./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.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_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/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_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/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_445c331d-75fe-4132-b1c2-7578d3e70c54/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 c488feb98493d291286969cd9fdbd15fc14c729caece3fe94bd3c70430190936 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:52:34,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:52:35,108 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:52:35,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:52:35,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:52:35,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:52:35,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:52:35,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:52:35,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:52:35,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:52:35,168 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:52:35,169 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:52:35,169 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:52:35,170 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:52:35,171 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:52:35,171 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:52:35,172 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:52:35,173 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:52:35,173 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:52:35,174 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:52:35,175 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:52:35,175 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:52:35,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:52:35,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:52:35,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:52:35,178 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:52:35,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:52:35,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:52:35,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:52:35,181 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:52:35,181 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:52:35,182 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:52:35,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:52:35,183 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:52:35,183 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:52:35,184 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:52:35,184 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:52:35,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:52:35,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:52:35,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:52:35,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:52:35,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:52:35,188 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:52:35,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:52:35,189 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:52:35,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:52:35,190 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_445c331d-75fe-4132-b1c2-7578d3e70c54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c488feb98493d291286969cd9fdbd15fc14c729caece3fe94bd3c70430190936 [2023-11-19 04:52:35,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:52:35,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:52:35,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:52:35,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:52:35,546 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:52:35,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i [2023-11-19 04:52:39,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:52:39,732 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:52:39,737 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i [2023-11-19 04:52:39,768 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/data/9cf3a935f/d6bf0c2a394d48ddb7092b6ff38a8ecc/FLAG8a371648b [2023-11-19 04:52:39,788 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/data/9cf3a935f/d6bf0c2a394d48ddb7092b6ff38a8ecc [2023-11-19 04:52:39,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:52:39,800 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:52:39,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:52:39,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:52:39,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:52:39,811 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:52:39" (1/1) ... [2023-11-19 04:52:39,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303c326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:39, skipping insertion in model container [2023-11-19 04:52:39,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:52:39" (1/1) ... [2023-11-19 04:52:39,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:52:40,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:52:40,677 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:52:40,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:52:40,874 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:52:40,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40 WrapperNode [2023-11-19 04:52:40,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:52:40,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:52:40,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:52:40,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:52:40,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:40,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:40,956 INFO L138 Inliner]: procedures = 370, calls = 30, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 118 [2023-11-19 04:52:40,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:52:40,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:52:40,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:52:40,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:52:40,977 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:40,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:40,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:40,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:40,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:41,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:41,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:41,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:41,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:52:41,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:52:41,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:52:41,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:52:41,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (1/1) ... [2023-11-19 04:52:41,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:52:41,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:52:41,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:52:41,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_445c331d-75fe-4132-b1c2-7578d3e70c54/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:52:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:52:41,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:52:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:52:41,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:52:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:52:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 04:52:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:52:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:52:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:52:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 04:52:41,127 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 04:52:41,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:52:41,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:52:41,130 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 04:52:41,412 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:52:41,415 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:52:41,957 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:52:41,971 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:52:41,971 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:52:41,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:52:41 BoogieIcfgContainer [2023-11-19 04:52:41,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:52:41,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:52:41,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:52:41,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:52:41,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:52:39" (1/3) ... [2023-11-19 04:52:41,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20659535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:52:41, skipping insertion in model container [2023-11-19 04:52:41,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:52:40" (2/3) ... [2023-11-19 04:52:41,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20659535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:52:41, skipping insertion in model container [2023-11-19 04:52:41,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:52:41" (3/3) ... [2023-11-19 04:52:41,990 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_11-arraylist_nr-deref.i [2023-11-19 04:52:42,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:52:42,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-11-19 04:52:42,014 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:52:42,125 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:52:42,169 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:52:42,186 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 186 transitions, 376 flow [2023-11-19 04:52:42,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 186 transitions, 376 flow [2023-11-19 04:52:42,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 186 transitions, 376 flow [2023-11-19 04:52:42,299 INFO L124 PetriNetUnfolderBase]: 4/185 cut-off events. [2023-11-19 04:52:42,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 04:52:42,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 185 events. 4/185 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 198 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-11-19 04:52:42,313 INFO L119 LiptonReduction]: Number of co-enabled transitions 3192 [2023-11-19 04:53:20,161 WARN L293 SmtUtils]: Spent 15.70s on a formula simplification. DAG size of input: 211 DAG size of output: 195 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 04:53:26,433 WARN L293 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 04:53:39,482 WARN L293 SmtUtils]: Spent 13.04s on a formula simplification. DAG size of input: 211 DAG size of output: 197 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)