./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 c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-?-c7c6ca5-m [2024-11-09 10:47:15,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:47:15,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:47:15,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:47:15,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:47:15,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:47:15,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:47:15,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:47:15,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:47:15,260 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:47:15,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:47:15,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:47:15,261 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:47:15,262 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:47:15,264 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:47:15,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:47:15,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:47:15,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:47:15,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:47:15,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:47:15,268 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:47:15,271 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:47:15,271 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:47:15,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:47:15,272 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:47:15,272 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:47:15,272 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:47:15,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:47:15,273 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:47:15,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:47:15,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:47:15,274 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:47:15,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:47:15,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:47:15,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:47:15,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:47:15,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:47:15,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:47:15,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:47:15,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:47:15,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:47:15,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:47:15,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2024-11-09 10:47:15,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:47:15,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:47:15,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:47:15,589 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:47:15,590 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:47:15,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-09 10:47:17,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:47:17,249 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:47:17,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2024-11-09 10:47:17,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21004e587/6f3c976972c14fc89c83ee0ee47d59f2/FLAG144421b07 [2024-11-09 10:47:17,634 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21004e587/6f3c976972c14fc89c83ee0ee47d59f2 [2024-11-09 10:47:17,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:47:17,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:47:17,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:47:17,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:47:17,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:47:17,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:47:17" (1/1) ... [2024-11-09 10:47:17,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1568b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:17, skipping insertion in model container [2024-11-09 10:47:17,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:47:17" (1/1) ... [2024-11-09 10:47:17,680 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:47:17,926 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:47:17,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:47:17,941 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:47:17,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:47:18,008 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:47:18,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18 WrapperNode [2024-11-09 10:47:18,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:47:18,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:47:18,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:47:18,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:47:18,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,082 INFO L138 Inliner]: procedures = 25, calls = 62, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 605 [2024-11-09 10:47:18,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:47:18,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:47:18,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:47:18,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:47:18,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,138 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]. [2024-11-09 10:47:18,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:47:18,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:47:18,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:47:18,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:47:18,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (1/1) ... [2024-11-09 10:47:18,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:47:18,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:47:18,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:47:18,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:47:18,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:47:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:47:18,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:47:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:47:18,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:47:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 10:47:18,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 10:47:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:47:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:47:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:47:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:47:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:47:18,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:47:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:47:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:47:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:47:18,304 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:47:18,463 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:47:18,465 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:47:19,496 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:47:19,497 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:47:20,222 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:47:20,222 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 10:47:20,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:47:20 BoogieIcfgContainer [2024-11-09 10:47:20,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:47:20,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:47:20,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:47:20,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:47:20,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:47:17" (1/3) ... [2024-11-09 10:47:20,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257d5aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:47:20, skipping insertion in model container [2024-11-09 10:47:20,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:47:18" (2/3) ... [2024-11-09 10:47:20,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257d5aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:47:20, skipping insertion in model container [2024-11-09 10:47:20,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:47:20" (3/3) ... [2024-11-09 10:47:20,230 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2024-11-09 10:47:20,248 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:47:20,249 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-11-09 10:47:20,249 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:47:20,380 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 10:47:20,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 186 transitions, 393 flow [2024-11-09 10:47:20,514 INFO L124 PetriNetUnfolderBase]: 30/183 cut-off events. [2024-11-09 10:47:20,515 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 10:47:20,524 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. [2024-11-09 10:47:20,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 186 transitions, 393 flow [2024-11-09 10:47:20,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 182 transitions, 382 flow [2024-11-09 10:47:20,550 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:47:20,558 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;@1cd9e5c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:47:20,558 INFO L334 AbstractCegarLoop]: Starting to check reachability of 107 error locations. [2024-11-09 10:47:20,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:47:20,563 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-09 10:47:20,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:47:20,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:47:20,565 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:47:20,566 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-09 10:47:20,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:47:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1898607, now seen corresponding path program 1 times [2024-11-09 10:47:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:47:20,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401303434] [2024-11-09 10:47:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:47:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:47:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:47:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:47:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:47:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401303434] [2024-11-09 10:47:20,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401303434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:47:20,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:47:20,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:47:20,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393022200] [2024-11-09 10:47:20,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:47:20,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:47:20,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:47:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:47:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:47:21,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-11-09 10:47:21,066 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) [2024-11-09 10:47:21,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:47:21,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-11-09 10:47:21,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:47:29,347 INFO L124 PetriNetUnfolderBase]: 49592/89310 cut-off events. [2024-11-09 10:47:29,347 INFO L125 PetriNetUnfolderBase]: For 1203/1203 co-relation queries the response was YES. [2024-11-09 10:47:29,568 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. [2024-11-09 10:47:30,136 INFO L140 encePairwiseOnDemand]: 177/186 looper letters, 84 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2024-11-09 10:47:30,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 174 transitions, 538 flow [2024-11-09 10:47:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:47:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:47:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2024-11-09 10:47:30,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-09 10:47:30,155 INFO L175 Difference]: Start difference. First operand has 162 places, 182 transitions, 382 flow. Second operand 3 states and 369 transitions. [2024-11-09 10:47:30,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 174 transitions, 538 flow [2024-11-09 10:47:30,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 174 transitions, 526 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 10:47:30,175 INFO L231 Difference]: Finished difference. Result has 153 places, 174 transitions, 358 flow [2024-11-09 10:47:30,177 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} [2024-11-09 10:47:30,181 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -9 predicate places. [2024-11-09 10:47:30,183 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 174 transitions, 358 flow [2024-11-09 10:47:30,184 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) [2024-11-09 10:47:30,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:47:30,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:47:30,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:47:30,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-09 10:47:30,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:47:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1898608, now seen corresponding path program 1 times [2024-11-09 10:47:30,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:47:30,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381760839] [2024-11-09 10:47:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:47:30,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:47:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:47:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:47:30,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:47:30,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381760839] [2024-11-09 10:47:30,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381760839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:47:30,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:47:30,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:47:30,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497838370] [2024-11-09 10:47:30,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:47:30,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:47:30,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:47:30,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:47:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:47:30,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-11-09 10:47:30,623 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) [2024-11-09 10:47:30,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:47:30,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-11-09 10:47:30,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:47:37,340 INFO L124 PetriNetUnfolderBase]: 49592/89316 cut-off events. [2024-11-09 10:47:37,340 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2024-11-09 10:47:37,499 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. [2024-11-09 10:47:37,943 INFO L140 encePairwiseOnDemand]: 176/186 looper letters, 89 selfloop transitions, 6 changer transitions 0/180 dead transitions. [2024-11-09 10:47:37,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 180 transitions, 560 flow [2024-11-09 10:47:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:47:37,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:47:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2024-11-09 10:47:37,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756272401433692 [2024-11-09 10:47:37,950 INFO L175 Difference]: Start difference. First operand has 153 places, 174 transitions, 358 flow. Second operand 3 states and 377 transitions. [2024-11-09 10:47:37,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 180 transitions, 560 flow [2024-11-09 10:47:37,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 180 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:47:37,959 INFO L231 Difference]: Finished difference. Result has 154 places, 177 transitions, 392 flow [2024-11-09 10:47:37,960 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} [2024-11-09 10:47:37,962 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -8 predicate places. [2024-11-09 10:47:37,962 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 177 transitions, 392 flow [2024-11-09 10:47:37,963 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) [2024-11-09 10:47:37,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:47:37,963 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-09 10:47:37,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:47:37,964 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-09 10:47:37,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:47:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1824625386, now seen corresponding path program 1 times [2024-11-09 10:47:37,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:47:37,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243395016] [2024-11-09 10:47:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:47:37,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:47:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:47:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:47:38,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:47:38,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243395016] [2024-11-09 10:47:38,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243395016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:47:38,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771263845] [2024-11-09 10:47:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:47:38,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:47:38,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:47:38,235 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) [2024-11-09 10:47:38,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:47:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:47:38,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:47:38,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:47:38,421 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 [2024-11-09 10:47:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:47:38,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:47:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:47:38,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771263845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:47:38,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:47:38,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2024-11-09 10:47:38,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606730208] [2024-11-09 10:47:38,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:47:38,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 10:47:38,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:47:38,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 10:47:38,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-09 10:47:38,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-11-09 10:47:38,854 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) [2024-11-09 10:47:38,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:47:38,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-11-09 10:47:38,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:47:46,156 INFO L124 PetriNetUnfolderBase]: 49598/89340 cut-off events. [2024-11-09 10:47:46,156 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2024-11-09 10:47:46,350 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. [2024-11-09 10:47:46,771 INFO L140 encePairwiseOnDemand]: 176/186 looper letters, 98 selfloop transitions, 21 changer transitions 0/204 dead transitions. [2024-11-09 10:47:46,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 204 transitions, 718 flow [2024-11-09 10:47:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:47:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:47:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 683 transitions. [2024-11-09 10:47:46,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6120071684587813 [2024-11-09 10:47:46,775 INFO L175 Difference]: Start difference. First operand has 154 places, 177 transitions, 392 flow. Second operand 6 states and 683 transitions. [2024-11-09 10:47:46,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 204 transitions, 718 flow [2024-11-09 10:47:46,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 204 transitions, 708 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:47:46,780 INFO L231 Difference]: Finished difference. Result has 161 places, 192 transitions, 538 flow [2024-11-09 10:47:46,781 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} [2024-11-09 10:47:46,782 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -1 predicate places. [2024-11-09 10:47:46,782 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 192 transitions, 538 flow [2024-11-09 10:47:46,782 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) [2024-11-09 10:47:46,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:47:46,783 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-11-09 10:47:46,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:47:46,987 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 [2024-11-09 10:47:46,988 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-09 10:47:46,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:47:46,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1428790104, now seen corresponding path program 2 times [2024-11-09 10:47:46,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:47:46,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413913796] [2024-11-09 10:47:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:47:46,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:47:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:47:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:47:47,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:47:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413913796] [2024-11-09 10:47:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413913796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:47:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272934300] [2024-11-09 10:47:47,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:47:47,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:47:47,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:47:47,404 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) [2024-11-09 10:47:47,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:47:47,520 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:47:47,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:47:47,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 10:47:47,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:47:47,548 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 [2024-11-09 10:47:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:47:47,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:47:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:47:47,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272934300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:47:47,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:47:47,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-09 10:47:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936747235] [2024-11-09 10:47:47,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:47:47,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:47:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:47:47,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:47:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:47:49,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-11-09 10:47:49,505 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) [2024-11-09 10:47:49,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:47:49,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-11-09 10:47:49,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:47:57,515 INFO L124 PetriNetUnfolderBase]: 49592/89340 cut-off events. [2024-11-09 10:47:57,515 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-11-09 10:47:57,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153249 conditions, 89340 events. 49592/89340 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 852910 event pairs, 29501 based on Foata normal form. 12/71626 useless extension candidates. Maximal degree in co-relation 153121. Up to 63496 conditions per place. [2024-11-09 10:47:58,076 INFO L140 encePairwiseOnDemand]: 176/186 looper letters, 101 selfloop transitions, 18 changer transitions 0/204 dead transitions. [2024-11-09 10:47:58,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 204 transitions, 782 flow [2024-11-09 10:47:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:47:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:47:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 775 transitions. [2024-11-09 10:47:58,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-09 10:47:58,079 INFO L175 Difference]: Start difference. First operand has 161 places, 192 transitions, 538 flow. Second operand 7 states and 775 transitions. [2024-11-09 10:47:58,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 204 transitions, 782 flow [2024-11-09 10:47:58,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 204 transitions, 758 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-09 10:47:58,085 INFO L231 Difference]: Finished difference. Result has 167 places, 189 transitions, 546 flow [2024-11-09 10:47:58,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=167, PETRI_TRANSITIONS=189} [2024-11-09 10:47:58,086 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, 5 predicate places. [2024-11-09 10:47:58,086 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 189 transitions, 546 flow [2024-11-09 10:47:58,088 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) [2024-11-09 10:47:58,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:47:58,088 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1] [2024-11-09 10:47:58,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 10:47:58,292 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 [2024-11-09 10:47:58,293 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 104 more)] === [2024-11-09 10:47:58,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:47:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1322181678, now seen corresponding path program 3 times [2024-11-09 10:47:58,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:47:58,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311899210] [2024-11-09 10:47:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:47:58,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:47:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:47:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:47:58,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:47:58,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311899210] [2024-11-09 10:47:58,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311899210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:47:58,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120231601] [2024-11-09 10:47:58,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:47:58,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:47:58,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:47:58,504 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) [2024-11-09 10:47:58,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:47:58,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:47:58,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:47:58,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:47:58,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:47:58,629 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 [2024-11-09 10:47:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 10:47:58,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:47:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 10:47:59,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120231601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:47:59,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:47:59,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 13 [2024-11-09 10:47:59,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359527784] [2024-11-09 10:47:59,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:47:59,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:47:59,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:47:59,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:47:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:47:59,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2024-11-09 10:47:59,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 189 transitions, 546 flow. Second operand has 14 states, 14 states have (on average 93.78571428571429) internal successors, (1313), 14 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:47:59,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:47:59,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2024-11-09 10:47:59,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand