./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.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_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:30,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:31,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:00:31,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:31,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:31,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:31,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:31,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:31,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:31,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:31,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:31,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:31,180 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:31,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:31,183 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:31,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:31,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:31,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:31,186 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:00:31,186 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:00:31,187 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:00:31,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:31,188 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:00:31,189 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:31,189 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:31,190 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:31,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:31,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:31,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:31,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:31,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:31,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:31,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:31,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:31,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:31,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:31,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:31,197 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:31,198 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_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2023-11-19 08:00:31,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:31,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:31,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:31,574 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:31,575 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:31,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-19 08:00:34,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:35,179 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:35,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-19 08:00:35,204 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/data/de2a2a863/f98c77cec29c4a498afcbdb4ae0d7257/FLAG6fb1dbb3e [2023-11-19 08:00:35,221 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/data/de2a2a863/f98c77cec29c4a498afcbdb4ae0d7257 [2023-11-19 08:00:35,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:35,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:35,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:35,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:35,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:35,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:35" (1/1) ... [2023-11-19 08:00:35,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577a2302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:35, skipping insertion in model container [2023-11-19 08:00:35,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:35" (1/1) ... [2023-11-19 08:00:35,313 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:36,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:36,250 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:36,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:36,438 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:00:36,439 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:00:36,491 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:36,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36 WrapperNode [2023-11-19 08:00:36,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:36,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:36,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:36,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:36,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:36,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:36,757 INFO L138 Inliner]: procedures = 397, calls = 219, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3807 [2023-11-19 08:00:36,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:36,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:36,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:36,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:36,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:36,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:36,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:36,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:36,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:36,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:36,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:36,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:37,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:37,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:37,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:37,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:37,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (1/1) ... [2023-11-19 08:00:37,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:37,051 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:37,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d58582-9493-4658-8ba9-0a3b87488ec3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:00:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:00:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:00:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:00:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:00:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2023-11-19 08:00:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2023-11-19 08:00:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2023-11-19 08:00:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2023-11-19 08:00:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2023-11-19 08:00:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2023-11-19 08:00:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:00:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:00:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 08:00:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:00:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2023-11-19 08:00:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2023-11-19 08:00:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2023-11-19 08:00:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2023-11-19 08:00:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2023-11-19 08:00:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2023-11-19 08:00:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2023-11-19 08:00:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2023-11-19 08:00:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:37,110 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:00:37,567 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:37,569 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:43,258 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:50,752 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:50,752 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:00:50,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:50 BoogieIcfgContainer [2023-11-19 08:00:50,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:50,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:50,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:50,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:50,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:35" (1/3) ... [2023-11-19 08:00:50,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147a06d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:50, skipping insertion in model container [2023-11-19 08:00:50,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:36" (2/3) ... [2023-11-19 08:00:50,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147a06d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:50, skipping insertion in model container [2023-11-19 08:00:50,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:50" (3/3) ... [2023-11-19 08:00:50,781 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2023-11-19 08:00:50,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:50,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1344 error locations. [2023-11-19 08:00:50,803 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:00:53,771 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:00:53,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 3752 places, 4029 transitions, 8086 flow [2023-11-19 08:01:06,340 INFO L124 PetriNetUnfolderBase]: 299/4022 cut-off events. [2023-11-19 08:01:06,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:06,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 4022 events. 299/4022 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 32066 event pairs, 0 based on Foata normal form. 0/2379 useless extension candidates. Maximal degree in co-relation 3967. Up to 8 conditions per place. [2023-11-19 08:01:06,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 3752 places, 4029 transitions, 8086 flow [2023-11-19 08:01:07,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3745 places, 4022 transitions, 8065 flow [2023-11-19 08:01:07,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:01:07,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 3745 places, 4022 transitions, 8065 flow [2023-11-19 08:01:07,684 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 3745 places, 4022 transitions, 8065 flow [2023-11-19 08:01:07,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 3745 places, 4022 transitions, 8065 flow [2023-11-19 08:01:19,099 INFO L124 PetriNetUnfolderBase]: 299/4022 cut-off events. [2023-11-19 08:01:19,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:01:19,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 4022 events. 299/4022 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 32053 event pairs, 0 based on Foata normal form. 0/2379 useless extension candidates. Maximal degree in co-relation 3967. Up to 8 conditions per place.