./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr-deref.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e8cd6f4fedd4ae62debc23b5e2621fa19163a924ac1cc7b32aeb6e38c2fa5ce1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:18:01,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:18:01,189 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:18:01,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:18:01,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:18:01,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:18:01,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:18:01,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:18:01,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:18:01,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:18:01,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:18:01,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:18:01,250 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:18:01,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:18:01,252 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:18:01,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:18:01,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:18:01,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:18:01,254 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:18:01,255 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:18:01,255 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:18:01,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:18:01,258 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:18:01,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:18:01,259 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:18:01,259 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:18:01,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:18:01,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:18:01,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:18:01,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:01,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:18:01,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:18:01,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:18:01,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:18:01,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:18:01,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:18:01,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:18:01,266 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:18:01,266 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8cd6f4fedd4ae62debc23b5e2621fa19163a924ac1cc7b32aeb6e38c2fa5ce1 [2023-11-06 22:18:01,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:18:01,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:18:01,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:18:01,584 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:18:01,585 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:18:01,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr-deref.i [2023-11-06 22:18:04,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:05,065 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:05,066 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/sv-benchmarks/c/goblint-regression/09-regions_13-arraycollapse_nr-deref.i [2023-11-06 22:18:05,089 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/data/1566f9f53/5ce93420a72d4d6ca89ad52da1ea5491/FLAG2d456e1b8 [2023-11-06 22:18:05,105 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/data/1566f9f53/5ce93420a72d4d6ca89ad52da1ea5491 [2023-11-06 22:18:05,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:05,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:05,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:05,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:05,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:05,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:05" (1/1) ... [2023-11-06 22:18:05,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f56aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:05, skipping insertion in model container [2023-11-06 22:18:05,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:05" (1/1) ... [2023-11-06 22:18:05,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:05,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:05,964 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:06,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:06,212 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:06,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06 WrapperNode [2023-11-06 22:18:06,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:06,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:06,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:06,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:06,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,280 INFO L138 Inliner]: procedures = 370, calls = 42, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 199 [2023-11-06 22:18:06,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:06,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:06,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:06,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:06,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,334 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,348 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:06,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:06,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:06,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:06,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (1/1) ... [2023-11-06 22:18:06,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:18:06,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:06,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:06,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f64d5a3-2e24-4007-ab20-d69c598ecaf8/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:18:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:18:06,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:18:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:18:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:18:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:18:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:18:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:18:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:18:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:18:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:06,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:06,448 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:18:06,617 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:06,619 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:07,362 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:07,373 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:07,373 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:18:07,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:07 BoogieIcfgContainer [2023-11-06 22:18:07,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:07,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:18:07,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:18:07,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:18:07,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:18:05" (1/3) ... [2023-11-06 22:18:07,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6809ce99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:07, skipping insertion in model container [2023-11-06 22:18:07,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:06" (2/3) ... [2023-11-06 22:18:07,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6809ce99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:18:07, skipping insertion in model container [2023-11-06 22:18:07,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:07" (3/3) ... [2023-11-06 22:18:07,386 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_13-arraycollapse_nr-deref.i [2023-11-06 22:18:07,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:18:07,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 81 error locations. [2023-11-06 22:18:07,406 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:18:07,504 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:18:07,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 338 transitions, 680 flow [2023-11-06 22:18:07,682 INFO L124 PetriNetUnfolderBase]: 5/337 cut-off events. [2023-11-06 22:18:07,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:07,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 337 events. 5/337 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 334 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 251. Up to 2 conditions per place. [2023-11-06 22:18:07,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 338 transitions, 680 flow [2023-11-06 22:18:07,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 337 transitions, 677 flow [2023-11-06 22:18:07,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:18:07,711 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 337 transitions, 677 flow [2023-11-06 22:18:07,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 337 transitions, 677 flow [2023-11-06 22:18:07,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 337 transitions, 677 flow [2023-11-06 22:18:07,809 INFO L124 PetriNetUnfolderBase]: 5/337 cut-off events. [2023-11-06 22:18:07,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:18:07,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 337 events. 5/337 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 334 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 251. Up to 2 conditions per place. [2023-11-06 22:18:07,816 INFO L119 LiptonReduction]: Number of co-enabled transitions 3192 [2023-11-06 22:19:17,428 WARN L293 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 192 DAG size of output: 186 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:19:45,762 WARN L293 SmtUtils]: Spent 23.01s on a formula simplification. DAG size of input: 205 DAG size of output: 199 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:19:55,825 WARN L293 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 187 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:20:10,758 WARN L293 SmtUtils]: Spent 14.93s on a formula simplification. DAG size of input: 208 DAG size of output: 202 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:20:20,490 WARN L293 SmtUtils]: Spent 9.73s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:20:25,631 WARN L293 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 186 DAG size of output: 180 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:20:37,999 WARN L293 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 189 DAG size of output: 183 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:20:59,887 WARN L293 SmtUtils]: Spent 18.08s on a formula simplification. DAG size of input: 243 DAG size of output: 231 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:21:21,113 WARN L293 SmtUtils]: Spent 16.84s on a formula simplification. DAG size of input: 243 DAG size of output: 231 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:22:10,369 WARN L293 SmtUtils]: Spent 43.01s on a formula simplification. DAG size of input: 255 DAG size of output: 239 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:22:28,274 WARN L293 SmtUtils]: Spent 17.90s on a formula simplification that was a NOOP. DAG size: 223 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)