./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b --- 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 [2022-11-19 07:20:26,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:20:26,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:20:26,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:20:26,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:20:26,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:20:26,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:20:26,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:20:26,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:20:26,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:20:26,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:20:26,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:20:26,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:20:26,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:20:26,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:20:26,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:20:26,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:20:26,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:20:26,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:20:26,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:20:26,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:20:26,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:20:26,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:20:26,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:20:26,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:20:26,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:20:26,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:20:26,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:20:26,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:20:26,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:20:26,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:20:26,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:20:26,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:20:26,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:20:26,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:20:26,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:20:26,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:20:26,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:20:26,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:20:26,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:20:26,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:20:26,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:20:26,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:20:26,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:20:26,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:20:26,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:20:26,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:20:26,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:20:26,586 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:20:26,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:20:26,587 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:20:26,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:20:26,587 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:20:26,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:20:26,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:20:26,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:20:26,588 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:20:26,588 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:20:26,588 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:20:26,588 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:20:26,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:20:26,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:20:26,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:20:26,590 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:20:26,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:20:26,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:20:26,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:20:26,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:20:26,594 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:20:26,594 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:20:26,595 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:20:26,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:20:26,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:20:26,596 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:20:26,596 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:20:26,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:20:26,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:20:26,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:20:26,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:20:26,599 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:20:26,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:20:26,599 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:20:26,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:20:26,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:20:26,600 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_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9f6c449f4da806b6a3bb0aaf2c3c9171ea9b71d075f7e8b1d9543f656f7b8b [2022-11-19 07:20:26,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:20:26,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:20:26,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:20:26,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:20:26,957 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:20:26,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2022-11-19 07:20:27,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/data/effe1968b/fefb9defbd5e4be1ba693236fe6c594c/FLAGb86417349 [2022-11-19 07:20:27,610 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:20:27,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i [2022-11-19 07:20:27,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/data/effe1968b/fefb9defbd5e4be1ba693236fe6c594c/FLAGb86417349 [2022-11-19 07:20:27,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/data/effe1968b/fefb9defbd5e4be1ba693236fe6c594c [2022-11-19 07:20:27,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:20:27,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:20:27,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:20:27,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:20:27,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:20:27,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:20:27" (1/1) ... [2022-11-19 07:20:27,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f35e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:27, skipping insertion in model container [2022-11-19 07:20:27,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:20:27" (1/1) ... [2022-11-19 07:20:27,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:20:27,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:20:28,522 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_552e4402-746a-491f-aae6-460026328287/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2022-11-19 07:20:28,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:20:28,608 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:20:28,662 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_552e4402-746a-491f-aae6-460026328287/sv-benchmarks/c/goblint-regression/28-race_reach_85-list2_racefree.i[47038,47051] [2022-11-19 07:20:28,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:20:28,742 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:20:28,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28 WrapperNode [2022-11-19 07:20:28,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:20:28,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:20:28,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:20:28,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:20:28,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,854 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 339 [2022-11-19 07:20:28,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:20:28,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:20:28,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:20:28,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:20:28,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:20:28,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:20:28,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:20:28,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:20:28,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (1/1) ... [2022-11-19 07:20:28,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:20:29,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:20:29,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:20:29,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_552e4402-746a-491f-aae6-460026328287/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:20:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:20:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:20:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-19 07:20:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-19 07:20:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:20:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:20:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-19 07:20:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-19 07:20:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:20:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-19 07:20:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:20:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:20:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:20:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-11-19 07:20:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-11-19 07:20:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:20:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:20:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:20:29,073 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:20:29,291 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:20:29,293 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:20:30,070 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:20:30,087 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:20:30,087 INFO L300 CfgBuilder]: Removed 28 assume(true) statements. [2022-11-19 07:20:30,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:30 BoogieIcfgContainer [2022-11-19 07:20:30,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:20:30,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:20:30,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:20:30,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:20:30,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:20:27" (1/3) ... [2022-11-19 07:20:30,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474d5363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:30, skipping insertion in model container [2022-11-19 07:20:30,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:20:28" (2/3) ... [2022-11-19 07:20:30,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474d5363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:20:30, skipping insertion in model container [2022-11-19 07:20:30,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:20:30" (3/3) ... [2022-11-19 07:20:30,101 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2022-11-19 07:20:30,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:20:30,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-11-19 07:20:30,122 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:20:30,322 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-19 07:20:30,378 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:20:30,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 387 places, 425 transitions, 892 flow [2022-11-19 07:20:30,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 387 places, 425 transitions, 892 flow [2022-11-19 07:20:30,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 425 transitions, 892 flow [2022-11-19 07:20:30,864 INFO L130 PetriNetUnfolder]: 164/1302 cut-off events. [2022-11-19 07:20:30,864 INFO L131 PetriNetUnfolder]: For 36/65 co-relation queries the response was YES. [2022-11-19 07:20:30,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1363 conditions, 1302 events. 164/1302 cut-off events. For 36/65 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9015 event pairs, 0 based on Foata normal form. 0/936 useless extension candidates. Maximal degree in co-relation 673. Up to 16 conditions per place. [2022-11-19 07:20:30,977 INFO L119 LiptonReduction]: Number of co-enabled transitions 77264 [2022-11-19 07:21:19,924 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 248 DAG size of output: 246 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:21:22,385 INFO L134 LiptonReduction]: Checked pairs total: 202132 [2022-11-19 07:21:22,385 INFO L136 LiptonReduction]: Total number of compositions: 389 [2022-11-19 07:21:22,393 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 146 places, 175 transitions, 392 flow [2022-11-19 07:21:44,606 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 640915 states, 593881 states have (on average 4.834062716268074) internal successors, (2870858), 640914 states have internal predecessors, (2870858), 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) [2022-11-19 07:21:44,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:21:44,689 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@7f3ced68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:21:44,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2022-11-19 07:21:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 640915 states, 593881 states have (on average 4.834062716268074) internal successors, (2870858), 640914 states have internal predecessors, (2870858), 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) [2022-11-19 07:21:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 07:21:45,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:45,975 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 07:21:45,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2022-11-19 07:21:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1682, now seen corresponding path program 1 times [2022-11-19 07:21:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:21:45,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871690990] [2022-11-19 07:21:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:21:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:21:46,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:21:46,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871690990] [2022-11-19 07:21:46,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871690990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:21:46,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:21:46,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 07:21:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218136482] [2022-11-19 07:21:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:21:46,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:21:46,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:21:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:21:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:21:46,990 INFO L87 Difference]: Start difference. First operand has 640915 states, 593881 states have (on average 4.834062716268074) internal successors, (2870858), 640914 states have internal predecessors, (2870858), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-19 07:22:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:22:01,961 INFO L93 Difference]: Finished difference Result 640907 states and 2464940 transitions. [2022-11-19 07:22:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:22:01,971 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2022-11-19 07:22:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted.