./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.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_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1 --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 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:32:21,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:32:22,044 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:32:22,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:32:22,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:32:22,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:32:22,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:32:22,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:32:22,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:32:22,069 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:32:22,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:32:22,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:32:22,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:32:22,069 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:32:22,069 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:32:22,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:32:22,070 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:32:22,071 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:32:22,071 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:32:22,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:32:22,071 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:32:22,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:32:22,072 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:32:22,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:32:22,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:32:22,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:32:22,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:32:22,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:32:22,072 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_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1 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 -> 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed [2024-12-02 15:32:22,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:32:22,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:32:22,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:32:22,316 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:32:22,316 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:32:22,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-12-02 15:32:24,996 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/data/8b495596a/e5d5ca49d9fe40e99c8c037b0d924df3/FLAGbf8cc68f0 [2024-12-02 15:32:25,223 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:32:25,223 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-12-02 15:32:25,236 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/data/8b495596a/e5d5ca49d9fe40e99c8c037b0d924df3/FLAGbf8cc68f0 [2024-12-02 15:32:25,561 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/data/8b495596a/e5d5ca49d9fe40e99c8c037b0d924df3 [2024-12-02 15:32:25,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:32:25,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:32:25,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:32:25,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:32:25,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:32:25,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb4fdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25, skipping insertion in model container [2024-12-02 15:32:25,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:32:25,807 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_3644a8cd-3d42-49a8-9e21-3094c035736c/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i[30737,30750] [2024-12-02 15:32:25,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:32:25,827 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:32:25,862 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_3644a8cd-3d42-49a8-9e21-3094c035736c/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i[30737,30750] [2024-12-02 15:32:25,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:32:25,898 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:32:25,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25 WrapperNode [2024-12-02 15:32:25,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:32:25,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:32:25,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:32:25,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:32:25,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,926 INFO L138 Inliner]: procedures = 166, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-12-02 15:32:25,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:32:25,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:32:25,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:32:25,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:32:25,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,935 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,947 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]. [2024-12-02 15:32:25,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,952 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:32:25,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:32:25,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:32:25,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:32:25,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (1/1) ... [2024-12-02 15:32:25,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:32:25,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:32:25,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:32:25,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3644a8cd-3d42-49a8-9e21-3094c035736c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:32:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-12-02 15:32:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-12-02 15:32:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 15:32:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 15:32:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:32:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:32:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:32:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 15:32:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 15:32:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:32:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:32:26,013 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 15:32:26,102 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:32:26,104 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:32:26,212 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 15:32:26,212 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:32:26,303 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:32:26,304 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 15:32:26,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:26 BoogieIcfgContainer [2024-12-02 15:32:26,304 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:32:26,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:32:26,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:32:26,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:32:26,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:32:25" (1/3) ... [2024-12-02 15:32:26,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48626b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:26, skipping insertion in model container [2024-12-02 15:32:26,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:25" (2/3) ... [2024-12-02 15:32:26,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48626b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:26, skipping insertion in model container [2024-12-02 15:32:26,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:26" (3/3) ... [2024-12-02 15:32:26,311 INFO L128 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2024-12-02 15:32:26,323 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:32:26,325 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 39_rand_lock_p0_vs.i that has 2 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-12-02 15:32:26,325 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 15:32:26,363 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:32:26,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 19 transitions, 42 flow [2024-12-02 15:32:26,417 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-12-02 15:32:26,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:32:26,422 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 4. Compared 20 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. [2024-12-02 15:32:26,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 19 transitions, 42 flow [2024-12-02 15:32:26,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 19 transitions, 42 flow [2024-12-02 15:32:26,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:32:26,447 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;@230365fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:32:26,447 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-12-02 15:32:26,451 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:32:26,451 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-12-02 15:32:26,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:32:26,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:32:26,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:32:26,452 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:26,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:26,455 INFO L85 PathProgramCache]: Analyzing trace with hash 198185167, now seen corresponding path program 1 times [2024-12-02 15:32:26,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:26,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858897645] [2024-12-02 15:32:26,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:26,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:26,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858897645] [2024-12-02 15:32:26,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858897645] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:32:26,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:32:26,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 15:32:26,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296238759] [2024-12-02 15:32:26,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:32:26,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:32:26,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:26,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:32:26,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:32:26,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 19 [2024-12-02 15:32:26,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-12-02 15:32:26,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:32:26,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 19 [2024-12-02 15:32:26,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:32:26,726 INFO L124 PetriNetUnfolderBase]: 21/57 cut-off events. [2024-12-02 15:32:26,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:32:26,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 57 events. 21/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 12 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 100. Up to 35 conditions per place. [2024-12-02 15:32:26,727 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 13 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2024-12-02 15:32:26,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 70 flow [2024-12-02 15:32:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:32:26,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:32:26,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2024-12-02 15:32:26,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-12-02 15:32:26,742 INFO L175 Difference]: Start difference. First operand has 20 places, 19 transitions, 42 flow. Second operand 3 states and 28 transitions. [2024-12-02 15:32:26,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 70 flow [2024-12-02 15:32:26,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 18 transitions, 70 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 15:32:26,748 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 40 flow [2024-12-02 15:32:26,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2024-12-02 15:32:26,754 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2024-12-02 15:32:26,754 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 40 flow [2024-12-02 15:32:26,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-12-02 15:32:26,754 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:32:26,754 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 15:32:26,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:32:26,755 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:32:26,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1848769697, now seen corresponding path program 1 times [2024-12-02 15:32:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:26,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623659236] [2024-12-02 15:32:26,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:26,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:32:26,775 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:32:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:32:26,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:32:26,801 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:32:26,802 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-12-02 15:32:26,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-12-02 15:32:26,804 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-12-02 15:32:26,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:32:26,804 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 15:32:26,806 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:32:26,806 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 15:32:26,829 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:32:26,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 76 flow [2024-12-02 15:32:26,841 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-12-02 15:32:26,841 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 15:32:26,842 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 6. Compared 66 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. [2024-12-02 15:32:26,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 33 transitions, 76 flow [2024-12-02 15:32:26,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 33 transitions, 76 flow [2024-12-02 15:32:26,844 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:32:26,844 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;@230365fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:32:26,845 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 15:32:26,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:32:26,848 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-12-02 15:32:26,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:32:26,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:32:26,848 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:32:26,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 15:32:26,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash 229690141, now seen corresponding path program 1 times [2024-12-02 15:32:26,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:26,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580278551] [2024-12-02 15:32:26,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:26,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:26,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:26,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580278551] [2024-12-02 15:32:26,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580278551] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:32:26,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:32:26,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 15:32:26,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276511493] [2024-12-02 15:32:26,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:32:26,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:32:26,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:26,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:32:26,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:32:26,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-12-02 15:32:26,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-12-02 15:32:26,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:32:26,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-12-02 15:32:26,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:32:27,129 INFO L124 PetriNetUnfolderBase]: 525/911 cut-off events. [2024-12-02 15:32:27,130 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-12-02 15:32:27,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 911 events. 525/911 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3640 event pairs, 252 based on Foata normal form. 0/857 useless extension candidates. Maximal degree in co-relation 1262. Up to 451 conditions per place. [2024-12-02 15:32:27,137 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 39 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-12-02 15:32:27,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 193 flow [2024-12-02 15:32:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:32:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:32:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-12-02 15:32:27,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2024-12-02 15:32:27,139 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 76 flow. Second operand 3 states and 65 transitions. [2024-12-02 15:32:27,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 193 flow [2024-12-02 15:32:27,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 15:32:27,142 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 91 flow [2024-12-02 15:32:27,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-12-02 15:32:27,143 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-12-02 15:32:27,143 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 91 flow [2024-12-02 15:32:27,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-12-02 15:32:27,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:32:27,143 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-12-02 15:32:27,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:32:27,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-12-02 15:32:27,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash -948474822, now seen corresponding path program 1 times [2024-12-02 15:32:27,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:27,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512808093] [2024-12-02 15:32:27,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:27,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:32:27,159 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:32:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:32:27,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:32:27,171 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:32:27,171 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-12-02 15:32:27,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-12-02 15:32:27,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-12-02 15:32:27,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-12-02 15:32:27,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:32:27,172 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 15:32:27,172 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:32:27,172 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 15:32:27,203 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:32:27,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 112 flow [2024-12-02 15:32:27,215 INFO L124 PetriNetUnfolderBase]: 6/55 cut-off events. [2024-12-02 15:32:27,215 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-12-02 15:32:27,216 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 125 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. [2024-12-02 15:32:27,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 112 flow [2024-12-02 15:32:27,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 47 transitions, 112 flow [2024-12-02 15:32:27,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:32:27,219 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;@230365fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:32:27,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 15:32:27,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:32:27,221 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 15:32:27,222 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 15:32:27,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:32:27,222 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:32:27,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 15:32:27,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:27,224 INFO L85 PathProgramCache]: Analyzing trace with hash 274554969, now seen corresponding path program 1 times [2024-12-02 15:32:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:27,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828390839] [2024-12-02 15:32:27,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:27,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:27,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:27,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828390839] [2024-12-02 15:32:27,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828390839] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:32:27,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:32:27,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 15:32:27,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546383846] [2024-12-02 15:32:27,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:32:27,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:32:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:27,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:32:27,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:32:27,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 47 [2024-12-02 15:32:27,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-12-02 15:32:27,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:32:27,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 47 [2024-12-02 15:32:27,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:32:28,514 INFO L124 PetriNetUnfolderBase]: 9048/13148 cut-off events. [2024-12-02 15:32:28,514 INFO L125 PetriNetUnfolderBase]: For 718/718 co-relation queries the response was YES. [2024-12-02 15:32:28,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26250 conditions, 13148 events. 9048/13148 cut-off events. For 718/718 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 70035 event pairs, 3549 based on Foata normal form. 0/12344 useless extension candidates. Maximal degree in co-relation 6698. Up to 8869 conditions per place. [2024-12-02 15:32:28,610 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 57 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-12-02 15:32:28,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 288 flow [2024-12-02 15:32:28,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:32:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:32:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-12-02 15:32:28,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-12-02 15:32:28,611 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 112 flow. Second operand 3 states and 93 transitions. [2024-12-02 15:32:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 288 flow [2024-12-02 15:32:28,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 284 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-12-02 15:32:28,614 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 132 flow [2024-12-02 15:32:28,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-12-02 15:32:28,615 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2024-12-02 15:32:28,615 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 132 flow [2024-12-02 15:32:28,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2024-12-02 15:32:28,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:32:28,616 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-12-02 15:32:28,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:32:28,616 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 15:32:28,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash 653543584, now seen corresponding path program 1 times [2024-12-02 15:32:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:28,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787722207] [2024-12-02 15:32:28,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:32:28,628 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:32:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:32:28,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:32:28,640 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:32:28,640 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-12-02 15:32:28,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-12-02 15:32:28,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-12-02 15:32:28,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-12-02 15:32:28,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-12-02 15:32:28,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:32:28,641 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 15:32:28,641 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:32:28,641 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 15:32:28,678 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:32:28,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 61 transitions, 150 flow [2024-12-02 15:32:28,687 INFO L124 PetriNetUnfolderBase]: 8/72 cut-off events. [2024-12-02 15:32:28,687 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-12-02 15:32:28,687 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 7. Compared 184 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. [2024-12-02 15:32:28,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 61 transitions, 150 flow [2024-12-02 15:32:28,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 61 transitions, 150 flow [2024-12-02 15:32:28,689 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:32:28,690 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;@230365fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:32:28,690 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 15:32:28,691 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:32:28,691 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 15:32:28,691 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 15:32:28,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:32:28,691 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:32:28,692 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-12-02 15:32:28,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash 332780483, now seen corresponding path program 1 times [2024-12-02 15:32:28,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:28,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383337392] [2024-12-02 15:32:28,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:28,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:28,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383337392] [2024-12-02 15:32:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383337392] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:32:28,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:32:28,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 15:32:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484248668] [2024-12-02 15:32:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:32:28,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:32:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:28,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:32:28,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:32:28,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 61 [2024-12-02 15:32:28,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-12-02 15:32:28,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:32:28,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 61 [2024-12-02 15:32:28,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 15:32:38,540 INFO L124 PetriNetUnfolderBase]: 138114/182648 cut-off events. [2024-12-02 15:32:38,540 INFO L125 PetriNetUnfolderBase]: For 13073/13073 co-relation queries the response was YES. [2024-12-02 15:32:38,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367995 conditions, 182648 events. 138114/182648 cut-off events. For 13073/13073 co-relation queries the response was YES. Maximal size of possible extension queue 3636. Compared 1115928 event pairs, 45867 based on Foata normal form. 0/170309 useless extension candidates. Maximal degree in co-relation 33284. Up to 145462 conditions per place. [2024-12-02 15:32:39,147 INFO L140 encePairwiseOnDemand]: 47/61 looper letters, 75 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2024-12-02 15:32:39,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 387 flow [2024-12-02 15:32:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:32:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 15:32:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-12-02 15:32:39,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612021857923497 [2024-12-02 15:32:39,149 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 150 flow. Second operand 3 states and 121 transitions. [2024-12-02 15:32:39,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 387 flow [2024-12-02 15:32:39,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 375 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-12-02 15:32:39,158 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 173 flow [2024-12-02 15:32:39,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-12-02 15:32:39,159 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-12-02 15:32:39,159 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 173 flow [2024-12-02 15:32:39,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-12-02 15:32:39,159 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:32:39,159 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-12-02 15:32:39,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:32:39,159 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-12-02 15:32:39,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash 180170079, now seen corresponding path program 1 times [2024-12-02 15:32:39,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:39,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752689764] [2024-12-02 15:32:39,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:32:39,171 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 15:32:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 15:32:39,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 15:32:39,183 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 15:32:39,183 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-12-02 15:32:39,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-12-02 15:32:39,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-12-02 15:32:39,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-12-02 15:32:39,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-12-02 15:32:39,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-12-02 15:32:39,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:32:39,184 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 15:32:39,185 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 15:32:39,185 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-12-02 15:32:39,226 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 15:32:39,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 75 transitions, 190 flow [2024-12-02 15:32:39,235 INFO L124 PetriNetUnfolderBase]: 10/89 cut-off events. [2024-12-02 15:32:39,235 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-12-02 15:32:39,236 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 7. Compared 228 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. [2024-12-02 15:32:39,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 75 transitions, 190 flow [2024-12-02 15:32:39,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 75 transitions, 190 flow [2024-12-02 15:32:39,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:32:39,239 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;@230365fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:32:39,239 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 15:32:39,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 15:32:39,240 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-12-02 15:32:39,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 15:32:39,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 15:32:39,240 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 15:32:39,240 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-12-02 15:32:39,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:32:39,241 INFO L85 PathProgramCache]: Analyzing trace with hash 404365435, now seen corresponding path program 1 times [2024-12-02 15:32:39,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:32:39,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221515228] [2024-12-02 15:32:39,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:32:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:32:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:32:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:32:39,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:32:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221515228] [2024-12-02 15:32:39,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221515228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:32:39,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:32:39,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 15:32:39,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087802208] [2024-12-02 15:32:39,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:32:39,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:32:39,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:32:39,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:32:39,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:32:39,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 75 [2024-12-02 15:32:39,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-12-02 15:32:39,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 15:32:39,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 75 [2024-12-02 15:32:39,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand