./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:57:43,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:57:43,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:57:43,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:57:43,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:57:43,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:57:43,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:57:43,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:57:43,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:57:43,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:57:43,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:57:43,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:57:43,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:57:43,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:57:43,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:57:43,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:57:43,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:57:43,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:57:43,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:57:43,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:57:43,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:57:43,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:57:43,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:57:43,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:57:43,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:57:43,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:57:43,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:57:43,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:57:43,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:57:43,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:57:43,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:57:43,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:57:43,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:57:43,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:57:43,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:57:43,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:57:43,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:57:43,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:57:43,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:57:43,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:57:43,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:57:43,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:57:43,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:57:43,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:57:43,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:57:43,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:57:43,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:57:43,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:57:43,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:57:43,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:57:43,923 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:57:43,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:57:43,925 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:57:43,925 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:57:43,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:57:43,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:57:43,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:57:43,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:57:43,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:57:43,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:57:43,927 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:57:43,927 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:57:43,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:57:43,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:57:43,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:57:43,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:57:43,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:57:43,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:57:43,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:57:43,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:57:43,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:57:43,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:57:43,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:57:43,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:57:43,932 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:57:43,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:57:43,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:57:43,933 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2022-11-18 20:57:44,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:57:44,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:57:44,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:57:44,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:57:44,297 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:57:44,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-18 20:57:44,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/data/ca55c1b51/e8f79d0c6a99477cb68e7e2d53e82a1c/FLAGa234f5ec4 [2022-11-18 20:57:45,027 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:57:45,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-18 20:57:45,049 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/data/ca55c1b51/e8f79d0c6a99477cb68e7e2d53e82a1c/FLAGa234f5ec4 [2022-11-18 20:57:45,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/data/ca55c1b51/e8f79d0c6a99477cb68e7e2d53e82a1c [2022-11-18 20:57:45,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:57:45,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:57:45,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:57:45,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:57:45,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:57:45,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:57:45" (1/1) ... [2022-11-18 20:57:45,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d05b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:45, skipping insertion in model container [2022-11-18 20:57:45,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:57:45" (1/1) ... [2022-11-18 20:57:45,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:57:45,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:57:45,525 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 20:57:45,862 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-18 20:57:45,868 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-18 20:57:45,870 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-18 20:57:46,010 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-18 20:57:46,011 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-18 20:57:46,015 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-18 20:57:46,017 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-18 20:57:46,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:57:46,041 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:57:46,054 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 20:57:46,094 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-18 20:57:46,095 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-18 20:57:46,096 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-18 20:57:46,105 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-18 20:57:46,106 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-18 20:57:46,108 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-18 20:57:46,110 WARN L234 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_96f2c743-d4ef-4930-81f5-92388827b2c0/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-18 20:57:46,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:57:46,177 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:57:46,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46 WrapperNode [2022-11-18 20:57:46,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:57:46,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:57:46,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:57:46,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:57:46,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,315 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 349 [2022-11-18 20:57:46,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:57:46,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:57:46,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:57:46,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:57:46,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,426 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:57:46,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:57:46,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:57:46,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:57:46,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (1/1) ... [2022-11-18 20:57:46,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:57:46,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:46,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:57:46,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96f2c743-d4ef-4930-81f5-92388827b2c0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:57:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-11-18 20:57:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-11-18 20:57:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-11-18 20:57:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-11-18 20:57:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:57:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:57:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:57:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:57:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:57:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:57:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:57:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:57:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:57:46,526 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:57:46,721 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:57:46,723 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:57:47,529 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:57:47,540 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:57:47,540 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:57:47,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:47 BoogieIcfgContainer [2022-11-18 20:57:47,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:57:47,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:57:47,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:57:47,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:57:47,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:57:45" (1/3) ... [2022-11-18 20:57:47,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6013561b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:57:47, skipping insertion in model container [2022-11-18 20:57:47,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:46" (2/3) ... [2022-11-18 20:57:47,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6013561b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:57:47, skipping insertion in model container [2022-11-18 20:57:47,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:47" (3/3) ... [2022-11-18 20:57:47,552 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-11-18 20:57:47,561 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:57:47,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:57:47,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-18 20:57:47,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:57:47,830 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:57:47,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 401 transitions, 818 flow [2022-11-18 20:57:48,080 INFO L130 PetriNetUnfolder]: 17/399 cut-off events. [2022-11-18 20:57:48,080 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:57:48,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 399 events. 17/399 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 908 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 327. Up to 2 conditions per place. [2022-11-18 20:57:48,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 391 places, 401 transitions, 818 flow [2022-11-18 20:57:48,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 388 transitions, 785 flow [2022-11-18 20:57:48,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:57:48,152 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@37298b0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:57:48,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-18 20:57:48,161 INFO L130 PetriNetUnfolder]: 0/39 cut-off events. [2022-11-18 20:57:48,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:57:48,161 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:57:48,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:48,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-11-18 20:57:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1588233868, now seen corresponding path program 1 times [2022-11-18 20:57:48,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:48,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683934589] [2022-11-18 20:57:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:48,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:49,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:49,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683934589] [2022-11-18 20:57:49,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683934589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:49,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:49,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:57:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154501866] [2022-11-18 20:57:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:49,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:57:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:57:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:57:49,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 401 [2022-11-18 20:57:49,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 388 transitions, 785 flow. Second operand has 6 states, 6 states have (on average 226.5) internal successors, (1359), 6 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:57:49,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:57:49,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 401 [2022-11-18 20:57:49,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand