./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-theta/unwind2-1.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_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-theta/unwind2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:14:27,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:14:28,002 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:14:28,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:14:28,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:14:28,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:14:28,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:14:28,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:14:28,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:14:28,035 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:14:28,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:14:28,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:14:28,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:14:28,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:14:28,035 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:14:28,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:14:28,036 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:14:28,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:14:28,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:14:28,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:14:28,036 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:14:28,036 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:14:28,036 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:14:28,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:14:28,036 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:14:28,037 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:14:28,037 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:14:28,037 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:14:28,037 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:14:28,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:14:28,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:14:28,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:14:28,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:14:28,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:14:28,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:14:28,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:14:28,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:14:28,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:14:28,039 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:14:28,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:14:28,039 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:14:28,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:14:28,040 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_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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 -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2024-11-13 13:14:28,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:14:28,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:14:28,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:14:28,460 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:14:28,460 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:14:28,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-theta/unwind2-1.i Unable to find full path for "g++" [2024-11-13 13:14:30,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:14:30,857 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:14:30,858 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-13 13:14:30,873 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/data/0063ebc06/07e55aeb43804678afb41f95cc4cc419/FLAGa45dcea33 [2024-11-13 13:14:30,892 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/data/0063ebc06/07e55aeb43804678afb41f95cc4cc419 [2024-11-13 13:14:30,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:14:30,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:14:30,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:14:30,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:14:30,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:14:30,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:14:30" (1/1) ... [2024-11-13 13:14:30,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57026504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:30, skipping insertion in model container [2024-11-13 13:14:30,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:14:30" (1/1) ... [2024-11-13 13:14:30,941 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:14:31,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:14:31,362 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:14:31,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:14:31,461 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:14:31,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31 WrapperNode [2024-11-13 13:14:31,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:14:31,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:14:31,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:14:31,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:14:31,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,502 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 83 [2024-11-13 13:14:31,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:14:31,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:14:31,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:14:31,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:14:31,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,543 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 13:14:31,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:14:31,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:14:31,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:14:31,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:14:31,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (1/1) ... [2024-11-13 13:14:31,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:14:31,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:31,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:14:31,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:14:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:14:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-13 13:14:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-13 13:14:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-13 13:14:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-13 13:14:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:14:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:14:31,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:14:31,648 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 13:14:31,856 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:14:31,859 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:14:32,071 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:14:32,071 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:14:32,213 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:14:32,213 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:14:32,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:14:32 BoogieIcfgContainer [2024-11-13 13:14:32,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:14:32,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:14:32,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:14:32,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:14:32,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:14:30" (1/3) ... [2024-11-13 13:14:32,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a99368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:14:32, skipping insertion in model container [2024-11-13 13:14:32,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:31" (2/3) ... [2024-11-13 13:14:32,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a99368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:14:32, skipping insertion in model container [2024-11-13 13:14:32,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:14:32" (3/3) ... [2024-11-13 13:14:32,233 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2024-11-13 13:14:32,250 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:14:32,253 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-1.i that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2024-11-13 13:14:32,253 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:14:32,336 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 13:14:32,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-13 13:14:32,417 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-13 13:14:32,432 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:14:32,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-13 13:14:32,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-13 13:14:32,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2024-11-13 13:14:32,449 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:14:32,461 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;@3b1d7430, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:14:32,462 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 13:14:32,471 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:14:32,471 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-13 13:14:32,472 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 13:14:32,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:32,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:32,473 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:32,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1366531051, now seen corresponding path program 1 times [2024-11-13 13:14:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:32,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403449190] [2024-11-13 13:14:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:32,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:33,036 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 13:14:33,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:33,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403449190] [2024-11-13 13:14:33,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403449190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:33,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:33,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:14:33,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698858073] [2024-11-13 13:14:33,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:33,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:14:33,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:33,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:14:33,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:14:33,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:33,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 13:14:33,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:33,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:33,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:33,731 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2024-11-13 13:14:33,731 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-13 13:14:33,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3097 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2024-11-13 13:14:33,745 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-11-13 13:14:33,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2024-11-13 13:14:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:14:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:14:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-11-13 13:14:33,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-13 13:14:33,767 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2024-11-13 13:14:33,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2024-11-13 13:14:33,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 13:14:33,780 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2024-11-13 13:14:33,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-13 13:14:33,790 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-13 13:14:33,790 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2024-11-13 13:14:33,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 13:14:33,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:33,790 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:33,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:14:33,791 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:33,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash 586224586, now seen corresponding path program 1 times [2024-11-13 13:14:33,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:33,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416113349] [2024-11-13 13:14:33,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:33,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:34,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:34,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416113349] [2024-11-13 13:14:34,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416113349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:34,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106497706] [2024-11-13 13:14:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:34,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:34,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:34,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:34,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:14:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:34,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:14:34,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:34,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:34,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106497706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:34,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:34,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-13 13:14:34,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918331835] [2024-11-13 13:14:34,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:34,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:14:34,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:14:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:14:34,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-13 13:14:34,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 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 13:14:34,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:34,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-13 13:14:34,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:35,075 INFO L124 PetriNetUnfolderBase]: 513/1033 cut-off events. [2024-11-13 13:14:35,075 INFO L125 PetriNetUnfolderBase]: For 156/166 co-relation queries the response was YES. [2024-11-13 13:14:35,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1033 events. 513/1033 cut-off events. For 156/166 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5859 event pairs, 81 based on Foata normal form. 10/884 useless extension candidates. Maximal degree in co-relation 853. Up to 332 conditions per place. [2024-11-13 13:14:35,085 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 73 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-11-13 13:14:35,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 98 transitions, 438 flow [2024-11-13 13:14:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:14:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 13:14:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-13 13:14:35,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2024-11-13 13:14:35,087 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 9 states and 184 transitions. [2024-11-13 13:14:35,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 98 transitions, 438 flow [2024-11-13 13:14:35,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 98 transitions, 427 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 13:14:35,094 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 170 flow [2024-11-13 13:14:35,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-13 13:14:35,096 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-13 13:14:35,096 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 170 flow [2024-11-13 13:14:35,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 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 13:14:35,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:35,096 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:35,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:14:35,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:35,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:35,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:35,302 INFO L85 PathProgramCache]: Analyzing trace with hash 992107189, now seen corresponding path program 2 times [2024-11-13 13:14:35,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:35,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032465835] [2024-11-13 13:14:35,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:35,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:35,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:35,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032465835] [2024-11-13 13:14:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032465835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:35,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371003308] [2024-11-13 13:14:35,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:14:35,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:35,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:35,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:35,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:14:35,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:14:35,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:35,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:14:35,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:35,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:14:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371003308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:14:35,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-13 13:14:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768449779] [2024-11-13 13:14:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:35,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:14:35,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:35,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:14:35,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:14:35,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:35,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 13:14:35,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:35,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:35,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:36,050 INFO L124 PetriNetUnfolderBase]: 403/865 cut-off events. [2024-11-13 13:14:36,051 INFO L125 PetriNetUnfolderBase]: For 558/568 co-relation queries the response was YES. [2024-11-13 13:14:36,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 865 events. 403/865 cut-off events. For 558/568 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4926 event pairs, 101 based on Foata normal form. 26/838 useless extension candidates. Maximal degree in co-relation 1319. Up to 362 conditions per place. [2024-11-13 13:14:36,057 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 77 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-11-13 13:14:36,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 99 transitions, 505 flow [2024-11-13 13:14:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:14:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:14:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-11-13 13:14:36,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-13 13:14:36,069 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 170 flow. Second operand 10 states and 185 transitions. [2024-11-13 13:14:36,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 99 transitions, 505 flow [2024-11-13 13:14:36,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 99 transitions, 485 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-13 13:14:36,082 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 214 flow [2024-11-13 13:14:36,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-13 13:14:36,084 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-11-13 13:14:36,084 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 214 flow [2024-11-13 13:14:36,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 13:14:36,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:36,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:36,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:14:36,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:36,286 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:36,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:36,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1927968186, now seen corresponding path program 1 times [2024-11-13 13:14:36,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:36,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108898507] [2024-11-13 13:14:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:36,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:36,404 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 13:14:36,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:36,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108898507] [2024-11-13 13:14:36,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108898507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:36,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:36,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:14:36,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290554205] [2024-11-13 13:14:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:36,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:14:36,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:14:36,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:14:36,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:36,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 13:14:36,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:36,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:36,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:36,716 INFO L124 PetriNetUnfolderBase]: 473/1010 cut-off events. [2024-11-13 13:14:36,716 INFO L125 PetriNetUnfolderBase]: For 986/1004 co-relation queries the response was YES. [2024-11-13 13:14:36,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2606 conditions, 1010 events. 473/1010 cut-off events. For 986/1004 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5894 event pairs, 154 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 1783. Up to 489 conditions per place. [2024-11-13 13:14:36,726 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 64 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-11-13 13:14:36,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 575 flow [2024-11-13 13:14:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:14:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:14:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-13 13:14:36,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-11-13 13:14:36,728 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 214 flow. Second operand 7 states and 132 transitions. [2024-11-13 13:14:36,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 575 flow [2024-11-13 13:14:36,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 558 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-13 13:14:36,739 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 262 flow [2024-11-13 13:14:36,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-11-13 13:14:36,740 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-11-13 13:14:36,740 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 262 flow [2024-11-13 13:14:36,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 13:14:36,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:36,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:36,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:14:36,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:36,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash 361542598, now seen corresponding path program 1 times [2024-11-13 13:14:36,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:36,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867255002] [2024-11-13 13:14:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:36,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:36,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:36,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867255002] [2024-11-13 13:14:36,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867255002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:36,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853025011] [2024-11-13 13:14:36,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:36,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:36,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:36,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:36,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:14:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:36,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:14:36,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:37,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853025011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:37,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:37,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-13 13:14:37,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174379795] [2024-11-13 13:14:37,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:37,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:14:37,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:37,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:14:37,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:14:37,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:37,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 262 flow. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 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 13:14:37,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:37,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:37,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:37,539 INFO L124 PetriNetUnfolderBase]: 543/1153 cut-off events. [2024-11-13 13:14:37,539 INFO L125 PetriNetUnfolderBase]: For 1395/1419 co-relation queries the response was YES. [2024-11-13 13:14:37,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 1153 events. 543/1153 cut-off events. For 1395/1419 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6878 event pairs, 136 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2372. Up to 489 conditions per place. [2024-11-13 13:14:37,549 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 84 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-11-13 13:14:37,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 798 flow [2024-11-13 13:14:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:14:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 13:14:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-11-13 13:14:37,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-11-13 13:14:37,553 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 262 flow. Second operand 9 states and 169 transitions. [2024-11-13 13:14:37,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 798 flow [2024-11-13 13:14:37,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 109 transitions, 782 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 13:14:37,566 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 312 flow [2024-11-13 13:14:37,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=312, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-11-13 13:14:37,568 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-11-13 13:14:37,568 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 312 flow [2024-11-13 13:14:37,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 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 13:14:37,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:37,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:37,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:14:37,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:37,769 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:37,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:37,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1578079452, now seen corresponding path program 1 times [2024-11-13 13:14:37,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:37,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565653720] [2024-11-13 13:14:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:37,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:37,912 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 13:14:37,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:37,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565653720] [2024-11-13 13:14:37,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565653720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:37,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:37,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:14:37,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424429446] [2024-11-13 13:14:37,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:37,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:14:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:14:37,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:14:37,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:37,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 13:14:37,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:37,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:37,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:38,183 INFO L124 PetriNetUnfolderBase]: 473/997 cut-off events. [2024-11-13 13:14:38,184 INFO L125 PetriNetUnfolderBase]: For 1685/1707 co-relation queries the response was YES. [2024-11-13 13:14:38,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 997 events. 473/997 cut-off events. For 1685/1707 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5551 event pairs, 150 based on Foata normal form. 14/963 useless extension candidates. Maximal degree in co-relation 2138. Up to 522 conditions per place. [2024-11-13 13:14:38,192 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 54 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-11-13 13:14:38,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 576 flow [2024-11-13 13:14:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:14:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:14:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-13 13:14:38,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-13 13:14:38,194 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 312 flow. Second operand 6 states and 111 transitions. [2024-11-13 13:14:38,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 576 flow [2024-11-13 13:14:38,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 527 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-13 13:14:38,206 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 293 flow [2024-11-13 13:14:38,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-11-13 13:14:38,209 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2024-11-13 13:14:38,209 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 293 flow [2024-11-13 13:14:38,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 13:14:38,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:38,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:38,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:14:38,210 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:38,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash -567873857, now seen corresponding path program 1 times [2024-11-13 13:14:38,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:38,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692441869] [2024-11-13 13:14:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:38,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:38,315 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 13:14:38,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:38,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692441869] [2024-11-13 13:14:38,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692441869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:38,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:38,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:14:38,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44761211] [2024-11-13 13:14:38,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:38,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:14:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:14:38,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:14:38,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:38,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 13:14:38,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:38,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:38,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:38,578 INFO L124 PetriNetUnfolderBase]: 487/1034 cut-off events. [2024-11-13 13:14:38,578 INFO L125 PetriNetUnfolderBase]: For 1802/1834 co-relation queries the response was YES. [2024-11-13 13:14:38,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 1034 events. 487/1034 cut-off events. For 1802/1834 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5818 event pairs, 161 based on Foata normal form. 0/988 useless extension candidates. Maximal degree in co-relation 2151. Up to 546 conditions per place. [2024-11-13 13:14:38,595 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 59 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-11-13 13:14:38,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 582 flow [2024-11-13 13:14:38,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:14:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:14:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-11-13 13:14:38,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-11-13 13:14:38,597 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 293 flow. Second operand 6 states and 115 transitions. [2024-11-13 13:14:38,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 582 flow [2024-11-13 13:14:38,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 553 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-13 13:14:38,606 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 310 flow [2024-11-13 13:14:38,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2024-11-13 13:14:38,608 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-13 13:14:38,608 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 310 flow [2024-11-13 13:14:38,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 13:14:38,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:38,609 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:38,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:14:38,610 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:38,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1678067130, now seen corresponding path program 2 times [2024-11-13 13:14:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:38,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047313182] [2024-11-13 13:14:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:38,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:38,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047313182] [2024-11-13 13:14:38,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047313182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:38,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151255253] [2024-11-13 13:14:38,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:14:38,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:38,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:38,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:14:38,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:14:38,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:38,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:14:38,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:39,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:39,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151255253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:39,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:39,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-13 13:14:39,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97600661] [2024-11-13 13:14:39,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:39,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 13:14:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:39,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 13:14:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:14:39,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-13 13:14:39,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 310 flow. Second operand has 20 states, 20 states have (on average 10.35) internal successors, (207), 20 states have internal predecessors, (207), 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 13:14:39,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:39,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-13 13:14:39,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:40,189 INFO L124 PetriNetUnfolderBase]: 513/995 cut-off events. [2024-11-13 13:14:40,189 INFO L125 PetriNetUnfolderBase]: For 2152/2186 co-relation queries the response was YES. [2024-11-13 13:14:40,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 995 events. 513/995 cut-off events. For 2152/2186 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5229 event pairs, 63 based on Foata normal form. 0/973 useless extension candidates. Maximal degree in co-relation 2830. Up to 188 conditions per place. [2024-11-13 13:14:40,196 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 124 selfloop transitions, 23 changer transitions 0/155 dead transitions. [2024-11-13 13:14:40,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 155 transitions, 1204 flow [2024-11-13 13:14:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:14:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 13:14:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 247 transitions. [2024-11-13 13:14:40,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-13 13:14:40,201 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 310 flow. Second operand 14 states and 247 transitions. [2024-11-13 13:14:40,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 155 transitions, 1204 flow [2024-11-13 13:14:40,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 155 transitions, 1155 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-13 13:14:40,214 INFO L231 Difference]: Finished difference. Result has 84 places, 58 transitions, 407 flow [2024-11-13 13:14:40,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=407, PETRI_PLACES=84, PETRI_TRANSITIONS=58} [2024-11-13 13:14:40,217 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2024-11-13 13:14:40,217 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 58 transitions, 407 flow [2024-11-13 13:14:40,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.35) internal successors, (207), 20 states have internal predecessors, (207), 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 13:14:40,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:40,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:40,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:14:40,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 13:14:40,419 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:40,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:40,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1943727055, now seen corresponding path program 1 times [2024-11-13 13:14:40,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:40,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363313454] [2024-11-13 13:14:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:40,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:14:40,432 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:14:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:14:40,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:14:40,460 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:14:40,462 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-13 13:14:40,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-13 13:14:40,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-13 13:14:40,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-13 13:14:40,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-13 13:14:40,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-13 13:14:40,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-13 13:14:40,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:14:40,465 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-11-13 13:14:40,493 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 13:14:40,493 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:14:40,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:14:40 BasicIcfg [2024-11-13 13:14:40,509 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:14:40,509 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:14:40,509 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:14:40,509 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:14:40,510 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:14:32" (3/4) ... [2024-11-13 13:14:40,512 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 13:14:40,512 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:14:40,514 INFO L158 Benchmark]: Toolchain (without parser) took 9617.55ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 90.8MB in the beginning and 113.0MB in the end (delta: -22.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-11-13 13:14:40,515 INFO L158 Benchmark]: CDTParser took 1.35ms. Allocated memory is still 117.4MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:40,516 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.55ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 70.9MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 13:14:40,516 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.29ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:40,517 INFO L158 Benchmark]: Boogie Preprocessor took 56.03ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 67.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:40,517 INFO L158 Benchmark]: RCFGBuilder took 653.90ms. Allocated memory is still 117.4MB. Free memory was 67.6MB in the beginning and 47.7MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:14:40,518 INFO L158 Benchmark]: TraceAbstraction took 8289.55ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 47.2MB in the beginning and 113.0MB in the end (delta: -65.8MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2024-11-13 13:14:40,518 INFO L158 Benchmark]: Witness Printer took 3.39ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 113.0MB in the end (delta: 17.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:40,520 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.35ms. Allocated memory is still 117.4MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.55ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 70.9MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.29ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.03ms. Allocated memory is still 117.4MB. Free memory was 69.3MB in the beginning and 67.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 653.90ms. Allocated memory is still 117.4MB. Free memory was 67.6MB in the beginning and 47.7MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8289.55ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 47.2MB in the beginning and 113.0MB in the end (delta: -65.8MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. * Witness Printer took 3.39ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 113.0MB in the end (delta: 17.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = 1 [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=1, limit=0, t1=-2] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=1, limit=0, t1=-2, t2=-1] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=2] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=1] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=0, lim=2, limit=1] [L770] COND TRUE 2 i < bound [L770] 2 i++ VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=1, lim=2, limit=1] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=1, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=1, limit=1] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 779]: 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: 778]: 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 all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 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: 8.1s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1024 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1010 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1702 IncrementalHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 38 mSDtfsCounter, 1702 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=8, InterpolantAutomatonStates: 68, 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, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 560 SizeOfPredicates, 18 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 5/21 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 13:14:40,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-theta/unwind2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:14:43,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:14:43,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 13:14:43,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:14:43,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:14:43,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:14:43,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:14:43,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:14:43,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:14:43,389 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:14:43,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:14:43,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:14:43,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:14:43,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:14:43,391 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:14:43,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:14:43,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:14:43,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:14:43,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:14:43,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:14:43,392 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:14:43,393 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:14:43,393 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:14:43,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:14:43,393 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:14:43,393 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 13:14:43,394 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:14:43,394 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 13:14:43,394 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:14:43,394 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:14:43,394 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:14:43,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:14:43,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:14:43,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:14:43,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:14:43,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:14:43,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:14:43,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:14:43,396 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 13:14:43,396 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 13:14:43,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:14:43,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:14:43,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:14:43,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:14:43,396 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_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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 -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2024-11-13 13:14:43,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:14:43,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:14:43,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:14:43,743 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:14:43,744 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:14:43,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-theta/unwind2-1.i Unable to find full path for "g++" [2024-11-13 13:14:45,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:14:46,040 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:14:46,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-13 13:14:46,060 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/data/d292e2a68/f8077e17e6bc40e6a9030622c7e8d585/FLAGdbcd8e7f4 [2024-11-13 13:14:46,081 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/data/d292e2a68/f8077e17e6bc40e6a9030622c7e8d585 [2024-11-13 13:14:46,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:14:46,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:14:46,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:14:46,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:14:46,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:14:46,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36044857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46, skipping insertion in model container [2024-11-13 13:14:46,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,142 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:14:46,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:14:46,533 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:14:46,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:14:46,631 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:14:46,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46 WrapperNode [2024-11-13 13:14:46,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:14:46,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:14:46,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:14:46,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:14:46,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,695 INFO L138 Inliner]: procedures = 170, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 84 [2024-11-13 13:14:46,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:14:46,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:14:46,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:14:46,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:14:46,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,729 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 13:14:46,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:14:46,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:14:46,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:14:46,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:14:46,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (1/1) ... [2024-11-13 13:14:46,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:14:46,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:46,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:14:46,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:14:46,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:14:46,832 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-13 13:14:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-13 13:14:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-13 13:14:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-13 13:14:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 13:14:46,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:14:46,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:14:46,834 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 13:14:47,016 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:14:47,018 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:14:47,256 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:14:47,256 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:14:47,397 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:14:47,397 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:14:47,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:14:47 BoogieIcfgContainer [2024-11-13 13:14:47,398 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:14:47,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:14:47,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:14:47,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:14:47,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:14:46" (1/3) ... [2024-11-13 13:14:47,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145b68d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:14:47, skipping insertion in model container [2024-11-13 13:14:47,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:14:46" (2/3) ... [2024-11-13 13:14:47,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145b68d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:14:47, skipping insertion in model container [2024-11-13 13:14:47,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:14:47" (3/3) ... [2024-11-13 13:14:47,415 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2024-11-13 13:14:47,431 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:14:47,433 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-1.i that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2024-11-13 13:14:47,433 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:14:47,510 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 13:14:47,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-13 13:14:47,570 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-13 13:14:47,573 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:14:47,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-13 13:14:47,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-13 13:14:47,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2024-11-13 13:14:47,594 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:14:47,613 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;@69dc1d29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:14:47,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 13:14:47,627 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:14:47,629 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-13 13:14:47,630 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 13:14:47,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:47,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:47,631 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:47,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:47,635 INFO L85 PathProgramCache]: Analyzing trace with hash 338354967, now seen corresponding path program 1 times [2024-11-13 13:14:47,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:14:47,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616520707] [2024-11-13 13:14:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:47,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:47,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:47,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:47,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:14:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:47,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:14:47,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:47,933 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 13:14:47,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:14:47,935 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:14:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616520707] [2024-11-13 13:14:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616520707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:47,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:14:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246485716] [2024-11-13 13:14:47,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:47,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:14:47,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:14:47,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:14:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:14:48,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:48,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 13:14:48,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:48,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:48,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:48,508 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2024-11-13 13:14:48,512 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-13 13:14:48,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3101 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2024-11-13 13:14:48,520 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-11-13 13:14:48,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2024-11-13 13:14:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:14:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:14:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-11-13 13:14:48,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-13 13:14:48,538 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2024-11-13 13:14:48,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2024-11-13 13:14:48,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 13:14:48,555 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2024-11-13 13:14:48,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-13 13:14:48,563 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-13 13:14:48,563 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2024-11-13 13:14:48,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 13:14:48,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:48,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:48,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:14:48,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:48,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:48,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1898083594, now seen corresponding path program 1 times [2024-11-13 13:14:48,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:14:48,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206621611] [2024-11-13 13:14:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:48,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:48,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:48,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:48,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:14:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:48,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:14:48,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:49,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:49,214 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:14:49,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206621611] [2024-11-13 13:14:49,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206621611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:49,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:14:49,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-11-13 13:14:49,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178927917] [2024-11-13 13:14:49,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:49,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:14:49,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:14:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:14:49,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:14:49,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-13 13:14:49,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 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 13:14:49,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:49,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-13 13:14:49,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:50,393 INFO L124 PetriNetUnfolderBase]: 486/948 cut-off events. [2024-11-13 13:14:50,394 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-13 13:14:50,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2143 conditions, 948 events. 486/948 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5070 event pairs, 42 based on Foata normal form. 0/837 useless extension candidates. Maximal degree in co-relation 801. Up to 177 conditions per place. [2024-11-13 13:14:50,401 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 123 selfloop transitions, 23 changer transitions 0/153 dead transitions. [2024-11-13 13:14:50,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 153 transitions, 688 flow [2024-11-13 13:14:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:14:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 13:14:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 295 transitions. [2024-11-13 13:14:50,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48519736842105265 [2024-11-13 13:14:50,405 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 16 states and 295 transitions. [2024-11-13 13:14:50,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 153 transitions, 688 flow [2024-11-13 13:14:50,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 153 transitions, 675 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 13:14:50,410 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 237 flow [2024-11-13 13:14:50,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=237, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-13 13:14:50,411 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-11-13 13:14:50,411 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 237 flow [2024-11-13 13:14:50,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 14 states have internal predecessors, (142), 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 13:14:50,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:50,412 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:50,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:14:50,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:50,613 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:50,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:50,613 INFO L85 PathProgramCache]: Analyzing trace with hash 84955400, now seen corresponding path program 1 times [2024-11-13 13:14:50,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:14:50,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397750900] [2024-11-13 13:14:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:50,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:50,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:50,616 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:50,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:14:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:50,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:14:50,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:50,758 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 13:14:50,759 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:14:50,759 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:14:50,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397750900] [2024-11-13 13:14:50,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397750900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:50,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:50,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:14:50,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047471449] [2024-11-13 13:14:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:50,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:14:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:14:50,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:14:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:14:50,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:50,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 13:14:50,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:50,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:50,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:51,144 INFO L124 PetriNetUnfolderBase]: 473/1010 cut-off events. [2024-11-13 13:14:51,144 INFO L125 PetriNetUnfolderBase]: For 835/835 co-relation queries the response was YES. [2024-11-13 13:14:51,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1010 events. 473/1010 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5917 event pairs, 154 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 2274. Up to 489 conditions per place. [2024-11-13 13:14:51,154 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-11-13 13:14:51,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 630 flow [2024-11-13 13:14:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:14:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:14:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-13 13:14:51,157 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-11-13 13:14:51,157 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 237 flow. Second operand 7 states and 132 transitions. [2024-11-13 13:14:51,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 630 flow [2024-11-13 13:14:51,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 92 transitions, 538 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-11-13 13:14:51,171 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 262 flow [2024-11-13 13:14:51,171 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-13 13:14:51,172 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2024-11-13 13:14:51,172 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 262 flow [2024-11-13 13:14:51,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 13:14:51,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:51,173 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:51,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:14:51,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:51,374 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:51,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:51,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1662335674, now seen corresponding path program 1 times [2024-11-13 13:14:51,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:14:51,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655235968] [2024-11-13 13:14:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:51,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:51,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:51,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:14:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:51,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:14:51,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:51,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:51,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:51,744 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:14:51,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655235968] [2024-11-13 13:14:51,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655235968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:51,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:14:51,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-13 13:14:51,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817651771] [2024-11-13 13:14:51,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:51,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:14:51,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:14:51,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:14:51,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:14:51,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:51,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 262 flow. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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 13:14:51,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:51,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:51,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:52,617 INFO L124 PetriNetUnfolderBase]: 734/1450 cut-off events. [2024-11-13 13:14:52,617 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2024-11-13 13:14:52,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 1450 events. 734/1450 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8660 event pairs, 28 based on Foata normal form. 0/1312 useless extension candidates. Maximal degree in co-relation 3717. Up to 420 conditions per place. [2024-11-13 13:14:52,631 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 141 selfloop transitions, 26 changer transitions 0/177 dead transitions. [2024-11-13 13:14:52,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 177 transitions, 1183 flow [2024-11-13 13:14:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:14:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:14:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 273 transitions. [2024-11-13 13:14:52,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-11-13 13:14:52,638 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 262 flow. Second operand 15 states and 273 transitions. [2024-11-13 13:14:52,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 177 transitions, 1183 flow [2024-11-13 13:14:52,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 177 transitions, 1163 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 13:14:52,653 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 435 flow [2024-11-13 13:14:52,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=435, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-11-13 13:14:52,655 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2024-11-13 13:14:52,656 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 435 flow [2024-11-13 13:14:52,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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 13:14:52,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:52,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:52,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:14:52,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:52,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:52,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:52,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1544738512, now seen corresponding path program 1 times [2024-11-13 13:14:52,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:14:52,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211335103] [2024-11-13 13:14:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:52,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:52,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:52,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:52,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:14:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:52,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:14:52,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:53,001 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 13:14:53,004 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:14:53,005 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:14:53,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211335103] [2024-11-13 13:14:53,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211335103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:53,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:53,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:14:53,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589505223] [2024-11-13 13:14:53,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:53,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:14:53,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:14:53,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:14:53,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:14:53,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:53,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 13:14:53,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:53,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:53,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:53,358 INFO L124 PetriNetUnfolderBase]: 637/1267 cut-off events. [2024-11-13 13:14:53,359 INFO L125 PetriNetUnfolderBase]: For 3024/3024 co-relation queries the response was YES. [2024-11-13 13:14:53,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 1267 events. 637/1267 cut-off events. For 3024/3024 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7149 event pairs, 182 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 4028. Up to 697 conditions per place. [2024-11-13 13:14:53,370 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 65 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2024-11-13 13:14:53,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 729 flow [2024-11-13 13:14:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:14:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:14:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-13 13:14:53,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-13 13:14:53,371 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 435 flow. Second operand 6 states and 111 transitions. [2024-11-13 13:14:53,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 729 flow [2024-11-13 13:14:53,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 89 transitions, 630 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-11-13 13:14:53,387 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 376 flow [2024-11-13 13:14:53,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-11-13 13:14:53,388 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2024-11-13 13:14:53,388 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 376 flow [2024-11-13 13:14:53,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 13:14:53,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:53,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:53,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:14:53,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:53,590 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:53,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1578120289, now seen corresponding path program 1 times [2024-11-13 13:14:53,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:14:53,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904542059] [2024-11-13 13:14:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:53,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:53,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:53,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:53,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:14:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:53,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:14:53,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:53,715 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 13:14:53,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:14:53,715 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:14:53,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904542059] [2024-11-13 13:14:53,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904542059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:14:53,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:14:53,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:14:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382601410] [2024-11-13 13:14:53,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:14:53,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:14:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:14:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:14:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:14:53,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-13 13:14:53,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 13:14:53,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:53,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-13 13:14:53,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:54,064 INFO L124 PetriNetUnfolderBase]: 651/1296 cut-off events. [2024-11-13 13:14:54,064 INFO L125 PetriNetUnfolderBase]: For 2816/2816 co-relation queries the response was YES. [2024-11-13 13:14:54,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 1296 events. 651/1296 cut-off events. For 2816/2816 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7416 event pairs, 199 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 3615. Up to 725 conditions per place. [2024-11-13 13:14:54,076 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2024-11-13 13:14:54,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 690 flow [2024-11-13 13:14:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:14:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:14:54,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-11-13 13:14:54,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-11-13 13:14:54,077 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 376 flow. Second operand 6 states and 115 transitions. [2024-11-13 13:14:54,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 690 flow [2024-11-13 13:14:54,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 644 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-13 13:14:54,091 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 377 flow [2024-11-13 13:14:54,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-11-13 13:14:54,092 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2024-11-13 13:14:54,092 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 377 flow [2024-11-13 13:14:54,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 13:14:54,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:54,092 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:54,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 13:14:54,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:54,293 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:54,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 6215880, now seen corresponding path program 2 times [2024-11-13 13:14:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:14:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669515164] [2024-11-13 13:14:54,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:14:54,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:54,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:54,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:54,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:14:54,371 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:14:54,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:54,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:14:54,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:54,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:14:54,634 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 13:14:54,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669515164] [2024-11-13 13:14:54,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669515164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:54,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:14:54,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-13 13:14:54,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853175161] [2024-11-13 13:14:54,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:54,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:14:54,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 13:14:54,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:14:54,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:14:54,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-13 13:14:54,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 377 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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 13:14:54,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:14:54,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-13 13:14:54,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:14:55,460 INFO L124 PetriNetUnfolderBase]: 916/1782 cut-off events. [2024-11-13 13:14:55,461 INFO L125 PetriNetUnfolderBase]: For 2874/2886 co-relation queries the response was YES. [2024-11-13 13:14:55,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5280 conditions, 1782 events. 916/1782 cut-off events. For 2874/2886 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10772 event pairs, 150 based on Foata normal form. 6/1638 useless extension candidates. Maximal degree in co-relation 4679. Up to 648 conditions per place. [2024-11-13 13:14:55,473 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 143 selfloop transitions, 21 changer transitions 0/184 dead transitions. [2024-11-13 13:14:55,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 184 transitions, 1215 flow [2024-11-13 13:14:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:14:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 13:14:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-11-13 13:14:55,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-11-13 13:14:55,475 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 377 flow. Second operand 10 states and 196 transitions. [2024-11-13 13:14:55,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 184 transitions, 1215 flow [2024-11-13 13:14:55,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 184 transitions, 1171 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-13 13:14:55,492 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 434 flow [2024-11-13 13:14:55,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=434, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-11-13 13:14:55,496 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2024-11-13 13:14:55,496 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 434 flow [2024-11-13 13:14:55,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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 13:14:55,496 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:14:55,496 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:55,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 13:14:55,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:55,697 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:14:55,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash 247959597, now seen corresponding path program 1 times [2024-11-13 13:14:55,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 13:14:55,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363885979] [2024-11-13 13:14:55,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:55,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:55,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:55,702 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:55,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:14:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:14:55,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:14:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:14:55,812 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-13 13:14:55,812 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:14:55,813 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-13 13:14:55,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-13 13:14:55,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-13 13:14:55,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-13 13:14:55,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-13 13:14:55,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-13 13:14:55,816 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-13 13:14:55,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:14:56,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:56,020 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:56,045 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 13:14:56,045 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:14:56,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:14:56 BasicIcfg [2024-11-13 13:14:56,050 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:14:56,051 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:14:56,051 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:14:56,051 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:14:56,052 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:14:47" (3/4) ... [2024-11-13 13:14:56,053 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 13:14:56,054 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:14:56,055 INFO L158 Benchmark]: Toolchain (without parser) took 9970.01ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 59.1MB in the beginning and 60.3MB in the end (delta: -1.1MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2024-11-13 13:14:56,055 INFO L158 Benchmark]: CDTParser took 2.91ms. Allocated memory is still 83.9MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:56,056 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.34ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 38.4MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 13:14:56,056 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.07ms. Allocated memory is still 83.9MB. Free memory was 38.4MB in the beginning and 36.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:56,056 INFO L158 Benchmark]: Boogie Preprocessor took 63.63ms. Allocated memory is still 83.9MB. Free memory was 36.7MB in the beginning and 34.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:56,057 INFO L158 Benchmark]: RCFGBuilder took 635.71ms. Allocated memory is still 83.9MB. Free memory was 34.7MB in the beginning and 46.7MB in the end (delta: -12.1MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2024-11-13 13:14:56,057 INFO L158 Benchmark]: TraceAbstraction took 8649.74ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 46.2MB in the beginning and 60.3MB in the end (delta: -14.1MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2024-11-13 13:14:56,057 INFO L158 Benchmark]: Witness Printer took 3.43ms. Allocated memory is still 125.8MB. Free memory was 60.3MB in the beginning and 60.3MB in the end (delta: 17.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:14:56,059 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.91ms. Allocated memory is still 83.9MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 545.34ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 38.4MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.07ms. Allocated memory is still 83.9MB. Free memory was 38.4MB in the beginning and 36.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.63ms. Allocated memory is still 83.9MB. Free memory was 36.7MB in the beginning and 34.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 635.71ms. Allocated memory is still 83.9MB. Free memory was 34.7MB in the beginning and 46.7MB in the end (delta: -12.1MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8649.74ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 46.2MB in the beginning and 60.3MB in the end (delta: -14.1MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Witness Printer took 3.43ms. Allocated memory is still 125.8MB. Free memory was 60.3MB in the beginning and 60.3MB in the end (delta: 17.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = 1 [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=1, limit=0, t1=-1] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=1, limit=0, t1=-1, t2=0] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=2] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=1] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=0, lim=2, limit=1] [L770] COND TRUE 2 i < bound [L770] 2 i++ VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=1, lim=2, limit=1] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=1, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=1, limit=1] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 779]: 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: 778]: 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 all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 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: 8.5s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 986 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 974 mSDsluCounter, 145 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 115 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1665 IncrementalHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 30 mSDtfsCounter, 1665 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=435occurred in iteration=4, InterpolantAutomatonStates: 67, 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, 1.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 429 SizeOfPredicates, 27 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 0/10 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 13:14:56,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5be65950-e0a2-44da-9436-dcf22fd3e1ed/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