MB in the beginning and 77.8MB in the end (delta: -7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.78ms. Allocated memory is still 113.2MB. Free memory was 77.8MB in the beginning and 75.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.35ms. Allocated memory is still 113.2MB. Free memory was 75.9MB in the beginning and 74.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 547.05ms. Allocated memory is still 113.2MB. Free memory was 74.2MB in the beginning and 60.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. 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. [2021-11-23 17:00:31,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:00:34,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:00:34,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:00:34,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:00:34,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:00:34,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:00:34,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:00:34,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:00:34,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:00:34,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:00:34,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:00:34,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:00:34,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:00:34,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:00:34,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:00:34,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:00:34,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:00:34,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:00:34,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:00:34,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:00:34,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:00:34,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:00:34,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:00:34,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:00:34,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:00:34,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:00:34,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:00:34,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:00:34,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:00:34,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:00:34,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:00:34,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:00:34,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:00:34,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:00:34,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:00:34,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:00:34,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:00:34,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:00:34,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:00:34,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:00:34,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:00:34,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:00:34,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:00:34,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:00:34,582 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:00:34,582 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:00:34,583 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:00:34,583 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:00:34,584 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:00:34,584 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:00:34,584 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:00:34,584 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:00:34,586 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:00:34,586 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:00:34,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:00:34,588 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:00:34,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:00:34,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:00:34,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:00:34,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:00:34,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:00:34,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:00:34,590 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:00:34,590 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:00:34,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:00:34,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:00:34,591 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:00:34,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:00:34,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:00:34,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:00:34,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:00:34,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:00:34,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:00:34,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:00:34,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:00:34,593 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:00:34,593 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:00:34,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:00:34,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:00:34,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:00:34,595 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2021-11-23 17:00:35,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:00:35,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:00:35,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:00:35,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:00:35,050 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:00:35,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2021-11-23 17:00:35,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data/7e3bb412c/11e3e7c2cc0344f3988120922767fbc6/FLAGc5a3179f4 [2021-11-23 17:00:35,880 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:00:35,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2021-11-23 17:00:35,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data/7e3bb412c/11e3e7c2cc0344f3988120922767fbc6/FLAGc5a3179f4 [2021-11-23 17:00:36,083 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/data/7e3bb412c/11e3e7c2cc0344f3988120922767fbc6 [2021-11-23 17:00:36,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:00:36,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:00:36,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:00:36,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:00:36,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:00:36,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3c15d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36, skipping insertion in model container [2021-11-23 17:00:36,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:00:36,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:00:36,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i[30559,30572] [2021-11-23 17:00:36,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:00:36,673 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:00:36,713 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i[30559,30572] [2021-11-23 17:00:36,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:00:36,764 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:00:36,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36 WrapperNode [2021-11-23 17:00:36,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:00:36,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:00:36,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:00:36,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:00:36,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,826 INFO L137 Inliner]: procedures = 174, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 89 [2021-11-23 17:00:36,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:00:36,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:00:36,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:00:36,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:00:36,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:00:36,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:00:36,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:00:36,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:00:36,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:00:36" (1/1) ... [2021-11-23 17:00:36,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:00:36,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:00:36,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:00:36,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:00:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:00:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-11-23 17:00:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-11-23 17:00:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:00:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:00:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:00:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:00:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:00:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 17:00:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:00:36,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:00:36,979 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 17:00:37,223 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:00:37,225 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:00:37,513 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:00:37,576 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) [2021-11-23 17:00:37,584 INFO L158 Benchmark]: Toolchain (without parser) took 1491.45ms. Allocated memory is still 65.0MB. Free memory was 43.3MB in the beginning and 39.3MB in the end (delta: 4.0MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-11-23 17:00:37,585 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:00:37,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 675.93ms. Allocated memory is still 65.0MB. Free memory was 43.2MB in the beginning and 37.9MB in the end (delta: 5.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:00:37,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.24ms. Allocated memory is still 65.0MB. Free memory was 37.9MB in the beginning and 35.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:00:37,589 INFO L158 Benchmark]: Boogie Preprocessor took 37.82ms. Allocated memory is still 65.0MB. Free memory was 35.8MB in the beginning and 34.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:00:37,590 INFO L158 Benchmark]: RCFGBuilder took 711.61ms. Allocated memory is still 65.0MB. Free memory was 34.3MB in the beginning and 39.3MB in the end (delta: -5.0MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-11-23 17:00:37,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 675.93ms. Allocated memory is still 65.0MB. Free memory was 43.2MB in the beginning and 37.9MB in the end (delta: 5.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.24ms. Allocated memory is still 65.0MB. Free memory was 37.9MB in the beginning and 35.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.82ms. Allocated memory is still 65.0MB. Free memory was 35.8MB in the beginning and 34.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 711.61ms. Allocated memory is still 65.0MB. Free memory was 34.3MB in the beginning and 39.3MB in the end (delta: -5.0MB). Peak memory consumption was 12.4MB. 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. [2021-11-23 17:00:37,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eca91b4-2ba7-48b9-87cd-b797b730c240/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable