./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/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_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/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_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/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 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --- 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 07:42:53,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:42:53,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:42:53,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:42:53,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:42:53,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:42:53,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:42:53,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:42:53,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:42:53,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:42:53,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:42:53,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:42:53,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:42:53,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:42:53,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:42:53,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:42:53,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:42:53,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:42:53,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:42:53,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:42:53,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:42:53,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:42:53,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:42:53,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:42:53,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:42:53,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:42:53,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:42:53,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:42:53,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:42:53,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:42:53,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:42:53,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:42:53,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:42:53,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:42:53,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:42:53,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:42:53,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:42:53,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:42:53,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:42:53,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:42:53,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:42:53,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:42:53,793 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:42:53,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:42:53,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:42:53,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:42:53,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:42:53,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:42:53,796 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:42:53,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:42:53,797 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:42:53,797 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:42:53,798 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:42:53,799 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:42:53,799 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:42:53,799 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:42:53,800 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:42:53,800 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:42:53,800 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:42:53,801 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:42:53,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:42:53,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:42:53,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:42:53,804 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:42:53,804 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:42:53,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:42:53,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:42:53,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:42:53,806 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:42:53,806 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:42:53,806 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:42:53,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:42:53,807 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:42:53,807 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:42:53,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:42:53,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:42:53,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:42:53,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:42:53,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:42:53,809 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:42:53,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:42:53,810 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:42:53,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:42:53,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:42:53,811 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_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d [2022-11-19 07:42:54,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:42:54,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:42:54,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:42:54,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:42:54,218 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:42:54,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2022-11-19 07:42:54,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/data/5f4bdf06e/2f308a6b2fee4762b6a51b842a8a1832/FLAG9277560ed [2022-11-19 07:42:54,902 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:42:54,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2022-11-19 07:42:54,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/data/5f4bdf06e/2f308a6b2fee4762b6a51b842a8a1832/FLAG9277560ed [2022-11-19 07:42:55,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/data/5f4bdf06e/2f308a6b2fee4762b6a51b842a8a1832 [2022-11-19 07:42:55,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:42:55,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:42:55,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:42:55,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:42:55,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:42:55,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:55" (1/1) ... [2022-11-19 07:42:55,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658f0ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:55, skipping insertion in model container [2022-11-19 07:42:55,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:55" (1/1) ... [2022-11-19 07:42:55,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:42:55,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:42:55,916 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_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2022-11-19 07:42:55,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:42:56,013 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:42:56,070 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_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2022-11-19 07:42:56,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:42:56,154 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:42:56,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56 WrapperNode [2022-11-19 07:42:56,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:42:56,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:42:56,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:42:56,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:42:56,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,246 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 339 [2022-11-19 07:42:56,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:42:56,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:42:56,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:42:56,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:42:56,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,314 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:42:56,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:42:56,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:42:56,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:42:56,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (1/1) ... [2022-11-19 07:42:56,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:42:56,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:42:56,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:42:56,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1905ab7-96f7-4f3a-af19-9c6d8d757f82/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:42:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:42:56,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:42:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-11-19 07:42:56,424 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-11-19 07:42:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:42:56,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:42:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-11-19 07:42:56,425 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-11-19 07:42:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:42:56,425 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-19 07:42:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:42:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:42:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:42:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-11-19 07:42:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-11-19 07:42:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:42:56,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:42:56,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:42:56,429 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 07:42:56,671 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:42:56,673 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:42:57,593 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:42:57,605 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:42:57,611 INFO L300 CfgBuilder]: Removed 28 assume(true) statements. [2022-11-19 07:42:57,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:57 BoogieIcfgContainer [2022-11-19 07:42:57,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:42:57,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:42:57,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:42:57,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:42:57,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:55" (1/3) ... [2022-11-19 07:42:57,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720c7324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:57, skipping insertion in model container [2022-11-19 07:42:57,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:56" (2/3) ... [2022-11-19 07:42:57,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720c7324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:57, skipping insertion in model container [2022-11-19 07:42:57,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:57" (3/3) ... [2022-11-19 07:42:57,624 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2022-11-19 07:42:57,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:42:57,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-11-19 07:42:57,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:42:57,814 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-11-19 07:42:57,855 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:42:57,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 387 places, 425 transitions, 892 flow [2022-11-19 07:42:57,873 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 387 places, 425 transitions, 892 flow [2022-11-19 07:42:57,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 425 transitions, 892 flow [2022-11-19 07:42:58,368 INFO L130 PetriNetUnfolder]: 164/1302 cut-off events. [2022-11-19 07:42:58,369 INFO L131 PetriNetUnfolder]: For 36/65 co-relation queries the response was YES. [2022-11-19 07:42:58,399 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 07:42:58,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 77264 [2022-11-19 07:43:44,544 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 245 DAG size of output: 243 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:43:54,698 WARN L233 SmtUtils]: Spent 6.99s 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 07:43:57,956 INFO L134 LiptonReduction]: Checked pairs total: 202132 [2022-11-19 07:43:57,956 INFO L136 LiptonReduction]: Total number of compositions: 389 [2022-11-19 07:43:57,965 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 146 places, 175 transitions, 392 flow [2022-11-19 07:44:22,810 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 07:44:22,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:44:22,833 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;@44ff7e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:44:22,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2022-11-19 07:44:23,795 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 07:44:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 07:44:23,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:44:23,801 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 07:44:23,802 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 07:44:23,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:44:23,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1682, now seen corresponding path program 1 times [2022-11-19 07:44:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:44:23,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484097238] [2022-11-19 07:44:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:23,968 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 07:44:23,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:44:23,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484097238] [2022-11-19 07:44:23,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484097238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:44:23,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:44:23,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 07:44:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909370052] [2022-11-19 07:44:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:44:23,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:44:23,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:44:24,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:44:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:44:25,306 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 07:44:39,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:44:39,841 INFO L93 Difference]: Finished difference Result 640907 states and 2464940 transitions. [2022-11-19 07:44:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:44:39,844 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 07:44:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted.