./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:30:01,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:30:01,570 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:30:01,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:30:01,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:30:01,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:30:01,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:30:01,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:30:01,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:30:01,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:30:01,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:30:01,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:30:01,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:30:01,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:30:01,617 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:30:01,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:30:01,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:30:01,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:30:01,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:30:01,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:30:01,622 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:30:01,623 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:30:01,623 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:30:01,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:30:01,624 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:30:01,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:30:01,624 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:30:01,625 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:30:01,625 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:30:01,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:30:01,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:30:01,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:30:01,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:30:01,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:30:01,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:30:01,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:30:01,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:30:01,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:30:01,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:30:01,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:30:01,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:30:01,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:30:01,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-11-12 16:30:01,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:30:01,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:30:01,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:30:01,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:30:01,919 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:30:01,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-12 16:30:03,381 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:30:03,551 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:30:03,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-12 16:30:03,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18deb00f/36654d7a13e143e78ea9a149a5cd4d58/FLAGe59549593 [2024-11-12 16:30:03,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18deb00f/36654d7a13e143e78ea9a149a5cd4d58 [2024-11-12 16:30:03,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:30:03,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:30:03,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:30:03,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:30:03,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:30:03,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:30:03" (1/1) ... [2024-11-12 16:30:03,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fe6d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:03, skipping insertion in model container [2024-11-12 16:30:03,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:30:03" (1/1) ... [2024-11-12 16:30:03,976 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:30:04,183 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-12 16:30:04,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:30:04,196 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:30:04,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:30:04,241 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:30:04,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04 WrapperNode [2024-11-12 16:30:04,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:30:04,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:30:04,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:30:04,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:30:04,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,280 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 161 [2024-11-12 16:30:04,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:30:04,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:30:04,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:30:04,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:30:04,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,310 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-12 16:30:04,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:30:04,332 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:30:04,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:30:04,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:30:04,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (1/1) ... [2024-11-12 16:30:04,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:30:04,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:30:04,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 16:30:04,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 16:30:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:30:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 16:30:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 16:30:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 16:30:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 16:30:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:30:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 16:30:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 16:30:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 16:30:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 16:30:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 16:30:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 16:30:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:30:04,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:30:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 16:30:04,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 16:30:04,416 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:30:04,506 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:30:04,508 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:30:04,844 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:30:04,845 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:30:05,176 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:30:05,176 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 16:30:05,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:30:05 BoogieIcfgContainer [2024-11-12 16:30:05,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:30:05,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:30:05,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:30:05,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:30:05,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:30:03" (1/3) ... [2024-11-12 16:30:05,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71adc73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:30:05, skipping insertion in model container [2024-11-12 16:30:05,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:30:04" (2/3) ... [2024-11-12 16:30:05,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71adc73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:30:05, skipping insertion in model container [2024-11-12 16:30:05,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:30:05" (3/3) ... [2024-11-12 16:30:05,189 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-11-12 16:30:05,206 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:30:05,207 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-12 16:30:05,207 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:30:05,270 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 16:30:05,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-11-12 16:30:05,347 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-12 16:30:05,347 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:30:05,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 76 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-12 16:30:05,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-11-12 16:30:05,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-11-12 16:30:05,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:30:05,381 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;@518e466d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:30:05,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-12 16:30:05,385 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:30:05,386 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-12 16:30:05,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 16:30:05,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:05,387 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:30:05,390 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:05,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash 515660, now seen corresponding path program 1 times [2024-11-12 16:30:05,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:05,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028181517] [2024-11-12 16:30:05,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:05,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:30:05,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:05,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028181517] [2024-11-12 16:30:05,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028181517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:05,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:05,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 16:30:05,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845990613] [2024-11-12 16:30:05,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:05,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:30:05,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:30:05,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:30:05,730 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:05,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:05,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:05,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:05,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:05,952 INFO L124 PetriNetUnfolderBase]: 238/440 cut-off events. [2024-11-12 16:30:05,952 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-12 16:30:05,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 440 events. 238/440 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2029 event pairs, 201 based on Foata normal form. 22/325 useless extension candidates. Maximal degree in co-relation 808. Up to 388 conditions per place. [2024-11-12 16:30:05,962 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 25 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-12 16:30:05,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 132 flow [2024-11-12 16:30:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:30:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:30:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-12 16:30:05,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-12 16:30:05,977 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 57 transitions. [2024-11-12 16:30:05,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 132 flow [2024-11-12 16:30:05,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 16:30:05,983 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2024-11-12 16:30:05,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-11-12 16:30:05,991 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-12 16:30:05,991 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2024-11-12 16:30:05,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:05,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:05,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 16:30:05,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:30:05,992 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:05,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash 515661, now seen corresponding path program 1 times [2024-11-12 16:30:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:05,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933848052] [2024-11-12 16:30:05,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:30:06,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:06,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933848052] [2024-11-12 16:30:06,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933848052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:06,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:06,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:30:06,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296221166] [2024-11-12 16:30:06,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:06,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:30:06,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:06,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:30:06,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:30:06,347 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:06,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:06,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:06,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:06,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:06,534 INFO L124 PetriNetUnfolderBase]: 239/443 cut-off events. [2024-11-12 16:30:06,534 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:30:06,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 443 events. 239/443 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2027 event pairs, 201 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 832. Up to 393 conditions per place. [2024-11-12 16:30:06,539 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 27 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-11-12 16:30:06,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 144 flow [2024-11-12 16:30:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:30:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:30:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-12 16:30:06,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-12 16:30:06,541 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 4 states and 68 transitions. [2024-11-12 16:30:06,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 144 flow [2024-11-12 16:30:06,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:30:06,543 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 97 flow [2024-11-12 16:30:06,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-11-12 16:30:06,544 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-12 16:30:06,545 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 97 flow [2024-11-12 16:30:06,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:06,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:06,546 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-12 16:30:06,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:30:06,546 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:06,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash 495566162, now seen corresponding path program 1 times [2024-11-12 16:30:06,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:06,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062634916] [2024-11-12 16:30:06,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:06,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:30:06,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:06,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062634916] [2024-11-12 16:30:06,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062634916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:30:06,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913407624] [2024-11-12 16:30:06,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:06,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:06,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:30:06,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:30:06,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:30:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:06,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 16:30:06,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:30:06,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-12 16:30:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:30:07,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:30:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:30:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913407624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:30:07,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:30:07,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-12 16:30:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900813747] [2024-11-12 16:30:07,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:30:07,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:30:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:30:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:30:07,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:07,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 97 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:07,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:07,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:07,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:07,628 INFO L124 PetriNetUnfolderBase]: 240/445 cut-off events. [2024-11-12 16:30:07,628 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:30:07,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 445 events. 240/445 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2047 event pairs, 201 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 839. Up to 390 conditions per place. [2024-11-12 16:30:07,635 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2024-11-12 16:30:07,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 171 flow [2024-11-12 16:30:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 16:30:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 16:30:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-11-12 16:30:07,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-11-12 16:30:07,641 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 97 flow. Second operand 8 states and 107 transitions. [2024-11-12 16:30:07,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 171 flow [2024-11-12 16:30:07,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:30:07,643 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 122 flow [2024-11-12 16:30:07,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-12 16:30:07,645 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-11-12 16:30:07,645 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 122 flow [2024-11-12 16:30:07,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:07,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:07,646 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 16:30:07,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 16:30:07,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:07,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:07,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1815149000, now seen corresponding path program 1 times [2024-11-12 16:30:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:07,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141417268] [2024-11-12 16:30:07,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:30:07,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:07,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141417268] [2024-11-12 16:30:07,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141417268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:07,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:07,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:30:07,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243258569] [2024-11-12 16:30:07,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:07,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:30:07,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:07,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:30:07,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:30:07,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:07,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:07,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:07,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:07,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:08,018 INFO L124 PetriNetUnfolderBase]: 169/320 cut-off events. [2024-11-12 16:30:08,019 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:30:08,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 320 events. 169/320 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1276 event pairs, 136 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 597. Up to 273 conditions per place. [2024-11-12 16:30:08,021 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 26 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-11-12 16:30:08,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 176 flow [2024-11-12 16:30:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:30:08,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:30:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-12 16:30:08,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-11-12 16:30:08,023 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 122 flow. Second operand 4 states and 63 transitions. [2024-11-12 16:30:08,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 176 flow [2024-11-12 16:30:08,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 134 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-12 16:30:08,025 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 82 flow [2024-11-12 16:30:08,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-11-12 16:30:08,026 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-12 16:30:08,026 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 82 flow [2024-11-12 16:30:08,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:08,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:08,026 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 16:30:08,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:30:08,027 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:08,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1815148999, now seen corresponding path program 1 times [2024-11-12 16:30:08,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:08,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012307248] [2024-11-12 16:30:08,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:08,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:30:08,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012307248] [2024-11-12 16:30:08,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012307248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:08,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:08,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:30:08,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729787577] [2024-11-12 16:30:08,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:08,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:30:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:08,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:30:08,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:30:08,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-12 16:30:08,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:08,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:08,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-12 16:30:08,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:08,219 INFO L124 PetriNetUnfolderBase]: 181/356 cut-off events. [2024-11-12 16:30:08,220 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:30:08,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 356 events. 181/356 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1445 event pairs, 149 based on Foata normal form. 14/309 useless extension candidates. Maximal degree in co-relation 589. Up to 278 conditions per place. [2024-11-12 16:30:08,222 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 27 selfloop transitions, 2 changer transitions 8/42 dead transitions. [2024-11-12 16:30:08,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 172 flow [2024-11-12 16:30:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:30:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:30:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-11-12 16:30:08,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 16:30:08,228 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 4 states and 80 transitions. [2024-11-12 16:30:08,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 172 flow [2024-11-12 16:30:08,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:30:08,229 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 90 flow [2024-11-12 16:30:08,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-12 16:30:08,232 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-12 16:30:08,232 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 90 flow [2024-11-12 16:30:08,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:08,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:08,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:08,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 16:30:08,235 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:08,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:08,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1611599124, now seen corresponding path program 1 times [2024-11-12 16:30:08,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:08,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307454272] [2024-11-12 16:30:08,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:08,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:30:08,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307454272] [2024-11-12 16:30:08,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307454272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:30:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605376700] [2024-11-12 16:30:08,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:08,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:08,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:30:08,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:30:08,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:30:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:08,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 16:30:08,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:30:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:30:08,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 16:30:08,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605376700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:08,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 16:30:08,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-12 16:30:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591942872] [2024-11-12 16:30:08,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:08,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:30:08,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:08,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:30:08,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-12 16:30:08,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-12 16:30:08,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:08,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:08,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-12 16:30:08,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:08,682 INFO L124 PetriNetUnfolderBase]: 109/214 cut-off events. [2024-11-12 16:30:08,682 INFO L125 PetriNetUnfolderBase]: For 33/36 co-relation queries the response was YES. [2024-11-12 16:30:08,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 214 events. 109/214 cut-off events. For 33/36 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 685 event pairs, 83 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 437. Up to 176 conditions per place. [2024-11-12 16:30:08,683 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-12 16:30:08,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 130 flow [2024-11-12 16:30:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:30:08,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:30:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-12 16:30:08,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-12 16:30:08,685 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 90 flow. Second operand 4 states and 64 transitions. [2024-11-12 16:30:08,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 130 flow [2024-11-12 16:30:08,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:30:08,687 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 80 flow [2024-11-12 16:30:08,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-11-12 16:30:08,688 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-11-12 16:30:08,688 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 80 flow [2024-11-12 16:30:08,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:08,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:08,688 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:08,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 16:30:08,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-12 16:30:08,893 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:08,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:08,893 INFO L85 PathProgramCache]: Analyzing trace with hash -719122717, now seen corresponding path program 1 times [2024-11-12 16:30:08,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:08,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030988544] [2024-11-12 16:30:08,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:08,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:08,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:08,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030988544] [2024-11-12 16:30:08,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030988544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:08,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:08,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:30:08,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666120707] [2024-11-12 16:30:08,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:08,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:30:08,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:30:08,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:30:08,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-12 16:30:08,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:08,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:08,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-12 16:30:08,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:09,014 INFO L124 PetriNetUnfolderBase]: 117/232 cut-off events. [2024-11-12 16:30:09,014 INFO L125 PetriNetUnfolderBase]: For 40/43 co-relation queries the response was YES. [2024-11-12 16:30:09,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 232 events. 117/232 cut-off events. For 40/43 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 714 event pairs, 34 based on Foata normal form. 3/223 useless extension candidates. Maximal degree in co-relation 468. Up to 159 conditions per place. [2024-11-12 16:30:09,016 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 30 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-12 16:30:09,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 165 flow [2024-11-12 16:30:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:30:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:30:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-12 16:30:09,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-12 16:30:09,018 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 80 flow. Second operand 3 states and 59 transitions. [2024-11-12 16:30:09,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 165 flow [2024-11-12 16:30:09,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:30:09,019 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 99 flow [2024-11-12 16:30:09,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2024-11-12 16:30:09,020 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-12 16:30:09,020 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 99 flow [2024-11-12 16:30:09,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:09,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:09,021 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:09,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 16:30:09,021 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:09,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:09,022 INFO L85 PathProgramCache]: Analyzing trace with hash 220299981, now seen corresponding path program 2 times [2024-11-12 16:30:09,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:09,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659395659] [2024-11-12 16:30:09,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:09,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:09,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659395659] [2024-11-12 16:30:09,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659395659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:09,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:09,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:09,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99588016] [2024-11-12 16:30:09,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:09,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:09,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:09,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:09,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:09,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:09,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 99 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:09,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:09,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:09,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:09,767 INFO L124 PetriNetUnfolderBase]: 172/339 cut-off events. [2024-11-12 16:30:09,767 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-12 16:30:09,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 339 events. 172/339 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1271 event pairs, 10 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 778. Up to 199 conditions per place. [2024-11-12 16:30:09,770 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 46 selfloop transitions, 14 changer transitions 5/69 dead transitions. [2024-11-12 16:30:09,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 333 flow [2024-11-12 16:30:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:30:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:30:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-11-12 16:30:09,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3775 [2024-11-12 16:30:09,772 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 99 flow. Second operand 10 states and 151 transitions. [2024-11-12 16:30:09,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 333 flow [2024-11-12 16:30:09,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 307 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-12 16:30:09,774 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 162 flow [2024-11-12 16:30:09,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-12 16:30:09,775 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-12 16:30:09,775 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 162 flow [2024-11-12 16:30:09,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:09,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:09,776 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:09,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:30:09,776 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:09,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:09,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1499283237, now seen corresponding path program 3 times [2024-11-12 16:30:09,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:09,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008405845] [2024-11-12 16:30:09,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:09,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:10,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008405845] [2024-11-12 16:30:10,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008405845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:10,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:10,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242417210] [2024-11-12 16:30:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:10,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:10,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:10,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:10,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 162 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:10,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:10,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:10,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:10,413 INFO L124 PetriNetUnfolderBase]: 194/393 cut-off events. [2024-11-12 16:30:10,414 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-11-12 16:30:10,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 393 events. 194/393 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1618 event pairs, 24 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 1059. Up to 226 conditions per place. [2024-11-12 16:30:10,417 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 48 selfloop transitions, 21 changer transitions 5/78 dead transitions. [2024-11-12 16:30:10,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 448 flow [2024-11-12 16:30:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:30:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:30:10,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-11-12 16:30:10,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-11-12 16:30:10,418 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 162 flow. Second operand 10 states and 154 transitions. [2024-11-12 16:30:10,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 448 flow [2024-11-12 16:30:10,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 437 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-12 16:30:10,422 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 285 flow [2024-11-12 16:30:10,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=285, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-11-12 16:30:10,422 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-11-12 16:30:10,423 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 285 flow [2024-11-12 16:30:10,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:10,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:10,423 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:10,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 16:30:10,424 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:10,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:10,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1747105657, now seen corresponding path program 4 times [2024-11-12 16:30:10,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:10,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489412997] [2024-11-12 16:30:10,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:10,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:10,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:10,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489412997] [2024-11-12 16:30:10,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489412997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:10,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:10,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:10,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648948283] [2024-11-12 16:30:10,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:10,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:10,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:10,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:10,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 285 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:10,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:10,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:10,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:11,134 INFO L124 PetriNetUnfolderBase]: 206/433 cut-off events. [2024-11-12 16:30:11,134 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2024-11-12 16:30:11,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 433 events. 206/433 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1946 event pairs, 9 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1357. Up to 213 conditions per place. [2024-11-12 16:30:11,138 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 52 selfloop transitions, 27 changer transitions 5/88 dead transitions. [2024-11-12 16:30:11,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 590 flow [2024-11-12 16:30:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 16:30:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 16:30:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-11-12 16:30:11,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-11-12 16:30:11,140 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 285 flow. Second operand 11 states and 167 transitions. [2024-11-12 16:30:11,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 590 flow [2024-11-12 16:30:11,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 566 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-12 16:30:11,144 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 361 flow [2024-11-12 16:30:11,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=361, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-11-12 16:30:11,145 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2024-11-12 16:30:11,145 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 361 flow [2024-11-12 16:30:11,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:11,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:11,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:11,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 16:30:11,146 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:11,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1155481859, now seen corresponding path program 5 times [2024-11-12 16:30:11,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:11,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882718596] [2024-11-12 16:30:11,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:11,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:11,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:11,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882718596] [2024-11-12 16:30:11,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882718596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:11,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:11,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644203652] [2024-11-12 16:30:11,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:11,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:11,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:11,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:11,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:11,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 361 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:11,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:11,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:11,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:11,745 INFO L124 PetriNetUnfolderBase]: 205/440 cut-off events. [2024-11-12 16:30:11,745 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-11-12 16:30:11,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 440 events. 205/440 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2013 event pairs, 32 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1498. Up to 263 conditions per place. [2024-11-12 16:30:11,749 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 53 selfloop transitions, 23 changer transitions 5/85 dead transitions. [2024-11-12 16:30:11,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 655 flow [2024-11-12 16:30:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:30:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:30:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-12 16:30:11,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-11-12 16:30:11,751 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 361 flow. Second operand 10 states and 153 transitions. [2024-11-12 16:30:11,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 655 flow [2024-11-12 16:30:11,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 592 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-11-12 16:30:11,758 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 402 flow [2024-11-12 16:30:11,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=402, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-11-12 16:30:11,759 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 32 predicate places. [2024-11-12 16:30:11,759 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 402 flow [2024-11-12 16:30:11,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:11,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:11,760 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:11,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 16:30:11,760 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:11,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash 528006183, now seen corresponding path program 6 times [2024-11-12 16:30:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:11,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918967227] [2024-11-12 16:30:11,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:11,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:12,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:12,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918967227] [2024-11-12 16:30:12,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918967227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:12,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:12,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31620014] [2024-11-12 16:30:12,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:12,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:12,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:12,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:12,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 402 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:12,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:12,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:12,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:12,380 INFO L124 PetriNetUnfolderBase]: 217/474 cut-off events. [2024-11-12 16:30:12,380 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2024-11-12 16:30:12,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 474 events. 217/474 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2265 event pairs, 21 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 1627. Up to 282 conditions per place. [2024-11-12 16:30:12,384 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 58 selfloop transitions, 24 changer transitions 5/91 dead transitions. [2024-11-12 16:30:12,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 91 transitions, 701 flow [2024-11-12 16:30:12,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:30:12,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:30:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-11-12 16:30:12,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-11-12 16:30:12,386 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 402 flow. Second operand 10 states and 155 transitions. [2024-11-12 16:30:12,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 91 transitions, 701 flow [2024-11-12 16:30:12,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 657 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-12 16:30:12,391 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 447 flow [2024-11-12 16:30:12,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=447, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-11-12 16:30:12,392 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2024-11-12 16:30:12,392 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 447 flow [2024-11-12 16:30:12,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:12,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:12,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:12,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 16:30:12,393 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:12,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:12,393 INFO L85 PathProgramCache]: Analyzing trace with hash -829425351, now seen corresponding path program 7 times [2024-11-12 16:30:12,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:12,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662535757] [2024-11-12 16:30:12,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:12,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:12,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:12,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662535757] [2024-11-12 16:30:12,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662535757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:12,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:12,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71889076] [2024-11-12 16:30:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:12,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:12,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:12,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:12,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:12,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 447 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:12,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:12,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:12,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:12,919 INFO L124 PetriNetUnfolderBase]: 213/461 cut-off events. [2024-11-12 16:30:12,919 INFO L125 PetriNetUnfolderBase]: For 1505/1513 co-relation queries the response was YES. [2024-11-12 16:30:12,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 461 events. 213/461 cut-off events. For 1505/1513 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2167 event pairs, 22 based on Foata normal form. 9/470 useless extension candidates. Maximal degree in co-relation 1705. Up to 286 conditions per place. [2024-11-12 16:30:12,923 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 52 selfloop transitions, 23 changer transitions 8/87 dead transitions. [2024-11-12 16:30:12,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 716 flow [2024-11-12 16:30:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:30:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:30:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-11-12 16:30:12,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-12 16:30:12,924 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 447 flow. Second operand 10 states and 150 transitions. [2024-11-12 16:30:12,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 716 flow [2024-11-12 16:30:12,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 657 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-12 16:30:12,930 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 443 flow [2024-11-12 16:30:12,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=443, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-11-12 16:30:12,930 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-11-12 16:30:12,930 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 443 flow [2024-11-12 16:30:12,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:12,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:12,931 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:12,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 16:30:12,931 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:12,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:12,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1985813381, now seen corresponding path program 8 times [2024-11-12 16:30:12,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:12,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402505198] [2024-11-12 16:30:12,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:13,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:13,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402505198] [2024-11-12 16:30:13,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402505198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:13,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:13,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:13,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026958843] [2024-11-12 16:30:13,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:13,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:13,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:13,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:13,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:13,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:13,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 443 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:13,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:13,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:13,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:13,524 INFO L124 PetriNetUnfolderBase]: 222/486 cut-off events. [2024-11-12 16:30:13,524 INFO L125 PetriNetUnfolderBase]: For 1660/1672 co-relation queries the response was YES. [2024-11-12 16:30:13,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 486 events. 222/486 cut-off events. For 1660/1672 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2317 event pairs, 42 based on Foata normal form. 3/489 useless extension candidates. Maximal degree in co-relation 1796. Up to 292 conditions per place. [2024-11-12 16:30:13,529 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 61 selfloop transitions, 24 changer transitions 5/94 dead transitions. [2024-11-12 16:30:13,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 791 flow [2024-11-12 16:30:13,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:30:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:30:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-11-12 16:30:13,531 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3925 [2024-11-12 16:30:13,531 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 443 flow. Second operand 10 states and 157 transitions. [2024-11-12 16:30:13,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 791 flow [2024-11-12 16:30:13,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 735 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-12 16:30:13,537 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 486 flow [2024-11-12 16:30:13,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=486, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2024-11-12 16:30:13,537 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2024-11-12 16:30:13,538 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 486 flow [2024-11-12 16:30:13,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:13,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:13,538 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:13,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 16:30:13,538 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:13,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1146305349, now seen corresponding path program 9 times [2024-11-12 16:30:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945882940] [2024-11-12 16:30:13,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:13,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:13,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945882940] [2024-11-12 16:30:13,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945882940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:13,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:13,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:13,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782891090] [2024-11-12 16:30:13,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:13,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:13,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:13,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:13,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:13,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:13,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 486 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:13,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:13,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:13,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:14,101 INFO L124 PetriNetUnfolderBase]: 218/475 cut-off events. [2024-11-12 16:30:14,102 INFO L125 PetriNetUnfolderBase]: For 2271/2291 co-relation queries the response was YES. [2024-11-12 16:30:14,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 475 events. 218/475 cut-off events. For 2271/2291 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2273 event pairs, 33 based on Foata normal form. 11/486 useless extension candidates. Maximal degree in co-relation 1866. Up to 296 conditions per place. [2024-11-12 16:30:14,106 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 55 selfloop transitions, 23 changer transitions 8/90 dead transitions. [2024-11-12 16:30:14,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 796 flow [2024-11-12 16:30:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:30:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:30:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-11-12 16:30:14,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-11-12 16:30:14,109 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 486 flow. Second operand 10 states and 152 transitions. [2024-11-12 16:30:14,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 796 flow [2024-11-12 16:30:14,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 727 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-12 16:30:14,117 INFO L231 Difference]: Finished difference. Result has 86 places, 67 transitions, 474 flow [2024-11-12 16:30:14,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=474, PETRI_PLACES=86, PETRI_TRANSITIONS=67} [2024-11-12 16:30:14,119 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2024-11-12 16:30:14,119 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 67 transitions, 474 flow [2024-11-12 16:30:14,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:14,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:14,119 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:14,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 16:30:14,120 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:14,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1965352537, now seen corresponding path program 10 times [2024-11-12 16:30:14,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:14,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664535042] [2024-11-12 16:30:14,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:14,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664535042] [2024-11-12 16:30:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664535042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:14,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:14,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:14,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008510117] [2024-11-12 16:30:14,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:14,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:14,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:14,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:14,511 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:14,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 67 transitions, 474 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:14,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:14,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:14,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:14,784 INFO L124 PetriNetUnfolderBase]: 230/504 cut-off events. [2024-11-12 16:30:14,784 INFO L125 PetriNetUnfolderBase]: For 2507/2531 co-relation queries the response was YES. [2024-11-12 16:30:14,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 504 events. 230/504 cut-off events. For 2507/2531 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2416 event pairs, 39 based on Foata normal form. 5/508 useless extension candidates. Maximal degree in co-relation 1969. Up to 302 conditions per place. [2024-11-12 16:30:14,788 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 64 selfloop transitions, 23 changer transitions 5/96 dead transitions. [2024-11-12 16:30:14,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 96 transitions, 845 flow [2024-11-12 16:30:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:30:14,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:30:14,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-11-12 16:30:14,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-11-12 16:30:14,790 INFO L175 Difference]: Start difference. First operand has 86 places, 67 transitions, 474 flow. Second operand 10 states and 158 transitions. [2024-11-12 16:30:14,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 96 transitions, 845 flow [2024-11-12 16:30:14,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 787 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-12 16:30:14,797 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 523 flow [2024-11-12 16:30:14,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=523, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2024-11-12 16:30:14,797 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-11-12 16:30:14,798 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 523 flow [2024-11-12 16:30:14,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:14,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:14,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:14,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 16:30:14,798 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:14,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1187406449, now seen corresponding path program 11 times [2024-11-12 16:30:14,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:14,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517054658] [2024-11-12 16:30:14,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:14,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:15,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:15,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517054658] [2024-11-12 16:30:15,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517054658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:15,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:15,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 16:30:15,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169977162] [2024-11-12 16:30:15,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:15,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:30:15,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:15,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:30:15,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:30:15,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:15,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 523 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:15,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:15,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:15,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:15,286 INFO L124 PetriNetUnfolderBase]: 226/491 cut-off events. [2024-11-12 16:30:15,286 INFO L125 PetriNetUnfolderBase]: For 3345/3383 co-relation queries the response was YES. [2024-11-12 16:30:15,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 491 events. 226/491 cut-off events. For 3345/3383 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2332 event pairs, 39 based on Foata normal form. 13/503 useless extension candidates. Maximal degree in co-relation 2025. Up to 306 conditions per place. [2024-11-12 16:30:15,290 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 58 selfloop transitions, 22 changer transitions 8/92 dead transitions. [2024-11-12 16:30:15,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 840 flow [2024-11-12 16:30:15,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:30:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:30:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-11-12 16:30:15,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3825 [2024-11-12 16:30:15,293 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 523 flow. Second operand 10 states and 153 transitions. [2024-11-12 16:30:15,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 840 flow [2024-11-12 16:30:15,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 763 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-11-12 16:30:15,303 INFO L231 Difference]: Finished difference. Result has 91 places, 70 transitions, 503 flow [2024-11-12 16:30:15,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=503, PETRI_PLACES=91, PETRI_TRANSITIONS=70} [2024-11-12 16:30:15,304 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 51 predicate places. [2024-11-12 16:30:15,304 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 70 transitions, 503 flow [2024-11-12 16:30:15,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:15,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:15,304 INFO L206 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] [2024-11-12 16:30:15,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 16:30:15,305 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:15,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:15,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1831596706, now seen corresponding path program 1 times [2024-11-12 16:30:15,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:15,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135025330] [2024-11-12 16:30:15,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:15,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:30:15,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:15,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135025330] [2024-11-12 16:30:15,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135025330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:30:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137106136] [2024-11-12 16:30:15,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:15,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:15,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:30:15,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:30:15,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 16:30:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:15,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 16:30:15,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:30:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:30:15,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:30:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:30:15,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137106136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:30:15,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:30:15,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-12 16:30:15,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968665738] [2024-11-12 16:30:15,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:30:15,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 16:30:15,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:15,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 16:30:15,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-12 16:30:15,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-12 16:30:15,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 70 transitions, 503 flow. Second operand has 14 states, 14 states have (on average 13.428571428571429) internal successors, (188), 14 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:15,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:15,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-12 16:30:15,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:15,998 INFO L124 PetriNetUnfolderBase]: 359/859 cut-off events. [2024-11-12 16:30:15,998 INFO L125 PetriNetUnfolderBase]: For 6495/6545 co-relation queries the response was YES. [2024-11-12 16:30:16,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 859 events. 359/859 cut-off events. For 6495/6545 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5101 event pairs, 148 based on Foata normal form. 38/896 useless extension candidates. Maximal degree in co-relation 3581. Up to 369 conditions per place. [2024-11-12 16:30:16,006 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 112 selfloop transitions, 8 changer transitions 13/138 dead transitions. [2024-11-12 16:30:16,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 138 transitions, 1314 flow [2024-11-12 16:30:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 16:30:16,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 16:30:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-11-12 16:30:16,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-12 16:30:16,008 INFO L175 Difference]: Start difference. First operand has 91 places, 70 transitions, 503 flow. Second operand 8 states and 138 transitions. [2024-11-12 16:30:16,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 138 transitions, 1314 flow [2024-11-12 16:30:16,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 138 transitions, 1194 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-12 16:30:16,020 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 508 flow [2024-11-12 16:30:16,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-11-12 16:30:16,021 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 51 predicate places. [2024-11-12 16:30:16,021 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 508 flow [2024-11-12 16:30:16,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.428571428571429) internal successors, (188), 14 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:16,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:16,022 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:16,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 16:30:16,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 16:30:16,227 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:16,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1817878605, now seen corresponding path program 1 times [2024-11-12 16:30:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:16,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987467910] [2024-11-12 16:30:16,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:16,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:16,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987467910] [2024-11-12 16:30:16,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987467910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:16,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:30:16,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:30:16,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844407440] [2024-11-12 16:30:16,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:16,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:30:16,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:16,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:30:16,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:30:16,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-11-12 16:30:16,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:16,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:16,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-11-12 16:30:16,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:16,447 INFO L124 PetriNetUnfolderBase]: 341/861 cut-off events. [2024-11-12 16:30:16,447 INFO L125 PetriNetUnfolderBase]: For 7837/7949 co-relation queries the response was YES. [2024-11-12 16:30:16,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 861 events. 341/861 cut-off events. For 7837/7949 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5122 event pairs, 98 based on Foata normal form. 83/943 useless extension candidates. Maximal degree in co-relation 3530. Up to 322 conditions per place. [2024-11-12 16:30:16,454 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 58 selfloop transitions, 7 changer transitions 27/97 dead transitions. [2024-11-12 16:30:16,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 852 flow [2024-11-12 16:30:16,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:30:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:30:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-12 16:30:16,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-11-12 16:30:16,456 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 508 flow. Second operand 4 states and 91 transitions. [2024-11-12 16:30:16,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 852 flow [2024-11-12 16:30:16,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 97 transitions, 807 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-12 16:30:16,468 INFO L231 Difference]: Finished difference. Result has 90 places, 44 transitions, 308 flow [2024-11-12 16:30:16,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=90, PETRI_TRANSITIONS=44} [2024-11-12 16:30:16,468 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 50 predicate places. [2024-11-12 16:30:16,468 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 44 transitions, 308 flow [2024-11-12 16:30:16,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:16,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:16,469 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:16,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 16:30:16,469 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:16,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:16,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1362151489, now seen corresponding path program 2 times [2024-11-12 16:30:16,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:16,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670597541] [2024-11-12 16:30:16,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:16,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:16,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:16,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670597541] [2024-11-12 16:30:16,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670597541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:30:16,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769678649] [2024-11-12 16:30:16,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:30:16,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:16,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:30:16,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:30:16,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 16:30:16,858 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:30:16,858 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:30:16,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 16:30:16,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:30:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:17,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:30:17,212 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-12 16:30:17,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-12 16:30:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769678649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:30:17,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:30:17,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-12 16:30:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768944442] [2024-11-12 16:30:17,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:30:17,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 16:30:17,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 16:30:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2024-11-12 16:30:17,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-12 16:30:17,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 44 transitions, 308 flow. Second operand has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 22 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:17,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:17,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-12 16:30:17,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:19,023 INFO L124 PetriNetUnfolderBase]: 1077/2041 cut-off events. [2024-11-12 16:30:19,023 INFO L125 PetriNetUnfolderBase]: For 23082/23082 co-relation queries the response was YES. [2024-11-12 16:30:19,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9186 conditions, 2041 events. 1077/2041 cut-off events. For 23082/23082 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11064 event pairs, 83 based on Foata normal form. 89/2129 useless extension candidates. Maximal degree in co-relation 8953. Up to 472 conditions per place. [2024-11-12 16:30:19,044 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 206 selfloop transitions, 51 changer transitions 0/260 dead transitions. [2024-11-12 16:30:19,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 260 transitions, 2393 flow [2024-11-12 16:30:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 16:30:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 16:30:19,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 454 transitions. [2024-11-12 16:30:19,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4203703703703704 [2024-11-12 16:30:19,046 INFO L175 Difference]: Start difference. First operand has 90 places, 44 transitions, 308 flow. Second operand 27 states and 454 transitions. [2024-11-12 16:30:19,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 260 transitions, 2393 flow [2024-11-12 16:30:19,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 260 transitions, 1728 flow, removed 318 selfloop flow, removed 17 redundant places. [2024-11-12 16:30:19,069 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 775 flow [2024-11-12 16:30:19,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=775, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-11-12 16:30:19,070 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-11-12 16:30:19,070 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 775 flow [2024-11-12 16:30:19,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 22 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:19,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:19,071 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:19,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 16:30:19,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:19,275 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:19,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1220742636, now seen corresponding path program 3 times [2024-11-12 16:30:19,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329946029] [2024-11-12 16:30:19,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 16:30:19,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:19,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329946029] [2024-11-12 16:30:19,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329946029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:30:19,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733575673] [2024-11-12 16:30:19,875 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:30:19,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:19,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:30:19,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:30:19,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 16:30:19,954 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:30:19,954 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:30:19,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 16:30:19,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:30:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-12 16:30:20,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 16:30:20,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733575673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:30:20,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 16:30:20,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2024-11-12 16:30:20,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36726681] [2024-11-12 16:30:20,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:30:20,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:30:20,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:20,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:30:20,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-12 16:30:20,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-12 16:30:20,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 775 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:20,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:20,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-12 16:30:20,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:20,358 INFO L124 PetriNetUnfolderBase]: 1286/2538 cut-off events. [2024-11-12 16:30:20,358 INFO L125 PetriNetUnfolderBase]: For 19568/19729 co-relation queries the response was YES. [2024-11-12 16:30:20,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11078 conditions, 2538 events. 1286/2538 cut-off events. For 19568/19729 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15019 event pairs, 227 based on Foata normal form. 44/2554 useless extension candidates. Maximal degree in co-relation 9014. Up to 1248 conditions per place. [2024-11-12 16:30:20,387 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 111 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-11-12 16:30:20,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 1459 flow [2024-11-12 16:30:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:30:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:30:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-11-12 16:30:20,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-12 16:30:20,388 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 775 flow. Second operand 5 states and 90 transitions. [2024-11-12 16:30:20,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 1459 flow [2024-11-12 16:30:20,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 137 transitions, 1256 flow, removed 98 selfloop flow, removed 5 redundant places. [2024-11-12 16:30:20,432 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 799 flow [2024-11-12 16:30:20,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=799, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-11-12 16:30:20,433 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-11-12 16:30:20,433 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 799 flow [2024-11-12 16:30:20,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:20,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:20,433 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:20,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 16:30:20,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:20,634 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:20,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1014694961, now seen corresponding path program 1 times [2024-11-12 16:30:20,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:20,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278465184] [2024-11-12 16:30:20,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:20,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:21,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278465184] [2024-11-12 16:30:21,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278465184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:30:21,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65661944] [2024-11-12 16:30:21,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:21,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:21,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:30:21,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:30:21,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 16:30:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:21,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-12 16:30:21,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:30:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:22,861 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:30:23,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 16:30:23,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2024-11-12 16:30:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:24,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65661944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:30:24,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:30:24,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 49 [2024-11-12 16:30:24,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624647553] [2024-11-12 16:30:24,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:30:24,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-12 16:30:24,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-12 16:30:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=2207, Unknown=0, NotChecked=0, Total=2450 [2024-11-12 16:30:24,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-12 16:30:24,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 799 flow. Second operand has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:24,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:24,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-12 16:30:24,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:28,043 INFO L124 PetriNetUnfolderBase]: 2849/5321 cut-off events. [2024-11-12 16:30:28,043 INFO L125 PetriNetUnfolderBase]: For 28538/28538 co-relation queries the response was YES. [2024-11-12 16:30:28,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21465 conditions, 5321 events. 2849/5321 cut-off events. For 28538/28538 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 34915 event pairs, 327 based on Foata normal form. 3/5324 useless extension candidates. Maximal degree in co-relation 17219. Up to 2991 conditions per place. [2024-11-12 16:30:28,083 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 210 selfloop transitions, 183 changer transitions 10/405 dead transitions. [2024-11-12 16:30:28,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 405 transitions, 3758 flow [2024-11-12 16:30:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-12 16:30:28,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-12 16:30:28,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 540 transitions. [2024-11-12 16:30:28,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29347826086956524 [2024-11-12 16:30:28,086 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 799 flow. Second operand 46 states and 540 transitions. [2024-11-12 16:30:28,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 405 transitions, 3758 flow [2024-11-12 16:30:28,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 405 transitions, 3681 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 16:30:28,162 INFO L231 Difference]: Finished difference. Result has 152 places, 278 transitions, 2964 flow [2024-11-12 16:30:28,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2964, PETRI_PLACES=152, PETRI_TRANSITIONS=278} [2024-11-12 16:30:28,163 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 112 predicate places. [2024-11-12 16:30:28,164 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 278 transitions, 2964 flow [2024-11-12 16:30:28,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:28,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:28,164 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:28,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 16:30:28,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:28,366 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:28,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1294291397, now seen corresponding path program 2 times [2024-11-12 16:30:28,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:28,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703153379] [2024-11-12 16:30:28,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:28,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:29,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703153379] [2024-11-12 16:30:29,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703153379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:30:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393133960] [2024-11-12 16:30:29,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:30:29,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:29,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:30:29,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:30:29,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 16:30:29,572 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:30:29,572 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:30:29,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-12 16:30:29,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:30:30,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-12 16:30:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:30,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:30:30,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 16:30:30,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2024-11-12 16:30:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:31,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393133960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:30:31,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:30:31,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-12 16:30:31,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950037814] [2024-11-12 16:30:31,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:30:31,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-12 16:30:31,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:31,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-12 16:30:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2310, Unknown=0, NotChecked=0, Total=2550 [2024-11-12 16:30:31,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-12 16:30:31,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 278 transitions, 2964 flow. Second operand has 51 states, 51 states have (on average 8.647058823529411) internal successors, (441), 51 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:31,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:31,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-12 16:30:31,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:43,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-12 16:30:47,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-12 16:30:51,408 INFO L124 PetriNetUnfolderBase]: 6047/11227 cut-off events. [2024-11-12 16:30:51,408 INFO L125 PetriNetUnfolderBase]: For 105294/105294 co-relation queries the response was YES. [2024-11-12 16:30:51,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57131 conditions, 11227 events. 6047/11227 cut-off events. For 105294/105294 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 79383 event pairs, 608 based on Foata normal form. 8/11235 useless extension candidates. Maximal degree in co-relation 56946. Up to 3519 conditions per place. [2024-11-12 16:30:51,532 INFO L140 encePairwiseOnDemand]: 23/40 looper letters, 504 selfloop transitions, 545 changer transitions 44/1095 dead transitions. [2024-11-12 16:30:51,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1095 transitions, 12773 flow [2024-11-12 16:30:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-12 16:30:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-11-12 16:30:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 1145 transitions. [2024-11-12 16:30:51,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34077380952380953 [2024-11-12 16:30:51,537 INFO L175 Difference]: Start difference. First operand has 152 places, 278 transitions, 2964 flow. Second operand 84 states and 1145 transitions. [2024-11-12 16:30:51,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1095 transitions, 12773 flow [2024-11-12 16:30:51,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1095 transitions, 12562 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-11-12 16:30:51,909 INFO L231 Difference]: Finished difference. Result has 264 places, 763 transitions, 10711 flow [2024-11-12 16:30:51,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=10711, PETRI_PLACES=264, PETRI_TRANSITIONS=763} [2024-11-12 16:30:51,910 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2024-11-12 16:30:51,910 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 763 transitions, 10711 flow [2024-11-12 16:30:51,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.647058823529411) internal successors, (441), 51 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:51,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:30:51,911 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:30:51,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 16:30:52,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:52,112 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:30:52,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:30:52,112 INFO L85 PathProgramCache]: Analyzing trace with hash -71684467, now seen corresponding path program 3 times [2024-11-12 16:30:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:30:52,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449117484] [2024-11-12 16:30:52,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:30:52,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:30:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:30:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:30:53,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:30:53,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449117484] [2024-11-12 16:30:53,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449117484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:30:53,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172073735] [2024-11-12 16:30:53,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:30:53,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:30:53,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:30:53,275 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:30:53,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 16:30:53,355 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:30:53,356 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:30:53,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-12 16:30:53,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:30:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 16:30:53,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:30:54,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 16:30:54,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-12 16:30:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 16:30:54,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172073735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:30:54,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:30:54,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 40 [2024-11-12 16:30:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916843575] [2024-11-12 16:30:54,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:30:54,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-12 16:30:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:30:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-12 16:30:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1508, Unknown=0, NotChecked=0, Total=1640 [2024-11-12 16:30:54,858 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-12 16:30:54,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 763 transitions, 10711 flow. Second operand has 41 states, 41 states have (on average 8.926829268292684) internal successors, (366), 41 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:30:54,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:30:54,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-12 16:30:54,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:30:59,518 INFO L124 PetriNetUnfolderBase]: 6237/11688 cut-off events. [2024-11-12 16:30:59,518 INFO L125 PetriNetUnfolderBase]: For 199888/199888 co-relation queries the response was YES. [2024-11-12 16:30:59,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76456 conditions, 11688 events. 6237/11688 cut-off events. For 199888/199888 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 84478 event pairs, 652 based on Foata normal form. 8/11696 useless extension candidates. Maximal degree in co-relation 76180. Up to 6606 conditions per place. [2024-11-12 16:30:59,676 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 513 selfloop transitions, 463 changer transitions 18/996 dead transitions. [2024-11-12 16:30:59,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 996 transitions, 15345 flow [2024-11-12 16:30:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-12 16:30:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-12 16:30:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 429 transitions. [2024-11-12 16:30:59,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3154411764705882 [2024-11-12 16:30:59,679 INFO L175 Difference]: Start difference. First operand has 264 places, 763 transitions, 10711 flow. Second operand 34 states and 429 transitions. [2024-11-12 16:30:59,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 996 transitions, 15345 flow [2024-11-12 16:31:00,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 996 transitions, 13358 flow, removed 983 selfloop flow, removed 9 redundant places. [2024-11-12 16:31:00,948 INFO L231 Difference]: Finished difference. Result has 295 places, 837 transitions, 11693 flow [2024-11-12 16:31:00,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9020, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=11693, PETRI_PLACES=295, PETRI_TRANSITIONS=837} [2024-11-12 16:31:00,949 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 255 predicate places. [2024-11-12 16:31:00,949 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 837 transitions, 11693 flow [2024-11-12 16:31:00,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.926829268292684) internal successors, (366), 41 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:00,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:00,950 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:00,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 16:31:01,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-12 16:31:01,151 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:31:01,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1361903431, now seen corresponding path program 4 times [2024-11-12 16:31:01,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:01,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548100734] [2024-11-12 16:31:01,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:31:02,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:02,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548100734] [2024-11-12 16:31:02,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548100734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:02,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902984634] [2024-11-12 16:31:02,082 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:31:02,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:02,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:02,084 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:02,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 16:31:02,187 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:31:02,188 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:02,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-12 16:31:02,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:31:03,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:03,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 16:31:03,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-12 16:31:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:31:04,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902984634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:04,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:04,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 49 [2024-11-12 16:31:04,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257748756] [2024-11-12 16:31:04,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:04,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-12 16:31:04,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-12 16:31:04,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=2214, Unknown=0, NotChecked=0, Total=2450 [2024-11-12 16:31:04,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-12 16:31:04,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 837 transitions, 11693 flow. Second operand has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:04,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:04,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-12 16:31:04,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:31:12,913 INFO L124 PetriNetUnfolderBase]: 6349/11905 cut-off events. [2024-11-12 16:31:12,913 INFO L125 PetriNetUnfolderBase]: For 214454/214454 co-relation queries the response was YES. [2024-11-12 16:31:13,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80602 conditions, 11905 events. 6349/11905 cut-off events. For 214454/214454 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 86294 event pairs, 631 based on Foata normal form. 3/11908 useless extension candidates. Maximal degree in co-relation 80287. Up to 6758 conditions per place. [2024-11-12 16:31:13,173 INFO L140 encePairwiseOnDemand]: 24/40 looper letters, 514 selfloop transitions, 587 changer transitions 11/1114 dead transitions. [2024-11-12 16:31:13,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1114 transitions, 16802 flow [2024-11-12 16:31:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-12 16:31:13,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-12 16:31:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 586 transitions. [2024-11-12 16:31:13,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31170212765957445 [2024-11-12 16:31:13,176 INFO L175 Difference]: Start difference. First operand has 295 places, 837 transitions, 11693 flow. Second operand 47 states and 586 transitions. [2024-11-12 16:31:13,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1114 transitions, 16802 flow [2024-11-12 16:31:14,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 1114 transitions, 16458 flow, removed 151 selfloop flow, removed 11 redundant places. [2024-11-12 16:31:14,492 INFO L231 Difference]: Finished difference. Result has 347 places, 951 transitions, 15181 flow [2024-11-12 16:31:14,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11437, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=15181, PETRI_PLACES=347, PETRI_TRANSITIONS=951} [2024-11-12 16:31:14,494 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 307 predicate places. [2024-11-12 16:31:14,494 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 951 transitions, 15181 flow [2024-11-12 16:31:14,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.68) internal successors, (434), 50 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:14,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:31:14,494 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:31:14,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 16:31:14,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-12 16:31:14,695 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-12 16:31:14,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:31:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1738699695, now seen corresponding path program 5 times [2024-11-12 16:31:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:31:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070868782] [2024-11-12 16:31:14,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:31:14,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:31:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:31:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:31:15,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:31:15,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070868782] [2024-11-12 16:31:15,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070868782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:31:15,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111777433] [2024-11-12 16:31:15,683 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:31:15,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:31:15,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:31:15,685 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:31:15,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 16:31:15,776 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-12 16:31:15,776 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:31:15,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-12 16:31:15,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:31:16,645 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 16:31:16,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-12 16:31:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:31:17,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:31:17,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 16:31:17,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-12 16:31:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:31:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111777433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:31:18,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:31:18,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-12 16:31:18,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721632330] [2024-11-12 16:31:18,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:31:18,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-12 16:31:18,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:31:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-12 16:31:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2363, Unknown=0, NotChecked=0, Total=2550 [2024-11-12 16:31:18,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-12 16:31:18,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 951 transitions, 15181 flow. Second operand has 51 states, 51 states have (on average 8.647058823529411) internal successors, (441), 51 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:31:18,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:31:18,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-12 16:31:18,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand