./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:19:19,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:19:19,092 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:19:19,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:19:19,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:19:19,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:19:19,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:19:19,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:19:19,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:19:19,119 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:19:19,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:19:19,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:19:19,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:19:19,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:19:19,120 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:19:19,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:19:19,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:19:19,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:19:19,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:19:19,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:19:19,121 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:19:19,121 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:19:19,122 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:19:19,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:19:19,122 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:19:19,122 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:19:19,122 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:19:19,122 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:19:19,122 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:19:19,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:19:19,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:19:19,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:19:19,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:19:19,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:19:19,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:19:19,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:19:19,123 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:19:19,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:19:19,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:19:19,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:19:19,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:19:19,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:19:19,124 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_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2024-11-13 14:19:19,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:19:19,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:19:19,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:19:19,422 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:19:19,422 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:19:19,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i Unable to find full path for "g++" [2024-11-13 14:19:21,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:19:21,507 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:19:21,508 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-11-13 14:19:21,526 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/data/2ecdeaf8a/457ad0f1dbaf478290bb4e0e03b907c0/FLAG25a619fc0 [2024-11-13 14:19:21,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/data/2ecdeaf8a/457ad0f1dbaf478290bb4e0e03b907c0 [2024-11-13 14:19:21,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:19:21,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:19:21,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:21,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:19:21,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:19:21,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:21" (1/1) ... [2024-11-13 14:19:21,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16dbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:21, skipping insertion in model container [2024-11-13 14:19:21,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:21" (1/1) ... [2024-11-13 14:19:21,623 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:19:22,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:22,091 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:19:22,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:22,175 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:19:22,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22 WrapperNode [2024-11-13 14:19:22,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:22,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:22,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:19:22,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:19:22,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,231 INFO L138 Inliner]: procedures = 172, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 96 [2024-11-13 14:19:22,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:22,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:19:22,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:19:22,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:19:22,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,262 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 14:19:22,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:19:22,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:19:22,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:19:22,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:19:22,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (1/1) ... [2024-11-13 14:19:22,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:19:22,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:22,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:19:22,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:19:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 14:19:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:19:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-11-13 14:19:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-11-13 14:19:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:19:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 14:19:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:19:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:19:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-11-13 14:19:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-11-13 14:19:22,350 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:19:22,480 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:19:22,482 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:19:22,641 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:19:22,641 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:19:22,747 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:19:22,747 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 14:19:22,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:22 BoogieIcfgContainer [2024-11-13 14:19:22,748 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:19:22,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:19:22,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:19:22,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:19:22,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:19:21" (1/3) ... [2024-11-13 14:19:22,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bff0957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:22, skipping insertion in model container [2024-11-13 14:19:22,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:22" (2/3) ... [2024-11-13 14:19:22,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bff0957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:22, skipping insertion in model container [2024-11-13 14:19:22,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:22" (3/3) ... [2024-11-13 14:19:22,757 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2024-11-13 14:19:22,772 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:19:22,774 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG read_write_lock-2.i that has 3 procedures, 38 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-13 14:19:22,774 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:19:22,841 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 14:19:22,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-13 14:19:22,953 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-13 14:19:22,958 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 14:19:22,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-13 14:19:22,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-13 14:19:22,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 138 flow [2024-11-13 14:19:22,983 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:19:22,998 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=None, 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;@748502b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:19:22,998 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-13 14:19:23,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:19:23,023 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-11-13 14:19:23,023 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:19:23,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:23,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:23,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:23,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:23,031 INFO L85 PathProgramCache]: Analyzing trace with hash 636066479, now seen corresponding path program 1 times [2024-11-13 14:19:23,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:23,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733341342] [2024-11-13 14:19:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:23,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:23,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:23,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733341342] [2024-11-13 14:19:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733341342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:23,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:23,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:19:23,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776358517] [2024-11-13 14:19:23,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:23,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:19:23,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:23,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:19:23,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:23,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 62 [2024-11-13 14:19:23,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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) [2024-11-13 14:19:23,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:19:23,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 62 [2024-11-13 14:19:23,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:19:26,828 INFO L124 PetriNetUnfolderBase]: 14102/24421 cut-off events. [2024-11-13 14:19:26,828 INFO L125 PetriNetUnfolderBase]: For 2090/2090 co-relation queries the response was YES. [2024-11-13 14:19:26,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45384 conditions, 24421 events. 14102/24421 cut-off events. For 2090/2090 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 210247 event pairs, 1527 based on Foata normal form. 2538/26333 useless extension candidates. Maximal degree in co-relation 40085. Up to 6266 conditions per place. [2024-11-13 14:19:27,014 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 179 selfloop transitions, 37 changer transitions 0/233 dead transitions. [2024-11-13 14:19:27,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 233 transitions, 1015 flow [2024-11-13 14:19:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:19:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:19:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 544 transitions. [2024-11-13 14:19:27,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.674937965260546 [2024-11-13 14:19:27,035 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 138 flow. Second operand 13 states and 544 transitions. [2024-11-13 14:19:27,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 233 transitions, 1015 flow [2024-11-13 14:19:27,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 233 transitions, 937 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 14:19:27,108 INFO L231 Difference]: Finished difference. Result has 76 places, 90 transitions, 353 flow [2024-11-13 14:19:27,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=353, PETRI_PLACES=76, PETRI_TRANSITIONS=90} [2024-11-13 14:19:27,113 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2024-11-13 14:19:27,114 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 90 transitions, 353 flow [2024-11-13 14:19:27,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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) [2024-11-13 14:19:27,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:27,114 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:27,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:19:27,114 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:27,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash 300194929, now seen corresponding path program 1 times [2024-11-13 14:19:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250622162] [2024-11-13 14:19:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:27,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250622162] [2024-11-13 14:19:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250622162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:27,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:27,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:19:27,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203882665] [2024-11-13 14:19:27,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:27,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:27,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:27,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:27,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:27,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 62 [2024-11-13 14:19:27,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 90 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-13 14:19:27,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:19:27,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 62 [2024-11-13 14:19:27,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:19:28,871 INFO L124 PetriNetUnfolderBase]: 6834/13886 cut-off events. [2024-11-13 14:19:28,871 INFO L125 PetriNetUnfolderBase]: For 4976/5295 co-relation queries the response was YES. [2024-11-13 14:19:28,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28294 conditions, 13886 events. 6834/13886 cut-off events. For 4976/5295 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 134465 event pairs, 2739 based on Foata normal form. 717/13669 useless extension candidates. Maximal degree in co-relation 22139. Up to 5307 conditions per place. [2024-11-13 14:19:29,006 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 40 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2024-11-13 14:19:29,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 486 flow [2024-11-13 14:19:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:19:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:19:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-13 14:19:29,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2024-11-13 14:19:29,012 INFO L175 Difference]: Start difference. First operand has 76 places, 90 transitions, 353 flow. Second operand 3 states and 138 transitions. [2024-11-13 14:19:29,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 486 flow [2024-11-13 14:19:29,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 107 transitions, 486 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:19:29,171 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 369 flow [2024-11-13 14:19:29,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-11-13 14:19:29,174 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-11-13 14:19:29,174 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 369 flow [2024-11-13 14:19:29,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-13 14:19:29,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:29,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:29,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:19:29,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:29,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1645647337, now seen corresponding path program 2 times [2024-11-13 14:19:29,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:29,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170973104] [2024-11-13 14:19:29,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:29,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:29,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:29,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170973104] [2024-11-13 14:19:29,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170973104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:29,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:29,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:19:29,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553814585] [2024-11-13 14:19:29,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:29,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:19:29,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:19:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:19:29,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 62 [2024-11-13 14:19:29,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2024-11-13 14:19:29,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:19:29,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 62 [2024-11-13 14:19:29,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:19:30,766 INFO L124 PetriNetUnfolderBase]: 6316/12591 cut-off events. [2024-11-13 14:19:30,766 INFO L125 PetriNetUnfolderBase]: For 6176/6368 co-relation queries the response was YES. [2024-11-13 14:19:30,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27257 conditions, 12591 events. 6316/12591 cut-off events. For 6176/6368 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 113465 event pairs, 1680 based on Foata normal form. 318/12552 useless extension candidates. Maximal degree in co-relation 24216. Up to 3792 conditions per place. [2024-11-13 14:19:30,848 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 61 selfloop transitions, 9 changer transitions 0/133 dead transitions. [2024-11-13 14:19:30,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 133 transitions, 632 flow [2024-11-13 14:19:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:19:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:19:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-13 14:19:30,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7741935483870968 [2024-11-13 14:19:30,850 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 369 flow. Second operand 4 states and 192 transitions. [2024-11-13 14:19:30,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 133 transitions, 632 flow [2024-11-13 14:19:30,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 133 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:19:30,969 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 435 flow [2024-11-13 14:19:30,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2024-11-13 14:19:30,971 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-11-13 14:19:30,972 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 435 flow [2024-11-13 14:19:30,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2024-11-13 14:19:30,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:30,973 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:30,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:19:30,973 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:30,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:30,974 INFO L85 PathProgramCache]: Analyzing trace with hash -763757256, now seen corresponding path program 1 times [2024-11-13 14:19:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481563992] [2024-11-13 14:19:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:31,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:31,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481563992] [2024-11-13 14:19:31,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481563992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:31,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:19:31,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047405461] [2024-11-13 14:19:31,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:31,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:19:31,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:19:31,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:31,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 62 [2024-11-13 14:19:31,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-11-13 14:19:31,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:19:31,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 62 [2024-11-13 14:19:31,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:19:33,566 INFO L124 PetriNetUnfolderBase]: 13472/22783 cut-off events. [2024-11-13 14:19:33,567 INFO L125 PetriNetUnfolderBase]: For 21011/21745 co-relation queries the response was YES. [2024-11-13 14:19:33,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56662 conditions, 22783 events. 13472/22783 cut-off events. For 21011/21745 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 182277 event pairs, 2029 based on Foata normal form. 460/22855 useless extension candidates. Maximal degree in co-relation 52344. Up to 5101 conditions per place. [2024-11-13 14:19:33,707 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 201 selfloop transitions, 70 changer transitions 0/301 dead transitions. [2024-11-13 14:19:33,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 301 transitions, 1810 flow [2024-11-13 14:19:33,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:19:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:19:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 504 transitions. [2024-11-13 14:19:33,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6253101736972705 [2024-11-13 14:19:33,709 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 435 flow. Second operand 13 states and 504 transitions. [2024-11-13 14:19:33,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 301 transitions, 1810 flow [2024-11-13 14:19:34,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 301 transitions, 1810 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:19:34,079 INFO L231 Difference]: Finished difference. Result has 105 places, 157 transitions, 1038 flow [2024-11-13 14:19:34,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1038, PETRI_PLACES=105, PETRI_TRANSITIONS=157} [2024-11-13 14:19:34,080 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 39 predicate places. [2024-11-13 14:19:34,080 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 157 transitions, 1038 flow [2024-11-13 14:19:34,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-11-13 14:19:34,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:34,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:34,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:19:34,081 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:34,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:34,081 INFO L85 PathProgramCache]: Analyzing trace with hash -911065372, now seen corresponding path program 1 times [2024-11-13 14:19:34,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:34,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144572296] [2024-11-13 14:19:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:34,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:34,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:34,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144572296] [2024-11-13 14:19:34,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144572296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:34,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:34,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:19:34,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063625474] [2024-11-13 14:19:34,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:34,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:19:34,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:19:34,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:34,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 62 [2024-11-13 14:19:34,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 157 transitions, 1038 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-13 14:19:34,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:19:34,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 62 [2024-11-13 14:19:34,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:19:37,065 INFO L124 PetriNetUnfolderBase]: 14310/24144 cut-off events. [2024-11-13 14:19:37,065 INFO L125 PetriNetUnfolderBase]: For 36560/36909 co-relation queries the response was YES. [2024-11-13 14:19:37,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70727 conditions, 24144 events. 14310/24144 cut-off events. For 36560/36909 co-relation queries the response was YES. Maximal size of possible extension queue 1226. Compared 194157 event pairs, 3049 based on Foata normal form. 444/24353 useless extension candidates. Maximal degree in co-relation 66403. Up to 7170 conditions per place. [2024-11-13 14:19:37,283 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 198 selfloop transitions, 87 changer transitions 0/315 dead transitions. [2024-11-13 14:19:37,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 315 transitions, 2346 flow [2024-11-13 14:19:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:19:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:19:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 484 transitions. [2024-11-13 14:19:37,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6004962779156328 [2024-11-13 14:19:37,286 INFO L175 Difference]: Start difference. First operand has 105 places, 157 transitions, 1038 flow. Second operand 13 states and 484 transitions. [2024-11-13 14:19:37,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 315 transitions, 2346 flow [2024-11-13 14:19:38,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 315 transitions, 2344 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 14:19:38,315 INFO L231 Difference]: Finished difference. Result has 121 places, 186 transitions, 1516 flow [2024-11-13 14:19:38,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1516, PETRI_PLACES=121, PETRI_TRANSITIONS=186} [2024-11-13 14:19:38,317 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 55 predicate places. [2024-11-13 14:19:38,317 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 186 transitions, 1516 flow [2024-11-13 14:19:38,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-13 14:19:38,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:38,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:38,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:19:38,318 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:38,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1825893142, now seen corresponding path program 1 times [2024-11-13 14:19:38,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:38,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365532816] [2024-11-13 14:19:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:38,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:38,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:38,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365532816] [2024-11-13 14:19:38,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365532816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:38,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:38,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:19:38,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82069490] [2024-11-13 14:19:38,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:38,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:19:38,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:38,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:19:38,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:38,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 62 [2024-11-13 14:19:38,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 186 transitions, 1516 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-13 14:19:38,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:19:38,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 62 [2024-11-13 14:19:38,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:19:41,822 INFO L124 PetriNetUnfolderBase]: 15074/25341 cut-off events. [2024-11-13 14:19:41,823 INFO L125 PetriNetUnfolderBase]: For 55380/55972 co-relation queries the response was YES. [2024-11-13 14:19:41,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78221 conditions, 25341 events. 15074/25341 cut-off events. For 55380/55972 co-relation queries the response was YES. Maximal size of possible extension queue 1278. Compared 202802 event pairs, 2998 based on Foata normal form. 648/25708 useless extension candidates. Maximal degree in co-relation 74131. Up to 7239 conditions per place. [2024-11-13 14:19:41,999 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 212 selfloop transitions, 94 changer transitions 0/350 dead transitions. [2024-11-13 14:19:41,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 350 transitions, 2914 flow [2024-11-13 14:19:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:19:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:19:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 486 transitions. [2024-11-13 14:19:42,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6029776674937966 [2024-11-13 14:19:42,002 INFO L175 Difference]: Start difference. First operand has 121 places, 186 transitions, 1516 flow. Second operand 13 states and 486 transitions. [2024-11-13 14:19:42,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 350 transitions, 2914 flow [2024-11-13 14:19:43,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 350 transitions, 2900 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-13 14:19:43,195 INFO L231 Difference]: Finished difference. Result has 136 places, 215 transitions, 2010 flow [2024-11-13 14:19:43,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2010, PETRI_PLACES=136, PETRI_TRANSITIONS=215} [2024-11-13 14:19:43,196 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 70 predicate places. [2024-11-13 14:19:43,196 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 215 transitions, 2010 flow [2024-11-13 14:19:43,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-13 14:19:43,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:43,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:43,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:19:43,196 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:43,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash -700195909, now seen corresponding path program 1 times [2024-11-13 14:19:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:43,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512336824] [2024-11-13 14:19:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:19:43,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:19:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:19:43,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:19:43,291 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:19:43,292 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2024-11-13 14:19:43,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-13 14:19:43,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-13 14:19:43,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-13 14:19:43,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-11-13 14:19:43,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-11-13 14:19:43,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-11-13 14:19:43,294 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-13 14:19:43,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:19:43,295 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-11-13 14:19:43,365 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 14:19:43,365 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:19:43,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:19:43 BasicIcfg [2024-11-13 14:19:43,373 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:19:43,374 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:19:43,374 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:19:43,374 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:19:43,375 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:22" (3/4) ... [2024-11-13 14:19:43,379 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 14:19:43,380 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:19:43,380 INFO L158 Benchmark]: Toolchain (without parser) took 21823.67ms. Allocated memory was 142.6MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 116.2MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 917.3MB. Max. memory is 16.1GB. [2024-11-13 14:19:43,381 INFO L158 Benchmark]: CDTParser took 1.24ms. Allocated memory is still 117.4MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:19:43,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.22ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 96.3MB in the end (delta: 19.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:19:43,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.87ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 94.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:19:43,381 INFO L158 Benchmark]: Boogie Preprocessor took 48.79ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 93.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:19:43,382 INFO L158 Benchmark]: RCFGBuilder took 465.68ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 72.7MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:19:43,383 INFO L158 Benchmark]: TraceAbstraction took 20623.63ms. Allocated memory was 142.6MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 72.2MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 883.7MB. Max. memory is 16.1GB. [2024-11-13 14:19:43,384 INFO L158 Benchmark]: Witness Printer took 6.11ms. Allocated memory is still 5.9GB. Free memory was 5.0GB in the beginning and 5.0GB in the end (delta: 93.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:19:43,387 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24ms. Allocated memory is still 117.4MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.22ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 96.3MB in the end (delta: 19.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.87ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 94.6MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.79ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 93.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 465.68ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 72.7MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20623.63ms. Allocated memory was 142.6MB in the beginning and 5.9GB in the end (delta: 5.8GB). Free memory was 72.2MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 883.7MB. Max. memory is 16.1GB. * Witness Printer took 6.11ms. Allocated memory is still 5.9GB. Free memory was 5.0GB in the beginning and 5.0GB in the end (delta: 93.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 16. Possible FailurePath: [L704] 0 int w=0, r=0, x, y; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, t1=-3, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, t1=-3, t2=-2, w=0, x=0, y=0] [L724] 2 int l; VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=0, t1=-3, t2=-2, t3=-1, w=0, x=0, y=0] [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [\old(arg)={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [\old(arg)={0:0}, arg={0:0}, l=0, ly=0, r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L740] 2 l = r-1 VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, t1=-3, t2=-2, t3=-1, t4=0, w=0, x=0, y=0] [L724] 4 int l; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L743] 2 r = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, x=0, y=0] [L714] CALL 1 __VERIFIER_atomic_take_write_lock() [L706] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L706] RET 1 assume_abort_if_not(w==0 && r==0) [L707] 1 w = 1 [L714] RET 1 __VERIFIER_atomic_take_write_lock() [L727] 4 l = x VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L730] 4 y = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L733] 4 int ly = y; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L716] 1 x = 3 VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L736] 4 int lx = x; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=3, ly=0, r=0, w=1, x=3, y=0] [L738] COND TRUE 4 !(ly == lx) [L738] CALL 4 reach_error() [L16] COND FALSE 4 !(0) VAL [r=0, w=1, x=3, y=0] [L16] 4 __assert_fail ("0", "read_write_lock-2.c", 7, __extension__ __PRETTY_FUNCTION__) VAL [r=0, w=1, x=3, y=0] - UnprovableResult [Line: 747]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 84 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 19.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 760 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 683 mSDsluCounter, 308 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 193 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1870 IncrementalHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 115 mSDtfsCounter, 1870 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2010occurred in iteration=6, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 14:19:43,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:19:46,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:19:46,309 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 14:19:46,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:19:46,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:19:46,358 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:19:46,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:19:46,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:19:46,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:19:46,361 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:19:46,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:19:46,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:19:46,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:19:46,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:19:46,363 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:19:46,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:19:46,363 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:19:46,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:19:46,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:19:46,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:19:46,364 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:19:46,364 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:19:46,364 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:19:46,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:19:46,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:19:46,365 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:19:46,365 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:19:46,365 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:19:46,365 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:19:46,365 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:19:46,365 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:19:46,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:19:46,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:19:46,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:19:46,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:19:46,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:19:46,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:19:46,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:19:46,367 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:19:46,367 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:19:46,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:19:46,368 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:19:46,368 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:19:46,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:19:46,368 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_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2024-11-13 14:19:46,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:19:46,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:19:46,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:19:46,697 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:19:46,697 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:19:46,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i Unable to find full path for "g++" [2024-11-13 14:19:48,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:19:49,000 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:19:49,000 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2024-11-13 14:19:49,016 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/data/f4bc821a3/38b5f5cd29184ee1a1e4b5077d387928/FLAGa44033b29 [2024-11-13 14:19:49,037 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/data/f4bc821a3/38b5f5cd29184ee1a1e4b5077d387928 [2024-11-13 14:19:49,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:19:49,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:19:49,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:49,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:19:49,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:19:49,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41133fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49, skipping insertion in model container [2024-11-13 14:19:49,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:19:49,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:49,445 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:19:49,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:49,547 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:19:49,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49 WrapperNode [2024-11-13 14:19:49,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:49,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:49,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:19:49,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:19:49,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,608 INFO L138 Inliner]: procedures = 173, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 97 [2024-11-13 14:19:49,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:49,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:19:49,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:19:49,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:19:49,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,647 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 14:19:49,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:19:49,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:19:49,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:19:49,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:19:49,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (1/1) ... [2024-11-13 14:19:49,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:19:49,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:49,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:19:49,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:19:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 14:19:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:19:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-11-13 14:19:49,746 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-11-13 14:19:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:19:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 14:19:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:19:49,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:19:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-11-13 14:19:49,747 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-11-13 14:19:49,749 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:19:49,941 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:19:49,943 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:19:50,188 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:19:50,188 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:19:50,424 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:19:50,425 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 14:19:50,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:50 BoogieIcfgContainer [2024-11-13 14:19:50,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:19:50,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:19:50,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:19:50,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:19:50,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:19:49" (1/3) ... [2024-11-13 14:19:50,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44513dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:50, skipping insertion in model container [2024-11-13 14:19:50,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:49" (2/3) ... [2024-11-13 14:19:50,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44513dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:50, skipping insertion in model container [2024-11-13 14:19:50,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:50" (3/3) ... [2024-11-13 14:19:50,437 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2024-11-13 14:19:50,452 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:19:50,455 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG read_write_lock-2.i that has 3 procedures, 38 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-13 14:19:50,455 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:19:50,549 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 14:19:50,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-13 14:19:50,644 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-13 14:19:50,648 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 14:19:50,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-13 14:19:50,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-13 14:19:50,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 138 flow [2024-11-13 14:19:50,668 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:19:50,687 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=None, 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;@3e3ababa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:19:50,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-13 14:19:50,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:19:50,709 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-11-13 14:19:50,710 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:19:50,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:50,710 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:50,711 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:50,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:50,717 INFO L85 PathProgramCache]: Analyzing trace with hash 398639909, now seen corresponding path program 1 times [2024-11-13 14:19:50,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:19:50,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675684961] [2024-11-13 14:19:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:50,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:50,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:50,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:50,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:19:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:50,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:19:50,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:50,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:19:50,994 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:19:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675684961] [2024-11-13 14:19:50,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675684961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:50,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:50,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:19:50,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401486212] [2024-11-13 14:19:51,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:51,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:19:51,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:19:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:19:51,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:51,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 62 [2024-11-13 14:19:51,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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) [2024-11-13 14:19:51,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:19:51,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 62 [2024-11-13 14:19:51,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:19:54,641 INFO L124 PetriNetUnfolderBase]: 14102/24413 cut-off events. [2024-11-13 14:19:54,641 INFO L125 PetriNetUnfolderBase]: For 2090/2090 co-relation queries the response was YES. [2024-11-13 14:19:54,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45376 conditions, 24413 events. 14102/24413 cut-off events. For 2090/2090 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 210051 event pairs, 1535 based on Foata normal form. 2538/26328 useless extension candidates. Maximal degree in co-relation 40077. Up to 6266 conditions per place. [2024-11-13 14:19:54,813 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 179 selfloop transitions, 37 changer transitions 0/233 dead transitions. [2024-11-13 14:19:54,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 233 transitions, 1015 flow [2024-11-13 14:19:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:19:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:19:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 544 transitions. [2024-11-13 14:19:54,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.674937965260546 [2024-11-13 14:19:54,830 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 138 flow. Second operand 13 states and 544 transitions. [2024-11-13 14:19:54,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 233 transitions, 1015 flow [2024-11-13 14:19:54,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 233 transitions, 937 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 14:19:54,867 INFO L231 Difference]: Finished difference. Result has 76 places, 90 transitions, 353 flow [2024-11-13 14:19:54,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=353, PETRI_PLACES=76, PETRI_TRANSITIONS=90} [2024-11-13 14:19:54,873 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2024-11-13 14:19:54,873 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 90 transitions, 353 flow [2024-11-13 14:19:54,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 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) [2024-11-13 14:19:54,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:54,874 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:54,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 14:19:55,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:55,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:55,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:55,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1322923133, now seen corresponding path program 1 times [2024-11-13 14:19:55,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:19:55,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512662988] [2024-11-13 14:19:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:55,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:55,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:55,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:55,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:19:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:55,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:19:55,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:55,216 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:19:55,216 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:19:55,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512662988] [2024-11-13 14:19:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512662988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:55,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:55,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:19:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676282959] [2024-11-13 14:19:55,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:55,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:55,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:19:55,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:55,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:55,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 62 [2024-11-13 14:19:55,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 90 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-13 14:19:55,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:19:55,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 62 [2024-11-13 14:19:55,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:19:56,763 INFO L124 PetriNetUnfolderBase]: 6853/13824 cut-off events. [2024-11-13 14:19:56,763 INFO L125 PetriNetUnfolderBase]: For 4754/5073 co-relation queries the response was YES. [2024-11-13 14:19:56,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28252 conditions, 13824 events. 