./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:45:26,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:45:26,725 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:45:26,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:45:26,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:45:26,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:45:26,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:45:26,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:45:26,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:45:26,757 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:45:26,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:45:26,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:45:26,759 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:45:26,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:45:26,761 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:45:26,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:45:26,762 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:45:26,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:45:26,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:45:26,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:45:26,763 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:45:26,763 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:45:26,764 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:45:26,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:45:26,764 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:45:26,765 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:45:26,765 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:45:26,765 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:45:26,766 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:45:26,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:45:26,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:45:26,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:45:26,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:45:26,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:45:26,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:45:26,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:45:26,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:45:26,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:45:26,770 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:45:26,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:45:26,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:45:26,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:45:26,771 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2024-11-19 09:45:27,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:45:27,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:45:27,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:45:27,040 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:45:27,041 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:45:27,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-19 09:45:28,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:45:28,695 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:45:28,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-19 09:45:28,704 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27c66af4/502a3cead5f542b28ed29e7d1051e0a0/FLAG6898af6c4 [2024-11-19 09:45:28,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27c66af4/502a3cead5f542b28ed29e7d1051e0a0 [2024-11-19 09:45:28,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:45:28,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:45:28,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:45:28,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:45:28,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:45:28,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:45:28" (1/1) ... [2024-11-19 09:45:28,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6956a8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:28, skipping insertion in model container [2024-11-19 09:45:28,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:45:28" (1/1) ... [2024-11-19 09:45:28,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:45:28,987 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 09:45:28,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:45:29,005 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:45:29,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:45:29,077 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:45:29,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29 WrapperNode [2024-11-19 09:45:29,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:45:29,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:45:29,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:45:29,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:45:29,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,149 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 605 [2024-11-19 09:45:29,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:45:29,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:45:29,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:45:29,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:45:29,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,174 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,223 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]. [2024-11-19 09:45:29,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:45:29,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:45:29,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:45:29,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:45:29,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (1/1) ... [2024-11-19 09:45:29,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:45:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:29,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:45:29,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:45:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:45:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:45:29,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:45:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:45:29,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:45:29,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 09:45:29,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 09:45:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:45:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:45:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:45:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:45:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 09:45:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:45:29,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:45:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:45:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:45:29,366 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:45:29,500 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:45:29,502 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:45:30,482 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:45:30,483 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:45:31,204 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:45:31,207 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 09:45:31,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:45:31 BoogieIcfgContainer [2024-11-19 09:45:31,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:45:31,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:45:31,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:45:31,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:45:31,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:45:28" (1/3) ... [2024-11-19 09:45:31,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1338d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:45:31, skipping insertion in model container [2024-11-19 09:45:31,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:29" (2/3) ... [2024-11-19 09:45:31,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1338d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:45:31, skipping insertion in model container [2024-11-19 09:45:31,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:45:31" (3/3) ... [2024-11-19 09:45:31,216 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2024-11-19 09:45:31,235 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:45:31,235 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-11-19 09:45:31,235 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:45:31,388 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 09:45:31,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 186 transitions, 393 flow [2024-11-19 09:45:31,498 INFO L124 PetriNetUnfolderBase]: 30/183 cut-off events. [2024-11-19 09:45:31,498 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:45:31,506 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 705 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. [2024-11-19 09:45:31,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 186 transitions, 393 flow [2024-11-19 09:45:31,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 182 transitions, 382 flow [2024-11-19 09:45:31,524 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:45:31,532 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;@7cdb915, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:45:31,533 INFO L334 AbstractCegarLoop]: Starting to check reachability of 107 error locations. [2024-11-19 09:45:31,539 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:45:31,539 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-19 09:45:31,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:45:31,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:31,540 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:45:31,543 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-19 09:45:31,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:31,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1898607, now seen corresponding path program 1 times [2024-11-19 09:45:31,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:31,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116624427] [2024-11-19 09:45:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:31,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:31,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:31,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116624427] [2024-11-19 09:45:31,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116624427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:31,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:31,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:45:31,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058687113] [2024-11-19 09:45:31,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:31,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:45:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:31,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:45:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:45:32,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-11-19 09:45:32,017 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) [2024-11-19 09:45:32,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:32,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-11-19 09:45:32,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:40,477 INFO L124 PetriNetUnfolderBase]: 49592/89310 cut-off events. [2024-11-19 09:45:40,478 INFO L125 PetriNetUnfolderBase]: For 1203/1203 co-relation queries the response was YES. [2024-11-19 09:45:40,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153743 conditions, 89310 events. 49592/89310 cut-off events. For 1203/1203 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 852846 event pairs, 29501 based on Foata normal form. 1/71582 useless extension candidates. Maximal degree in co-relation 150436. Up to 63484 conditions per place. [2024-11-19 09:45:41,315 INFO L140 encePairwiseOnDemand]: 177/186 looper letters, 84 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2024-11-19 09:45:41,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 174 transitions, 538 flow [2024-11-19 09:45:41,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:45:41,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:45:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2024-11-19 09:45:41,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-19 09:45:41,335 INFO L175 Difference]: Start difference. First operand has 162 places, 182 transitions, 382 flow. Second operand 3 states and 369 transitions. [2024-11-19 09:45:41,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 174 transitions, 538 flow [2024-11-19 09:45:41,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 174 transitions, 526 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 09:45:41,368 INFO L231 Difference]: Finished difference. Result has 153 places, 174 transitions, 358 flow [2024-11-19 09:45:41,371 INFO L260 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} [2024-11-19 09:45:41,376 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -9 predicate places. [2024-11-19 09:45:41,377 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 174 transitions, 358 flow [2024-11-19 09:45:41,377 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) [2024-11-19 09:45:41,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:41,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:45:41,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:45:41,378 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-19 09:45:41,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1898608, now seen corresponding path program 1 times [2024-11-19 09:45:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:41,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390191821] [2024-11-19 09:45:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:41,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:41,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:41,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:41,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390191821] [2024-11-19 09:45:41,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390191821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:41,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:41,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:45:41,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411965753] [2024-11-19 09:45:41,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:41,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:45:41,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:41,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:45:41,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:45:41,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-11-19 09:45:41,763 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) [2024-11-19 09:45:41,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:41,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-11-19 09:45:41,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:48,059 INFO L124 PetriNetUnfolderBase]: 49592/89316 cut-off events. [2024-11-19 09:45:48,060 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2024-11-19 09:45:48,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153134 conditions, 89316 events. 49592/89316 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 852855 event pairs, 29501 based on Foata normal form. 1/71586 useless extension candidates. Maximal degree in co-relation 153091. Up to 63496 conditions per place. [2024-11-19 09:45:48,604 INFO L140 encePairwiseOnDemand]: 176/186 looper letters, 89 selfloop transitions, 6 changer transitions 0/180 dead transitions. [2024-11-19 09:45:48,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 180 transitions, 560 flow [2024-11-19 09:45:48,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:45:48,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:45:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2024-11-19 09:45:48,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756272401433692 [2024-11-19 09:45:48,611 INFO L175 Difference]: Start difference. First operand has 153 places, 174 transitions, 358 flow. Second operand 3 states and 377 transitions. [2024-11-19 09:45:48,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 180 transitions, 560 flow [2024-11-19 09:45:48,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 180 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:45:48,618 INFO L231 Difference]: Finished difference. Result has 154 places, 177 transitions, 392 flow [2024-11-19 09:45:48,619 INFO L260 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=154, PETRI_TRANSITIONS=177} [2024-11-19 09:45:48,620 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -8 predicate places. [2024-11-19 09:45:48,620 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 177 transitions, 392 flow [2024-11-19 09:45:48,622 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) [2024-11-19 09:45:48,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:48,622 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-19 09:45:48,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:45:48,622 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-19 09:45:48,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1824625386, now seen corresponding path program 1 times [2024-11-19 09:45:48,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:48,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341654157] [2024-11-19 09:45:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:48,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341654157] [2024-11-19 09:45:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341654157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001969906] [2024-11-19 09:45:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:48,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:48,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:48,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:45:48,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:45:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:48,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:45:48,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:49,027 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 [2024-11-19 09:45:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:49,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:45:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:49,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001969906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:45:49,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:45:49,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-19 09:45:49,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903824849] [2024-11-19 09:45:49,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:45:49,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 09:45:49,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:49,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 09:45:49,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:45:49,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-11-19 09:45:49,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 177 transitions, 392 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) [2024-11-19 09:45:49,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:49,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-11-19 09:45:49,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:56,444 INFO L124 PetriNetUnfolderBase]: 49598/89340 cut-off events. [2024-11-19 09:45:56,445 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2024-11-19 09:45:56,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153212 conditions, 89340 events. 49598/89340 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 852773 event pairs, 29501 based on Foata normal form. 3/71614 useless extension candidates. Maximal degree in co-relation 153123. Up to 63498 conditions per place. [2024-11-19 09:45:56,969 INFO L140 encePairwiseOnDemand]: 176/186 looper letters, 98 selfloop transitions, 21 changer transitions 0/204 dead transitions. [2024-11-19 09:45:56,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 204 transitions, 718 flow [2024-11-19 09:45:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:45:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:45:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 683 transitions. [2024-11-19 09:45:56,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6120071684587813 [2024-11-19 09:45:56,972 INFO L175 Difference]: Start difference. First operand has 154 places, 177 transitions, 392 flow. Second operand 6 states and 683 transitions. [2024-11-19 09:45:56,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 204 transitions, 718 flow [2024-11-19 09:45:56,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 204 transitions, 708 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:45:56,976 INFO L231 Difference]: Finished difference. Result has 161 places, 192 transitions, 538 flow [2024-11-19 09:45:56,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=538, PETRI_PLACES=161, PETRI_TRANSITIONS=192} [2024-11-19 09:45:56,977 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -1 predicate places. [2024-11-19 09:45:56,978 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 192 transitions, 538 flow [2024-11-19 09:45:56,978 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) [2024-11-19 09:45:56,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:56,979 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-11-19 09:45:56,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:45:57,179 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 [2024-11-19 09:45:57,180 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-19 09:45:57,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1428790104, now seen corresponding path program 2 times [2024-11-19 09:45:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:57,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939432415] [2024-11-19 09:45:57,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:45:57,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:57,215 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:45:57,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:45:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:57,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:57,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939432415] [2024-11-19 09:45:57,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939432415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:57,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885001080] [2024-11-19 09:45:57,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:45:57,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:57,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:57,619 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) [2024-11-19 09:45:57,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:45:57,727 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:45:57,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:45:57,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 09:45:57,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:57,757 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 8 treesize of output 1 [2024-11-19 09:45:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:57,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:45:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:58,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885001080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:45:58,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:45:58,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-19 09:45:58,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336174300] [2024-11-19 09:45:58,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:45:58,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:45:58,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:58,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:45:58,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:45:59,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-11-19 09:45:59,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 192 transitions, 538 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) [2024-11-19 09:45:59,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:59,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-11-19 09:45:59,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:06,639 INFO L124 PetriNetUnfolderBase]: 49601/89346 cut-off events. [2024-11-19 09:46:06,639 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-11-19 09:46:06,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153273 conditions, 89346 events. 49601/89346 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 853094 event pairs, 29501 based on Foata normal form. 6/71626 useless extension candidates. Maximal degree in co-relation 153155. Up to 63487 conditions per place. [2024-11-19 09:46:07,247 INFO L140 encePairwiseOnDemand]: 173/186 looper letters, 91 selfloop transitions, 34 changer transitions 0/210 dead transitions. [2024-11-19 09:46:07,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 210 transitions, 824 flow [2024-11-19 09:46:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:46:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:46:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 959 transitions. [2024-11-19 09:46:07,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.572879330943847 [2024-11-19 09:46:07,251 INFO L175 Difference]: Start difference. First operand has 161 places, 192 transitions, 538 flow. Second operand 9 states and 959 transitions. [2024-11-19 09:46:07,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 210 transitions, 824 flow [2024-11-19 09:46:07,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 210 transitions, 738 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-19 09:46:07,257 INFO L231 Difference]: Finished difference. Result has 162 places, 198 transitions, 550 flow [2024-11-19 09:46:07,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=162, PETRI_TRANSITIONS=198} [2024-11-19 09:46:07,258 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 0 predicate places. [2024-11-19 09:46:07,258 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 198 transitions, 550 flow [2024-11-19 09:46:07,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-19 09:46:07,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:07,260 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:07,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:46:07,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 09:46:07,465 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-19 09:46:07,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash -670094395, now seen corresponding path program 1 times [2024-11-19 09:46:07,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:07,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973389210] [2024-11-19 09:46:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:07,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 09:46:07,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:07,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973389210] [2024-11-19 09:46:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973389210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529759447] [2024-11-19 09:46:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:07,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:07,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:07,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:07,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:46:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:08,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:46:08,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 09:46:08,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 09:46:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529759447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:08,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 09:46:08,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907275804] [2024-11-19 09:46:08,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:08,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:46:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:08,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:46:08,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:46:08,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 186 [2024-11-19 09:46:08,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 198 transitions, 550 flow. Second operand has 11 states, 11 states have (on average 97.63636363636364) internal successors, (1074), 11 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:08,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:08,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 186 [2024-11-19 09:46:08,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand