./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 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_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/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_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/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_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/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 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:54:51,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:54:51,478 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:54:51,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:54:51,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:54:51,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:54:51,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:54:51,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:54:51,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:54:51,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:54:51,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:54:51,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:54:51,545 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:54:51,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:54:51,547 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:54:51,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:54:51,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:54:51,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:54:51,549 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:54:51,550 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:54:51,551 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:54:51,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:54:51,552 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:54:51,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:54:51,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:54:51,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:54:51,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:54:51,556 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:54:51,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:54:51,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:51,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:54:51,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:54:51,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:54:51,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:54:51,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:54:51,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:54:51,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:54:51,561 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:54:51,561 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_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115e066856baca443b44a0f6b5ce54f74ba2b2820e5612bf4393c0e893767d55 [2023-11-06 22:54:51,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:54:52,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:54:52,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:54:52,005 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:54:52,006 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:54:52,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-06 22:54:55,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:54:55,656 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:54:55,656 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-06 22:54:55,678 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/data/481ef835e/d77d53e2633b46ce9c9fa57c1923e499/FLAG1049cbe7e [2023-11-06 22:54:55,693 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/data/481ef835e/d77d53e2633b46ce9c9fa57c1923e499 [2023-11-06 22:54:55,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:54:55,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:54:55,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:55,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:54:55,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:54:55,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:55" (1/1) ... [2023-11-06 22:54:55,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4725945a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:55, skipping insertion in model container [2023-11-06 22:54:55,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:54:55" (1/1) ... [2023-11-06 22:54:55,759 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:54:56,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:56,720 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:54:56,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:54:56,978 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:54:56,978 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:54:56,987 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:54:56,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56 WrapperNode [2023-11-06 22:54:56,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:54:56,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:56,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:54:56,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:54:56,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,326 INFO L138 Inliner]: procedures = 397, calls = 215, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3793 [2023-11-06 22:54:57,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:54:57,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:54:57,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:54:57,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:54:57,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,516 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:54:57,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:54:57,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:54:57,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:54:57,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (1/1) ... [2023-11-06 22:54:57,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:57,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:54:57,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:54:57,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc2d4dc4-8345-4e0f-9d5d-e0c483594ab2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:54:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:54:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:54:57,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:54:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:54:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:54:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:54:57,723 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2023-11-06 22:54:57,723 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2023-11-06 22:54:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2023-11-06 22:54:57,724 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2023-11-06 22:54:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2023-11-06 22:54:57,724 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2023-11-06 22:54:57,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:54:57,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:54:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:54:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:54:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:54:57,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:54:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2023-11-06 22:54:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2023-11-06 22:54:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2023-11-06 22:54:57,726 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2023-11-06 22:54:57,726 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2023-11-06 22:54:57,727 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2023-11-06 22:54:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2023-11-06 22:54:57,727 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2023-11-06 22:54:57,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:54:57,731 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 22:54:58,133 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:54:58,136 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:55:04,039 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:55:11,778 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:55:11,778 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:55:11,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:11 BoogieIcfgContainer [2023-11-06 22:55:11,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:55:11,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:55:11,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:55:11,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:55:11,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:54:55" (1/3) ... [2023-11-06 22:55:11,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3337f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:11, skipping insertion in model container [2023-11-06 22:55:11,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:54:56" (2/3) ... [2023-11-06 22:55:11,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3337f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:11, skipping insertion in model container [2023-11-06 22:55:11,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:11" (3/3) ... [2023-11-06 22:55:11,795 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2023-11-06 22:55:11,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:55:11,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1344 error locations. [2023-11-06 22:55:11,815 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:55:14,907 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:55:15,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 3773 places, 3898 transitions, 7824 flow [2023-11-06 22:55:25,172 INFO L124 PetriNetUnfolderBase]: 147/3891 cut-off events. [2023-11-06 22:55:25,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:55:25,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 3891 events. 147/3891 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 31844 event pairs, 0 based on Foata normal form. 0/2400 useless extension candidates. Maximal degree in co-relation 3836. Up to 6 conditions per place. [2023-11-06 22:55:25,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 3773 places, 3898 transitions, 7824 flow [2023-11-06 22:55:26,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 3766 places, 3891 transitions, 7803 flow [2023-11-06 22:55:26,497 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:55:26,507 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 3766 places, 3891 transitions, 7803 flow [2023-11-06 22:55:26,511 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 3766 places, 3891 transitions, 7803 flow [2023-11-06 22:55:26,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 3766 places, 3891 transitions, 7803 flow [2023-11-06 22:55:35,736 INFO L124 PetriNetUnfolderBase]: 147/3891 cut-off events. [2023-11-06 22:55:35,736 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:55:36,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 3891 events. 147/3891 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 31861 event pairs, 0 based on Foata normal form. 0/2400 useless extension candidates. Maximal degree in co-relation 3836. Up to 6 conditions per place. [2023-11-06 22:55:39,897 INFO L119 LiptonReduction]: Number of co-enabled transitions 12425448 [2023-11-06 22:56:36,133 WARN L293 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 228 DAG size of output: 198 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:56:48,115 WARN L293 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 246 DAG size of output: 211 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:57:29,277 WARN L293 SmtUtils]: Spent 37.68s on a formula simplification. DAG size of input: 441 DAG size of output: 355 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:57:45,002 WARN L293 SmtUtils]: Spent 15.72s on a formula simplification that was a NOOP. DAG size: 351 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)