./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB --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 e83225601d835c9b02ede9a5751213533e33817a9795ca1ab6ec7c2abd672056 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:40:37,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:40:37,950 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:40:37,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:40:37,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:40:37,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:40:37,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:40:37,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:40:37,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:40:37,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:40:37,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:40:37,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:40:37,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:40:37,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:40:37,983 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:40:37,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:40:37,983 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:40:37,984 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:40:37,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:40:37,985 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:40:37,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:40:37,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:40:37,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:40:37,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:40:37,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:40:37,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:40:37,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:40:37,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:40:37,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:40:37,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:40:37,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:40:37,986 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:40:37,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:40:37,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:40:37,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:40:37,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:40:37,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:40:37,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:40:37,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:40:37,987 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB 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 -> e83225601d835c9b02ede9a5751213533e33817a9795ca1ab6ec7c2abd672056 [2024-11-28 04:40:38,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:40:38,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:40:38,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:40:38,294 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:40:38,294 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:40:38,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2024-11-28 04:40:41,337 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/data/1cd420425/fa5e94a66bb84540af0c94034261115c/FLAGd59de1eda [2024-11-28 04:40:41,682 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:40:41,682 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2024-11-28 04:40:41,705 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/data/1cd420425/fa5e94a66bb84540af0c94034261115c/FLAGd59de1eda [2024-11-28 04:40:41,730 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/data/1cd420425/fa5e94a66bb84540af0c94034261115c [2024-11-28 04:40:41,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:40:41,734 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:40:41,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:40:41,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:40:41,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:40:41,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:41" (1/1) ... [2024-11-28 04:40:41,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2f0a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:41, skipping insertion in model container [2024-11-28 04:40:41,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:41" (1/1) ... [2024-11-28 04:40:41,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:40:42,282 WARN L250 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_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/sv-benchmarks/c/pthread-ext/40_barrier_vf.i[30834,30847] [2024-11-28 04:40:42,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:40:42,317 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:40:42,358 WARN L250 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_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/sv-benchmarks/c/pthread-ext/40_barrier_vf.i[30834,30847] [2024-11-28 04:40:42,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:40:42,405 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:40:42,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42 WrapperNode [2024-11-28 04:40:42,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:40:42,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:40:42,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:40:42,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:40:42,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,455 INFO L138 Inliner]: procedures = 164, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 170 [2024-11-28 04:40:42,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:40:42,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:40:42,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:40:42,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:40:42,467 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,494 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-28 04:40:42,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,503 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,512 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:40:42,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:40:42,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:40:42,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:40:42,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (1/1) ... [2024-11-28 04:40:42,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:40:42,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:42,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:40:42,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6147fe2c-6aeb-4ad8-87e2-1de0b4c75e2a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:40:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 04:40:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 04:40:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 04:40:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:40:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:40:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:40:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 04:40:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:40:42,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:40:42,606 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:40:42,816 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:40:42,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:40:43,219 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:40:43,219 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:40:44,450 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:40:44,450 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 04:40:44,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:44 BoogieIcfgContainer [2024-11-28 04:40:44,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:40:44,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:40:44,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:40:44,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:40:44,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:40:41" (1/3) ... [2024-11-28 04:40:44,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aee397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:40:44, skipping insertion in model container [2024-11-28 04:40:44,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:42" (2/3) ... [2024-11-28 04:40:44,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79aee397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:40:44, skipping insertion in model container [2024-11-28 04:40:44,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:44" (3/3) ... [2024-11-28 04:40:44,499 INFO L128 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf.i [2024-11-28 04:40:44,516 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:40:44,518 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 40_barrier_vf.i that has 2 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:40:44,519 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:40:44,578 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:40:44,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 19 transitions, 42 flow [2024-11-28 04:40:44,670 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-28 04:40:44,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:40:44,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 2/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2024-11-28 04:40:44,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 19 transitions, 42 flow [2024-11-28 04:40:44,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 19 transitions, 42 flow [2024-11-28 04:40:44,700 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:40:44,719 INFO L333 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, 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;@ef567c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:40:44,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 04:40:44,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:40:44,736 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-28 04:40:44,736 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:40:44,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:40:44,737 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:40:44,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:44,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:44,744 INFO L85 PathProgramCache]: Analyzing trace with hash -609113093, now seen corresponding path program 1 times [2024-11-28 04:40:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:44,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983992377] [2024-11-28 04:40:44,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:40:45,245 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:40:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:40:45,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:40:45,312 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:40:45,313 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-28 04:40:45,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-28 04:40:45,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-28 04:40:45,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:40:45,316 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 04:40:45,320 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:40:45,320 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 04:40:45,352 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:40:45,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 76 flow [2024-11-28 04:40:45,388 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-28 04:40:45,388 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:40:45,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2024-11-28 04:40:45,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 33 transitions, 76 flow [2024-11-28 04:40:45,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 33 transitions, 76 flow [2024-11-28 04:40:45,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:40:45,394 INFO L333 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, 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;@ef567c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:40:45,394 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 04:40:45,414 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:40:45,414 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2024-11-28 04:40:45,414 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:40:45,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:40:45,414 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 04:40:45,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-28 04:40:45,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1162957855, now seen corresponding path program 1 times [2024-11-28 04:40:45,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:45,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026652334] [2024-11-28 04:40:45,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:45,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:40:45,779 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:40:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:40:45,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:40:45,822 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:40:45,822 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-28 04:40:45,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-28 04:40:45,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-28 04:40:45,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-28 04:40:45,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:40:45,827 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 04:40:45,828 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:40:45,828 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 04:40:45,872 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:40:45,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 112 flow [2024-11-28 04:40:45,891 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-11-28 04:40:45,891 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 04:40:45,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 6/55 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2024-11-28 04:40:45,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 112 flow [2024-11-28 04:40:45,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 47 transitions, 112 flow [2024-11-28 04:40:45,894 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:40:45,895 INFO L333 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, 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;@ef567c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:40:45,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 04:40:45,907 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:40:45,907 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2024-11-28 04:40:45,907 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:40:45,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:40:45,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:45,908 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 04:40:45,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1333026666, now seen corresponding path program 1 times [2024-11-28 04:40:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37965745] [2024-11-28 04:40:45,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:45,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:46,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:46,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37965745] [2024-11-28 04:40:46,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37965745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:46,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:40:46,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:40:46,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743301318] [2024-11-28 04:40:46,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:46,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:40:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:46,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:40:46,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:40:46,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-28 04:40:46,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-11-28 04:40:46,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:40:46,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-28 04:40:46,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:40:48,974 INFO L124 PetriNetUnfolderBase]: 11865/18094 cut-off events. [2024-11-28 04:40:48,975 INFO L125 PetriNetUnfolderBase]: For 646/646 co-relation queries the response was YES. [2024-11-28 04:40:49,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34415 conditions, 18094 events. 11865/18094 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 121996 event pairs, 3130 based on Foata normal form. 2487/20484 useless extension candidates. Maximal degree in co-relation 21167. Up to 6104 conditions per place. [2024-11-28 04:40:49,133 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 78 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2024-11-28 04:40:49,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 98 transitions, 409 flow [2024-11-28 04:40:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:40:49,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:40:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-28 04:40:49,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.776595744680851 [2024-11-28 04:40:49,152 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 112 flow. Second operand 4 states and 146 transitions. [2024-11-28 04:40:49,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 98 transitions, 409 flow [2024-11-28 04:40:49,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 98 transitions, 403 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 04:40:49,167 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 140 flow [2024-11-28 04:40:49,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2024-11-28 04:40:49,175 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-11-28 04:40:49,175 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 140 flow [2024-11-28 04:40:49,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-11-28 04:40:49,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:40:49,176 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:49,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:40:49,176 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 04:40:49,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:49,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1626801118, now seen corresponding path program 1 times [2024-11-28 04:40:49,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:49,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358850123] [2024-11-28 04:40:49,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:49,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:49,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:49,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358850123] [2024-11-28 04:40:49,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358850123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:49,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:40:49,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:40:49,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851594806] [2024-11-28 04:40:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:49,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:40:49,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:49,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:40:49,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:40:49,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-11-28 04:40:49,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-28 04:40:49,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:40:49,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-11-28 04:40:49,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:40:51,119 INFO L124 PetriNetUnfolderBase]: 6742/10548 cut-off events. [2024-11-28 04:40:51,119 INFO L125 PetriNetUnfolderBase]: For 652/652 co-relation queries the response was YES. [2024-11-28 04:40:51,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20679 conditions, 10548 events. 6742/10548 cut-off events. For 652/652 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 68572 event pairs, 2218 based on Foata normal form. 474/10974 useless extension candidates. Maximal degree in co-relation 17549. Up to 6994 conditions per place. [2024-11-28 04:40:51,185 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 53 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-11-28 04:40:51,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 301 flow [2024-11-28 04:40:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:40:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:40:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-28 04:40:51,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-11-28 04:40:51,187 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 140 flow. Second operand 3 states and 84 transitions. [2024-11-28 04:40:51,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 301 flow [2024-11-28 04:40:51,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:40:51,191 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 158 flow [2024-11-28 04:40:51,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-11-28 04:40:51,192 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2024-11-28 04:40:51,192 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 158 flow [2024-11-28 04:40:51,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-28 04:40:51,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:40:51,193 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 04:40:51,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:40:51,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 04:40:51,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:51,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1746393062, now seen corresponding path program 1 times [2024-11-28 04:40:51,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:51,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304030495] [2024-11-28 04:40:51,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:40:51,356 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:40:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:40:51,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:40:51,402 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:40:51,403 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-28 04:40:51,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-28 04:40:51,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-28 04:40:51,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-28 04:40:51,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-28 04:40:51,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:40:51,404 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 04:40:51,404 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:40:51,404 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 04:40:51,456 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:40:51,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 61 transitions, 150 flow [2024-11-28 04:40:51,479 INFO L124 PetriNetUnfolderBase]: 8/72 cut-off events. [2024-11-28 04:40:51,479 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 04:40:51,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 72 events. 8/72 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 67. Up to 5 conditions per place. [2024-11-28 04:40:51,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 61 transitions, 150 flow [2024-11-28 04:40:51,482 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 61 transitions, 150 flow [2024-11-28 04:40:51,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:40:51,486 INFO L333 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, 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;@ef567c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:40:51,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 04:40:51,497 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:40:51,498 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2024-11-28 04:40:51,498 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:40:51,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:40:51,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:51,498 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 04:40:51,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1386017782, now seen corresponding path program 1 times [2024-11-28 04:40:51,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:51,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900114240] [2024-11-28 04:40:51,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:40:51,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:51,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900114240] [2024-11-28 04:40:51,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900114240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:40:51,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:40:51,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:40:51,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601537700] [2024-11-28 04:40:51,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:40:51,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:40:51,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:51,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:40:51,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:40:51,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2024-11-28 04:40:51,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-11-28 04:40:51,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:40:51,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2024-11-28 04:40:51,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:09,658 INFO L124 PetriNetUnfolderBase]: 184809/255444 cut-off events. [2024-11-28 04:41:09,658 INFO L125 PetriNetUnfolderBase]: For 13779/13779 co-relation queries the response was YES. [2024-11-28 04:41:10,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492325 conditions, 255444 events. 184809/255444 cut-off events. For 13779/13779 co-relation queries the response was YES. Maximal size of possible extension queue 10269. Compared 1948897 event pairs, 49795 based on Foata normal form. 36477/290370 useless extension candidates. Maximal degree in co-relation 172157. Up to 83388 conditions per place. [2024-11-28 04:41:11,273 INFO L140 encePairwiseOnDemand]: 47/61 looper letters, 103 selfloop transitions, 13 changer transitions 0/129 dead transitions. [2024-11-28 04:41:11,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 129 transitions, 555 flow [2024-11-28 04:41:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:41:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:41:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-28 04:41:11,276 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7827868852459017 [2024-11-28 04:41:11,276 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 150 flow. Second operand 4 states and 191 transitions. [2024-11-28 04:41:11,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 129 transitions, 555 flow [2024-11-28 04:41:11,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 129 transitions, 537 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-28 04:41:11,288 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 184 flow [2024-11-28 04:41:11,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-11-28 04:41:11,289 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2024-11-28 04:41:11,290 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 184 flow [2024-11-28 04:41:11,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-11-28 04:41:11,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:11,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:11,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:41:11,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 04:41:11,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash -17833012, now seen corresponding path program 1 times [2024-11-28 04:41:11,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:11,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933458762] [2024-11-28 04:41:11,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:11,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:11,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:11,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933458762] [2024-11-28 04:41:11,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933458762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:11,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:11,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:41:11,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599904881] [2024-11-28 04:41:11,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:11,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:41:11,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:11,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:41:11,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:41:11,588 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2024-11-28 04:41:11,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-28 04:41:11,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:11,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2024-11-28 04:41:11,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:22,638 INFO L124 PetriNetUnfolderBase]: 124939/175614 cut-off events. [2024-11-28 04:41:22,638 INFO L125 PetriNetUnfolderBase]: For 11908/11908 co-relation queries the response was YES. [2024-11-28 04:41:22,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348301 conditions, 175614 events. 124939/175614 cut-off events. For 11908/11908 co-relation queries the response was YES. Maximal size of possible extension queue 6970. Compared 1338919 event pairs, 36811 based on Foata normal form. 4062/178368 useless extension candidates. Maximal degree in co-relation 296379. Up to 140026 conditions per place. [2024-11-28 04:41:23,906 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 78 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-11-28 04:41:23,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 448 flow [2024-11-28 04:41:23,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:41:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:41:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-28 04:41:23,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6229508196721312 [2024-11-28 04:41:23,909 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 184 flow. Second operand 3 states and 114 transitions. [2024-11-28 04:41:23,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 448 flow [2024-11-28 04:41:23,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:41:23,919 INFO L231 Difference]: Finished difference. Result has 63 places, 68 transitions, 231 flow [2024-11-28 04:41:23,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=63, PETRI_TRANSITIONS=68} [2024-11-28 04:41:23,920 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2024-11-28 04:41:23,920 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 68 transitions, 231 flow [2024-11-28 04:41:23,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-28 04:41:23,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:23,921 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:23,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:41:23,921 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 04:41:23,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1988325668, now seen corresponding path program 1 times [2024-11-28 04:41:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:23,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602198594] [2024-11-28 04:41:23,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:23,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:41:24,170 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:41:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:41:24,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:41:24,212 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:41:24,212 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-28 04:41:24,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-28 04:41:24,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-28 04:41:24,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-28 04:41:24,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-28 04:41:24,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-28 04:41:24,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:41:24,217 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 04:41:24,218 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:41:24,218 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-28 04:41:24,271 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 04:41:24,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 75 transitions, 190 flow [2024-11-28 04:41:24,300 INFO L124 PetriNetUnfolderBase]: 10/89 cut-off events. [2024-11-28 04:41:24,300 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 04:41:24,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 89 events. 10/89 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 233 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2024-11-28 04:41:24,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 75 transitions, 190 flow [2024-11-28 04:41:24,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 75 transitions, 190 flow [2024-11-28 04:41:24,304 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:41:24,307 INFO L333 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, 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;@ef567c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:41:24,307 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 04:41:24,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:41:24,322 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-11-28 04:41:24,322 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:41:24,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:24,322 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:24,323 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-28 04:41:24,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1586445552, now seen corresponding path program 1 times [2024-11-28 04:41:24,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:24,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554776973] [2024-11-28 04:41:24,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:24,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:24,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554776973] [2024-11-28 04:41:24,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554776973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:24,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:24,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:41:24,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666461337] [2024-11-28 04:41:24,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:24,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:41:24,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:24,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:41:24,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:41:24,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 75 [2024-11-28 04:41:24,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-28 04:41:24,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:24,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 75 [2024-11-28 04:41:24,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand