./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/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_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist-deref.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/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_d43819a9-f244-489a-a5af-af4f0eb257a6/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 531fb1e21d8f5a9631a3764359a014fcdd0042558e9afceaf1b553fa03cda562 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:17:04,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:17:05,142 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:17:05,154 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:17:05,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:17:05,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:17:05,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:17:05,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:17:05,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:17:05,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:17:05,214 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:17:05,215 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:17:05,215 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:17:05,218 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:17:05,218 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:17:05,219 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:17:05,221 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:17:05,222 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:17:05,223 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:17:05,223 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:17:05,224 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:17:05,225 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:17:05,225 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:17:05,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:17:05,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:17:05,228 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:17:05,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:17:05,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:17:05,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:17:05,230 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:17:05,232 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:17:05,232 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:17:05,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:17:05,233 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:17:05,233 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:17:05,233 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:17:05,234 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:17:05,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:17:05,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:17:05,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:17:05,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:17:05,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:17:05,237 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:17:05,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:17:05,238 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:17:05,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:17:05,238 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_d43819a9-f244-489a-a5af-af4f0eb257a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 531fb1e21d8f5a9631a3764359a014fcdd0042558e9afceaf1b553fa03cda562 [2023-11-19 04:17:05,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:17:05,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:17:05,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:17:05,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:17:05,684 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:17:05,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist-deref.i [2023-11-19 04:17:09,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:17:09,822 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:17:09,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/sv-benchmarks/c/goblint-regression/09-regions_09-arraylist-deref.i [2023-11-19 04:17:09,856 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/data/11cbb7c11/8528da410b4d42809c5e27311f8c5c31/FLAG82e8aff33 [2023-11-19 04:17:09,875 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/data/11cbb7c11/8528da410b4d42809c5e27311f8c5c31 [2023-11-19 04:17:09,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:17:09,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:17:09,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:17:09,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:17:09,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:17:09,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:17:09" (1/1) ... [2023-11-19 04:17:09,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab3f07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:09, skipping insertion in model container [2023-11-19 04:17:09,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:17:09" (1/1) ... [2023-11-19 04:17:09,966 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:17:10,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:17:10,771 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:17:10,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:17:10,985 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:17:10,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10 WrapperNode [2023-11-19 04:17:10,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:17:10,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:17:10,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:17:10,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:17:10,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,093 INFO L138 Inliner]: procedures = 371, calls = 35, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 112 [2023-11-19 04:17:11,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:17:11,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:17:11,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:17:11,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:17:11,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,173 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:17:11,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:17:11,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:17:11,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:17:11,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (1/1) ... [2023-11-19 04:17:11,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:17:11,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:17:11,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:17:11,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43819a9-f244-489a-a5af-af4f0eb257a6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:17:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:17:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:17:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:17:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:17:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:17:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 04:17:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:17:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:17:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:17:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 04:17:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 04:17:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:17:11,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:17:11,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:17:11,295 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 04:17:11,517 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:17:11,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:17:12,095 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:17:12,123 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:17:12,123 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:17:12,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:17:12 BoogieIcfgContainer [2023-11-19 04:17:12,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:17:12,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:17:12,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:17:12,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:17:12,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:17:09" (1/3) ... [2023-11-19 04:17:12,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c99e689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:17:12, skipping insertion in model container [2023-11-19 04:17:12,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:10" (2/3) ... [2023-11-19 04:17:12,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c99e689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:17:12, skipping insertion in model container [2023-11-19 04:17:12,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:17:12" (3/3) ... [2023-11-19 04:17:12,152 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_09-arraylist-deref.i [2023-11-19 04:17:12,173 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:17:12,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-11-19 04:17:12,173 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:17:12,330 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:17:12,375 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:17:12,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 181 transitions, 366 flow [2023-11-19 04:17:12,396 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 181 transitions, 366 flow [2023-11-19 04:17:12,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 181 transitions, 366 flow [2023-11-19 04:17:12,532 INFO L124 PetriNetUnfolderBase]: 2/180 cut-off events. [2023-11-19 04:17:12,532 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 04:17:12,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 180 events. 2/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 189 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 04:17:12,544 INFO L119 LiptonReduction]: Number of co-enabled transitions 3192 [2023-11-19 04:17:43,851 WARN L293 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 188 DAG size of output: 176 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 04:17:52,244 WARN L293 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 188 DAG size of output: 178 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-19 04:18:06,602 WARN L293 SmtUtils]: Spent 11.57s on a formula simplification. DAG size of input: 207 DAG size of output: 197 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)