./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/weaver/chl-nzb-file-trans.wvr.c -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 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:20:52,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:20:52,304 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:20:52,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:20:52,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:20:52,323 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:20:52,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:20:52,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:20:52,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:20:52,324 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:20:52,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:20:52,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:20:52,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:20:52,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:20:52,325 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:20:52,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:20:52,325 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:20:52,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:20:52,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:20:52,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:20:52,325 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:20:52,325 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:20:52,327 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:20:52,328 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:20:52,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:20:52,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:20:52,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:20:52,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:20:52,329 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2025-03-09 01:20:52,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:20:52,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:20:52,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:20:52,552 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:20:52,552 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:20:52,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-03-09 01:20:53,636 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06e10139c/0919dedd6c4b4c6ba4696bf8ec107e05/FLAGf6ef57c1a [2025-03-09 01:20:53,909 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:20:53,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-03-09 01:20:53,918 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06e10139c/0919dedd6c4b4c6ba4696bf8ec107e05/FLAGf6ef57c1a [2025-03-09 01:20:54,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06e10139c/0919dedd6c4b4c6ba4696bf8ec107e05 [2025-03-09 01:20:54,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:20:54,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:20:54,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:20:54,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:20:54,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:20:54,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ea8090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54, skipping insertion in model container [2025-03-09 01:20:54,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,237 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:20:54,380 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 01:20:54,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:20:54,388 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:20:54,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:20:54,437 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:20:54,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54 WrapperNode [2025-03-09 01:20:54,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:20:54,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:20:54,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:20:54,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:20:54,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,476 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 593 [2025-03-09 01:20:54,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:20:54,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:20:54,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:20:54,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:20:54,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,500 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-09 01:20:54,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,519 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:20:54,530 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:20:54,530 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:20:54,530 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:20:54,531 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (1/1) ... [2025-03-09 01:20:54,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:20:54,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:20:54,559 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) [2025-03-09 01:20:54,565 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 [2025-03-09 01:20:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:20:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:20:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:20:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:20:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:20:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 01:20:54,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 01:20:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:20:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 01:20:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 01:20:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 01:20:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 01:20:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:20:54,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:20:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 01:20:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 01:20:54,583 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:20:54,691 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:20:54,692 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:20:55,395 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:20:55,395 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:20:55,808 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:20:55,809 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:20:55,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:20:55 BoogieIcfgContainer [2025-03-09 01:20:55,810 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:20:55,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:20:55,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:20:55,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:20:55,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:20:54" (1/3) ... [2025-03-09 01:20:55,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576202d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:20:55, skipping insertion in model container [2025-03-09 01:20:55,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:20:54" (2/3) ... [2025-03-09 01:20:55,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576202d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:20:55, skipping insertion in model container [2025-03-09 01:20:55,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:20:55" (3/3) ... [2025-03-09 01:20:55,818 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2025-03-09 01:20:55,829 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:20:55,830 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-nzb-file-trans.wvr.c that has 4 procedures, 157 locations, 1 initial locations, 6 loop locations, and 56 error locations. [2025-03-09 01:20:55,831 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:20:55,927 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 01:20:55,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 186 transitions, 393 flow [2025-03-09 01:20:56,008 INFO L124 PetriNetUnfolderBase]: 30/183 cut-off events. [2025-03-09 01:20:56,009 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 01:20:56,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 30/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 724 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 162. Up to 2 conditions per place. [2025-03-09 01:20:56,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 186 transitions, 393 flow [2025-03-09 01:20:56,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 182 transitions, 382 flow [2025-03-09 01:20:56,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:20:56,036 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;@55d2a788, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:20:56,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 107 error locations. [2025-03-09 01:20:56,040 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:20:56,041 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2025-03-09 01:20:56,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 01:20:56,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:20:56,041 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 01:20:56,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2025-03-09 01:20:56,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:20:56,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1702794, now seen corresponding path program 1 times [2025-03-09 01:20:56,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:20:56,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417683837] [2025-03-09 01:20:56,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:20:56,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:20:56,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 01:20:56,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 01:20:56,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:20:56,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:20:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:20:56,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:20:56,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417683837] [2025-03-09 01:20:56,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417683837] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:20:56,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:20:56,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 01:20:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144147494] [2025-03-09 01:20:56,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:20:56,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:20:56,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:20:56,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:20:56,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:20:56,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2025-03-09 01:20:56,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 182 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2025-03-09 01:20:56,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:20:56,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2025-03-09 01:20:56,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:01,953 INFO L124 PetriNetUnfolderBase]: 49598/89287 cut-off events. [2025-03-09 01:21:01,953 INFO L125 PetriNetUnfolderBase]: For 1204/1204 co-relation queries the response was YES. [2025-03-09 01:21:02,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153712 conditions, 89287 events. 49598/89287 cut-off events. For 1204/1204 co-relation queries the response was YES. Maximal size of possible extension queue 2254. Compared 849617 event pairs, 29352 based on Foata normal form. 1/71865 useless extension candidates. Maximal degree in co-relation 150410. Up to 63479 conditions per place. [2025-03-09 01:21:02,507 INFO L140 encePairwiseOnDemand]: 177/186 looper letters, 84 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2025-03-09 01:21:02,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 174 transitions, 538 flow [2025-03-09 01:21:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:21:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:21:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2025-03-09 01:21:02,521 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2025-03-09 01:21:02,523 INFO L175 Difference]: Start difference. First operand has 162 places, 182 transitions, 382 flow. Second operand 3 states and 369 transitions. [2025-03-09 01:21:02,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 174 transitions, 538 flow [2025-03-09 01:21:02,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 174 transitions, 526 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-09 01:21:02,536 INFO L231 Difference]: Finished difference. Result has 153 places, 174 transitions, 358 flow [2025-03-09 01:21:02,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=153, PETRI_TRANSITIONS=174} [2025-03-09 01:21:02,540 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -9 predicate places. [2025-03-09 01:21:02,540 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 174 transitions, 358 flow [2025-03-09 01:21:02,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2025-03-09 01:21:02,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:02,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 01:21:02,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:21:02,541 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2025-03-09 01:21:02,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:02,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1702795, now seen corresponding path program 1 times [2025-03-09 01:21:02,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:02,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843428337] [2025-03-09 01:21:02,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:02,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:02,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 01:21:02,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 01:21:02,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:02,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:02,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:02,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843428337] [2025-03-09 01:21:02,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843428337] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:02,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:02,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:21:02,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379240465] [2025-03-09 01:21:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:02,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:21:02,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:02,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:21:02,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:21:02,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2025-03-09 01:21:02,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 174 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2025-03-09 01:21:02,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:02,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2025-03-09 01:21:02,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:07,812 INFO L124 PetriNetUnfolderBase]: 49601/89296 cut-off events. [2025-03-09 01:21:07,813 INFO L125 PetriNetUnfolderBase]: For 294/294 co-relation queries the response was YES. [2025-03-09 01:21:07,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153112 conditions, 89296 events. 49601/89296 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 2254. Compared 849680 event pairs, 29352 based on Foata normal form. 0/71869 useless extension candidates. Maximal degree in co-relation 153062. Up to 63492 conditions per place. [2025-03-09 01:21:08,319 INFO L140 encePairwiseOnDemand]: 176/186 looper letters, 91 selfloop transitions, 7 changer transitions 0/183 dead transitions. [2025-03-09 01:21:08,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 183 transitions, 574 flow [2025-03-09 01:21:08,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:21:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:21:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2025-03-09 01:21:08,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6756272401433692 [2025-03-09 01:21:08,325 INFO L175 Difference]: Start difference. First operand has 153 places, 174 transitions, 358 flow. Second operand 3 states and 377 transitions. [2025-03-09 01:21:08,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 183 transitions, 574 flow [2025-03-09 01:21:08,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 183 transitions, 568 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:08,331 INFO L231 Difference]: Finished difference. Result has 155 places, 180 transitions, 412 flow [2025-03-09 01:21:08,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=155, PETRI_TRANSITIONS=180} [2025-03-09 01:21:08,333 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -7 predicate places. [2025-03-09 01:21:08,333 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 180 transitions, 412 flow [2025-03-09 01:21:08,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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) [2025-03-09 01:21:08,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:08,333 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2025-03-09 01:21:08,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:21:08,334 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2025-03-09 01:21:08,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1636435870, now seen corresponding path program 1 times [2025-03-09 01:21:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:08,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108979427] [2025-03-09 01:21:08,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:08,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:08,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 01:21:08,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 01:21:08,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:08,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:08,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:08,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108979427] [2025-03-09 01:21:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108979427] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:08,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126190994] [2025-03-09 01:21:08,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:08,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:08,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:08,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:21:08,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 01:21:08,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 01:21:08,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 01:21:08,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:08,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:08,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:21:08,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:08,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:21:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:08,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:08,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126190994] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:08,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:08,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2025-03-09 01:21:08,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384388405] [2025-03-09 01:21:08,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:08,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 01:21:08,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:08,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 01:21:08,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-09 01:21:09,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2025-03-09 01:21:09,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 180 transitions, 412 flow. Second operand has 9 states, 9 states have (on average 93.66666666666667) internal successors, (843), 9 states have internal predecessors, (843), 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) [2025-03-09 01:21:09,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:09,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2025-03-09 01:21:09,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:14,388 INFO L124 PetriNetUnfolderBase]: 49610/89323 cut-off events. [2025-03-09 01:21:14,388 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2025-03-09 01:21:14,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153211 conditions, 89323 events. 49610/89323 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 2254. Compared 849927 event pairs, 29352 based on Foata normal form. 0/71900 useless extension candidates. Maximal degree in co-relation 153062. Up to 63495 conditions per place. [2025-03-09 01:21:14,818 INFO L140 encePairwiseOnDemand]: 176/186 looper letters, 100 selfloop transitions, 25 changer transitions 0/210 dead transitions. [2025-03-09 01:21:14,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 210 transitions, 770 flow [2025-03-09 01:21:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:21:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:21:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 686 transitions. [2025-03-09 01:21:14,820 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6146953405017921 [2025-03-09 01:21:14,820 INFO L175 Difference]: Start difference. First operand has 155 places, 180 transitions, 412 flow. Second operand 6 states and 686 transitions. [2025-03-09 01:21:14,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 210 transitions, 770 flow [2025-03-09 01:21:14,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 210 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:14,824 INFO L231 Difference]: Finished difference. Result has 161 places, 198 transitions, 573 flow [2025-03-09 01:21:14,824 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=161, PETRI_TRANSITIONS=198} [2025-03-09 01:21:14,825 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, -1 predicate places. [2025-03-09 01:21:14,825 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 198 transitions, 573 flow [2025-03-09 01:21:14,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 93.66666666666667) internal successors, (843), 9 states have internal predecessors, (843), 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) [2025-03-09 01:21:14,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:14,826 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:14,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 01:21:15,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:15,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2025-03-09 01:21:15,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1434413843, now seen corresponding path program 1 times [2025-03-09 01:21:15,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:15,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289657847] [2025-03-09 01:21:15,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:15,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:15,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 01:21:15,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 01:21:15,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:15,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:15,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:15,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289657847] [2025-03-09 01:21:15,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289657847] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:15,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:15,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:21:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467403408] [2025-03-09 01:21:15,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:15,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:21:15,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:15,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:21:15,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:21:15,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 186 [2025-03-09 01:21:15,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 198 transitions, 573 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2025-03-09 01:21:15,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:15,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 186 [2025-03-09 01:21:15,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:20,615 INFO L124 PetriNetUnfolderBase]: 49607/89320 cut-off events. [2025-03-09 01:21:20,615 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2025-03-09 01:21:20,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153244 conditions, 89320 events. 49607/89320 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 2253. Compared 849879 event pairs, 29352 based on Foata normal form. 3/71903 useless extension candidates. Maximal degree in co-relation 153141. Up to 63509 conditions per place. [2025-03-09 01:21:21,203 INFO L140 encePairwiseOnDemand]: 179/186 looper letters, 98 selfloop transitions, 12 changer transitions 0/198 dead transitions. [2025-03-09 01:21:21,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 198 transitions, 785 flow [2025-03-09 01:21:21,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:21:21,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:21:21,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2025-03-09 01:21:21,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6810035842293907 [2025-03-09 01:21:21,205 INFO L175 Difference]: Start difference. First operand has 161 places, 198 transitions, 573 flow. Second operand 3 states and 380 transitions. [2025-03-09 01:21:21,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 198 transitions, 785 flow [2025-03-09 01:21:21,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 198 transitions, 749 flow, removed 12 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:21,209 INFO L231 Difference]: Finished difference. Result has 162 places, 195 transitions, 547 flow [2025-03-09 01:21:21,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=547, PETRI_PLACES=162, PETRI_TRANSITIONS=195} [2025-03-09 01:21:21,210 INFO L279 CegarLoopForPetriNet]: 162 programPoint places, 0 predicate places. [2025-03-09 01:21:21,210 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 195 transitions, 547 flow [2025-03-09 01:21:21,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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) [2025-03-09 01:21:21,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:21,210 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2025-03-09 01:21:21,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:21:21,210 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2025-03-09 01:21:21,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1074435927, now seen corresponding path program 2 times [2025-03-09 01:21:21,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:21,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418331140] [2025-03-09 01:21:21,211 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:21,228 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-09 01:21:21,241 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 01:21:21,241 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:21,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:21,681 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:21,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418331140] [2025-03-09 01:21:21,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418331140] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:21,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496296386] [2025-03-09 01:21:21,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:21,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:21,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:21,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:21:21,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 01:21:21,748 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-09 01:21:21,771 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 01:21:21,772 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:21,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:21,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-09 01:21:21,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:21,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 01:21:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:21,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:21,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496296386] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:21,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:21,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2025-03-09 01:21:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535886000] [2025-03-09 01:21:21,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:21,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 01:21:21,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:21,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 01:21:21,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2025-03-09 01:21:22,880 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2025-03-09 01:21:22,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 195 transitions, 547 flow. Second operand has 18 states, 18 states have (on average 93.83333333333333) internal successors, (1689), 18 states have internal predecessors, (1689), 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) [2025-03-09 01:21:22,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:22,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2025-03-09 01:21:22,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand