./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/14_spin2003.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_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/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_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/14_spin2003.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/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_ebe207cb-a1d7-41d2-b637-b0324cae3494/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 83bca07672f78100877a79a1440d2a8107bad3ebb200d176bee629abfa2ef706 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:26:18,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:26:18,853 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:26:18,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:26:18,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:26:18,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:26:18,899 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:26:18,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:26:18,901 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:26:18,901 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:26:18,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:26:18,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:26:18,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:26:18,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:26:18,903 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:26:18,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:26:18,903 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:26:18,904 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:26:18,905 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:26:18,905 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:26:18,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:26:18,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:26:18,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:26:18,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:26:18,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:26:18,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:26:18,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:26:18,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:26:18,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:26:18,906 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:26:18,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:26:18,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:26:18,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:26:18,907 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_ebe207cb-a1d7-41d2-b637-b0324cae3494/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 -> 83bca07672f78100877a79a1440d2a8107bad3ebb200d176bee629abfa2ef706 [2024-11-13 14:26:19,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:26:19,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:26:19,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:26:19,252 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:26:19,253 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:26:19,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-ext/14_spin2003.i Unable to find full path for "g++" [2024-11-13 14:26:21,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:26:21,594 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:26:21,595 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/sv-benchmarks/c/pthread-ext/14_spin2003.i [2024-11-13 14:26:21,614 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/data/fd94a07af/4d8a35f61c4540309490d5d1c219bb95/FLAG0fbe99058 [2024-11-13 14:26:21,642 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/data/fd94a07af/4d8a35f61c4540309490d5d1c219bb95 [2024-11-13 14:26:21,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:26:21,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:26:21,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:26:21,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:26:21,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:26:21,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:21" (1/1) ... [2024-11-13 14:26:21,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfc52bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:21, skipping insertion in model container [2024-11-13 14:26:21,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:21" (1/1) ... [2024-11-13 14:26:21,704 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:26:22,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:26:22,172 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:26:22,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:26:22,276 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:26:22,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22 WrapperNode [2024-11-13 14:26:22,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:26:22,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:26:22,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:26:22,280 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:26:22,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,328 INFO L138 Inliner]: procedures = 164, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2024-11-13 14:26:22,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:26:22,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:26:22,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:26:22,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:26:22,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,364 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-13 14:26:22,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:26:22,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:26:22,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:26:22,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:26:22,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (1/1) ... [2024-11-13 14:26:22,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:26:22,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:22,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:26:22,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe207cb-a1d7-41d2-b637-b0324cae3494/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:26:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 14:26:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 14:26:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 14:26:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:26:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:26:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:26:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:26:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:26:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 14:26:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:26:22,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:26:22,464 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:26:22,609 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:26:22,611 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:26:22,737 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:26:22,737 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:26:22,858 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:26:22,858 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:26:22,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:26:22 BoogieIcfgContainer [2024-11-13 14:26:22,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:26:22,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:26:22,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:26:22,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:26:22,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:26:21" (1/3) ... [2024-11-13 14:26:22,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a783a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:26:22, skipping insertion in model container [2024-11-13 14:26:22,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:22" (2/3) ... [2024-11-13 14:26:22,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a783a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:26:22, skipping insertion in model container [2024-11-13 14:26:22,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:26:22" (3/3) ... [2024-11-13 14:26:22,870 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2024-11-13 14:26:22,887 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:26:22,889 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 14_spin2003.i that has 2 procedures, 17 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 14:26:22,889 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:26:22,929 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:26:22,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 19 transitions, 42 flow [2024-11-13 14:26:23,021 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-11-13 14:26:23,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:26:23,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 23 events. 2/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2024-11-13 14:26:23,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 19 transitions, 42 flow [2024-11-13 14:26:23,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 19 transitions, 42 flow [2024-11-13 14:26:23,040 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:26:23,053 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;@76136e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:26:23,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 14:26:23,065 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:26:23,065 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:26:23,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:26:23,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:23,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:26:23,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:26:23,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:23,075 INFO L85 PathProgramCache]: Analyzing trace with hash 153074, now seen corresponding path program 1 times [2024-11-13 14:26:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:23,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827059285] [2024-11-13 14:26:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:23,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:23,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:23,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827059285] [2024-11-13 14:26:23,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827059285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:23,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:23,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:26:23,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166566724] [2024-11-13 14:26:23,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:23,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:26:23,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:26:23,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:26:23,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 19 [2024-11-13 14:26:23,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 42 flow. Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:23,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:23,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 19 [2024-11-13 14:26:23,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:23,381 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-11-13 14:26:23,381 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:26:23,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 28 events. 5/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 5 based on Foata normal form. 4/31 useless extension candidates. Maximal degree in co-relation 39. Up to 20 conditions per place. [2024-11-13 14:26:23,382 INFO L140 encePairwiseOnDemand]: 16/19 looper letters, 8 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2024-11-13 14:26:23,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 46 flow [2024-11-13 14:26:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:26:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:26:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 23 transitions. [2024-11-13 14:26:23,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-13 14:26:23,406 INFO L175 Difference]: Start difference. First operand has 20 places, 19 transitions, 42 flow. Second operand 2 states and 23 transitions. [2024-11-13 14:26:23,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 46 flow [2024-11-13 14:26:23,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:26:23,413 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 30 flow [2024-11-13 14:26:23,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2024-11-13 14:26:23,425 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2024-11-13 14:26:23,425 INFO L471 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 30 flow [2024-11-13 14:26:23,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:23,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:23,425 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-13 14:26:23,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:26:23,426 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:26:23,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash 147100536, now seen corresponding path program 1 times [2024-11-13 14:26:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:23,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189610946] [2024-11-13 14:26:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:23,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:23,475 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:26:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:23,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:26:23,523 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:26:23,525 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-13 14:26:23,527 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-13 14:26:23,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-13 14:26:23,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-13 14:26:23,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:26:23,528 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 14:26:23,532 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:26:23,533 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 14:26:23,555 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:26:23,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 32 transitions, 74 flow [2024-11-13 14:26:23,581 INFO L124 PetriNetUnfolderBase]: 4/40 cut-off events. [2024-11-13 14:26:23,581 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:26:23,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 40 events. 4/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2024-11-13 14:26:23,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 32 transitions, 74 flow [2024-11-13 14:26:23,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 32 transitions, 74 flow [2024-11-13 14:26:23,587 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:26:23,588 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;@76136e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:26:23,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-13 14:26:23,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:26:23,595 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:26:23,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:26:23,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:23,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:26:23,595 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-13 14:26:23,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash 184850, now seen corresponding path program 1 times [2024-11-13 14:26:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:23,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131635284] [2024-11-13 14:26:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:23,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:23,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131635284] [2024-11-13 14:26:23,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131635284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:23,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:23,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:26:23,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507151808] [2024-11-13 14:26:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:23,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:26:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:26:23,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:26:23,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-13 14:26:23,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:23,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:23,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-13 14:26:23,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:23,788 INFO L124 PetriNetUnfolderBase]: 95/236 cut-off events. [2024-11-13 14:26:23,788 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-13 14:26:23,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 236 events. 95/236 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1109 event pairs, 95 based on Foata normal form. 48/281 useless extension candidates. Maximal degree in co-relation 293. Up to 182 conditions per place. [2024-11-13 14:26:23,791 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 14 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-13 14:26:23,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 84 flow [2024-11-13 14:26:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:26:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:26:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-11-13 14:26:23,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-13 14:26:23,793 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 74 flow. Second operand 2 states and 39 transitions. [2024-11-13 14:26:23,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 84 flow [2024-11-13 14:26:23,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:26:23,794 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 56 flow [2024-11-13 14:26:23,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-11-13 14:26:23,795 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2024-11-13 14:26:23,795 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 56 flow [2024-11-13 14:26:23,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:23,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:23,796 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2024-11-13 14:26:23,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:26:23,796 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-13 14:26:23,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1077188532, now seen corresponding path program 1 times [2024-11-13 14:26:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:23,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566811243] [2024-11-13 14:26:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:23,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:26:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:23,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:26:23,830 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:26:23,830 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-13 14:26:23,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-13 14:26:23,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-13 14:26:23,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-13 14:26:23,830 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-13 14:26:23,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:26:23,831 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 14:26:23,831 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:26:23,831 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 14:26:23,858 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:26:23,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 108 flow [2024-11-13 14:26:23,882 INFO L124 PetriNetUnfolderBase]: 6/57 cut-off events. [2024-11-13 14:26:23,882 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 14:26:23,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 6/57 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2024-11-13 14:26:23,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 108 flow [2024-11-13 14:26:23,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 45 transitions, 108 flow [2024-11-13 14:26:23,885 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:26:23,888 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;@76136e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:26:23,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-13 14:26:23,890 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:26:23,890 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:26:23,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:26:23,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:23,891 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:26:23,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 14:26:23,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:23,892 INFO L85 PathProgramCache]: Analyzing trace with hash 229535, now seen corresponding path program 1 times [2024-11-13 14:26:23,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:23,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016671413] [2024-11-13 14:26:23,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:23,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016671413] [2024-11-13 14:26:23,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016671413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:23,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:23,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:26:23,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426967063] [2024-11-13 14:26:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:23,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:26:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:26:23,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:26:23,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-11-13 14:26:23,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:23,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:23,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-11-13 14:26:23,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:24,317 INFO L124 PetriNetUnfolderBase]: 995/1844 cut-off events. [2024-11-13 14:26:24,318 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-11-13 14:26:24,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 1844 events. 995/1844 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11489 event pairs, 995 based on Foata normal form. 450/2279 useless extension candidates. Maximal degree in co-relation 834. Up to 1514 conditions per place. [2024-11-13 14:26:24,342 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 20 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2024-11-13 14:26:24,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 124 flow [2024-11-13 14:26:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:26:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:26:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 55 transitions. [2024-11-13 14:26:24,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-13 14:26:24,345 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 108 flow. Second operand 2 states and 55 transitions. [2024-11-13 14:26:24,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 124 flow [2024-11-13 14:26:24,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 122 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 14:26:24,347 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 82 flow [2024-11-13 14:26:24,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-11-13 14:26:24,350 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2024-11-13 14:26:24,350 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 82 flow [2024-11-13 14:26:24,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:24,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:24,351 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2024-11-13 14:26:24,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:26:24,351 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 14:26:24,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1685380230, now seen corresponding path program 1 times [2024-11-13 14:26:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:24,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537180295] [2024-11-13 14:26:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:24,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:24,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:26:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:24,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:26:24,430 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:26:24,430 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-13 14:26:24,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-13 14:26:24,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-13 14:26:24,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-13 14:26:24,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-13 14:26:24,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-13 14:26:24,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:26:24,431 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 14:26:24,436 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:26:24,436 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 14:26:24,478 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:26:24,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 58 transitions, 144 flow [2024-11-13 14:26:24,496 INFO L124 PetriNetUnfolderBase]: 8/74 cut-off events. [2024-11-13 14:26:24,497 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-13 14:26:24,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 74 events. 8/74 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 249 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 68. Up to 5 conditions per place. [2024-11-13 14:26:24,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 58 transitions, 144 flow [2024-11-13 14:26:24,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 144 flow [2024-11-13 14:26:24,503 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:26:24,504 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;@76136e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:26:24,505 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 14:26:24,508 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:26:24,509 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:26:24,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:26:24,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:24,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:26:24,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 14:26:24,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash 287129, now seen corresponding path program 1 times [2024-11-13 14:26:24,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:24,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699998185] [2024-11-13 14:26:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:24,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:24,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699998185] [2024-11-13 14:26:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699998185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:24,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:24,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:26:24,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817094501] [2024-11-13 14:26:24,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:24,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:26:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:26:24,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:26:24,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-11-13 14:26:24,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:24,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:24,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-11-13 14:26:24,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:26,212 INFO L124 PetriNetUnfolderBase]: 8555/13620 cut-off events. [2024-11-13 14:26:26,212 INFO L125 PetriNetUnfolderBase]: For 2794/2794 co-relation queries the response was YES. [2024-11-13 14:26:26,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26535 conditions, 13620 events. 8555/13620 cut-off events. For 2794/2794 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 97394 event pairs, 8555 based on Foata normal form. 3722/17259 useless extension candidates. Maximal degree in co-relation 3562. Up to 11666 conditions per place. [2024-11-13 14:26:26,330 INFO L140 encePairwiseOnDemand]: 49/58 looper letters, 26 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-11-13 14:26:26,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 166 flow [2024-11-13 14:26:26,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:26:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:26:26,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 71 transitions. [2024-11-13 14:26:26,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6120689655172413 [2024-11-13 14:26:26,333 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 144 flow. Second operand 2 states and 71 transitions. [2024-11-13 14:26:26,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 166 flow [2024-11-13 14:26:26,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 160 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-13 14:26:26,340 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 108 flow [2024-11-13 14:26:26,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-11-13 14:26:26,344 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2024-11-13 14:26:26,344 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 108 flow [2024-11-13 14:26:26,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:26,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:26,344 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:26,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:26:26,344 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 14:26:26,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:26,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1914213765, now seen corresponding path program 1 times [2024-11-13 14:26:26,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:26,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371722660] [2024-11-13 14:26:26,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:26,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:26,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:26,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371722660] [2024-11-13 14:26:26,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371722660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:26,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:26,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:26:26,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683763765] [2024-11-13 14:26:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:26,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:26:26,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:26,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:26:26,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:26:26,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-11-13 14:26:26,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:26,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:26,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-11-13 14:26:26,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:27,115 INFO L124 PetriNetUnfolderBase]: 4064/6083 cut-off events. [2024-11-13 14:26:27,116 INFO L125 PetriNetUnfolderBase]: For 805/805 co-relation queries the response was YES. [2024-11-13 14:26:27,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12183 conditions, 6083 events. 4064/6083 cut-off events. For 805/805 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 35416 event pairs, 4064 based on Foata normal form. 1172/7194 useless extension candidates. Maximal degree in co-relation 12176. Up to 5626 conditions per place. [2024-11-13 14:26:27,158 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 21 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2024-11-13 14:26:27,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 31 transitions, 128 flow [2024-11-13 14:26:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:26:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:26:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-13 14:26:27,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2024-11-13 14:26:27,160 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 108 flow. Second operand 3 states and 80 transitions. [2024-11-13 14:26:27,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 31 transitions, 128 flow [2024-11-13 14:26:27,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:26:27,167 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 86 flow [2024-11-13 14:26:27,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-11-13 14:26:27,168 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -16 predicate places. [2024-11-13 14:26:27,168 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 86 flow [2024-11-13 14:26:27,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:27,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:27,168 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:27,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:26:27,169 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 14:26:27,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash 549569030, now seen corresponding path program 1 times [2024-11-13 14:26:27,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:27,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330432077] [2024-11-13 14:26:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:27,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:27,192 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:26:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:27,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:26:27,216 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:26:27,216 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-13 14:26:27,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-13 14:26:27,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-13 14:26:27,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-13 14:26:27,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-13 14:26:27,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-13 14:26:27,217 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-13 14:26:27,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:26:27,217 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 14:26:27,217 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:26:27,217 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-13 14:26:27,259 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:26:27,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 182 flow [2024-11-13 14:26:27,271 INFO L124 PetriNetUnfolderBase]: 10/91 cut-off events. [2024-11-13 14:26:27,273 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-13 14:26:27,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 91 events. 10/91 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 328 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2024-11-13 14:26:27,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 71 transitions, 182 flow [2024-11-13 14:26:27,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 182 flow [2024-11-13 14:26:27,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:26:27,276 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;@76136e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:26:27,276 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-13 14:26:27,280 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:26:27,280 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:26:27,280 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:26:27,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:27,281 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:26:27,284 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:26:27,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash 357632, now seen corresponding path program 1 times [2024-11-13 14:26:27,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:27,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321203773] [2024-11-13 14:26:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:27,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:27,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:27,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321203773] [2024-11-13 14:26:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321203773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:27,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:27,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:26:27,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003579950] [2024-11-13 14:26:27,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:27,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:26:27,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:27,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:26:27,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:26:27,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 71 [2024-11-13 14:26:27,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:27,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:27,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 71 [2024-11-13 14:26:27,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:35,195 INFO L124 PetriNetUnfolderBase]: 66875/97252 cut-off events. [2024-11-13 14:26:35,195 INFO L125 PetriNetUnfolderBase]: For 26154/26154 co-relation queries the response was YES. [2024-11-13 14:26:35,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191816 conditions, 97252 events. 66875/97252 cut-off events. For 26154/26154 co-relation queries the response was YES. Maximal size of possible extension queue 3825. Compared 755497 event pairs, 66875 based on Foata normal form. 28538/125299 useless extension candidates. Maximal degree in co-relation 26786. Up to 85538 conditions per place. [2024-11-13 14:26:35,775 INFO L140 encePairwiseOnDemand]: 60/71 looper letters, 32 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2024-11-13 14:26:35,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 210 flow [2024-11-13 14:26:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:26:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:26:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2024-11-13 14:26:35,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6126760563380281 [2024-11-13 14:26:35,779 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 182 flow. Second operand 2 states and 87 transitions. [2024-11-13 14:26:35,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 210 flow [2024-11-13 14:26:35,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 53 transitions, 198 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-13 14:26:35,801 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 134 flow [2024-11-13 14:26:35,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-11-13 14:26:35,802 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2024-11-13 14:26:35,802 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 134 flow [2024-11-13 14:26:35,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:35,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:35,802 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:35,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:26:35,803 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:26:35,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash 184805838, now seen corresponding path program 1 times [2024-11-13 14:26:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:35,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363378932] [2024-11-13 14:26:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:35,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:35,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:35,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363378932] [2024-11-13 14:26:35,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363378932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:35,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:35,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:26:35,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160287695] [2024-11-13 14:26:35,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:35,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:26:35,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:26:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:26:35,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 71 [2024-11-13 14:26:35,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:35,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:35,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 71 [2024-11-13 14:26:35,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:26:38,252 INFO L124 PetriNetUnfolderBase]: 26564/36649 cut-off events. [2024-11-13 14:26:38,252 INFO L125 PetriNetUnfolderBase]: For 5368/5368 co-relation queries the response was YES. [2024-11-13 14:26:38,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73375 conditions, 36649 events. 26564/36649 cut-off events. For 5368/5368 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 229877 event pairs, 26564 based on Foata normal form. 7422/43770 useless extension candidates. Maximal degree in co-relation 73367. Up to 34376 conditions per place. [2024-11-13 14:26:38,637 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 26 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2024-11-13 14:26:38,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 38 transitions, 158 flow [2024-11-13 14:26:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:26:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:26:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-13 14:26:38,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.460093896713615 [2024-11-13 14:26:38,641 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 134 flow. Second operand 3 states and 98 transitions. [2024-11-13 14:26:38,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 38 transitions, 158 flow [2024-11-13 14:26:38,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:26:38,651 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 106 flow [2024-11-13 14:26:38,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2024-11-13 14:26:38,651 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -20 predicate places. [2024-11-13 14:26:38,652 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 106 flow [2024-11-13 14:26:38,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:38,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:38,652 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:38,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:26:38,652 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-13 14:26:38,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:38,652 INFO L85 PathProgramCache]: Analyzing trace with hash -862098772, now seen corresponding path program 1 times [2024-11-13 14:26:38,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:38,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777484548] [2024-11-13 14:26:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:38,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:38,678 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:26:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:26:38,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:26:38,701 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:26:38,701 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-13 14:26:38,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-13 14:26:38,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-13 14:26:38,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-13 14:26:38,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-13 14:26:38,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-13 14:26:38,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-13 14:26:38,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-13 14:26:38,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:26:38,702 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 14:26:38,703 WARN L247 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:26:38,704 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-13 14:26:38,738 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:26:38,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 222 flow [2024-11-13 14:26:38,749 INFO L124 PetriNetUnfolderBase]: 12/108 cut-off events. [2024-11-13 14:26:38,750 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-13 14:26:38,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 108 events. 12/108 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 389 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 115. Up to 7 conditions per place. [2024-11-13 14:26:38,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 84 transitions, 222 flow [2024-11-13 14:26:38,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 84 transitions, 222 flow [2024-11-13 14:26:38,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:26:38,753 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;@76136e5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:26:38,753 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-13 14:26:38,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:26:38,754 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 14:26:38,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:26:38,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:26:38,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 14:26:38,754 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-13 14:26:38,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:38,754 INFO L85 PathProgramCache]: Analyzing trace with hash 441044, now seen corresponding path program 1 times [2024-11-13 14:26:38,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:38,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651488519] [2024-11-13 14:26:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:38,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:38,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651488519] [2024-11-13 14:26:38,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651488519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:38,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:38,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:26:38,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782966659] [2024-11-13 14:26:38,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:38,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:26:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:38,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:26:38,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:26:38,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 84 [2024-11-13 14:26:38,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 222 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:38,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:26:38,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 84 [2024-11-13 14:26:38,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand