./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:12:41,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:12:41,382 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:12:41,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:12:41,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:12:41,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:12:41,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:12:41,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:12:41,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:12:41,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:12:41,435 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:12:41,436 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:12:41,437 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:12:41,437 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:12:41,438 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:12:41,438 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:12:41,439 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:12:41,439 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:12:41,440 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:12:41,440 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:12:41,441 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:12:41,442 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:12:41,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:12:41,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:12:41,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:12:41,444 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:12:41,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:12:41,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:12:41,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:12:41,446 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:12:41,448 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:12:41,448 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:12:41,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:12:41,449 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:12:41,449 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:12:41,449 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:12:41,450 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:12:41,450 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:12:41,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:12:41,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:41,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:12:41,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:12:41,453 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:12:41,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:12:41,454 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:12:41,454 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:12:41,455 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2023-11-19 04:12:41,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:12:41,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:12:41,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:12:41,802 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:12:41,804 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:12:41,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-19 04:12:44,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:12:45,193 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:12:45,194 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2023-11-19 04:12:45,212 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/data/527449f95/7528e4ee759844fabe64dfe211bd5ddd/FLAG1dd8e1c73 [2023-11-19 04:12:45,226 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/data/527449f95/7528e4ee759844fabe64dfe211bd5ddd [2023-11-19 04:12:45,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:12:45,231 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:12:45,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:45,232 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:12:45,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:12:45,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:45,239 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79362f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45, skipping insertion in model container [2023-11-19 04:12:45,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:45,314 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:12:45,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:45,834 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:12:45,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:45,998 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:12:46,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45 WrapperNode [2023-11-19 04:12:46,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:46,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:12:46,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:12:46,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:12:46,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,100 INFO L138 Inliner]: procedures = 278, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 212 [2023-11-19 04:12:46,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:12:46,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:12:46,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:12:46,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:12:46,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:12:46,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:12:46,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:12:46,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:12:46,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (1/1) ... [2023-11-19 04:12:46,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:46,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:46,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:12:46,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a853638-a89a-497c-a65a-c37feb5e6cc2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:12:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:12:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:12:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-19 04:12:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-19 04:12:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:12:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:12:46,237 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-19 04:12:46,237 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-19 04:12:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:12:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 04:12:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:12:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:12:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:12:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:12:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:12:46,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:12:46,241 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:12:46,421 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:12:46,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:12:46,919 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:12:46,937 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:12:46,944 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-19 04:12:46,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:12:46 BoogieIcfgContainer [2023-11-19 04:12:46,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:12:46,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:12:46,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:12:46,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:12:46,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:12:45" (1/3) ... [2023-11-19 04:12:46,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5431b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:12:46, skipping insertion in model container [2023-11-19 04:12:46,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:45" (2/3) ... [2023-11-19 04:12:46,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5431b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:12:46, skipping insertion in model container [2023-11-19 04:12:46,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:12:46" (3/3) ... [2023-11-19 04:12:46,958 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2023-11-19 04:12:46,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:12:46,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-19 04:12:46,980 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:12:47,152 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 04:12:47,222 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:12:47,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 268 transitions, 556 flow [2023-11-19 04:12:47,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 268 transitions, 556 flow [2023-11-19 04:12:47,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 268 transitions, 556 flow [2023-11-19 04:12:47,498 INFO L124 PetriNetUnfolderBase]: 54/522 cut-off events. [2023-11-19 04:12:47,498 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-19 04:12:47,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 522 events. 54/522 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2501 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 262. Up to 8 conditions per place. [2023-11-19 04:12:47,540 INFO L119 LiptonReduction]: Number of co-enabled transitions 24404 [2023-11-19 04:13:46,229 INFO L134 LiptonReduction]: Checked pairs total: 70348 [2023-11-19 04:13:46,229 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-11-19 04:13:46,238 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 104 transitions, 228 flow