6853/13824 cut-off events. For 4754/5073 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 133157 event pairs, 2733 based on Foata normal form. 709/13627 useless extension candidates. Maximal degree in co-relation 22097. Up to 5355 conditions per place. [2024-11-13 14:19:56,895 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 40 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2024-11-13 14:19:56,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 486 flow [2024-11-13 14:19:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:19:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:19:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-13 14:19:56,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2024-11-13 14:19:56,900 INFO L175 Difference]: Start difference. First operand has 76 places, 90 transitions, 353 flow. Second operand 3 states and 138 transitions. [2024-11-13 14:19:56,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 486 flow [2024-11-13 14:19:57,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 107 transitions, 486 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:19:57,077 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 369 flow [2024-11-13 14:19:57,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-11-13 14:19:57,078 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-11-13 14:19:57,078 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 369 flow [2024-11-13 14:19:57,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-13 14:19:57,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:57,079 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:57,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:19:57,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:57,279 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:57,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1792466541, now seen corresponding path program 2 times [2024-11-13 14:19:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:19:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278587673] [2024-11-13 14:19:57,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:19:57,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:57,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:57,283 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:57,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:19:57,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:19:57,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:19:57,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:19:57,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:57,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:19:57,410 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:19:57,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278587673] [2024-11-13 14:19:57,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278587673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:57,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:57,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:19:57,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140215441] [2024-11-13 14:19:57,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:57,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:19:57,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:19:57,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:19:57,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:19:57,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 62 [2024-11-13 14:19:57,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2024-11-13 14:19:57,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:19:57,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 62 [2024-11-13 14:19:57,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:19:59,343 INFO L124 PetriNetUnfolderBase]: 10042/19609 cut-off events. [2024-11-13 14:19:59,344 INFO L125 PetriNetUnfolderBase]: For 9818/10163 co-relation queries the response was YES. [2024-11-13 14:19:59,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42115 conditions, 19609 events. 10042/19609 cut-off events. For 9818/10163 co-relation queries the response was YES. Maximal size of possible extension queue 1413. Compared 191525 event pairs, 3002 based on Foata normal form. 273/18856 useless extension candidates. Maximal degree in co-relation 34821. Up to 7305 conditions per place. [2024-11-13 14:19:59,474 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 58 selfloop transitions, 11 changer transitions 0/132 dead transitions. [2024-11-13 14:19:59,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 622 flow [2024-11-13 14:19:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:19:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 14:19:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-13 14:19:59,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7701612903225806 [2024-11-13 14:19:59,476 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 369 flow. Second operand 4 states and 191 transitions. [2024-11-13 14:19:59,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 622 flow [2024-11-13 14:19:59,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:19:59,768 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 444 flow [2024-11-13 14:19:59,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=444, PETRI_PLACES=82, PETRI_TRANSITIONS=100} [2024-11-13 14:19:59,769 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-11-13 14:19:59,769 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 444 flow [2024-11-13 14:19:59,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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) [2024-11-13 14:19:59,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:19:59,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:59,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:19:59,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:59,971 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:19:59,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1308458934, now seen corresponding path program 1 times [2024-11-13 14:19:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:19:59,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517853441] [2024-11-13 14:19:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:59,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:59,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:59,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:20:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:00,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:20:00,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:00,278 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:00,279 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517853441] [2024-11-13 14:20:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517853441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:00,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:00,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:20:00,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359544901] [2024-11-13 14:20:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:00,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:20:00,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:00,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:20:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:00,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 62 [2024-11-13 14:20:00,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-11-13 14:20:00,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:20:00,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 62 [2024-11-13 14:20:00,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:20:05,928 INFO L124 PetriNetUnfolderBase]: 39831/66882 cut-off events. [2024-11-13 14:20:05,928 INFO L125 PetriNetUnfolderBase]: For 60521/62209 co-relation queries the response was YES. [2024-11-13 14:20:06,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166610 conditions, 66882 events. 39831/66882 cut-off events. For 60521/62209 co-relation queries the response was YES. Maximal size of possible extension queue 4079. Compared 638284 event pairs, 5836 based on Foata normal form. 1154/66067 useless extension candidates. Maximal degree in co-relation 138036. Up to 14971 conditions per place. [2024-11-13 14:20:06,331 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 251 selfloop transitions, 153 changer transitions 0/434 dead transitions. [2024-11-13 14:20:06,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 434 transitions, 2802 flow [2024-11-13 14:20:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:20:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:20:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 510 transitions. [2024-11-13 14:20:06,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6327543424317618 [2024-11-13 14:20:06,333 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 444 flow. Second operand 13 states and 510 transitions. [2024-11-13 14:20:06,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 434 transitions, 2802 flow [2024-11-13 14:20:10,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 434 transitions, 2784 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-13 14:20:10,169 INFO L231 Difference]: Finished difference. Result has 102 places, 275 transitions, 2009 flow [2024-11-13 14:20:10,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2009, PETRI_PLACES=102, PETRI_TRANSITIONS=275} [2024-11-13 14:20:10,170 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 36 predicate places. [2024-11-13 14:20:10,171 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 275 transitions, 2009 flow [2024-11-13 14:20:10,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-11-13 14:20:10,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:20:10,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:10,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:20:10,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:10,375 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:20:10,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash -138968134, now seen corresponding path program 1 times [2024-11-13 14:20:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:10,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640404837] [2024-11-13 14:20:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:10,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:10,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:10,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:10,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:20:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:10,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:20:10,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:10,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:10,509 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:10,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640404837] [2024-11-13 14:20:10,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640404837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:10,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:10,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:20:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133210158] [2024-11-13 14:20:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:10,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:20:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:20:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:10,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 62 [2024-11-13 14:20:10,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 275 transitions, 2009 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-13 14:20:10,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:20:10,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 62 [2024-11-13 14:20:10,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:20:17,942 INFO L124 PetriNetUnfolderBase]: 44162/73397 cut-off events. [2024-11-13 14:20:17,942 INFO L125 PetriNetUnfolderBase]: For 114943/116223 co-relation queries the response was YES. [2024-11-13 14:20:18,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219204 conditions, 73397 events. 44162/73397 cut-off events. For 114943/116223 co-relation queries the response was YES. Maximal size of possible extension queue 4404. Compared 700880 event pairs, 7853 based on Foata normal form. 1478/73757 useless extension candidates. Maximal degree in co-relation 189967. Up to 21084 conditions per place. [2024-11-13 14:20:18,401 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 280 selfloop transitions, 223 changer transitions 0/533 dead transitions. [2024-11-13 14:20:18,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 533 transitions, 4501 flow [2024-11-13 14:20:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:20:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:20:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 502 transitions. [2024-11-13 14:20:18,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228287841191067 [2024-11-13 14:20:18,403 INFO L175 Difference]: Start difference. First operand has 102 places, 275 transitions, 2009 flow. Second operand 13 states and 502 transitions. [2024-11-13 14:20:18,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 533 transitions, 4501 flow [2024-11-13 14:20:28,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 533 transitions, 4499 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 14:20:28,528 INFO L231 Difference]: Finished difference. Result has 122 places, 363 transitions, 3507 flow [2024-11-13 14:20:28,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3507, PETRI_PLACES=122, PETRI_TRANSITIONS=363} [2024-11-13 14:20:28,530 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 56 predicate places. [2024-11-13 14:20:28,533 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 363 transitions, 3507 flow [2024-11-13 14:20:28,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-13 14:20:28,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:20:28,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:28,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:20:28,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:28,734 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:20:28,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:28,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1647609722, now seen corresponding path program 1 times [2024-11-13 14:20:28,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:28,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519213503] [2024-11-13 14:20:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:28,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:28,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:28,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:28,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:20:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:28,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:20:28,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:28,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:28,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:28,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519213503] [2024-11-13 14:20:28,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519213503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:28,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:28,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:20:28,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120607173] [2024-11-13 14:20:28,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:28,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:20:28,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:28,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:20:28,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:28,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 62 [2024-11-13 14:20:28,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 363 transitions, 3507 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-13 14:20:28,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:20:28,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 62 [2024-11-13 14:20:28,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:20:38,327 INFO L124 PetriNetUnfolderBase]: 46598/77018 cut-off events. [2024-11-13 14:20:38,327 INFO L125 PetriNetUnfolderBase]: For 200392/202488 co-relation queries the response was YES. [2024-11-13 14:20:39,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250258 conditions, 77018 events. 46598/77018 cut-off events. For 200392/202488 co-relation queries the response was YES. Maximal size of possible extension queue 4635. Compared 735238 event pairs, 8083 based on Foata normal form. 1785/77377 useless extension candidates. Maximal degree in co-relation 222700. Up to 22881 conditions per place. [2024-11-13 14:20:39,193 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 327 selfloop transitions, 268 changer transitions 0/645 dead transitions. [2024-11-13 14:20:39,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 645 transitions, 6612 flow [2024-11-13 14:20:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:20:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 14:20:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 506 transitions. [2024-11-13 14:20:39,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6277915632754343 [2024-11-13 14:20:39,196 INFO L175 Difference]: Start difference. First operand has 122 places, 363 transitions, 3507 flow. Second operand 13 states and 506 transitions. [2024-11-13 14:20:39,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 645 transitions, 6612 flow [2024-11-13 14:20:50,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 645 transitions, 6604 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-13 14:20:50,602 INFO L231 Difference]: Finished difference. Result has 142 places, 463 transitions, 5413 flow [2024-11-13 14:20:50,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3499, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5413, PETRI_PLACES=142, PETRI_TRANSITIONS=463} [2024-11-13 14:20:50,603 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 76 predicate places. [2024-11-13 14:20:50,603 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 463 transitions, 5413 flow [2024-11-13 14:20:50,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 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) [2024-11-13 14:20:50,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:20:50,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:50,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:20:50,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:50,804 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:20:50,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash 888826727, now seen corresponding path program 1 times [2024-11-13 14:20:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:50,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085809250] [2024-11-13 14:20:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:50,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:50,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:20:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:50,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:20:50,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:50,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:50,941 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:50,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085809250] [2024-11-13 14:20:50,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085809250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:50,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:50,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:20:50,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098163508] [2024-11-13 14:20:50,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:50,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:20:50,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:50,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:20:50,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:20:50,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 62 [2024-11-13 14:20:50,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 463 transitions, 5413 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2024-11-13 14:20:50,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:20:50,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 62 [2024-11-13 14:20:50,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:20:53,389 INFO L124 PetriNetUnfolderBase]: 8924/17316 cut-off events. [2024-11-13 14:20:53,389 INFO L125 PetriNetUnfolderBase]: For 45371/47114 co-relation queries the response was YES. [2024-11-13 14:20:53,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54079 conditions, 17316 events. 8924/17316 cut-off events. For 45371/47114 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 157564 event pairs, 2543 based on Foata normal form. 482/17347 useless extension candidates. Maximal degree in co-relation 51677. Up to 5406 conditions per place. [2024-11-13 14:20:53,583 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 59 selfloop transitions, 13 changer transitions 0/254 dead transitions. [2024-11-13 14:20:53,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 254 transitions, 2315 flow [2024-11-13 14:20:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:20:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:20:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-13 14:20:53,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7225806451612903 [2024-11-13 14:20:53,585 INFO L175 Difference]: Start difference. First operand has 142 places, 463 transitions, 5413 flow. Second operand 5 states and 224 transitions. [2024-11-13 14:20:53,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 254 transitions, 2315 flow [2024-11-13 14:20:54,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 254 transitions, 2307 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-13 14:20:54,556 INFO L231 Difference]: Finished difference. Result has 147 places, 221 transitions, 2119 flow [2024-11-13 14:20:54,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2119, PETRI_PLACES=147, PETRI_TRANSITIONS=221} [2024-11-13 14:20:54,558 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 81 predicate places. [2024-11-13 14:20:54,558 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 221 transitions, 2119 flow [2024-11-13 14:20:54,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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) [2024-11-13 14:20:54,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:20:54,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:54,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:20:54,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:54,759 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:20:54,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash 989805485, now seen corresponding path program 1 times [2024-11-13 14:20:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:54,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736463971] [2024-11-13 14:20:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:54,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:54,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:54,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:54,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:20:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:20:54,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:20:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:20:54,927 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-13 14:20:54,927 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:20:54,928 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2024-11-13 14:20:54,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-13 14:20:54,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-13 14:20:54,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-13 14:20:54,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-11-13 14:20:54,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-11-13 14:20:54,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-11-13 14:20:54,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-13 14:20:54,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 14:20:55,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:55,132 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:55,196 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 14:20:55,196 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:20:55,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:20:55 BasicIcfg [2024-11-13 14:20:55,201 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:20:55,201 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:20:55,201 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:20:55,202 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:20:55,202 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:50" (3/4) ... [2024-11-13 14:20:55,207 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 14:20:55,208 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:20:55,209 INFO L158 Benchmark]: Toolchain (without parser) took 66167.41ms. Allocated memory was 109.1MB in the beginning and 12.0GB in the end (delta: 11.9GB). Free memory was 83.8MB in the beginning and 8.6GB in the end (delta: -8.5GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2024-11-13 14:20:55,209 INFO L158 Benchmark]: CDTParser took 2.79ms. Allocated memory is still 83.9MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:20:55,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.78ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 63.1MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:20:55,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.76ms. Allocated memory is still 109.1MB. Free memory was 63.1MB in the beginning and 61.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:20:55,209 INFO L158 Benchmark]: Boogie Preprocessor took 64.35ms. Allocated memory is still 109.1MB. Free memory was 61.3MB in the beginning and 59.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:20:55,211 INFO L158 Benchmark]: RCFGBuilder took 748.90ms. Allocated memory is still 109.1MB. Free memory was 59.5MB in the beginning and 76.5MB in the end (delta: -17.0MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2024-11-13 14:20:55,212 INFO L158 Benchmark]: TraceAbstraction took 64773.32ms. Allocated memory was 109.1MB in the beginning and 12.0GB in the end (delta: 11.9GB). Free memory was 75.9MB in the beginning and 8.6GB in the end (delta: -8.5GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2024-11-13 14:20:55,213 INFO L158 Benchmark]: Witness Printer took 6.46ms. Allocated memory is still 12.0GB. Free memory was 8.6GB in the beginning and 8.6GB in the end (delta: 176.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:20:55,215 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.79ms. Allocated memory is still 83.9MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 505.78ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 63.1MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.76ms. Allocated memory is still 109.1MB. Free memory was 63.1MB in the beginning and 61.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.35ms. Allocated memory is still 109.1MB. Free memory was 61.3MB in the beginning and 59.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 748.90ms. Allocated memory is still 109.1MB. Free memory was 59.5MB in the beginning and 76.5MB in the end (delta: -17.0MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * TraceAbstraction took 64773.32ms. Allocated memory was 109.1MB in the beginning and 12.0GB in the end (delta: 11.9GB). Free memory was 75.9MB in the beginning and 8.6GB in the end (delta: -8.5GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. * Witness Printer took 6.46ms. Allocated memory is still 12.0GB. Free memory was 8.6GB in the beginning and 8.6GB in the end (delta: 176.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 16. Possible FailurePath: [L704] 0 int w=0, r=0, x, y; [L748] 0 pthread_t t1, t2, t3, t4; [L749] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, t1=-3, w=0, x=0, y=0] [L750] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, t1=-3, t2=-2, w=0, x=0, y=0] [L724] 2 int l; VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=0, x=0, y=0] [L751] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=0, t1=-3, t2=-2, t3=-1, w=0, x=0, y=0] [L752] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=0, t1=-3, t2=-2, t3=-1, t4=0, w=0, x=0, y=0] [L724] 4 int l; VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=0, x=0, y=0] [L725] CALL 2 __VERIFIER_atomic_take_read_lock() [L710] CALL 2 assume_abort_if_not(w==0) [L3] COND FALSE 2 !(!cond) [L710] RET 2 assume_abort_if_not(w==0) [L711] 2 r = r+1 [L725] RET 2 __VERIFIER_atomic_take_read_lock() [L727] 2 l = x VAL [\old(arg)={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L730] 2 y = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, r=1, w=0, x=0, y=0] [L733] 2 int ly = y; VAL [\old(arg)={0:0}, arg={0:0}, l=0, ly=0, r=1, w=0, x=0, y=0] [L736] 2 int lx = x; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L738] COND FALSE 2 !(!(ly == lx)) VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L740] 2 l = r-1 VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=1, w=0, x=0, y=0] [L725] CALL 4 __VERIFIER_atomic_take_read_lock() [L710] CALL 4 assume_abort_if_not(w==0) [L3] COND FALSE 4 !(!cond) [L710] RET 4 assume_abort_if_not(w==0) [L711] 4 r = r+1 [L725] RET 4 __VERIFIER_atomic_take_read_lock() [L727] 4 l = x VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L730] 4 y = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=2, w=0, x=0, y=0] [L743] 2 r = l VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=0, x=0, y=0] [L714] CALL 1 __VERIFIER_atomic_take_write_lock() [L706] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L706] RET 1 assume_abort_if_not(w==0 && r==0) [L707] 1 w = 1 [L714] RET 1 __VERIFIER_atomic_take_write_lock() [L733] 4 int ly = y; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=0, ly=0, r=0, w=1, x=0, y=0] [L716] 1 x = 3 VAL [\old(arg)={0:0}, arg={0:0}, r=0, w=1, x=3, y=0] [L736] 4 int lx = x; VAL [\old(arg)={0:0}, arg={0:0}, l=0, lx=3, ly=0, r=0, w=1, x=3, y=0] [L738] COND TRUE 4 !(ly == lx) [L738] CALL 4 reach_error() [L16] COND FALSE 4 !(0) VAL [r=0, w=1, x=3, y=0] [L16] 4 __assert_fail ("0", "read_write_lock-2.c", 7, __extension__ __PRETTY_FUNCTION__) VAL [r=0, w=1, x=3, y=0] - UnprovableResult [Line: 747]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 84 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 64.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 61.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 813 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 739 mSDsluCounter, 262 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2095 IncrementalHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 101 mSDtfsCounter, 2095 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5413occurred in iteration=6, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 211 SizeOfPredicates, 12 NumberOfNonLiveVariables, 401 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 14:20:55,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9189748b-e8ca-4ece-8680-e9f10eb04898/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample