./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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_longest.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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:20:47,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:20:47,939 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:20:47,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:20:47,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:20:47,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:20:47,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:20:47,974 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:20:47,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:20:47,976 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:20:47,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:20:47,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:20:47,978 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:20:47,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:20:47,982 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:20:47,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:20:47,982 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:20:47,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:20:47,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:20:47,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:20:47,983 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:20:47,983 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:20:47,984 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:20:47,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:20:47,984 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:20:47,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:20:47,985 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:20:47,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:20:47,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:20:47,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:20:47,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:20:47,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:20:47,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:20:47,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:20:47,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:20:47,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:20:47,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:20:47,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:20:47,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:20:47,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:20:47,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:20:47,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:20:47,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2024-11-09 10:20:48,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:20:48,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:20:48,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:20:48,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:20:48,267 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:20:48,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longest.i [2024-11-09 10:20:49,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:20:50,039 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:20:50,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-11-09 10:20:50,060 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813a5d02f/19ab65d75df2436fb8244ca38b619f8c/FLAG840419498 [2024-11-09 10:20:50,347 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813a5d02f/19ab65d75df2436fb8244ca38b619f8c [2024-11-09 10:20:50,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:20:50,350 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:20:50,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:20:50,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:20:50,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:20:50,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:20:50" (1/1) ... [2024-11-09 10:20:50,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e1fdd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:50, skipping insertion in model container [2024-11-09 10:20:50,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:20:50" (1/1) ... [2024-11-09 10:20:50,416 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:20:50,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:20:50,940 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:20:51,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:20:51,196 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:20:51,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51 WrapperNode [2024-11-09 10:20:51,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:20:51,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:20:51,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:20:51,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:20:51,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,264 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,368 INFO L138 Inliner]: procedures = 274, calls = 1659, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1846 [2024-11-09 10:20:51,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:20:51,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:20:51,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:20:51,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:20:51,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,473 INFO L175 MemorySlicer]: Split 1644 memory accesses to 4 slices as follows [2, 5, 803, 834]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 800, 803]. The 16 writes are split as follows [0, 0, 2, 14]. [2024-11-09 10:20:51,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,475 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,516 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:20:51,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:20:51,569 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:20:51,569 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:20:51,570 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (1/1) ... [2024-11-09 10:20:51,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:20:51,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:20:51,609 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) [2024-11-09 10:20:51,612 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 [2024-11-09 10:20:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 10:20:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 10:20:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 10:20:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 10:20:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:20:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:20:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:20:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 10:20:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 10:20:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:20:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:20:51,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:20:51,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 10:20:51,662 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:20:51,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:20:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:20:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:20:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:20:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 10:20:51,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:20:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:20:51,665 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:20:51,836 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:20:51,838 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:20:53,924 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:20:53,925 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:21:25,921 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:21:25,922 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:21:25,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:21:25 BoogieIcfgContainer [2024-11-09 10:21:25,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:21:25,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:21:25,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:21:25,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:21:25,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:20:50" (1/3) ... [2024-11-09 10:21:25,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ef1b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:21:25, skipping insertion in model container [2024-11-09 10:21:25,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:20:51" (2/3) ... [2024-11-09 10:21:25,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ef1b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:21:25, skipping insertion in model container [2024-11-09 10:21:25,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:21:25" (3/3) ... [2024-11-09 10:21:25,931 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2024-11-09 10:21:25,949 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:21:25,950 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-09 10:21:25,950 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:21:26,126 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:21:26,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 358 flow [2024-11-09 10:21:26,323 INFO L124 PetriNetUnfolderBase]: 14/170 cut-off events. [2024-11-09 10:21:26,323 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:21:26,331 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 524 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. [2024-11-09 10:21:26,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 172 transitions, 358 flow [2024-11-09 10:21:26,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 169 transitions, 350 flow [2024-11-09 10:21:26,354 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:21:26,362 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;@7caf3df4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:21:26,363 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-11-09 10:21:26,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:21:26,442 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-09 10:21:26,443 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:21:26,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:26,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:21:26,444 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)] === [2024-11-09 10:21:26,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash 124458, now seen corresponding path program 1 times [2024-11-09 10:21:26,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:26,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762378643] [2024-11-09 10:21:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:26,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:27,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762378643] [2024-11-09 10:21:27,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762378643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:27,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:27,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:21:27,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674401075] [2024-11-09 10:21:27,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:27,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:27,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:27,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-09 10:21:27,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2024-11-09 10:21:27,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:27,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-09 10:21:27,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:28,868 INFO L124 PetriNetUnfolderBase]: 1744/4653 cut-off events. [2024-11-09 10:21:28,868 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-09 10:21:28,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7479 conditions, 4653 events. 1744/4653 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37036 event pairs, 1393 based on Foata normal form. 182/3587 useless extension candidates. Maximal degree in co-relation 7362. Up to 2745 conditions per place. [2024-11-09 10:21:28,918 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 58 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-11-09 10:21:28,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 154 transitions, 440 flow [2024-11-09 10:21:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2024-11-09 10:21:28,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7015503875968992 [2024-11-09 10:21:28,939 INFO L175 Difference]: Start difference. First operand has 162 places, 169 transitions, 350 flow. Second operand 3 states and 362 transitions. [2024-11-09 10:21:28,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 154 transitions, 440 flow [2024-11-09 10:21:28,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 432 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:21:28,953 INFO L231 Difference]: Finished difference. Result has 151 places, 154 transitions, 316 flow [2024-11-09 10:21:28,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=151, PETRI_TRANSITIONS=154} [2024-11-09 10:21:28,961 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -11 predicate places. [2024-11-09 10:21:28,962 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 154 transitions, 316 flow [2024-11-09 10:21:28,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2024-11-09 10:21:28,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:28,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-09 10:21:28,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:21:28,964 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)] === [2024-11-09 10:21:28,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash 124459, now seen corresponding path program 1 times [2024-11-09 10:21:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235987995] [2024-11-09 10:21:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:30,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:30,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235987995] [2024-11-09 10:21:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235987995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:30,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:30,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:21:30,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283365042] [2024-11-09 10:21:30,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:30,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:30,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:30,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:30,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-09 10:21:30,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 154 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2024-11-09 10:21:30,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:30,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-09 10:21:30,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:30,677 INFO L124 PetriNetUnfolderBase]: 1744/4650 cut-off events. [2024-11-09 10:21:30,678 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-09 10:21:30,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7430 conditions, 4650 events. 1744/4650 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37031 event pairs, 1393 based on Foata normal form. 3/3407 useless extension candidates. Maximal degree in co-relation 7419. Up to 2745 conditions per place. [2024-11-09 10:21:30,716 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 58 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-11-09 10:21:30,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 430 flow [2024-11-09 10:21:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-11-09 10:21:30,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2024-11-09 10:21:30,720 INFO L175 Difference]: Start difference. First operand has 151 places, 154 transitions, 316 flow. Second operand 3 states and 357 transitions. [2024-11-09 10:21:30,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 430 flow [2024-11-09 10:21:30,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:21:30,725 INFO L231 Difference]: Finished difference. Result has 148 places, 151 transitions, 310 flow [2024-11-09 10:21:30,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=148, PETRI_TRANSITIONS=151} [2024-11-09 10:21:30,726 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -14 predicate places. [2024-11-09 10:21:30,727 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 151 transitions, 310 flow [2024-11-09 10:21:30,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2024-11-09 10:21:30,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:30,728 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 10:21:30,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:21:30,729 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)] === [2024-11-09 10:21:30,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:30,731 INFO L85 PathProgramCache]: Analyzing trace with hash -583390690, now seen corresponding path program 1 times [2024-11-09 10:21:30,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:30,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887172228] [2024-11-09 10:21:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:30,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:31,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:31,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887172228] [2024-11-09 10:21:31,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887172228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:31,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:31,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:21:31,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153932] [2024-11-09 10:21:31,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:31,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:21:31,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:21:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:21:31,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-09 10:21:31,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 151 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2024-11-09 10:21:31,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:31,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-09 10:21:31,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:32,290 INFO L124 PetriNetUnfolderBase]: 1744/4648 cut-off events. [2024-11-09 10:21:32,290 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:21:32,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 4648 events. 1744/4648 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36978 event pairs, 1393 based on Foata normal form. 0/3405 useless extension candidates. Maximal degree in co-relation 7418. Up to 2744 conditions per place. [2024-11-09 10:21:32,334 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 60 selfloop transitions, 3 changer transitions 0/149 dead transitions. [2024-11-09 10:21:32,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 149 transitions, 432 flow [2024-11-09 10:21:32,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 437 transitions. [2024-11-09 10:21:32,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6351744186046512 [2024-11-09 10:21:32,338 INFO L175 Difference]: Start difference. First operand has 148 places, 151 transitions, 310 flow. Second operand 4 states and 437 transitions. [2024-11-09 10:21:32,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 149 transitions, 432 flow [2024-11-09 10:21:32,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 149 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:21:32,341 INFO L231 Difference]: Finished difference. Result has 147 places, 149 transitions, 308 flow [2024-11-09 10:21:32,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=147, PETRI_TRANSITIONS=149} [2024-11-09 10:21:32,342 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -15 predicate places. [2024-11-09 10:21:32,343 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 149 transitions, 308 flow [2024-11-09 10:21:32,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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) [2024-11-09 10:21:32,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:32,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 10:21:32,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:21:32,344 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)] === [2024-11-09 10:21:32,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:32,345 INFO L85 PathProgramCache]: Analyzing trace with hash -583390689, now seen corresponding path program 1 times [2024-11-09 10:21:32,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:32,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307612487] [2024-11-09 10:21:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:32,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:33,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:33,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307612487] [2024-11-09 10:21:33,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307612487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:33,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:33,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928974450] [2024-11-09 10:21:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:33,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:33,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:33,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-09 10:21:33,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 149 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2024-11-09 10:21:33,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:33,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-09 10:21:33,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:33,906 INFO L124 PetriNetUnfolderBase]: 1744/4646 cut-off events. [2024-11-09 10:21:33,906 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-09 10:21:33,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 4646 events. 1744/4646 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36986 event pairs, 1393 based on Foata normal form. 2/3405 useless extension candidates. Maximal degree in co-relation 7412. Up to 2744 conditions per place. [2024-11-09 10:21:33,942 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 57 selfloop transitions, 3 changer transitions 0/147 dead transitions. [2024-11-09 10:21:33,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 147 transitions, 424 flow [2024-11-09 10:21:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2024-11-09 10:21:33,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6656976744186046 [2024-11-09 10:21:33,945 INFO L175 Difference]: Start difference. First operand has 147 places, 149 transitions, 308 flow. Second operand 4 states and 458 transitions. [2024-11-09 10:21:33,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 147 transitions, 424 flow [2024-11-09 10:21:33,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 147 transitions, 418 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:33,950 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 304 flow [2024-11-09 10:21:33,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2024-11-09 10:21:33,953 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -17 predicate places. [2024-11-09 10:21:33,954 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 304 flow [2024-11-09 10:21:33,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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) [2024-11-09 10:21:33,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:33,954 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:33,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:21:33,954 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:33,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:33,955 INFO L85 PathProgramCache]: Analyzing trace with hash 298605087, now seen corresponding path program 1 times [2024-11-09 10:21:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328488483] [2024-11-09 10:21:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:33,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:34,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328488483] [2024-11-09 10:21:34,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328488483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:34,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:34,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:21:34,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575146225] [2024-11-09 10:21:34,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:34,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:21:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:34,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:21:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:21:34,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 172 [2024-11-09 10:21:34,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2024-11-09 10:21:34,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:34,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 172 [2024-11-09 10:21:34,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:35,309 INFO L124 PetriNetUnfolderBase]: 2019/4463 cut-off events. [2024-11-09 10:21:35,309 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-09 10:21:35,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7727 conditions, 4463 events. 2019/4463 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 31627 event pairs, 705 based on Foata normal form. 0/3899 useless extension candidates. Maximal degree in co-relation 7710. Up to 1807 conditions per place. [2024-11-09 10:21:35,344 INFO L140 encePairwiseOnDemand]: 150/172 looper letters, 81 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-11-09 10:21:35,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 150 transitions, 485 flow [2024-11-09 10:21:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:21:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:21:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2024-11-09 10:21:35,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-09 10:21:35,347 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 304 flow. Second operand 5 states and 473 transitions. [2024-11-09 10:21:35,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 150 transitions, 485 flow [2024-11-09 10:21:35,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 150 transitions, 479 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:35,350 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 278 flow [2024-11-09 10:21:35,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2024-11-09 10:21:35,353 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -32 predicate places. [2024-11-09 10:21:35,353 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 278 flow [2024-11-09 10:21:35,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2024-11-09 10:21:35,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:35,356 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:35,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:21:35,357 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:35,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash 298605088, now seen corresponding path program 1 times [2024-11-09 10:21:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:35,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54389634] [2024-11-09 10:21:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:35,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:36,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:36,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54389634] [2024-11-09 10:21:36,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54389634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:36,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:36,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:36,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022815969] [2024-11-09 10:21:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:36,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:36,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:36,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 172 [2024-11-09 10:21:36,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2024-11-09 10:21:36,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:36,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 172 [2024-11-09 10:21:36,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:36,895 INFO L124 PetriNetUnfolderBase]: 1703/3676 cut-off events. [2024-11-09 10:21:36,896 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-09 10:21:36,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6548 conditions, 3676 events. 1703/3676 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 24500 event pairs, 702 based on Foata normal form. 204/3341 useless extension candidates. Maximal degree in co-relation 2518. Up to 1414 conditions per place. [2024-11-09 10:21:36,921 INFO L140 encePairwiseOnDemand]: 153/172 looper letters, 74 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2024-11-09 10:21:36,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 136 transitions, 447 flow [2024-11-09 10:21:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2024-11-09 10:21:36,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6409883720930233 [2024-11-09 10:21:36,923 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 278 flow. Second operand 4 states and 441 transitions. [2024-11-09 10:21:36,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 136 transitions, 447 flow [2024-11-09 10:21:36,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 136 transitions, 435 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:21:36,927 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 248 flow [2024-11-09 10:21:36,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2024-11-09 10:21:36,929 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -47 predicate places. [2024-11-09 10:21:36,930 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 248 flow [2024-11-09 10:21:36,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2024-11-09 10:21:36,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:36,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:36,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:21:36,931 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:36,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:36,932 INFO L85 PathProgramCache]: Analyzing trace with hash 666827081, now seen corresponding path program 1 times [2024-11-09 10:21:36,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:36,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370695097] [2024-11-09 10:21:36,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:36,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:38,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370695097] [2024-11-09 10:21:38,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370695097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:38,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:38,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:21:38,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973042725] [2024-11-09 10:21:38,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:38,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:21:38,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:38,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:21:38,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:21:39,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 172 [2024-11-09 10:21:39,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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) [2024-11-09 10:21:39,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:39,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 172 [2024-11-09 10:21:39,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:40,272 INFO L124 PetriNetUnfolderBase]: 2502/5392 cut-off events. [2024-11-09 10:21:40,272 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-09 10:21:40,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 5392 events. 2502/5392 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 38728 event pairs, 536 based on Foata normal form. 0/4394 useless extension candidates. Maximal degree in co-relation 3717. Up to 3436 conditions per place. [2024-11-09 10:21:40,305 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 125 selfloop transitions, 11 changer transitions 0/184 dead transitions. [2024-11-09 10:21:40,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 184 transitions, 659 flow [2024-11-09 10:21:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:21:40,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:21:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2024-11-09 10:21:40,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5506644518272426 [2024-11-09 10:21:40,308 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 248 flow. Second operand 7 states and 663 transitions. [2024-11-09 10:21:40,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 184 transitions, 659 flow [2024-11-09 10:21:40,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 184 transitions, 647 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:40,314 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 312 flow [2024-11-09 10:21:40,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=312, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2024-11-09 10:21:40,315 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -40 predicate places. [2024-11-09 10:21:40,316 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 312 flow [2024-11-09 10:21:40,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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) [2024-11-09 10:21:40,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:40,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:40,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:21:40,317 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:40,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:40,317 INFO L85 PathProgramCache]: Analyzing trace with hash 533229479, now seen corresponding path program 1 times [2024-11-09 10:21:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422061069] [2024-11-09 10:21:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:40,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422061069] [2024-11-09 10:21:40,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422061069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:40,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:40,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:21:40,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372366048] [2024-11-09 10:21:40,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:40,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:21:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:21:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:21:41,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 172 [2024-11-09 10:21:41,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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) [2024-11-09 10:21:41,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:41,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 172 [2024-11-09 10:21:41,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:41,830 INFO L124 PetriNetUnfolderBase]: 2427/5009 cut-off events. [2024-11-09 10:21:41,831 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-11-09 10:21:41,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9367 conditions, 5009 events. 2427/5009 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 34301 event pairs, 906 based on Foata normal form. 87/4642 useless extension candidates. Maximal degree in co-relation 9056. Up to 2023 conditions per place. [2024-11-09 10:21:41,865 INFO L140 encePairwiseOnDemand]: 160/172 looper letters, 109 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2024-11-09 10:21:41,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 158 transitions, 621 flow [2024-11-09 10:21:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:21:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:21:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 529 transitions. [2024-11-09 10:21:41,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6151162790697674 [2024-11-09 10:21:41,869 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 312 flow. Second operand 5 states and 529 transitions. [2024-11-09 10:21:41,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 158 transitions, 621 flow [2024-11-09 10:21:41,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 158 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:41,876 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 302 flow [2024-11-09 10:21:41,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2024-11-09 10:21:41,877 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -45 predicate places. [2024-11-09 10:21:41,878 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 302 flow [2024-11-09 10:21:41,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.33333333333333) internal successors, (518), 6 states have internal predecessors, (518), 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) [2024-11-09 10:21:41,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:41,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:41,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:21:41,879 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:41,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash 533229480, now seen corresponding path program 1 times [2024-11-09 10:21:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:41,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296141576] [2024-11-09 10:21:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:41,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:42,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296141576] [2024-11-09 10:21:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296141576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:42,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:42,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:42,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909723420] [2024-11-09 10:21:42,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:42,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:42,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:42,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-09 10:21:42,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2024-11-09 10:21:42,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:42,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-09 10:21:42,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:42,986 INFO L124 PetriNetUnfolderBase]: 1382/3055 cut-off events. [2024-11-09 10:21:42,986 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-09 10:21:42,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 3055 events. 1382/3055 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17488 event pairs, 703 based on Foata normal form. 55/2727 useless extension candidates. Maximal degree in co-relation 5504. Up to 1211 conditions per place. [2024-11-09 10:21:43,007 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 81 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-09 10:21:43,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 132 transitions, 470 flow [2024-11-09 10:21:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2024-11-09 10:21:43,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.751937984496124 [2024-11-09 10:21:43,010 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 302 flow. Second operand 3 states and 388 transitions. [2024-11-09 10:21:43,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 132 transitions, 470 flow [2024-11-09 10:21:43,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 132 transitions, 439 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-09 10:21:43,015 INFO L231 Difference]: Finished difference. Result has 107 places, 109 transitions, 235 flow [2024-11-09 10:21:43,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=104, 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=3, PETRI_FLOW=235, PETRI_PLACES=107, PETRI_TRANSITIONS=109} [2024-11-09 10:21:43,018 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -55 predicate places. [2024-11-09 10:21:43,018 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 109 transitions, 235 flow [2024-11-09 10:21:43,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2024-11-09 10:21:43,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:43,019 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] [2024-11-09 10:21:43,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:21:43,019 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:43,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:43,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1537482823, now seen corresponding path program 1 times [2024-11-09 10:21:43,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:43,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500181257] [2024-11-09 10:21:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:43,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:43,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:43,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:43,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500181257] [2024-11-09 10:21:43,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500181257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:43,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:43,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:21:43,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559069909] [2024-11-09 10:21:43,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:43,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:43,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:43,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 172 [2024-11-09 10:21:43,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 109 transitions, 235 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) [2024-11-09 10:21:43,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:43,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 172 [2024-11-09 10:21:43,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:44,008 INFO L124 PetriNetUnfolderBase]: 1392/3119 cut-off events. [2024-11-09 10:21:44,008 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-09 10:21:44,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 3119 events. 1392/3119 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18133 event pairs, 1089 based on Foata normal form. 0/2730 useless extension candidates. Maximal degree in co-relation 5497. Up to 2216 conditions per place. [2024-11-09 10:21:44,024 INFO L140 encePairwiseOnDemand]: 170/172 looper letters, 60 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2024-11-09 10:21:44,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 355 flow [2024-11-09 10:21:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:44,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2024-11-09 10:21:44,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6996124031007752 [2024-11-09 10:21:44,027 INFO L175 Difference]: Start difference. First operand has 107 places, 109 transitions, 235 flow. Second operand 3 states and 361 transitions. [2024-11-09 10:21:44,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 355 flow [2024-11-09 10:21:44,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 108 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:44,029 INFO L231 Difference]: Finished difference. Result has 107 places, 108 transitions, 232 flow [2024-11-09 10:21:44,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=107, PETRI_TRANSITIONS=108} [2024-11-09 10:21:44,031 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -55 predicate places. [2024-11-09 10:21:44,032 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 108 transitions, 232 flow [2024-11-09 10:21:44,032 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) [2024-11-09 10:21:44,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:44,032 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] [2024-11-09 10:21:44,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:21:44,033 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:44,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1537482824, now seen corresponding path program 1 times [2024-11-09 10:21:44,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:44,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577515437] [2024-11-09 10:21:44,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:44,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:44,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:44,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577515437] [2024-11-09 10:21:44,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577515437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:44,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:44,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:21:44,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767661574] [2024-11-09 10:21:44,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:44,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:44,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:44,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:44,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:44,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-09 10:21:44,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 108 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2024-11-09 10:21:44,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:44,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-09 10:21:44,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:44,936 INFO L124 PetriNetUnfolderBase]: 1392/3052 cut-off events. [2024-11-09 10:21:44,937 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-09 10:21:44,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5422 conditions, 3052 events. 1392/3052 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17376 event pairs, 1089 based on Foata normal form. 77/2795 useless extension candidates. Maximal degree in co-relation 5417. Up to 2216 conditions per place. [2024-11-09 10:21:44,953 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 60 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2024-11-09 10:21:44,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 348 flow [2024-11-09 10:21:44,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2024-11-09 10:21:44,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2024-11-09 10:21:44,955 INFO L175 Difference]: Start difference. First operand has 107 places, 108 transitions, 232 flow. Second operand 3 states and 357 transitions. [2024-11-09 10:21:44,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 348 flow [2024-11-09 10:21:44,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:44,962 INFO L231 Difference]: Finished difference. Result has 105 places, 105 transitions, 227 flow [2024-11-09 10:21:44,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=105, PETRI_TRANSITIONS=105} [2024-11-09 10:21:44,963 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -57 predicate places. [2024-11-09 10:21:44,963 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 105 transitions, 227 flow [2024-11-09 10:21:44,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2024-11-09 10:21:44,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:44,964 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] [2024-11-09 10:21:44,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:21:44,964 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:44,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash -417323187, now seen corresponding path program 1 times [2024-11-09 10:21:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127601513] [2024-11-09 10:21:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:45,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127601513] [2024-11-09 10:21:45,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127601513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:45,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:45,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:21:45,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652915531] [2024-11-09 10:21:45,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:45,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:21:45,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:45,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:21:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:21:45,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 172 [2024-11-09 10:21:45,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 105 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 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) [2024-11-09 10:21:45,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:45,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 172 [2024-11-09 10:21:45,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:46,149 INFO L124 PetriNetUnfolderBase]: 1409/3045 cut-off events. [2024-11-09 10:21:46,149 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-09 10:21:46,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 3045 events. 1409/3045 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17104 event pairs, 1074 based on Foata normal form. 0/2747 useless extension candidates. Maximal degree in co-relation 5443. Up to 2186 conditions per place. [2024-11-09 10:21:46,168 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 68 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2024-11-09 10:21:46,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 111 transitions, 384 flow [2024-11-09 10:21:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:21:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:21:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2024-11-09 10:21:46,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-11-09 10:21:46,171 INFO L175 Difference]: Start difference. First operand has 105 places, 105 transitions, 227 flow. Second operand 5 states and 538 transitions. [2024-11-09 10:21:46,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 111 transitions, 384 flow [2024-11-09 10:21:46,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:21:46,173 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 230 flow [2024-11-09 10:21:46,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2024-11-09 10:21:46,174 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -56 predicate places. [2024-11-09 10:21:46,175 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 230 flow [2024-11-09 10:21:46,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 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) [2024-11-09 10:21:46,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:46,175 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] [2024-11-09 10:21:46,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:21:46,176 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:46,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash -417323186, now seen corresponding path program 1 times [2024-11-09 10:21:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:46,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449739064] [2024-11-09 10:21:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:46,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:47,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449739064] [2024-11-09 10:21:47,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449739064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:47,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:47,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:21:47,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498352523] [2024-11-09 10:21:47,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:47,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:21:47,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:47,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:21:47,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:21:47,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 172 [2024-11-09 10:21:47,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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) [2024-11-09 10:21:47,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:47,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 172 [2024-11-09 10:21:47,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:47,677 INFO L124 PetriNetUnfolderBase]: 1392/3004 cut-off events. [2024-11-09 10:21:47,677 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-09 10:21:47,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5401 conditions, 3004 events. 1392/3004 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16788 event pairs, 1074 based on Foata normal form. 24/2730 useless extension candidates. Maximal degree in co-relation 5396. Up to 2187 conditions per place. [2024-11-09 10:21:47,690 INFO L140 encePairwiseOnDemand]: 167/172 looper letters, 66 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-11-09 10:21:47,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 109 transitions, 381 flow [2024-11-09 10:21:47,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:21:47,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:21:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2024-11-09 10:21:47,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-09 10:21:47,692 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 230 flow. Second operand 4 states and 466 transitions. [2024-11-09 10:21:47,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 109 transitions, 381 flow [2024-11-09 10:21:47,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 109 transitions, 373 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:21:47,694 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 224 flow [2024-11-09 10:21:47,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2024-11-09 10:21:47,695 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -59 predicate places. [2024-11-09 10:21:47,695 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 224 flow [2024-11-09 10:21:47,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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) [2024-11-09 10:21:47,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:47,696 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] [2024-11-09 10:21:47,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:21:47,696 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:47,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:47,696 INFO L85 PathProgramCache]: Analyzing trace with hash -52145603, now seen corresponding path program 1 times [2024-11-09 10:21:47,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:47,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545747244] [2024-11-09 10:21:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:47,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:47,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545747244] [2024-11-09 10:21:47,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545747244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:47,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:47,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:21:47,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586774115] [2024-11-09 10:21:47,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:47,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:21:47,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:47,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:21:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:21:47,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 172 [2024-11-09 10:21:47,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 224 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) [2024-11-09 10:21:47,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:47,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 172 [2024-11-09 10:21:47,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:48,618 INFO L124 PetriNetUnfolderBase]: 1380/2992 cut-off events. [2024-11-09 10:21:48,618 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-09 10:21:48,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 2992 events. 1380/2992 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16803 event pairs, 1074 based on Foata normal form. 0/2706 useless extension candidates. Maximal degree in co-relation 5371. Up to 2176 conditions per place. [2024-11-09 10:21:48,630 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 66 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2024-11-09 10:21:48,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 108 transitions, 375 flow [2024-11-09 10:21:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:21:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:21:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2024-11-09 10:21:48,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7189922480620154 [2024-11-09 10:21:48,632 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 224 flow. Second operand 3 states and 371 transitions. [2024-11-09 10:21:48,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 108 transitions, 375 flow [2024-11-09 10:21:48,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 369 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:21:48,634 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 220 flow [2024-11-09 10:21:48,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-11-09 10:21:48,635 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -60 predicate places. [2024-11-09 10:21:48,635 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 220 flow [2024-11-09 10:21:48,636 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) [2024-11-09 10:21:48,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:48,636 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] [2024-11-09 10:21:48,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:21:48,636 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:48,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:48,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2118830185, now seen corresponding path program 1 times [2024-11-09 10:21:48,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:48,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378688227] [2024-11-09 10:21:48,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:48,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:21:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:21:50,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:21:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378688227] [2024-11-09 10:21:50,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378688227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:21:50,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:21:50,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 10:21:50,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643147501] [2024-11-09 10:21:50,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:21:50,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 10:21:50,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:21:50,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 10:21:50,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 10:21:51,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2024-11-09 10:21:51,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 220 flow. Second operand has 9 states, 9 states have (on average 94.44444444444444) internal successors, (850), 9 states have internal predecessors, (850), 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) [2024-11-09 10:21:51,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:21:51,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2024-11-09 10:21:51,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:21:51,628 INFO L124 PetriNetUnfolderBase]: 1717/3481 cut-off events. [2024-11-09 10:21:51,628 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-09 10:21:51,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6486 conditions, 3481 events. 1717/3481 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 19037 event pairs, 388 based on Foata normal form. 0/3243 useless extension candidates. Maximal degree in co-relation 6481. Up to 2364 conditions per place. [2024-11-09 10:21:51,643 INFO L140 encePairwiseOnDemand]: 159/172 looper letters, 117 selfloop transitions, 12 changer transitions 0/160 dead transitions. [2024-11-09 10:21:51,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 160 transitions, 608 flow [2024-11-09 10:21:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:21:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:21:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 957 transitions. [2024-11-09 10:21:51,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6182170542635659 [2024-11-09 10:21:51,646 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 220 flow. Second operand 9 states and 957 transitions. [2024-11-09 10:21:51,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 160 transitions, 608 flow [2024-11-09 10:21:51,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 160 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:21:51,649 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 252 flow [2024-11-09 10:21:51,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2024-11-09 10:21:51,650 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -54 predicate places. [2024-11-09 10:21:51,650 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 252 flow [2024-11-09 10:21:51,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 94.44444444444444) internal successors, (850), 9 states have internal predecessors, (850), 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) [2024-11-09 10:21:51,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:21:51,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:21:51,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:21:51,651 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-09 10:21:51,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:21:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1353576422, now seen corresponding path program 1 times [2024-11-09 10:21:51,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:21:51,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623051449] [2024-11-09 10:21:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:21:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:21:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat