./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20a2c57970e5e291ffc10826c9a5fbe3296a1e55ae86cfd2b786718aae571bfa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:16:38,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:16:38,701 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:16:38,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:16:38,707 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:16:38,727 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:16:38,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:16:38,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:16:38,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:16:38,729 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:16:38,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:16:38,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:16:38,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:16:38,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:16:38,731 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:16:38,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:16:38,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:16:38,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:16:38,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:16:38,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:16:38,732 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:16:38,733 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:16:38,733 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:16:38,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:16:38,733 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:16:38,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:16:38,734 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:16:38,734 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:16:38,734 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:16:38,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:16:38,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:16:38,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:16:38,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:16:38,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:16:38,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:16:38,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:16:38,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:16:38,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:16:38,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:16:38,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:16:38,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:16:38,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:16:38,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20a2c57970e5e291ffc10826c9a5fbe3296a1e55ae86cfd2b786718aae571bfa [2024-10-13 12:16:39,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:16:39,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:16:39,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:16:39,043 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:16:39,044 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:16:39,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_tso.i [2024-10-13 12:16:40,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:16:40,571 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:16:40,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_tso.i [2024-10-13 12:16:40,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bd46f8e/4f70bc8d3d1a424d872252d35da9c7e4/FLAG5b49b2d1a [2024-10-13 12:16:40,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2bd46f8e/4f70bc8d3d1a424d872252d35da9c7e4 [2024-10-13 12:16:40,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:16:40,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:16:40,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:16:40,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:16:40,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:16:40,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:16:40" (1/1) ... [2024-10-13 12:16:40,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418af3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:40, skipping insertion in model container [2024-10-13 12:16:40,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:16:40" (1/1) ... [2024-10-13 12:16:40,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:16:41,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:16:41,065 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:16:41,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:16:41,172 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:16:41,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41 WrapperNode [2024-10-13 12:16:41,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:16:41,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:16:41,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:16:41,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:16:41,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,235 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 171 [2024-10-13 12:16:41,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:16:41,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:16:41,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:16:41,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:16:41,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,268 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 12:16:41,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:16:41,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:16:41,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:16:41,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:16:41,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (1/1) ... [2024-10-13 12:16:41,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:16:41,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:16:41,334 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) [2024-10-13 12:16:41,337 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 [2024-10-13 12:16:41,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:16:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:16:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-13 12:16:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-13 12:16:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-13 12:16:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-13 12:16:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-13 12:16:41,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-13 12:16:41,380 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-13 12:16:41,381 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-13 12:16:41,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:16:41,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:16:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:16:41,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:16:41,384 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:16:41,602 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:16:41,604 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:16:41,970 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:16:41,970 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:16:42,138 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:16:42,138 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 12:16:42,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:16:42 BoogieIcfgContainer [2024-10-13 12:16:42,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:16:42,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:16:42,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:16:42,145 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:16:42,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:16:40" (1/3) ... [2024-10-13 12:16:42,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a72b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:16:42, skipping insertion in model container [2024-10-13 12:16:42,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:16:41" (2/3) ... [2024-10-13 12:16:42,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a72b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:16:42, skipping insertion in model container [2024-10-13 12:16:42,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:16:42" (3/3) ... [2024-10-13 12:16:42,150 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_tso.i [2024-10-13 12:16:42,166 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:16:42,167 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-13 12:16:42,167 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:16:42,217 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:16:42,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 54 transitions, 124 flow [2024-10-13 12:16:42,301 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 12:16:42,302 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:16:42,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 2/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-10-13 12:16:42,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 54 transitions, 124 flow [2024-10-13 12:16:42,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 50 transitions, 112 flow [2024-10-13 12:16:42,323 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:16:42,338 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;@1c7d165c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:16:42,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-13 12:16:42,351 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:16:42,352 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-10-13 12:16:42,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:16:42,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:16:42,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:16:42,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:16:42,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:16:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash -695178262, now seen corresponding path program 1 times [2024-10-13 12:16:42,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:16:42,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964497605] [2024-10-13 12:16:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:16:42,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:16:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:16:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:16:42,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:16:42,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964497605] [2024-10-13 12:16:42,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964497605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:16:42,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:16:42,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:16:42,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592493429] [2024-10-13 12:16:42,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:16:42,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:16:42,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:16:42,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:16:42,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:16:42,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2024-10-13 12:16:42,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-10-13 12:16:42,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:16:42,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2024-10-13 12:16:42,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:16:43,477 INFO L124 PetriNetUnfolderBase]: 1323/2219 cut-off events. [2024-10-13 12:16:43,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:16:43,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4163 conditions, 2219 events. 1323/2219 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 15785 event pairs, 219 based on Foata normal form. 120/2298 useless extension candidates. Maximal degree in co-relation 4151. Up to 1537 conditions per place. [2024-10-13 12:16:43,506 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 32 selfloop transitions, 2 changer transitions 2/58 dead transitions. [2024-10-13 12:16:43,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 200 flow [2024-10-13 12:16:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:16:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:16:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-13 12:16:43,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7345679012345679 [2024-10-13 12:16:43,521 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 119 transitions. [2024-10-13 12:16:43,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 200 flow [2024-10-13 12:16:43,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 196 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:16:43,529 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 102 flow [2024-10-13 12:16:43,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-10-13 12:16:43,573 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-10-13 12:16:43,573 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 102 flow [2024-10-13 12:16:43,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-10-13 12:16:43,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:16:43,574 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:16:43,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:16:43,575 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:16:43,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:16:43,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1262996493, now seen corresponding path program 1 times [2024-10-13 12:16:43,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:16:43,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505189456] [2024-10-13 12:16:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:16:43,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:16:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:16:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:16:43,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:16:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505189456] [2024-10-13 12:16:43,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505189456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:16:43,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:16:43,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:16:43,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050852562] [2024-10-13 12:16:43,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:16:43,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:16:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:16:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:16:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:16:43,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2024-10-13 12:16:43,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-13 12:16:43,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:16:43,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2024-10-13 12:16:43,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:16:43,999 INFO L124 PetriNetUnfolderBase]: 1175/2011 cut-off events. [2024-10-13 12:16:44,003 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-10-13 12:16:44,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3841 conditions, 2011 events. 1175/2011 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 14568 event pairs, 1175 based on Foata normal form. 60/2006 useless extension candidates. Maximal degree in co-relation 3831. Up to 1692 conditions per place. [2024-10-13 12:16:44,027 INFO L140 encePairwiseOnDemand]: 52/54 looper letters, 21 selfloop transitions, 1 changer transitions 1/44 dead transitions. [2024-10-13 12:16:44,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 44 transitions, 146 flow [2024-10-13 12:16:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:16:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:16:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-10-13 12:16:44,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-10-13 12:16:44,029 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 99 transitions. [2024-10-13 12:16:44,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 44 transitions, 146 flow [2024-10-13 12:16:44,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 44 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:16:44,033 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 96 flow [2024-10-13 12:16:44,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-10-13 12:16:44,034 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2024-10-13 12:16:44,035 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 96 flow [2024-10-13 12:16:44,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-13 12:16:44,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:16:44,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:16:44,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:16:44,037 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:16:44,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:16:44,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1262997747, now seen corresponding path program 1 times [2024-10-13 12:16:44,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:16:44,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460088734] [2024-10-13 12:16:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:16:44,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:16:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:16:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:16:44,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:16:44,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460088734] [2024-10-13 12:16:44,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460088734] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:16:44,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:16:44,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:16:44,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042039803] [2024-10-13 12:16:44,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:16:44,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:16:44,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:16:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:16:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:16:44,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 54 [2024-10-13 12:16:44,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-10-13 12:16:44,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:16:44,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 54 [2024-10-13 12:16:44,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:16:45,272 INFO L124 PetriNetUnfolderBase]: 3832/6557 cut-off events. [2024-10-13 12:16:45,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:16:45,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11977 conditions, 6557 events. 3832/6557 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 48666 event pairs, 1168 based on Foata normal form. 0/6316 useless extension candidates. Maximal degree in co-relation 11971. Up to 3323 conditions per place. [2024-10-13 12:16:45,303 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 38 selfloop transitions, 3 changer transitions 52/111 dead transitions. [2024-10-13 12:16:45,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 111 transitions, 424 flow [2024-10-13 12:16:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:16:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:16:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2024-10-13 12:16:45,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-10-13 12:16:45,306 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 96 flow. Second operand 8 states and 279 transitions. [2024-10-13 12:16:45,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 111 transitions, 424 flow [2024-10-13 12:16:45,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 111 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:16:45,308 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 128 flow [2024-10-13 12:16:45,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=128, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2024-10-13 12:16:45,309 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-10-13 12:16:45,309 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 128 flow [2024-10-13 12:16:45,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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) [2024-10-13 12:16:45,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:16:45,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:16:45,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:16:45,310 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:16:45,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:16:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 779691890, now seen corresponding path program 1 times [2024-10-13 12:16:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:16:45,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882193670] [2024-10-13 12:16:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:16:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:16:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:16:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:16:46,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:16:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882193670] [2024-10-13 12:16:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882193670] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:16:46,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:16:46,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:16:46,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022513114] [2024-10-13 12:16:46,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:16:46,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:16:46,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:16:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:16:46,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:16:46,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-10-13 12:16:46,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2024-10-13 12:16:46,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:16:46,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-10-13 12:16:46,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:16:48,188 INFO L124 PetriNetUnfolderBase]: 9763/15303 cut-off events. [2024-10-13 12:16:48,189 INFO L125 PetriNetUnfolderBase]: For 10527/10527 co-relation queries the response was YES. [2024-10-13 12:16:48,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36269 conditions, 15303 events. 9763/15303 cut-off events. For 10527/10527 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 115903 event pairs, 1445 based on Foata normal form. 424/15624 useless extension candidates. Maximal degree in co-relation 36257. Up to 5625 conditions per place. [2024-10-13 12:16:48,363 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 47 selfloop transitions, 11 changer transitions 69/142 dead transitions. [2024-10-13 12:16:48,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 142 transitions, 704 flow [2024-10-13 12:16:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:16:48,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:16:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2024-10-13 12:16:48,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6037037037037037 [2024-10-13 12:16:48,370 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 128 flow. Second operand 10 states and 326 transitions. [2024-10-13 12:16:48,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 142 transitions, 704 flow [2024-10-13 12:16:48,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 142 transitions, 685 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-13 12:16:48,482 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 259 flow [2024-10-13 12:16:48,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=259, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2024-10-13 12:16:48,485 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-10-13 12:16:48,485 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 259 flow [2024-10-13 12:16:48,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2024-10-13 12:16:48,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:16:48,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:16:48,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:16:48,487 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:16:48,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:16:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1146787146, now seen corresponding path program 1 times [2024-10-13 12:16:48,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:16:48,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13994416] [2024-10-13 12:16:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:16:48,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:16:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:16:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:16:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:16:49,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13994416] [2024-10-13 12:16:49,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13994416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:16:49,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:16:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:16:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803724055] [2024-10-13 12:16:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:16:49,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:16:49,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:16:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:16:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:16:49,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-10-13 12:16:49,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-10-13 12:16:49,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:16:49,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-10-13 12:16:49,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:16:51,585 INFO L124 PetriNetUnfolderBase]: 9395/15539 cut-off events. [2024-10-13 12:16:51,586 INFO L125 PetriNetUnfolderBase]: For 41054/41054 co-relation queries the response was YES. [2024-10-13 12:16:51,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52583 conditions, 15539 events. 9395/15539 cut-off events. For 41054/41054 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 124007 event pairs, 985 based on Foata normal form. 298/15797 useless extension candidates. Maximal degree in co-relation 52563. Up to 6703 conditions per place. [2024-10-13 12:16:51,706 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 60 selfloop transitions, 23 changer transitions 70/168 dead transitions. [2024-10-13 12:16:51,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 168 transitions, 1293 flow [2024-10-13 12:16:51,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:16:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:16:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2024-10-13 12:16:51,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6092592592592593 [2024-10-13 12:16:51,709 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 259 flow. Second operand 10 states and 329 transitions. [2024-10-13 12:16:51,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 168 transitions, 1293 flow [2024-10-13 12:16:51,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 168 transitions, 1275 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-13 12:16:51,759 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 548 flow [2024-10-13 12:16:51,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=548, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-10-13 12:16:51,760 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 22 predicate places. [2024-10-13 12:16:51,761 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 548 flow [2024-10-13 12:16:51,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-10-13 12:16:51,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:16:51,762 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:16:51,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:16:51,762 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:16:51,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:16:51,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2005992067, now seen corresponding path program 1 times [2024-10-13 12:16:51,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:16:51,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945009239] [2024-10-13 12:16:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:16:51,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:16:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:16:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:16:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:16:52,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945009239] [2024-10-13 12:16:52,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945009239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:16:52,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:16:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:16:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885402556] [2024-10-13 12:16:52,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:16:52,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:16:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:16:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:16:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:16:52,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 54 [2024-10-13 12:16:52,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 548 flow. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2024-10-13 12:16:52,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:16:52,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 54 [2024-10-13 12:16:52,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:16:54,256 INFO L124 PetriNetUnfolderBase]: 9597/16373 cut-off events. [2024-10-13 12:16:54,256 INFO L125 PetriNetUnfolderBase]: For 67579/68058 co-relation queries the response was YES. [2024-10-13 12:16:54,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62296 conditions, 16373 events. 9597/16373 cut-off events. For 67579/68058 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 141199 event pairs, 3534 based on Foata normal form. 409/16152 useless extension candidates. Maximal degree in co-relation 62268. Up to 5942 conditions per place. [2024-10-13 12:16:54,395 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 56 selfloop transitions, 7 changer transitions 41/135 dead transitions. [2024-10-13 12:16:54,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 135 transitions, 1170 flow [2024-10-13 12:16:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:16:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:16:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-10-13 12:16:54,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-10-13 12:16:54,397 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 548 flow. Second operand 7 states and 234 transitions. [2024-10-13 12:16:54,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 135 transitions, 1170 flow [2024-10-13 12:16:54,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 135 transitions, 1130 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-10-13 12:16:54,651 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 551 flow [2024-10-13 12:16:54,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=551, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-10-13 12:16:54,653 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-10-13 12:16:54,653 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 551 flow [2024-10-13 12:16:54,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2024-10-13 12:16:54,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:16:54,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:16:54,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:16:54,654 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:16:54,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:16:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1626753565, now seen corresponding path program 1 times [2024-10-13 12:16:54,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:16:54,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082587893] [2024-10-13 12:16:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:16:54,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:16:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:16:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:16:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:16:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082587893] [2024-10-13 12:16:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082587893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:16:55,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:16:55,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:16:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792991890] [2024-10-13 12:16:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:16:55,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:16:55,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:16:55,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:16:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:16:55,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-10-13 12:16:55,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 551 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-10-13 12:16:55,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:16:55,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-10-13 12:16:55,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:17:00,536 INFO L124 PetriNetUnfolderBase]: 29954/44270 cut-off events. [2024-10-13 12:17:00,536 INFO L125 PetriNetUnfolderBase]: For 109720/121738 co-relation queries the response was YES. [2024-10-13 12:17:00,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140861 conditions, 44270 events. 29954/44270 cut-off events. For 109720/121738 co-relation queries the response was YES. Maximal size of possible extension queue 2145. Compared 337359 event pairs, 5826 based on Foata normal form. 3184/45549 useless extension candidates. Maximal degree in co-relation 140831. Up to 24456 conditions per place. [2024-10-13 12:17:01,074 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 70 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2024-10-13 12:17:01,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 925 flow [2024-10-13 12:17:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:17:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:17:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-10-13 12:17:01,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-10-13 12:17:01,076 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 551 flow. Second operand 4 states and 141 transitions. [2024-10-13 12:17:01,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 925 flow [2024-10-13 12:17:01,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 894 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-10-13 12:17:01,512 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 574 flow [2024-10-13 12:17:01,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=574, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-10-13 12:17:01,513 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-10-13 12:17:01,513 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 574 flow [2024-10-13 12:17:01,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-10-13 12:17:01,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:17:01,513 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:17:01,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 12:17:01,513 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:17:01,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:17:01,514 INFO L85 PathProgramCache]: Analyzing trace with hash 335113011, now seen corresponding path program 1 times [2024-10-13 12:17:01,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:17:01,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270815215] [2024-10-13 12:17:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:17:01,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:17:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:17:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:17:01,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:17:01,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270815215] [2024-10-13 12:17:01,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270815215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:17:01,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:17:01,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:17:01,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873093244] [2024-10-13 12:17:01,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:17:01,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:17:01,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:17:01,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:17:01,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:17:01,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 54 [2024-10-13 12:17:01,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2024-10-13 12:17:01,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:17:01,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 54 [2024-10-13 12:17:01,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:17:06,777 INFO L124 PetriNetUnfolderBase]: 26170/43528 cut-off events. [2024-10-13 12:17:06,778 INFO L125 PetriNetUnfolderBase]: For 116668/120865 co-relation queries the response was YES. [2024-10-13 12:17:07,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147292 conditions, 43528 events. 26170/43528 cut-off events. For 116668/120865 co-relation queries the response was YES. Maximal size of possible extension queue 2343. Compared 399802 event pairs, 11124 based on Foata normal form. 1836/41236 useless extension candidates. Maximal degree in co-relation 147265. Up to 16229 conditions per place. [2024-10-13 12:17:07,237 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 85 selfloop transitions, 17 changer transitions 4/138 dead transitions. [2024-10-13 12:17:07,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 138 transitions, 1168 flow [2024-10-13 12:17:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:17:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:17:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-10-13 12:17:07,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6243386243386243 [2024-10-13 12:17:07,239 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 574 flow. Second operand 7 states and 236 transitions. [2024-10-13 12:17:07,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 138 transitions, 1168 flow [2024-10-13 12:17:07,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 138 transitions, 1154 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 12:17:07,264 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 686 flow [2024-10-13 12:17:07,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=686, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2024-10-13 12:17:07,266 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2024-10-13 12:17:07,266 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 686 flow [2024-10-13 12:17:07,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2024-10-13 12:17:07,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:17:07,266 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:17:07,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 12:17:07,269 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:17:07,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:17:07,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1803320923, now seen corresponding path program 1 times [2024-10-13 12:17:07,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:17:07,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13132167] [2024-10-13 12:17:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:17:07,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:17:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:17:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:17:07,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:17:07,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13132167] [2024-10-13 12:17:07,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13132167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:17:07,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:17:07,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:17:07,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559286303] [2024-10-13 12:17:07,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:17:07,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:17:07,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:17:07,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:17:07,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:17:07,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-10-13 12:17:07,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 81 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-10-13 12:17:07,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:17:07,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-10-13 12:17:07,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:17:13,749 INFO L124 PetriNetUnfolderBase]: 37111/54833 cut-off events. [2024-10-13 12:17:13,749 INFO L125 PetriNetUnfolderBase]: For 133047/149271 co-relation queries the response was YES. [2024-10-13 12:17:14,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184777 conditions, 54833 events. 37111/54833 cut-off events. For 133047/149271 co-relation queries the response was YES. Maximal size of possible extension queue 2705. Compared 425657 event pairs, 4429 based on Foata normal form. 4299/57098 useless extension candidates. Maximal degree in co-relation 184745. Up to 23429 conditions per place. [2024-10-13 12:17:14,293 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 88 selfloop transitions, 10 changer transitions 5/138 dead transitions. [2024-10-13 12:17:14,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 138 transitions, 1210 flow [2024-10-13 12:17:14,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:17:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:17:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2024-10-13 12:17:14,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 12:17:14,295 INFO L175 Difference]: Start difference. First operand has 88 places, 81 transitions, 686 flow. Second operand 5 states and 180 transitions. [2024-10-13 12:17:14,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 138 transitions, 1210 flow [2024-10-13 12:17:14,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 138 transitions, 1172 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-10-13 12:17:14,540 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 657 flow [2024-10-13 12:17:14,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=657, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-10-13 12:17:14,540 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2024-10-13 12:17:14,541 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 657 flow [2024-10-13 12:17:14,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-10-13 12:17:14,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:17:14,541 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:17:14,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 12:17:14,541 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:17:14,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:17:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1546864659, now seen corresponding path program 1 times [2024-10-13 12:17:14,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:17:14,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927855621] [2024-10-13 12:17:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:17:14,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:17:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:17:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:17:14,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:17:14,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927855621] [2024-10-13 12:17:14,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927855621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:17:14,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:17:14,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:17:14,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368257937] [2024-10-13 12:17:14,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:17:14,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:17:14,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:17:15,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:17:15,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:17:15,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-10-13 12:17:15,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 657 flow. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 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) [2024-10-13 12:17:15,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:17:15,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-10-13 12:17:15,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:17:19,681 INFO L124 PetriNetUnfolderBase]: 28075/41441 cut-off events. [2024-10-13 12:17:19,685 INFO L125 PetriNetUnfolderBase]: For 119426/138009 co-relation queries the response was YES. [2024-10-13 12:17:20,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152827 conditions, 41441 events. 28075/41441 cut-off events. For 119426/138009 co-relation queries the response was YES. Maximal size of possible extension queue 2221. Compared 313502 event pairs, 1862 based on Foata normal form. 3389/43111 useless extension candidates. Maximal degree in co-relation 152792. Up to 13692 conditions per place. [2024-10-13 12:17:20,123 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 97 selfloop transitions, 14 changer transitions 5/151 dead transitions. [2024-10-13 12:17:20,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 151 transitions, 1290 flow [2024-10-13 12:17:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:17:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:17:20,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-10-13 12:17:20,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-10-13 12:17:20,125 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 657 flow. Second operand 6 states and 217 transitions. [2024-10-13 12:17:20,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 151 transitions, 1290 flow [2024-10-13 12:17:20,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 151 transitions, 1247 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-10-13 12:17:20,170 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 684 flow [2024-10-13 12:17:20,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2024-10-13 12:17:20,171 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 28 predicate places. [2024-10-13 12:17:20,171 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 684 flow [2024-10-13 12:17:20,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 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) [2024-10-13 12:17:20,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:17:20,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:17:20,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 12:17:20,172 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:17:20,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:17:20,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1822220119, now seen corresponding path program 1 times [2024-10-13 12:17:20,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:17:20,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943902917] [2024-10-13 12:17:20,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:17:20,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:17:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:17:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:17:20,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:17:20,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943902917] [2024-10-13 12:17:20,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943902917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:17:20,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:17:20,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:17:20,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893088570] [2024-10-13 12:17:20,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:17:20,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:17:20,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:17:20,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:17:20,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:17:20,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-10-13 12:17:20,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 684 flow. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 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) [2024-10-13 12:17:20,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:17:20,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-10-13 12:17:20,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:17:24,572 INFO L124 PetriNetUnfolderBase]: 25067/36977 cut-off events. [2024-10-13 12:17:24,572 INFO L125 PetriNetUnfolderBase]: For 147479/166672 co-relation queries the response was YES. [2024-10-13 12:17:24,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147259 conditions, 36977 events. 25067/36977 cut-off events. For 147479/166672 co-relation queries the response was YES. Maximal size of possible extension queue 2209. Compared 280448 event pairs, 1710 based on Foata normal form. 2557/37847 useless extension candidates. Maximal degree in co-relation 147227. Up to 13692 conditions per place. [2024-10-13 12:17:24,889 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 80 selfloop transitions, 18 changer transitions 11/144 dead transitions. [2024-10-13 12:17:24,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 144 transitions, 1211 flow [2024-10-13 12:17:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:17:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:17:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-10-13 12:17:24,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6243386243386243 [2024-10-13 12:17:24,891 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 684 flow. Second operand 7 states and 236 transitions. [2024-10-13 12:17:24,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 144 transitions, 1211 flow [2024-10-13 12:17:25,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 144 transitions, 1104 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-10-13 12:17:25,516 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 627 flow [2024-10-13 12:17:25,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=627, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-10-13 12:17:25,517 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 28 predicate places. [2024-10-13 12:17:25,517 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 627 flow [2024-10-13 12:17:25,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 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) [2024-10-13 12:17:25,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:17:25,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:17:25,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 12:17:25,518 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-10-13 12:17:25,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:17:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1514265962, now seen corresponding path program 1 times [2024-10-13 12:17:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:17:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550879432] [2024-10-13 12:17:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:17:25,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:17:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:17:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:17:26,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:17:26,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550879432] [2024-10-13 12:17:26,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550879432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:17:26,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:17:26,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 12:17:26,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458401764] [2024-10-13 12:17:26,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:17:26,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:17:26,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:17:26,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:17:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:17:26,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2024-10-13 12:17:26,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 627 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 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) [2024-10-13 12:17:26,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:17:26,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2024-10-13 12:17:26,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand