./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr-deref.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp --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 12bbf3623faa1d8cb0ae406b9406d293839854c20d2fb62622ec841c419248fb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:00:44,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:00:44,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:00:44,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:00:44,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:00:44,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:00:44,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:00:44,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:00:44,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:00:44,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:00:44,265 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:00:44,266 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:00:44,267 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:00:44,269 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:00:44,269 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:00:44,269 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:00:44,270 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:00:44,270 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:00:44,271 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:00:44,271 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:00:44,272 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:00:44,272 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:00:44,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:00:44,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:00:44,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:00:44,275 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:00:44,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:00:44,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:00:44,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:00:44,277 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:00:44,279 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:00:44,279 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:00:44,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:00:44,279 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:00:44,280 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:00:44,280 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:00:44,280 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:00:44,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:00:44,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:00:44,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:00:44,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:00:44,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:00:44,286 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:00:44,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:00:44,287 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:00:44,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:00:44,287 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_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12bbf3623faa1d8cb0ae406b9406d293839854c20d2fb62622ec841c419248fb [2023-11-06 21:00:44,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:00:44,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:00:44,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:00:44,607 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:00:44,609 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:00:44,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr-deref.i [2023-11-06 21:00:47,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:00:48,062 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:00:48,063 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr-deref.i [2023-11-06 21:00:48,089 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/data/37a584c46/e5d68ec65f28463bb6666e0d6e27d88b/FLAG8beb25312 [2023-11-06 21:00:48,114 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/data/37a584c46/e5d68ec65f28463bb6666e0d6e27d88b [2023-11-06 21:00:48,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:00:48,124 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:00:48,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:00:48,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:00:48,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:00:48,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:00:48" (1/1) ... [2023-11-06 21:00:48,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37be7ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:48, skipping insertion in model container [2023-11-06 21:00:48,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:00:48" (1/1) ... [2023-11-06 21:00:48,215 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:00:48,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:00:48,998 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:00:49,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:00:49,172 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:00:49,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49 WrapperNode [2023-11-06 21:00:49,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:00:49,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:00:49,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:00:49,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:00:49,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,257 INFO L138 Inliner]: procedures = 370, calls = 29, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 116 [2023-11-06 21:00:49,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:00:49,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:00:49,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:00:49,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:00:49,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:00:49,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:00:49,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:00:49,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:00:49,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (1/1) ... [2023-11-06 21:00:49,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:00:49,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:00:49,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:00:49,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdc14485-cad9-4a79-934a-33a6b2f886fc/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:00:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:00:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:00:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:00:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:00:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:00:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:00:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:00:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:00:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:00:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 21:00:49,385 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 21:00:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:00:49,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:00:49,386 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:00:49,552 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:00:49,554 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:00:50,045 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:00:50,054 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:00:50,054 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:00:50,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:00:50 BoogieIcfgContainer [2023-11-06 21:00:50,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:00:50,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:00:50,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:00:50,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:00:50,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:00:48" (1/3) ... [2023-11-06 21:00:50,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40122acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:00:50, skipping insertion in model container [2023-11-06 21:00:50,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:00:49" (2/3) ... [2023-11-06 21:00:50,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40122acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:00:50, skipping insertion in model container [2023-11-06 21:00:50,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:00:50" (3/3) ... [2023-11-06 21:00:50,066 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr-deref.i [2023-11-06 21:00:50,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:00:50,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-11-06 21:00:50,088 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:00:50,188 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:00:50,234 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:00:50,257 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 184 transitions, 372 flow [2023-11-06 21:00:50,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 184 transitions, 372 flow [2023-11-06 21:00:50,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 184 transitions, 372 flow [2023-11-06 21:00:50,365 INFO L124 PetriNetUnfolderBase]: 4/183 cut-off events. [2023-11-06 21:00:50,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:00:50,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 183 events. 4/183 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 196 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2023-11-06 21:00:50,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 3192 [2023-11-06 21:01:14,037 WARN L293 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 181 DAG size of output: 165 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:01:20,772 WARN L293 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 185 DAG size of output: 169 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)