./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --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-cf1a783 [2023-11-12 02:06:35,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:35,609 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:06:35,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:35,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:35,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:35,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:35,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:35,706 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:35,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:35,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:35,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:35,714 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:35,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:35,716 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:35,716 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:35,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:35,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:35,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:35,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:35,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:35,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:35,720 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:35,720 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:35,720 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:35,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:35,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:35,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:35,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:35,723 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:35,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:35,725 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:35,725 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:35,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:35,726 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:35,726 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:35,726 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:35,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:35,727 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:35,727 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_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2023-11-12 02:06:36,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:36,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:36,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:36,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:36,104 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:36,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-12 02:06:39,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:39,617 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:39,618 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2023-11-12 02:06:39,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/data/7b5099510/0ec4dac88fd946b2a5b79870e8197433/FLAG83240ea1d [2023-11-12 02:06:39,670 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/data/7b5099510/0ec4dac88fd946b2a5b79870e8197433 [2023-11-12 02:06:39,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:39,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:39,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:39,682 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:39,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:39,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48aedf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39, skipping insertion in model container [2023-11-12 02:06:39,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,790 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:40,499 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63614,63627] [2023-11-12 02:06:40,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:40,556 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:40,679 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63614,63627] [2023-11-12 02:06:40,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:40,813 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:40,813 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:40,822 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:40,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40 WrapperNode [2023-11-12 02:06:40,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:40,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:40,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:40,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:40,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,046 INFO L138 Inliner]: procedures = 397, calls = 218, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3786 [2023-11-12 02:06:41,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:41,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:41,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:41,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:41,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:41,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:41,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:41,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:41,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:41,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:41,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:41,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:41,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3216a5a7-d43d-41e8-a645-38e3d67c5fa7/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:06:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:06:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:06:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:06:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:06:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2023-11-12 02:06:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2023-11-12 02:06:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2023-11-12 02:06:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2023-11-12 02:06:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2023-11-12 02:06:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2023-11-12 02:06:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:06:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:06:41,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:06:41,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:06:41,464 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2023-11-12 02:06:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2023-11-12 02:06:41,464 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2023-11-12 02:06:41,464 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2023-11-12 02:06:41,465 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2023-11-12 02:06:41,465 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2023-11-12 02:06:41,465 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2023-11-12 02:06:41,465 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2023-11-12 02:06:41,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:41,469 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:06:41,905 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:41,911 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:45,906 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:49,175 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:49,176 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:06:49,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:49 BoogieIcfgContainer [2023-11-12 02:06:49,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:49,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:49,188 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:49,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:49,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:39" (1/3) ... [2023-11-12 02:06:49,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638250ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:49, skipping insertion in model container [2023-11-12 02:06:49,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (2/3) ... [2023-11-12 02:06:49,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638250ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:49, skipping insertion in model container [2023-11-12 02:06:49,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:49" (3/3) ... [2023-11-12 02:06:49,195 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2023-11-12 02:06:49,205 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:06:49,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:49,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-12 02:06:49,218 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:06:50,242 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:06:50,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2412 places, 2537 transitions, 5102 flow [2023-11-12 02:06:55,190 INFO L124 PetriNetUnfolderBase]: 147/2530 cut-off events. [2023-11-12 02:06:55,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:06:55,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2552 conditions, 2530 events. 147/2530 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 17398 event pairs, 0 based on Foata normal form. 0/2376 useless extension candidates. Maximal degree in co-relation 2480. Up to 6 conditions per place. [2023-11-12 02:06:55,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 2412 places, 2537 transitions, 5102 flow [2023-11-12 02:06:55,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2405 places, 2530 transitions, 5081 flow [2023-11-12 02:06:55,431 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:06:55,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2405 places, 2530 transitions, 5081 flow [2023-11-12 02:06:55,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2405 places, 2530 transitions, 5081 flow [2023-11-12 02:06:55,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2405 places, 2530 transitions, 5081 flow [2023-11-12 02:06:59,937 INFO L124 PetriNetUnfolderBase]: 147/2530 cut-off events. [2023-11-12 02:06:59,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:00,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2552 conditions, 2530 events. 147/2530 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 17393 event pairs, 0 based on Foata normal form. 0/2376 useless extension candidates. Maximal degree in co-relation 2480. Up to 6 conditions per place. [2023-11-12 02:07:01,382 INFO L119 LiptonReduction]: Number of co-enabled transitions 5169264 [2023-11-12 02:07:22,088 WARN L293 SmtUtils]: Spent 15.61s on a formula simplification. DAG size of input: 281 DAG size of output: 274 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-12 02:07:29,666 WARN L293 SmtUtils]: Spent 7.57s on a formula simplification that was a NOOP. DAG size: 271 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)