./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/queue.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:18:56,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:18:56,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:18:56,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:18:56,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:18:56,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:18:56,431 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:18:56,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:18:56,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:18:56,432 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:18:56,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:18:56,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:18:56,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:18:56,434 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:18:56,436 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:18:56,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:18:56,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:18:56,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:18:56,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:18:56,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:18:56,437 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:18:56,441 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:18:56,441 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:18:56,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:18:56,442 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:18:56,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:18:56,442 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:18:56,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:18:56,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:18:56,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:18:56,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:18:56,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:18:56,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:18:56,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:18:56,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:18:56,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:18:56,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:18:56,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:18:56,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:18:56,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:18:56,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:18:56,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:18:56,447 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-11-19 09:18:56,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:18:56,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:18:56,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:18:56,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:18:56,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:18:56,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue.i [2024-11-19 09:18:58,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:18:58,358 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:18:58,358 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-11-19 09:18:58,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c0c2a41/3f02a66bd23a4b59979d65d20767b727/FLAG7eb4422e9 [2024-11-19 09:18:58,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c0c2a41/3f02a66bd23a4b59979d65d20767b727 [2024-11-19 09:18:58,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:18:58,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:18:58,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:18:58,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:18:58,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:18:58,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bcf5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:58, skipping insertion in model container [2024-11-19 09:18:58,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:18:58" (1/1) ... [2024-11-19 09:18:58,449 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:18:58,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:18:58,976 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:18:59,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:18:59,076 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:18:59,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59 WrapperNode [2024-11-19 09:18:59,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:18:59,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:18:59,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:18:59,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:18:59,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,149 INFO L138 Inliner]: procedures = 274, calls = 107, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 295 [2024-11-19 09:18:59,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:18:59,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:18:59,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:18:59,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:18:59,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,203 INFO L175 MemorySlicer]: Split 92 memory accesses to 5 slices as follows [2, 54, 8, 5, 23]. 59 percent of accesses are in the largest equivalence class. The 58 initializations are split as follows [2, 23, 8, 5, 20]. The 16 writes are split as follows [0, 14, 0, 0, 2]. [2024-11-19 09:18:59,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,204 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:18:59,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:18:59,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:18:59,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:18:59,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (1/1) ... [2024-11-19 09:18:59,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:18:59,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:18:59,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:18:59,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:18:59,349 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 09:18:59,349 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 09:18:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 09:18:59,350 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 09:18:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:18:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:18:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:18:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 09:18:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 09:18:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 09:18:59,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:18:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:18:59,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 09:18:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 09:18:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 09:18:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:18:59,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:18:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:18:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:18:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 09:18:59,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 09:18:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 09:18:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:18:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:18:59,358 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:18:59,556 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:18:59,558 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:19:00,126 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:19:00,126 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:19:00,493 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:19:00,494 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:19:00,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:19:00 BoogieIcfgContainer [2024-11-19 09:19:00,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:19:00,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:19:00,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:19:00,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:19:00,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:18:58" (1/3) ... [2024-11-19 09:19:00,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d718e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:19:00, skipping insertion in model container [2024-11-19 09:19:00,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:18:59" (2/3) ... [2024-11-19 09:19:00,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d718e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:19:00, skipping insertion in model container [2024-11-19 09:19:00,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:19:00" (3/3) ... [2024-11-19 09:19:00,504 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-11-19 09:19:00,522 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:19:00,522 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-19 09:19:00,522 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:19:00,657 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:19:00,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 358 flow [2024-11-19 09:19:00,761 INFO L124 PetriNetUnfolderBase]: 14/170 cut-off events. [2024-11-19 09:19:00,763 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:19:00,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 14/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 528 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2024-11-19 09:19:00,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 172 transitions, 358 flow [2024-11-19 09:19:00,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 169 transitions, 350 flow [2024-11-19 09:19:00,791 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:19:00,799 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;@5ef2c5c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:19:00,800 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-11-19 09:19:00,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:19:00,804 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-19 09:19:00,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:19:00,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:00,805 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-19 09:19:00,807 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:00,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:00,813 INFO L85 PathProgramCache]: Analyzing trace with hash 25066, now seen corresponding path program 1 times [2024-11-19 09:19:00,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:00,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242731577] [2024-11-19 09:19:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:00,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:01,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242731577] [2024-11-19 09:19:01,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242731577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:01,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:01,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:01,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551462690] [2024-11-19 09:19:01,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:01,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:01,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:01,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:01,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2024-11-19 09:19:01,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:01,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:01,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:02,060 INFO L124 PetriNetUnfolderBase]: 1744/4652 cut-off events. [2024-11-19 09:19:02,060 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 09:19:02,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 4652 events. 1744/4652 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37088 event pairs, 1393 based on Foata normal form. 182/3586 useless extension candidates. Maximal degree in co-relation 7362. Up to 2744 conditions per place. [2024-11-19 09:19:02,091 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 57 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2024-11-19 09:19:02,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 436 flow [2024-11-19 09:19:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2024-11-19 09:19:02,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7054263565891473 [2024-11-19 09:19:02,110 INFO L175 Difference]: Start difference. First operand has 162 places, 169 transitions, 350 flow. Second operand 3 states and 364 transitions. [2024-11-19 09:19:02,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 436 flow [2024-11-19 09:19:02,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 153 transitions, 428 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:19:02,120 INFO L231 Difference]: Finished difference. Result has 150 places, 153 transitions, 314 flow [2024-11-19 09:19:02,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=150, PETRI_TRANSITIONS=153} [2024-11-19 09:19:02,127 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -12 predicate places. [2024-11-19 09:19:02,128 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 153 transitions, 314 flow [2024-11-19 09:19:02,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2024-11-19 09:19:02,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:02,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-19 09:19:02,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:19:02,129 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:02,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:02,130 INFO L85 PathProgramCache]: Analyzing trace with hash 25067, now seen corresponding path program 1 times [2024-11-19 09:19:02,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:02,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518279059] [2024-11-19 09:19:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:02,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:02,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:02,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:02,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518279059] [2024-11-19 09:19:02,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518279059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:02,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:02,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:02,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892793878] [2024-11-19 09:19:02,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:02,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:02,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:02,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:02,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 153 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2024-11-19 09:19:02,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:02,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:02,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:02,983 INFO L124 PetriNetUnfolderBase]: 1744/4649 cut-off events. [2024-11-19 09:19:02,986 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-19 09:19:02,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 4649 events. 1744/4649 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37018 event pairs, 1393 based on Foata normal form. 3/3406 useless extension candidates. Maximal degree in co-relation 7417. Up to 2744 conditions per place. [2024-11-19 09:19:03,019 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 2 changer transitions 0/150 dead transitions. [2024-11-19 09:19:03,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 426 flow [2024-11-19 09:19:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:03,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2024-11-19 09:19:03,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957364341085271 [2024-11-19 09:19:03,022 INFO L175 Difference]: Start difference. First operand has 150 places, 153 transitions, 314 flow. Second operand 3 states and 359 transitions. [2024-11-19 09:19:03,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 426 flow [2024-11-19 09:19:03,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:03,028 INFO L231 Difference]: Finished difference. Result has 147 places, 150 transitions, 308 flow [2024-11-19 09:19:03,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=147, PETRI_TRANSITIONS=150} [2024-11-19 09:19:03,030 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -15 predicate places. [2024-11-19 09:19:03,030 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 150 transitions, 308 flow [2024-11-19 09:19:03,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2024-11-19 09:19:03,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:03,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:03,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:19:03,031 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:03,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash 747506238, now seen corresponding path program 1 times [2024-11-19 09:19:03,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:03,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436669292] [2024-11-19 09:19:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:03,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:03,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:03,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436669292] [2024-11-19 09:19:03,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436669292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:03,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:03,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:03,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921469897] [2024-11-19 09:19:03,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:03,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:03,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:03,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:03,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:03,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-19 09:19:03,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 150 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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) [2024-11-19 09:19:03,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:03,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-19 09:19:03,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:03,766 INFO L124 PetriNetUnfolderBase]: 1744/4647 cut-off events. [2024-11-19 09:19:03,766 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-19 09:19:03,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7426 conditions, 4647 events. 1744/4647 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37009 event pairs, 1393 based on Foata normal form. 1/3404 useless extension candidates. Maximal degree in co-relation 7415. Up to 2743 conditions per place. [2024-11-19 09:19:03,791 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 56 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-11-19 09:19:03,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 148 transitions, 422 flow [2024-11-19 09:19:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2024-11-19 09:19:03,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6700581395348837 [2024-11-19 09:19:03,794 INFO L175 Difference]: Start difference. First operand has 147 places, 150 transitions, 308 flow. Second operand 4 states and 461 transitions. [2024-11-19 09:19:03,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 148 transitions, 422 flow [2024-11-19 09:19:03,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 148 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:03,797 INFO L231 Difference]: Finished difference. Result has 146 places, 148 transitions, 306 flow [2024-11-19 09:19:03,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=146, PETRI_TRANSITIONS=148} [2024-11-19 09:19:03,798 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -16 predicate places. [2024-11-19 09:19:03,798 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 148 transitions, 306 flow [2024-11-19 09:19:03,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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) [2024-11-19 09:19:03,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:03,799 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:19:03,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:19:03,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:03,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash 747506239, now seen corresponding path program 1 times [2024-11-19 09:19:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:03,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506992544] [2024-11-19 09:19:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:03,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:03,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:03,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506992544] [2024-11-19 09:19:03,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506992544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:03,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:03,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:03,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912300551] [2024-11-19 09:19:03,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:03,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:03,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:03,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:03,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:04,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-19 09:19:04,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 148 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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) [2024-11-19 09:19:04,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:04,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-19 09:19:04,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:04,512 INFO L124 PetriNetUnfolderBase]: 1744/4645 cut-off events. [2024-11-19 09:19:04,512 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-19 09:19:04,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 4645 events. 1744/4645 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37079 event pairs, 1393 based on Foata normal form. 2/3404 useless extension candidates. Maximal degree in co-relation 7410. Up to 2743 conditions per place. [2024-11-19 09:19:04,536 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 56 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2024-11-19 09:19:04,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 146 transitions, 420 flow [2024-11-19 09:19:04,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2024-11-19 09:19:04,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6700581395348837 [2024-11-19 09:19:04,538 INFO L175 Difference]: Start difference. First operand has 146 places, 148 transitions, 306 flow. Second operand 4 states and 461 transitions. [2024-11-19 09:19:04,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 146 transitions, 420 flow [2024-11-19 09:19:04,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 146 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:04,543 INFO L231 Difference]: Finished difference. Result has 144 places, 146 transitions, 302 flow [2024-11-19 09:19:04,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=144, PETRI_TRANSITIONS=146} [2024-11-19 09:19:04,545 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -18 predicate places. [2024-11-19 09:19:04,545 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 146 transitions, 302 flow [2024-11-19 09:19:04,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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) [2024-11-19 09:19:04,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:04,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:04,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:19:04,547 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:04,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:04,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1029048543, now seen corresponding path program 1 times [2024-11-19 09:19:04,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:04,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548116411] [2024-11-19 09:19:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:04,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:04,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:04,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548116411] [2024-11-19 09:19:04,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548116411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:04,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:04,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:04,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279389670] [2024-11-19 09:19:04,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:04,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:04,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:04,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 172 [2024-11-19 09:19:04,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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) [2024-11-19 09:19:04,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:04,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 172 [2024-11-19 09:19:04,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:05,231 INFO L124 PetriNetUnfolderBase]: 1703/4144 cut-off events. [2024-11-19 09:19:05,232 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-19 09:19:05,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6880 conditions, 4144 events. 1703/4144 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 30735 event pairs, 702 based on Foata normal form. 204/3608 useless extension candidates. Maximal degree in co-relation 6865. Up to 1413 conditions per place. [2024-11-19 09:19:05,254 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 73 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2024-11-19 09:19:05,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 149 transitions, 465 flow [2024-11-19 09:19:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:05,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 438 transitions. [2024-11-19 09:19:05,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366279069767442 [2024-11-19 09:19:05,256 INFO L175 Difference]: Start difference. First operand has 144 places, 146 transitions, 302 flow. Second operand 4 states and 438 transitions. [2024-11-19 09:19:05,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 149 transitions, 465 flow [2024-11-19 09:19:05,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 149 transitions, 459 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:05,259 INFO L231 Difference]: Finished difference. Result has 128 places, 130 transitions, 274 flow [2024-11-19 09:19:05,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=128, PETRI_TRANSITIONS=130} [2024-11-19 09:19:05,260 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -34 predicate places. [2024-11-19 09:19:05,260 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 130 transitions, 274 flow [2024-11-19 09:19:05,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 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) [2024-11-19 09:19:05,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:05,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:05,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:19:05,262 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:05,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1029048544, now seen corresponding path program 1 times [2024-11-19 09:19:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:05,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488371531] [2024-11-19 09:19:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:05,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:05,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488371531] [2024-11-19 09:19:05,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488371531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:05,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:05,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:19:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264170033] [2024-11-19 09:19:05,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:05,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:19:05,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:19:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:19:05,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 172 [2024-11-19 09:19:05,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 130 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 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) [2024-11-19 09:19:05,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:05,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 172 [2024-11-19 09:19:05,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:06,495 INFO L124 PetriNetUnfolderBase]: 1703/3675 cut-off events. [2024-11-19 09:19:06,496 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-11-19 09:19:06,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 3675 events. 1703/3675 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 24520 event pairs, 702 based on Foata normal form. 204/3340 useless extension candidates. Maximal degree in co-relation 2518. Up to 1412 conditions per place. [2024-11-19 09:19:06,518 INFO L140 encePairwiseOnDemand]: 151/172 looper letters, 72 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2024-11-19 09:19:06,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 135 transitions, 443 flow [2024-11-19 09:19:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:19:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:19:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 528 transitions. [2024-11-19 09:19:06,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-11-19 09:19:06,520 INFO L175 Difference]: Start difference. First operand has 128 places, 130 transitions, 274 flow. Second operand 5 states and 528 transitions. [2024-11-19 09:19:06,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 135 transitions, 443 flow [2024-11-19 09:19:06,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 135 transitions, 433 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:06,525 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 250 flow [2024-11-19 09:19:06,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2024-11-19 09:19:06,527 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -47 predicate places. [2024-11-19 09:19:06,528 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 250 flow [2024-11-19 09:19:06,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 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) [2024-11-19 09:19:06,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:06,529 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:06,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:19:06,529 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:06,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:06,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1835734632, now seen corresponding path program 1 times [2024-11-19 09:19:06,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:06,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97520349] [2024-11-19 09:19:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:06,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:07,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:07,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97520349] [2024-11-19 09:19:07,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97520349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:07,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:07,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:19:07,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557127267] [2024-11-19 09:19:07,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:07,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 09:19:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 09:19:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:19:07,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 172 [2024-11-19 09:19:07,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2024-11-19 09:19:07,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:07,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 172 [2024-11-19 09:19:07,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:08,503 INFO L124 PetriNetUnfolderBase]: 2502/5391 cut-off events. [2024-11-19 09:19:08,503 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-11-19 09:19:08,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 5391 events. 2502/5391 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 38753 event pairs, 536 based on Foata normal form. 0/4393 useless extension candidates. Maximal degree in co-relation 3717. Up to 3436 conditions per place. [2024-11-19 09:19:08,527 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 124 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2024-11-19 09:19:08,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 183 transitions, 659 flow [2024-11-19 09:19:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:19:08,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:19:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 669 transitions. [2024-11-19 09:19:08,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5556478405315615 [2024-11-19 09:19:08,530 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 250 flow. Second operand 7 states and 669 transitions. [2024-11-19 09:19:08,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 183 transitions, 659 flow [2024-11-19 09:19:08,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 183 transitions, 643 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:19:08,536 INFO L231 Difference]: Finished difference. Result has 121 places, 126 transitions, 310 flow [2024-11-19 09:19:08,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=121, PETRI_TRANSITIONS=126} [2024-11-19 09:19:08,537 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -41 predicate places. [2024-11-19 09:19:08,537 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 126 transitions, 310 flow [2024-11-19 09:19:08,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2024-11-19 09:19:08,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:08,539 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:08,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:19:08,539 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:08,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:08,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1409040039, now seen corresponding path program 1 times [2024-11-19 09:19:08,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:08,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120264505] [2024-11-19 09:19:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:08,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:08,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:08,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120264505] [2024-11-19 09:19:08,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120264505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:08,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:08,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:08,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109777105] [2024-11-19 09:19:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:08,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:08,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:08,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-19 09:19:08,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 126 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2024-11-19 09:19:08,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:08,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-19 09:19:08,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:08,977 INFO L124 PetriNetUnfolderBase]: 1382/3218 cut-off events. [2024-11-19 09:19:08,977 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 09:19:08,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5612 conditions, 3218 events. 1382/3218 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19602 event pairs, 703 based on Foata normal form. 55/2726 useless extension candidates. Maximal degree in co-relation 5605. Up to 1211 conditions per place. [2024-11-19 09:19:08,992 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 80 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2024-11-19 09:19:08,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 139 transitions, 476 flow [2024-11-19 09:19:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2024-11-19 09:19:08,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7558139534883721 [2024-11-19 09:19:08,997 INFO L175 Difference]: Start difference. First operand has 121 places, 126 transitions, 310 flow. Second operand 3 states and 390 transitions. [2024-11-19 09:19:08,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 139 transitions, 476 flow [2024-11-19 09:19:08,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 139 transitions, 451 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-19 09:19:09,001 INFO L231 Difference]: Finished difference. Result has 114 places, 116 transitions, 249 flow [2024-11-19 09:19:09,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=114, PETRI_TRANSITIONS=116} [2024-11-19 09:19:09,003 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-11-19 09:19:09,003 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 116 transitions, 249 flow [2024-11-19 09:19:09,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2024-11-19 09:19:09,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:09,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:09,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:19:09,008 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:09,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:09,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1094290775, now seen corresponding path program 1 times [2024-11-19 09:19:09,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:09,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070449353] [2024-11-19 09:19:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:09,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:09,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070449353] [2024-11-19 09:19:09,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070449353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:09,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:09,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644903678] [2024-11-19 09:19:09,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:09,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:09,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:09,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:09,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:09,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:09,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2024-11-19 09:19:09,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:09,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:09,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:09,473 INFO L124 PetriNetUnfolderBase]: 1392/3289 cut-off events. [2024-11-19 09:19:09,473 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-19 09:19:09,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5671 conditions, 3289 events. 1392/3289 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20466 event pairs, 1089 based on Foata normal form. 77/2806 useless extension candidates. Maximal degree in co-relation 5666. Up to 2215 conditions per place. [2024-11-19 09:19:09,490 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 59 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2024-11-19 09:19:09,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 363 flow [2024-11-19 09:19:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2024-11-19 09:19:09,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957364341085271 [2024-11-19 09:19:09,492 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 249 flow. Second operand 3 states and 359 transitions. [2024-11-19 09:19:09,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 363 flow [2024-11-19 09:19:09,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:09,495 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 242 flow [2024-11-19 09:19:09,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2024-11-19 09:19:09,496 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-19 09:19:09,496 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 242 flow [2024-11-19 09:19:09,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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) [2024-11-19 09:19:09,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:09,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:09,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:19:09,497 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:09,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1094290776, now seen corresponding path program 1 times [2024-11-19 09:19:09,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:09,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042866161] [2024-11-19 09:19:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:09,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:09,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:09,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042866161] [2024-11-19 09:19:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042866161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:09,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:09,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:19:09,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559231095] [2024-11-19 09:19:09,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:09,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:09,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:09,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:09,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-19 09:19:09,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2024-11-19 09:19:09,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:09,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-19 09:19:09,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:09,978 INFO L124 PetriNetUnfolderBase]: 1392/3277 cut-off events. [2024-11-19 09:19:09,978 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 09:19:09,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 3277 events. 1392/3277 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20315 event pairs, 1089 based on Foata normal form. 0/2717 useless extension candidates. Maximal degree in co-relation 5641. Up to 2215 conditions per place. [2024-11-19 09:19:09,994 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 59 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2024-11-19 09:19:09,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 112 transitions, 360 flow [2024-11-19 09:19:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2024-11-19 09:19:09,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-11-19 09:19:09,996 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 242 flow. Second operand 3 states and 363 transitions. [2024-11-19 09:19:09,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 112 transitions, 360 flow [2024-11-19 09:19:09,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:09,998 INFO L231 Difference]: Finished difference. Result has 112 places, 112 transitions, 241 flow [2024-11-19 09:19:09,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=112, PETRI_TRANSITIONS=112} [2024-11-19 09:19:09,999 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-19 09:19:09,999 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 112 transitions, 241 flow [2024-11-19 09:19:10,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2024-11-19 09:19:10,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:10,000 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:10,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:19:10,000 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:10,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash -436723347, now seen corresponding path program 1 times [2024-11-19 09:19:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:10,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910289683] [2024-11-19 09:19:10,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:10,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:10,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910289683] [2024-11-19 09:19:10,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910289683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:10,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:10,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:10,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452018048] [2024-11-19 09:19:10,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:10,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:10,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:10,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-19 09:19:10,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 112 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2024-11-19 09:19:10,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:10,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-19 09:19:10,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:10,570 INFO L124 PetriNetUnfolderBase]: 1392/3253 cut-off events. [2024-11-19 09:19:10,570 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-19 09:19:10,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5623 conditions, 3253 events. 1392/3253 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20034 event pairs, 1074 based on Foata normal form. 12/2729 useless extension candidates. Maximal degree in co-relation 5618. Up to 2186 conditions per place. [2024-11-19 09:19:10,584 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 65 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-11-19 09:19:10,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 118 transitions, 390 flow [2024-11-19 09:19:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2024-11-19 09:19:10,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6816860465116279 [2024-11-19 09:19:10,586 INFO L175 Difference]: Start difference. First operand has 112 places, 112 transitions, 241 flow. Second operand 4 states and 469 transitions. [2024-11-19 09:19:10,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 118 transitions, 390 flow [2024-11-19 09:19:10,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 118 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:10,588 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 242 flow [2024-11-19 09:19:10,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=112, PETRI_TRANSITIONS=110} [2024-11-19 09:19:10,591 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-19 09:19:10,591 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 242 flow [2024-11-19 09:19:10,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2024-11-19 09:19:10,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:10,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:10,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:19:10,592 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:10,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash -436723346, now seen corresponding path program 1 times [2024-11-19 09:19:10,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:10,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788500872] [2024-11-19 09:19:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:10,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:10,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788500872] [2024-11-19 09:19:10,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788500872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:10,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:10,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:19:10,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153863536] [2024-11-19 09:19:10,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:10,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:19:10,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:10,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:19:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:19:11,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-19 09:19:11,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 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) [2024-11-19 09:19:11,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:11,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-19 09:19:11,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:11,748 INFO L124 PetriNetUnfolderBase]: 1392/3229 cut-off events. [2024-11-19 09:19:11,748 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 09:19:11,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5625 conditions, 3229 events. 1392/3229 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 19773 event pairs, 1074 based on Foata normal form. 24/2729 useless extension candidates. Maximal degree in co-relation 5620. Up to 2185 conditions per place. [2024-11-19 09:19:11,767 INFO L140 encePairwiseOnDemand]: 165/172 looper letters, 64 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-19 09:19:11,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 393 flow [2024-11-19 09:19:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:19:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:19:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 565 transitions. [2024-11-19 09:19:11,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6569767441860465 [2024-11-19 09:19:11,770 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 242 flow. Second operand 5 states and 565 transitions. [2024-11-19 09:19:11,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 393 flow [2024-11-19 09:19:11,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 116 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:11,775 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 242 flow [2024-11-19 09:19:11,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2024-11-19 09:19:11,775 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -51 predicate places. [2024-11-19 09:19:11,776 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 242 flow [2024-11-19 09:19:11,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 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) [2024-11-19 09:19:11,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:11,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:11,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:19:11,777 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:11,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:11,777 INFO L85 PathProgramCache]: Analyzing trace with hash -653553668, now seen corresponding path program 1 times [2024-11-19 09:19:11,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:11,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259004276] [2024-11-19 09:19:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:11,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:11,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259004276] [2024-11-19 09:19:11,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259004276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:11,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:11,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385235125] [2024-11-19 09:19:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:11,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:11,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:11,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:11,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-19 09:19:11,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2024-11-19 09:19:11,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:11,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-19 09:19:11,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:12,160 INFO L124 PetriNetUnfolderBase]: 1380/3217 cut-off events. [2024-11-19 09:19:12,160 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-19 09:19:12,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5602 conditions, 3217 events. 1380/3217 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 19735 event pairs, 1074 based on Foata normal form. 0/2705 useless extension candidates. Maximal degree in co-relation 5597. Up to 2175 conditions per place. [2024-11-19 09:19:12,178 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 65 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-11-19 09:19:12,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 115 transitions, 391 flow [2024-11-19 09:19:12,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2024-11-19 09:19:12,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7228682170542635 [2024-11-19 09:19:12,180 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 242 flow. Second operand 3 states and 373 transitions. [2024-11-19 09:19:12,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 115 transitions, 391 flow [2024-11-19 09:19:12,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 381 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:19:12,183 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 234 flow [2024-11-19 09:19:12,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2024-11-19 09:19:12,184 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -53 predicate places. [2024-11-19 09:19:12,184 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 234 flow [2024-11-19 09:19:12,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2024-11-19 09:19:12,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:12,185 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:12,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:19:12,185 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:12,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:12,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1388772758, now seen corresponding path program 1 times [2024-11-19 09:19:12,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:12,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094711546] [2024-11-19 09:19:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:12,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:12,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094711546] [2024-11-19 09:19:12,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094711546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:12,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:12,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:19:12,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996974116] [2024-11-19 09:19:12,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:12,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:19:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:19:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:19:13,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-19 09:19:13,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 234 flow. Second operand has 10 states, 10 states have (on average 95.2) internal successors, (952), 10 states have internal predecessors, (952), 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) [2024-11-19 09:19:13,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:13,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-19 09:19:13,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:13,844 INFO L124 PetriNetUnfolderBase]: 1717/3744 cut-off events. [2024-11-19 09:19:13,845 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-19 09:19:13,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6748 conditions, 3744 events. 1717/3744 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22635 event pairs, 388 based on Foata normal form. 0/3242 useless extension candidates. Maximal degree in co-relation 6743. Up to 2364 conditions per place. [2024-11-19 09:19:13,860 INFO L140 encePairwiseOnDemand]: 159/172 looper letters, 116 selfloop transitions, 12 changer transitions 0/167 dead transitions. [2024-11-19 09:19:13,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 167 transitions, 620 flow [2024-11-19 09:19:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:19:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:19:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 965 transitions. [2024-11-19 09:19:13,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6233850129198967 [2024-11-19 09:19:13,863 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 234 flow. Second operand 9 states and 965 transitions. [2024-11-19 09:19:13,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 167 transitions, 620 flow [2024-11-19 09:19:13,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 167 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:13,866 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 266 flow [2024-11-19 09:19:13,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-11-19 09:19:13,867 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -47 predicate places. [2024-11-19 09:19:13,867 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 266 flow [2024-11-19 09:19:13,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.2) internal successors, (952), 10 states have internal predecessors, (952), 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) [2024-11-19 09:19:13,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:13,868 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:13,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:19:13,869 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:13,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:13,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1579885146, now seen corresponding path program 1 times [2024-11-19 09:19:13,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:13,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931309708] [2024-11-19 09:19:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:13,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:14,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:14,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931309708] [2024-11-19 09:19:14,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931309708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:14,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:14,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 09:19:14,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022183534] [2024-11-19 09:19:14,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:14,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 09:19:14,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:14,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 09:19:14,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:19:16,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-19 09:19:16,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 266 flow. Second operand has 15 states, 15 states have (on average 94.53333333333333) internal successors, (1418), 15 states have internal predecessors, (1418), 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) [2024-11-19 09:19:16,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:16,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-19 09:19:16,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:17,038 INFO L124 PetriNetUnfolderBase]: 1711/3617 cut-off events. [2024-11-19 09:19:17,038 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2024-11-19 09:19:17,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6914 conditions, 3617 events. 1711/3617 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 21446 event pairs, 438 based on Foata normal form. 0/3215 useless extension candidates. Maximal degree in co-relation 6908. Up to 2065 conditions per place. [2024-11-19 09:19:17,056 INFO L140 encePairwiseOnDemand]: 158/172 looper letters, 128 selfloop transitions, 13 changer transitions 0/177 dead transitions. [2024-11-19 09:19:17,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 177 transitions, 696 flow [2024-11-19 09:19:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:19:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:19:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1254 transitions. [2024-11-19 09:19:17,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6075581395348837 [2024-11-19 09:19:17,060 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 266 flow. Second operand 12 states and 1254 transitions. [2024-11-19 09:19:17,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 177 transitions, 696 flow [2024-11-19 09:19:17,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 177 transitions, 676 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 09:19:17,064 INFO L231 Difference]: Finished difference. Result has 116 places, 105 transitions, 272 flow [2024-11-19 09:19:17,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=116, PETRI_TRANSITIONS=105} [2024-11-19 09:19:17,064 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-11-19 09:19:17,065 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 105 transitions, 272 flow [2024-11-19 09:19:17,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 94.53333333333333) internal successors, (1418), 15 states have internal predecessors, (1418), 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) [2024-11-19 09:19:17,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:17,066 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:17,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:19:17,066 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:17,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:17,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1431409847, now seen corresponding path program 1 times [2024-11-19 09:19:17,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:17,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830182766] [2024-11-19 09:19:17,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:17,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:17,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:17,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830182766] [2024-11-19 09:19:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830182766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:17,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:17,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 09:19:17,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275765273] [2024-11-19 09:19:17,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:17,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:19:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:19:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:19:18,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 172 [2024-11-19 09:19:18,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 105 transitions, 272 flow. Second operand has 11 states, 11 states have (on average 77.54545454545455) internal successors, (853), 11 states have internal predecessors, (853), 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) [2024-11-19 09:19:18,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:18,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 172 [2024-11-19 09:19:18,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:19,461 INFO L124 PetriNetUnfolderBase]: 1766/3722 cut-off events. [2024-11-19 09:19:19,462 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-19 09:19:19,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7180 conditions, 3722 events. 1766/3722 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 22273 event pairs, 470 based on Foata normal form. 12/3314 useless extension candidates. Maximal degree in co-relation 7173. Up to 2181 conditions per place. [2024-11-19 09:19:19,482 INFO L140 encePairwiseOnDemand]: 160/172 looper letters, 122 selfloop transitions, 11 changer transitions 0/169 dead transitions. [2024-11-19 09:19:19,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 169 transitions, 675 flow [2024-11-19 09:19:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:19:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:19:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 880 transitions. [2024-11-19 09:19:19,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-11-19 09:19:19,486 INFO L175 Difference]: Start difference. First operand has 116 places, 105 transitions, 272 flow. Second operand 10 states and 880 transitions. [2024-11-19 09:19:19,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 169 transitions, 675 flow [2024-11-19 09:19:19,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 169 transitions, 653 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-19 09:19:19,492 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 290 flow [2024-11-19 09:19:19,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-11-19 09:19:19,493 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -44 predicate places. [2024-11-19 09:19:19,493 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 290 flow [2024-11-19 09:19:19,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 77.54545454545455) internal successors, (853), 11 states have internal predecessors, (853), 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) [2024-11-19 09:19:19,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:19,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:19,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:19:19,494 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:19,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:19,495 INFO L85 PathProgramCache]: Analyzing trace with hash 429726208, now seen corresponding path program 1 times [2024-11-19 09:19:19,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:19,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599231631] [2024-11-19 09:19:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:19,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:19,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599231631] [2024-11-19 09:19:19,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599231631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:19,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:19,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635328651] [2024-11-19 09:19:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:19,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:19,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:19,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:19,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-19 09:19:19,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2024-11-19 09:19:19,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:19,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-19 09:19:19,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:20,049 INFO L124 PetriNetUnfolderBase]: 2436/5847 cut-off events. [2024-11-19 09:19:20,049 INFO L125 PetriNetUnfolderBase]: For 580/626 co-relation queries the response was YES. [2024-11-19 09:19:20,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 5847 events. 2436/5847 cut-off events. For 580/626 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 43380 event pairs, 1149 based on Foata normal form. 134/5082 useless extension candidates. Maximal degree in co-relation 10745. Up to 2365 conditions per place. [2024-11-19 09:19:20,087 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 110 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2024-11-19 09:19:20,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 158 transitions, 665 flow [2024-11-19 09:19:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2024-11-19 09:19:20,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7926356589147286 [2024-11-19 09:19:20,089 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 290 flow. Second operand 3 states and 409 transitions. [2024-11-19 09:19:20,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 158 transitions, 665 flow [2024-11-19 09:19:20,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 158 transitions, 635 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 09:19:20,094 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 284 flow [2024-11-19 09:19:20,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=114, PETRI_TRANSITIONS=108} [2024-11-19 09:19:20,095 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -48 predicate places. [2024-11-19 09:19:20,095 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 284 flow [2024-11-19 09:19:20,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2024-11-19 09:19:20,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:20,096 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:20,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:19:20,096 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:20,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1608969793, now seen corresponding path program 1 times [2024-11-19 09:19:20,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:20,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318419926] [2024-11-19 09:19:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:20,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:20,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:20,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318419926] [2024-11-19 09:19:20,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318419926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:20,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:20,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:20,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058328625] [2024-11-19 09:19:20,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:20,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:20,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:20,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:20,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:20,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-19 09:19:20,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 108 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 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) [2024-11-19 09:19:20,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:20,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-19 09:19:20,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:20,977 INFO L124 PetriNetUnfolderBase]: 3110/6180 cut-off events. [2024-11-19 09:19:20,977 INFO L125 PetriNetUnfolderBase]: For 1203/1203 co-relation queries the response was YES. [2024-11-19 09:19:20,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13113 conditions, 6180 events. 3110/6180 cut-off events. For 1203/1203 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 40198 event pairs, 1523 based on Foata normal form. 36/5825 useless extension candidates. Maximal degree in co-relation 13102. Up to 4154 conditions per place. [2024-11-19 09:19:21,013 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 94 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2024-11-19 09:19:21,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 142 transitions, 576 flow [2024-11-19 09:19:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 491 transitions. [2024-11-19 09:19:21,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7136627906976745 [2024-11-19 09:19:21,015 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 284 flow. Second operand 4 states and 491 transitions. [2024-11-19 09:19:21,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 142 transitions, 576 flow [2024-11-19 09:19:21,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 142 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:21,021 INFO L231 Difference]: Finished difference. Result has 117 places, 109 transitions, 298 flow [2024-11-19 09:19:21,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=117, PETRI_TRANSITIONS=109} [2024-11-19 09:19:21,023 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -45 predicate places. [2024-11-19 09:19:21,023 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 109 transitions, 298 flow [2024-11-19 09:19:21,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 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) [2024-11-19 09:19:21,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:21,024 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:21,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 09:19:21,024 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:21,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:21,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1130291866, now seen corresponding path program 1 times [2024-11-19 09:19:21,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:21,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100414417] [2024-11-19 09:19:21,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:21,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100414417] [2024-11-19 09:19:21,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100414417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:21,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:21,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:21,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909895121] [2024-11-19 09:19:21,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:21,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:21,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-19 09:19:21,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2024-11-19 09:19:21,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:21,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-19 09:19:21,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:21,519 INFO L124 PetriNetUnfolderBase]: 2103/4653 cut-off events. [2024-11-19 09:19:21,520 INFO L125 PetriNetUnfolderBase]: For 880/880 co-relation queries the response was YES. [2024-11-19 09:19:21,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9543 conditions, 4653 events. 2103/4653 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 30042 event pairs, 1116 based on Foata normal form. 94/4284 useless extension candidates. Maximal degree in co-relation 9531. Up to 1766 conditions per place. [2024-11-19 09:19:21,542 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 76 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2024-11-19 09:19:21,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 496 flow [2024-11-19 09:19:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:21,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2024-11-19 09:19:21,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7286821705426356 [2024-11-19 09:19:21,545 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 298 flow. Second operand 3 states and 376 transitions. [2024-11-19 09:19:21,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 123 transitions, 496 flow [2024-11-19 09:19:21,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 123 transitions, 484 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:21,551 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 295 flow [2024-11-19 09:19:21,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-11-19 09:19:21,551 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -44 predicate places. [2024-11-19 09:19:21,551 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 295 flow [2024-11-19 09:19:21,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2024-11-19 09:19:21,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:21,552 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:21,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:19:21,552 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:21,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:21,553 INFO L85 PathProgramCache]: Analyzing trace with hash 852801930, now seen corresponding path program 1 times [2024-11-19 09:19:21,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:21,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46118351] [2024-11-19 09:19:21,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:21,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:21,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46118351] [2024-11-19 09:19:21,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46118351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:21,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:21,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:19:21,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519961331] [2024-11-19 09:19:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:21,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:21,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:19:21,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 172 [2024-11-19 09:19:21,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2024-11-19 09:19:21,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:21,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 172 [2024-11-19 09:19:21,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:21,951 INFO L124 PetriNetUnfolderBase]: 1272/3141 cut-off events. [2024-11-19 09:19:21,951 INFO L125 PetriNetUnfolderBase]: For 888/888 co-relation queries the response was YES. [2024-11-19 09:19:21,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6604 conditions, 3141 events. 1272/3141 cut-off events. For 888/888 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 18368 event pairs, 291 based on Foata normal form. 190/3036 useless extension candidates. Maximal degree in co-relation 6591. Up to 1595 conditions per place. [2024-11-19 09:19:21,968 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 68 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2024-11-19 09:19:21,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 120 transitions, 487 flow [2024-11-19 09:19:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2024-11-19 09:19:21,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7286821705426356 [2024-11-19 09:19:21,970 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 295 flow. Second operand 3 states and 376 transitions. [2024-11-19 09:19:21,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 120 transitions, 487 flow [2024-11-19 09:19:21,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 120 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:21,974 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 301 flow [2024-11-19 09:19:21,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-11-19 09:19:21,975 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -44 predicate places. [2024-11-19 09:19:21,975 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 301 flow [2024-11-19 09:19:21,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2024-11-19 09:19:21,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:21,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:21,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 09:19:21,976 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:21,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:21,976 INFO L85 PathProgramCache]: Analyzing trace with hash -386843505, now seen corresponding path program 1 times [2024-11-19 09:19:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:21,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817540948] [2024-11-19 09:19:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:21,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:22,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:22,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817540948] [2024-11-19 09:19:22,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817540948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:22,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:22,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:22,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767940634] [2024-11-19 09:19:22,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:22,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:22,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:22,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:22,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:22,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 172 [2024-11-19 09:19:22,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2024-11-19 09:19:22,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:22,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 172 [2024-11-19 09:19:22,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:22,571 INFO L124 PetriNetUnfolderBase]: 1272/2936 cut-off events. [2024-11-19 09:19:22,571 INFO L125 PetriNetUnfolderBase]: For 1003/1003 co-relation queries the response was YES. [2024-11-19 09:19:22,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6632 conditions, 2936 events. 1272/2936 cut-off events. For 1003/1003 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 16217 event pairs, 884 based on Foata normal form. 72/2848 useless extension candidates. Maximal degree in co-relation 6619. Up to 1927 conditions per place. [2024-11-19 09:19:22,586 INFO L140 encePairwiseOnDemand]: 161/172 looper letters, 63 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-19 09:19:22,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 104 transitions, 434 flow [2024-11-19 09:19:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-11-19 09:19:22,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2024-11-19 09:19:22,589 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 301 flow. Second operand 4 states and 444 transitions. [2024-11-19 09:19:22,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 104 transitions, 434 flow [2024-11-19 09:19:22,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:22,594 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 285 flow [2024-11-19 09:19:22,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2024-11-19 09:19:22,594 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -50 predicate places. [2024-11-19 09:19:22,595 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 285 flow [2024-11-19 09:19:22,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 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) [2024-11-19 09:19:22,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:22,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:22,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 09:19:22,596 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:22,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1627108890, now seen corresponding path program 1 times [2024-11-19 09:19:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:22,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016006720] [2024-11-19 09:19:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:22,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:22,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:22,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016006720] [2024-11-19 09:19:22,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016006720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:22,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:22,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:19:22,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747328872] [2024-11-19 09:19:22,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:22,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:19:22,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:22,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:19:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:19:23,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 172 [2024-11-19 09:19:23,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 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) [2024-11-19 09:19:23,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:23,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 172 [2024-11-19 09:19:23,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:23,648 INFO L124 PetriNetUnfolderBase]: 1272/2810 cut-off events. [2024-11-19 09:19:23,649 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2024-11-19 09:19:23,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6405 conditions, 2810 events. 1272/2810 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14625 event pairs, 884 based on Foata normal form. 72/2794 useless extension candidates. Maximal degree in co-relation 6391. Up to 1926 conditions per place. [2024-11-19 09:19:23,662 INFO L140 encePairwiseOnDemand]: 160/172 looper letters, 62 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2024-11-19 09:19:23,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 97 transitions, 422 flow [2024-11-19 09:19:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:19:23,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:19:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2024-11-19 09:19:23,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-11-19 09:19:23,664 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 285 flow. Second operand 5 states and 538 transitions. [2024-11-19 09:19:23,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 97 transitions, 422 flow [2024-11-19 09:19:23,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 97 transitions, 416 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:23,670 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 275 flow [2024-11-19 09:19:23,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2024-11-19 09:19:23,670 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -56 predicate places. [2024-11-19 09:19:23,671 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 275 flow [2024-11-19 09:19:23,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.28571428571429) internal successors, (695), 7 states have internal predecessors, (695), 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) [2024-11-19 09:19:23,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:23,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:23,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 09:19:23,672 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:23,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1236209336, now seen corresponding path program 1 times [2024-11-19 09:19:23,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:23,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999516706] [2024-11-19 09:19:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:23,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:19:23,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:23,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999516706] [2024-11-19 09:19:23,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999516706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:19:23,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591187233] [2024-11-19 09:19:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:23,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:19:23,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:19:23,745 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:19:23,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:19:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:23,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 09:19:23,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:19:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:19:24,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:19:24,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591187233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:24,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:19:24,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-19 09:19:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690928728] [2024-11-19 09:19:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:24,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:19:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:19:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:19:24,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-19 09:19:24,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2024-11-19 09:19:24,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:24,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-19 09:19:24,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:24,467 INFO L124 PetriNetUnfolderBase]: 1272/2818 cut-off events. [2024-11-19 09:19:24,468 INFO L125 PetriNetUnfolderBase]: For 934/934 co-relation queries the response was YES. [2024-11-19 09:19:24,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6414 conditions, 2818 events. 1272/2818 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14707 event pairs, 1010 based on Foata normal form. 4/2724 useless extension candidates. Maximal degree in co-relation 6400. Up to 2207 conditions per place. [2024-11-19 09:19:24,477 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 59 selfloop transitions, 1 changer transitions 2/91 dead transitions. [2024-11-19 09:19:24,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 91 transitions, 395 flow [2024-11-19 09:19:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:19:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:19:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2024-11-19 09:19:24,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-11-19 09:19:24,479 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 275 flow. Second operand 3 states and 360 transitions. [2024-11-19 09:19:24,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 91 transitions, 395 flow [2024-11-19 09:19:24,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 91 transitions, 385 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:19:24,487 INFO L231 Difference]: Finished difference. Result has 103 places, 89 transitions, 260 flow [2024-11-19 09:19:24,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=103, PETRI_TRANSITIONS=89} [2024-11-19 09:19:24,488 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -59 predicate places. [2024-11-19 09:19:24,488 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 89 transitions, 260 flow [2024-11-19 09:19:24,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2024-11-19 09:19:24,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:24,488 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:24,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:19:24,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 09:19:24,689 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:24,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1099231026, now seen corresponding path program 1 times [2024-11-19 09:19:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:24,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481652922] [2024-11-19 09:19:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:25,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:25,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481652922] [2024-11-19 09:19:25,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481652922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:25,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:25,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 09:19:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522278343] [2024-11-19 09:19:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:25,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:19:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:19:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:19:26,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-19 09:19:26,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 89 transitions, 260 flow. Second operand has 13 states, 13 states have (on average 96.15384615384616) internal successors, (1250), 13 states have internal predecessors, (1250), 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) [2024-11-19 09:19:26,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:26,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-19 09:19:26,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:26,968 INFO L124 PetriNetUnfolderBase]: 1358/2886 cut-off events. [2024-11-19 09:19:26,968 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2024-11-19 09:19:26,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 2886 events. 1358/2886 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14300 event pairs, 289 based on Foata normal form. 0/2812 useless extension candidates. Maximal degree in co-relation 6648. Up to 1285 conditions per place. [2024-11-19 09:19:26,979 INFO L140 encePairwiseOnDemand]: 155/172 looper letters, 118 selfloop transitions, 16 changer transitions 14/168 dead transitions. [2024-11-19 09:19:26,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 168 transitions, 808 flow [2024-11-19 09:19:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 09:19:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 09:19:26,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1252 transitions. [2024-11-19 09:19:26,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6065891472868217 [2024-11-19 09:19:26,982 INFO L175 Difference]: Start difference. First operand has 103 places, 89 transitions, 260 flow. Second operand 12 states and 1252 transitions. [2024-11-19 09:19:26,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 168 transitions, 808 flow [2024-11-19 09:19:26,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 168 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:19:26,992 INFO L231 Difference]: Finished difference. Result has 113 places, 92 transitions, 315 flow [2024-11-19 09:19:26,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=315, PETRI_PLACES=113, PETRI_TRANSITIONS=92} [2024-11-19 09:19:26,993 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -49 predicate places. [2024-11-19 09:19:26,993 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 92 transitions, 315 flow [2024-11-19 09:19:26,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 96.15384615384616) internal successors, (1250), 13 states have internal predecessors, (1250), 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) [2024-11-19 09:19:26,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:26,994 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:26,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 09:19:26,994 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:26,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:26,995 INFO L85 PathProgramCache]: Analyzing trace with hash 594541401, now seen corresponding path program 1 times [2024-11-19 09:19:26,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:26,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577111753] [2024-11-19 09:19:26,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:26,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:29,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:29,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577111753] [2024-11-19 09:19:29,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577111753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:29,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:29,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 09:19:29,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407869473] [2024-11-19 09:19:29,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:29,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:19:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:19:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:19:30,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 172 [2024-11-19 09:19:30,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 92 transitions, 315 flow. Second operand has 18 states, 18 states have (on average 64.38888888888889) internal successors, (1159), 18 states have internal predecessors, (1159), 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) [2024-11-19 09:19:30,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:30,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 172 [2024-11-19 09:19:30,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:30,736 INFO L124 PetriNetUnfolderBase]: 1500/3163 cut-off events. [2024-11-19 09:19:30,736 INFO L125 PetriNetUnfolderBase]: For 1241/1241 co-relation queries the response was YES. [2024-11-19 09:19:30,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 3163 events. 1500/3163 cut-off events. For 1241/1241 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 15294 event pairs, 216 based on Foata normal form. 0/3077 useless extension candidates. Maximal degree in co-relation 7571. Up to 939 conditions per place. [2024-11-19 09:19:30,745 INFO L140 encePairwiseOnDemand]: 150/172 looper letters, 147 selfloop transitions, 21 changer transitions 15/202 dead transitions. [2024-11-19 09:19:30,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 202 transitions, 1033 flow [2024-11-19 09:19:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 09:19:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 09:19:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1159 transitions. [2024-11-19 09:19:30,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4211482558139535 [2024-11-19 09:19:30,748 INFO L175 Difference]: Start difference. First operand has 113 places, 92 transitions, 315 flow. Second operand 16 states and 1159 transitions. [2024-11-19 09:19:30,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 202 transitions, 1033 flow [2024-11-19 09:19:30,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 202 transitions, 1011 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-19 09:19:30,754 INFO L231 Difference]: Finished difference. Result has 123 places, 98 transitions, 376 flow [2024-11-19 09:19:30,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=376, PETRI_PLACES=123, PETRI_TRANSITIONS=98} [2024-11-19 09:19:30,755 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -39 predicate places. [2024-11-19 09:19:30,755 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 98 transitions, 376 flow [2024-11-19 09:19:30,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 64.38888888888889) internal successors, (1159), 18 states have internal predecessors, (1159), 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) [2024-11-19 09:19:30,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:30,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:30,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 09:19:30,756 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:30,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash 925768121, now seen corresponding path program 1 times [2024-11-19 09:19:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581251317] [2024-11-19 09:19:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581251317] [2024-11-19 09:19:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581251317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:30,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:30,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:19:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471491749] [2024-11-19 09:19:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:30,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:19:30,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:19:30,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:19:31,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-19 09:19:31,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 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) [2024-11-19 09:19:31,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:31,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-19 09:19:31,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:31,330 INFO L124 PetriNetUnfolderBase]: 1385/3067 cut-off events. [2024-11-19 09:19:31,330 INFO L125 PetriNetUnfolderBase]: For 1443/1448 co-relation queries the response was YES. [2024-11-19 09:19:31,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7458 conditions, 3067 events. 1385/3067 cut-off events. For 1443/1448 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 15785 event pairs, 690 based on Foata normal form. 12/3008 useless extension candidates. Maximal degree in co-relation 7438. Up to 1705 conditions per place. [2024-11-19 09:19:31,344 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 115 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2024-11-19 09:19:31,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 150 transitions, 824 flow [2024-11-19 09:19:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:19:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:19:31,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2024-11-19 09:19:31,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7311046511627907 [2024-11-19 09:19:31,346 INFO L175 Difference]: Start difference. First operand has 123 places, 98 transitions, 376 flow. Second operand 4 states and 503 transitions. [2024-11-19 09:19:31,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 150 transitions, 824 flow [2024-11-19 09:19:31,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 150 transitions, 774 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-11-19 09:19:31,352 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 355 flow [2024-11-19 09:19:31,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=355, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-11-19 09:19:31,353 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -46 predicate places. [2024-11-19 09:19:31,353 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 355 flow [2024-11-19 09:19:31,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 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) [2024-11-19 09:19:31,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:31,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:31,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 09:19:31,354 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:31,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1440627542, now seen corresponding path program 1 times [2024-11-19 09:19:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593711465] [2024-11-19 09:19:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:31,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:33,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:33,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593711465] [2024-11-19 09:19:33,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593711465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:33,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:33,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-19 09:19:33,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74132731] [2024-11-19 09:19:33,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:33,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 09:19:33,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:33,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 09:19:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2024-11-19 09:19:35,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2024-11-19 09:19:35,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 355 flow. Second operand has 20 states, 20 states have (on average 93.55) internal successors, (1871), 20 states have internal predecessors, (1871), 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) [2024-11-19 09:19:35,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:35,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2024-11-19 09:19:35,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:35,918 INFO L124 PetriNetUnfolderBase]: 1484/3127 cut-off events. [2024-11-19 09:19:35,918 INFO L125 PetriNetUnfolderBase]: For 1963/1963 co-relation queries the response was YES. [2024-11-19 09:19:35,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8007 conditions, 3127 events. 1484/3127 cut-off events. For 1963/1963 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 14996 event pairs, 211 based on Foata normal form. 0/3088 useless extension candidates. Maximal degree in co-relation 7986. Up to 906 conditions per place. [2024-11-19 09:19:35,930 INFO L140 encePairwiseOnDemand]: 149/172 looper letters, 151 selfloop transitions, 22 changer transitions 16/208 dead transitions. [2024-11-19 09:19:35,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 208 transitions, 1151 flow [2024-11-19 09:19:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 09:19:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 09:19:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1719 transitions. [2024-11-19 09:19:35,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5878932968536251 [2024-11-19 09:19:35,934 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 355 flow. Second operand 17 states and 1719 transitions. [2024-11-19 09:19:35,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 208 transitions, 1151 flow [2024-11-19 09:19:35,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 208 transitions, 1101 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 09:19:35,941 INFO L231 Difference]: Finished difference. Result has 131 places, 99 transitions, 403 flow [2024-11-19 09:19:35,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=403, PETRI_PLACES=131, PETRI_TRANSITIONS=99} [2024-11-19 09:19:35,942 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -31 predicate places. [2024-11-19 09:19:35,942 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 99 transitions, 403 flow [2024-11-19 09:19:35,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 93.55) internal successors, (1871), 20 states have internal predecessors, (1871), 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) [2024-11-19 09:19:35,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:35,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:35,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 09:19:35,944 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:35,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:35,944 INFO L85 PathProgramCache]: Analyzing trace with hash -834086596, now seen corresponding path program 1 times [2024-11-19 09:19:35,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:35,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235130054] [2024-11-19 09:19:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:19:35,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:19:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:39,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:39,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235130054] [2024-11-19 09:19:39,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235130054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:39,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:39,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-19 09:19:39,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413836929] [2024-11-19 09:19:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:39,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 09:19:39,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 09:19:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2024-11-19 09:19:42,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-19 09:19:42,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 99 transitions, 403 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 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) [2024-11-19 09:19:42,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:42,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-19 09:19:42,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:43,891 INFO L124 PetriNetUnfolderBase]: 1764/3762 cut-off events. [2024-11-19 09:19:43,891 INFO L125 PetriNetUnfolderBase]: For 2238/2240 co-relation queries the response was YES. [2024-11-19 09:19:43,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9824 conditions, 3762 events. 1764/3762 cut-off events. For 2238/2240 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19887 event pairs, 393 based on Foata normal form. 0/3711 useless extension candidates. Maximal degree in co-relation 9801. Up to 2440 conditions per place. [2024-11-19 09:19:43,905 INFO L140 encePairwiseOnDemand]: 144/172 looper letters, 155 selfloop transitions, 50 changer transitions 20/246 dead transitions. [2024-11-19 09:19:43,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 246 transitions, 1420 flow [2024-11-19 09:19:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 09:19:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 09:19:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2785 transitions. [2024-11-19 09:19:43,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782807308970099 [2024-11-19 09:19:43,912 INFO L175 Difference]: Start difference. First operand has 131 places, 99 transitions, 403 flow. Second operand 28 states and 2785 transitions. [2024-11-19 09:19:43,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 246 transitions, 1420 flow [2024-11-19 09:19:43,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 246 transitions, 1340 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-11-19 09:19:43,923 INFO L231 Difference]: Finished difference. Result has 162 places, 145 transitions, 807 flow [2024-11-19 09:19:43,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=807, PETRI_PLACES=162, PETRI_TRANSITIONS=145} [2024-11-19 09:19:43,927 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 0 predicate places. [2024-11-19 09:19:43,927 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 145 transitions, 807 flow [2024-11-19 09:19:43,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 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) [2024-11-19 09:19:43,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:43,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:43,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-19 09:19:43,929 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:43,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:43,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1652023936, now seen corresponding path program 2 times [2024-11-19 09:19:43,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:43,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519236521] [2024-11-19 09:19:43,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:19:43,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:43,968 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:19:43,969 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:19:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:47,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:47,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519236521] [2024-11-19 09:19:47,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519236521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:47,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:47,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-19 09:19:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592466644] [2024-11-19 09:19:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:47,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 09:19:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 09:19:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2024-11-19 09:19:50,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-19 09:19:50,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 145 transitions, 807 flow. Second operand has 26 states, 26 states have (on average 93.96153846153847) internal successors, (2443), 26 states have internal predecessors, (2443), 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) [2024-11-19 09:19:50,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:19:50,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-19 09:19:50,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:19:52,610 INFO L124 PetriNetUnfolderBase]: 2003/4287 cut-off events. [2024-11-19 09:19:52,610 INFO L125 PetriNetUnfolderBase]: For 6149/6149 co-relation queries the response was YES. [2024-11-19 09:19:52,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12704 conditions, 4287 events. 2003/4287 cut-off events. For 6149/6149 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 23709 event pairs, 448 based on Foata normal form. 0/4232 useless extension candidates. Maximal degree in co-relation 12663. Up to 2761 conditions per place. [2024-11-19 09:19:52,628 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 192 selfloop transitions, 47 changer transitions 22/282 dead transitions. [2024-11-19 09:19:52,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 282 transitions, 1972 flow [2024-11-19 09:19:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 09:19:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 09:19:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2775 transitions. [2024-11-19 09:19:52,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5762043189368771 [2024-11-19 09:19:52,633 INFO L175 Difference]: Start difference. First operand has 162 places, 145 transitions, 807 flow. Second operand 28 states and 2775 transitions. [2024-11-19 09:19:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 282 transitions, 1972 flow [2024-11-19 09:19:52,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 282 transitions, 1966 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:19:52,655 INFO L231 Difference]: Finished difference. Result has 203 places, 179 transitions, 1270 flow [2024-11-19 09:19:52,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1270, PETRI_PLACES=203, PETRI_TRANSITIONS=179} [2024-11-19 09:19:52,657 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 41 predicate places. [2024-11-19 09:19:52,657 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 179 transitions, 1270 flow [2024-11-19 09:19:52,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 93.96153846153847) internal successors, (2443), 26 states have internal predecessors, (2443), 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) [2024-11-19 09:19:52,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:19:52,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:19:52,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 09:19:52,659 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:19:52,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:19:52,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1478671306, now seen corresponding path program 3 times [2024-11-19 09:19:52,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:19:52,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539324543] [2024-11-19 09:19:52,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:19:52,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:19:52,704 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:19:52,704 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:19:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:19:55,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:19:55,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539324543] [2024-11-19 09:19:55,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539324543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:19:55,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:19:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-19 09:19:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362807746] [2024-11-19 09:19:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:19:55,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 09:19:55,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:19:55,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 09:19:55,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-11-19 09:20:00,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-19 09:20:00,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 179 transitions, 1270 flow. Second operand has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 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) [2024-11-19 09:20:00,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:20:00,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-19 09:20:00,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:20:02,389 INFO L124 PetriNetUnfolderBase]: 2242/4799 cut-off events. [2024-11-19 09:20:02,389 INFO L125 PetriNetUnfolderBase]: For 15157/15157 co-relation queries the response was YES. [2024-11-19 09:20:02,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15969 conditions, 4799 events. 2242/4799 cut-off events. For 15157/15157 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 27670 event pairs, 491 based on Foata normal form. 0/4738 useless extension candidates. Maximal degree in co-relation 15911. Up to 3193 conditions per place. [2024-11-19 09:20:02,426 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 226 selfloop transitions, 49 changer transitions 23/319 dead transitions. [2024-11-19 09:20:02,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 319 transitions, 2657 flow [2024-11-19 09:20:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 09:20:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-19 09:20:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2780 transitions. [2024-11-19 09:20:02,431 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5772425249169435 [2024-11-19 09:20:02,431 INFO L175 Difference]: Start difference. First operand has 203 places, 179 transitions, 1270 flow. Second operand 28 states and 2780 transitions. [2024-11-19 09:20:02,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 319 transitions, 2657 flow [2024-11-19 09:20:02,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 319 transitions, 2550 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-11-19 09:20:02,475 INFO L231 Difference]: Finished difference. Result has 242 places, 213 transitions, 1740 flow [2024-11-19 09:20:02,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1740, PETRI_PLACES=242, PETRI_TRANSITIONS=213} [2024-11-19 09:20:02,476 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 80 predicate places. [2024-11-19 09:20:02,476 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 213 transitions, 1740 flow [2024-11-19 09:20:02,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.88888888888889) internal successors, (2535), 27 states have internal predecessors, (2535), 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) [2024-11-19 09:20:02,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:20:02,477 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:20:02,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 09:20:02,478 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-19 09:20:02,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:20:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1339628274, now seen corresponding path program 4 times [2024-11-19 09:20:02,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:20:02,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324116325] [2024-11-19 09:20:02,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:20:02,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:20:02,546 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:20:02,546 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat