./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/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_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu --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 e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:38,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:38,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:58:38,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:38,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:38,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:38,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:38,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:38,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:58:38,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:58:38,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:38,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:38,247 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:38,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:38,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:58:38,249 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:58:38,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:38,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:58:38,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:38,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:58:38,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:58:38,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:58:38,253 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:58:38,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:58:38,254 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:38,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:38,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:38,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:58:38,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:38,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:38,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:58:38,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:58:38,259 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:38,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:58:38,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:58:38,260 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:58:38,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:58:38,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:58:38,261 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:58:38,262 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_0abe7dd3-d148-47a1-a234-38676cb3aa50/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e [2023-11-19 07:58:38,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:38,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:38,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:38,653 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:38,653 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:38,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/stateful01-2.i [2023-11-19 07:58:41,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:42,069 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:42,070 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/sv-benchmarks/c/pthread/stateful01-2.i [2023-11-19 07:58:42,088 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/data/398b14a27/694aa8b1a2614b49b24af71a920f24b6/FLAGe8a820e5d [2023-11-19 07:58:42,101 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/data/398b14a27/694aa8b1a2614b49b24af71a920f24b6 [2023-11-19 07:58:42,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:42,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:42,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:42,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:42,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:42,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb81527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42, skipping insertion in model container [2023-11-19 07:58:42,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,183 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:42,598 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_0abe7dd3-d148-47a1-a234-38676cb3aa50/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2023-11-19 07:58:42,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:42,620 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:42,658 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_0abe7dd3-d148-47a1-a234-38676cb3aa50/sv-benchmarks/c/pthread/stateful01-2.i[30826,30839] [2023-11-19 07:58:42,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:42,703 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:42,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42 WrapperNode [2023-11-19 07:58:42,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:42,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:42,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:42,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:42,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,780 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2023-11-19 07:58:42,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:42,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:42,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:42,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:42,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:42,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:42,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:42,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:42,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (1/1) ... [2023-11-19 07:58:42,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:42,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:42,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:42,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:42,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:42,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:58:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:58:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:58:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:58:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:58:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:42,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:42,894 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 07:58:43,036 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:43,038 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:43,282 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:43,312 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:43,313 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:58:43,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:43 BoogieIcfgContainer [2023-11-19 07:58:43,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:43,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:43,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:43,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:43,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:42" (1/3) ... [2023-11-19 07:58:43,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b34590c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:43, skipping insertion in model container [2023-11-19 07:58:43,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:42" (2/3) ... [2023-11-19 07:58:43,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b34590c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:43, skipping insertion in model container [2023-11-19 07:58:43,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:43" (3/3) ... [2023-11-19 07:58:43,334 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2023-11-19 07:58:43,345 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:58:43,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:43,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:58:43,358 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:58:43,459 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:58:43,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 192 flow [2023-11-19 07:58:43,548 INFO L124 PetriNetUnfolderBase]: 1/87 cut-off events. [2023-11-19 07:58:43,548 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:58:43,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 1/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-11-19 07:58:43,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 192 flow [2023-11-19 07:58:43,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 164 flow [2023-11-19 07:58:43,561 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:43,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 76 transitions, 164 flow [2023-11-19 07:58:43,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 76 transitions, 164 flow [2023-11-19 07:58:43,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 164 flow [2023-11-19 07:58:43,605 INFO L124 PetriNetUnfolderBase]: 0/76 cut-off events. [2023-11-19 07:58:43,605 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:58:43,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 0/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-19 07:58:43,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 732 [2023-11-19 07:58:47,582 INFO L134 LiptonReduction]: Checked pairs total: 2459 [2023-11-19 07:58:47,582 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-11-19 07:58:47,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:47,607 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20e292f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:47,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 07:58:47,616 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:58:47,616 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-11-19 07:58:47,616 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:58:47,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:47,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:47,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:58:47,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:47,624 INFO L85 PathProgramCache]: Analyzing trace with hash 767123772, now seen corresponding path program 1 times [2023-11-19 07:58:47,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224307316] [2023-11-19 07:58:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224307316] [2023-11-19 07:58:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224307316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:48,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:48,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:48,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549815514] [2023-11-19 07:58:48,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:48,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:48,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:48,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:48,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:48,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 142 [2023-11-19 07:58:48,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:48,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 142 [2023-11-19 07:58:48,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:48,752 INFO L124 PetriNetUnfolderBase]: 135/313 cut-off events. [2023-11-19 07:58:48,753 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-19 07:58:48,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 313 events. 135/313 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1388 event pairs, 37 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 530. Up to 129 conditions per place. [2023-11-19 07:58:48,760 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 24 selfloop transitions, 4 changer transitions 15/47 dead transitions. [2023-11-19 07:58:48,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 201 flow [2023-11-19 07:58:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 500 transitions. [2023-11-19 07:58:48,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5868544600938967 [2023-11-19 07:58:48,786 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 500 transitions. [2023-11-19 07:58:48,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 500 transitions. [2023-11-19 07:58:48,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:48,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 500 transitions. [2023-11-19 07:58:48,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,808 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,811 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 58 flow. Second operand 6 states and 500 transitions. [2023-11-19 07:58:48,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 201 flow [2023-11-19 07:58:48,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 187 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:58:48,817 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 73 flow [2023-11-19 07:58:48,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-11-19 07:58:48,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2023-11-19 07:58:48,829 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 73 flow [2023-11-19 07:58:48,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:48,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:48,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:48,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:48,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:58:48,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash -23878364, now seen corresponding path program 2 times [2023-11-19 07:58:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:48,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270194097] [2023-11-19 07:58:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:49,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:49,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270194097] [2023-11-19 07:58:49,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270194097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:49,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:49,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:49,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78011993] [2023-11-19 07:58:49,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:49,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:49,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:49,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:49,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:49,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-11-19 07:58:49,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:49,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-11-19 07:58:49,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:49,209 INFO L124 PetriNetUnfolderBase]: 58/163 cut-off events. [2023-11-19 07:58:49,209 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-19 07:58:49,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 163 events. 58/163 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 528 event pairs, 20 based on Foata normal form. 30/193 useless extension candidates. Maximal degree in co-relation 344. Up to 98 conditions per place. [2023-11-19 07:58:49,217 INFO L140 encePairwiseOnDemand]: 134/142 looper letters, 18 selfloop transitions, 8 changer transitions 1/29 dead transitions. [2023-11-19 07:58:49,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 134 flow [2023-11-19 07:58:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:58:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-11-19 07:58:49,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5774647887323944 [2023-11-19 07:58:49,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-11-19 07:58:49,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-11-19 07:58:49,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:49,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-11-19 07:58:49,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,237 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 73 flow. Second operand 3 states and 246 transitions. [2023-11-19 07:58:49,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 134 flow [2023-11-19 07:58:49,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 130 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:58:49,244 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 74 flow [2023-11-19 07:58:49,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-11-19 07:58:49,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-11-19 07:58:49,247 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 74 flow [2023-11-19 07:58:49,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:58:49,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:49,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:49,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:58:49,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash -949725184, now seen corresponding path program 3 times [2023-11-19 07:58:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:49,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044713318] [2023-11-19 07:58:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:49,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:49,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:49,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044713318] [2023-11-19 07:58:49,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044713318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:49,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:49,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:49,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400879104] [2023-11-19 07:58:49,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:49,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:49,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:49,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:49,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:49,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 142 [2023-11-19 07:58:49,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:58:49,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 142 [2023-11-19 07:58:49,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:58:49,602 INFO L124 PetriNetUnfolderBase]: 43/133 cut-off events. [2023-11-19 07:58:49,602 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-19 07:58:49,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 133 events. 43/133 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 391 event pairs, 6 based on Foata normal form. 1/134 useless extension candidates. Maximal degree in co-relation 114. Up to 47 conditions per place. [2023-11-19 07:58:49,604 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-11-19 07:58:49,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 167 flow [2023-11-19 07:58:49,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:58:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 488 transitions. [2023-11-19 07:58:49,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727699530516432 [2023-11-19 07:58:49,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 488 transitions. [2023-11-19 07:58:49,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 488 transitions. [2023-11-19 07:58:49,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:58:49,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 488 transitions. [2023-11-19 07:58:49,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.33333333333333) internal successors, (488), 6 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,615 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,615 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 74 flow. Second operand 6 states and 488 transitions. [2023-11-19 07:58:49,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 167 flow [2023-11-19 07:58:49,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 153 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:58:49,617 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-11-19 07:58:49,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-11-19 07:58:49,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-11-19 07:58:49,619 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-11-19 07:58:49,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:49,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-19 07:58:49,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-19 07:58:49,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-19 07:58:49,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:58:49,625 INFO L445 BasicCegarLoop]: Path program histogram: [3] [2023-11-19 07:58:49,629 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:58:49,629 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:58:49,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:58:49 BasicIcfg [2023-11-19 07:58:49,634 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:58:49,635 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:58:49,635 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:58:49,635 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:58:49,636 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:43" (3/4) ... [2023-11-19 07:58:49,638 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:58:49,643 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:58:49,644 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:58:49,649 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-19 07:58:49,649 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:58:49,650 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:58:49,650 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:58:49,750 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:58:49,750 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:58:49,750 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:58:49,751 INFO L158 Benchmark]: Toolchain (without parser) took 7645.50ms. Allocated memory was 161.5MB in the beginning and 199.2MB in the end (delta: 37.7MB). Free memory was 113.6MB in the beginning and 102.2MB in the end (delta: 11.4MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. [2023-11-19 07:58:49,752 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory was 56.7MB in the beginning and 56.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:58:49,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 596.73ms. Allocated memory is still 161.5MB. Free memory was 113.6MB in the beginning and 93.6MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:58:49,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.75ms. Allocated memory is still 161.5MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:58:49,753 INFO L158 Benchmark]: Boogie Preprocessor took 42.12ms. Allocated memory is still 161.5MB. Free memory was 91.5MB in the beginning and 90.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:58:49,753 INFO L158 Benchmark]: RCFGBuilder took 497.65ms. Allocated memory is still 161.5MB. Free memory was 90.1MB in the beginning and 128.4MB in the end (delta: -38.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:58:49,754 INFO L158 Benchmark]: TraceAbstraction took 6309.70ms. Allocated memory was 161.5MB in the beginning and 199.2MB in the end (delta: 37.7MB). Free memory was 128.2MB in the beginning and 106.4MB in the end (delta: 21.8MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2023-11-19 07:58:49,754 INFO L158 Benchmark]: Witness Printer took 115.89ms. Allocated memory is still 199.2MB. Free memory was 106.4MB in the beginning and 102.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:58:49,757 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory was 56.7MB in the beginning and 56.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 596.73ms. Allocated memory is still 161.5MB. Free memory was 113.6MB in the beginning and 93.6MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.75ms. Allocated memory is still 161.5MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.12ms. Allocated memory is still 161.5MB. Free memory was 91.5MB in the beginning and 90.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 497.65ms. Allocated memory is still 161.5MB. Free memory was 90.1MB in the beginning and 128.4MB in the end (delta: -38.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6309.70ms. Allocated memory was 161.5MB in the beginning and 199.2MB in the end (delta: 37.7MB). Free memory was 128.2MB in the beginning and 106.4MB in the end (delta: 21.8MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. * Witness Printer took 115.89ms. Allocated memory is still 199.2MB. Free memory was 106.4MB in the beginning and 102.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 83 PlacesBefore, 30 PlacesAfterwards, 76 TransitionsBefore, 23 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, 2459 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1341, independent: 1174, independent conditional: 0, independent unconditional: 1174, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 374, independent: 349, independent conditional: 0, independent unconditional: 349, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1341, independent: 825, independent conditional: 0, independent unconditional: 825, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 374, unknown conditional: 0, unknown unconditional: 374] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 727]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 385 IncrementalHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 4 mSDtfsCounter, 385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:58:49,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0abe7dd3-d148-47a1-a234-38676cb3aa50/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE