./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:09:23,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:09:23,368 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:09:23,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:09:23,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:09:23,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:09:23,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:09:23,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:09:23,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:09:23,385 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:09:23,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:09:23,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:09:23,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:09:23,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:09:23,386 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:09:23,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:09:23,386 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:09:23,387 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:09:23,388 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:09:23,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:09:23,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:09:23,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:09:23,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:09:23,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:09:23,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:09:23,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:09:23,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:09:23,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:09:23,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:09:23,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:09:23,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:09:23,389 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2025-02-06 13:09:23,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:09:23,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:09:23,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:09:23,596 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:09:23,597 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:09:23,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2025-02-06 13:09:24,755 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8f214be45/f7179cec0a914c29831169733e350566/FLAG16fc124cf [2025-02-06 13:09:25,010 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:09:25,015 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2025-02-06 13:09:25,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8f214be45/f7179cec0a914c29831169733e350566/FLAG16fc124cf [2025-02-06 13:09:25,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8f214be45/f7179cec0a914c29831169733e350566 [2025-02-06 13:09:25,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:09:25,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:09:25,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:09:25,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:09:25,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:09:25,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4448f301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25, skipping insertion in model container [2025-02-06 13:09:25,057 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:09:25,202 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 13:09:25,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:09:25,213 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:09:25,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:09:25,247 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:09:25,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25 WrapperNode [2025-02-06 13:09:25,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:09:25,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:09:25,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:09:25,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:09:25,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,278 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 239 [2025-02-06 13:09:25,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:09:25,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:09:25,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:09:25,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:09:25,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,299 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-06 13:09:25,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,307 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,307 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,309 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:09:25,311 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:09:25,311 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:09:25,311 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:09:25,312 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (1/1) ... [2025-02-06 13:09:25,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:09:25,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:09:25,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:09:25,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:09:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:09:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 13:09:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 13:09:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 13:09:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 13:09:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 13:09:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 13:09:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:09:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 13:09:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 13:09:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 13:09:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 13:09:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 13:09:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 13:09:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:09:25,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:09:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 13:09:25,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 13:09:25,355 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:09:25,421 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:09:25,423 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:09:25,675 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:09:25,675 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:09:25,961 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:09:25,962 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:09:25,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:09:25 BoogieIcfgContainer [2025-02-06 13:09:25,962 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:09:25,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:09:25,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:09:25,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:09:25,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:09:25" (1/3) ... [2025-02-06 13:09:25,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efd1571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:09:25, skipping insertion in model container [2025-02-06 13:09:25,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:09:25" (2/3) ... [2025-02-06 13:09:25,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efd1571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:09:25, skipping insertion in model container [2025-02-06 13:09:25,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:09:25" (3/3) ... [2025-02-06 13:09:25,970 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2025-02-06 13:09:25,980 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:09:25,982 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-3-nl.wvr.c that has 4 procedures, 56 locations, 1 initial locations, 5 loop locations, and 16 error locations. [2025-02-06 13:09:25,982 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:09:26,043 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 13:09:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 145 flow [2025-02-06 13:09:26,102 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2025-02-06 13:09:26,104 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 13:09:26,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 7/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 148 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2025-02-06 13:09:26,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 62 transitions, 145 flow [2025-02-06 13:09:26,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 134 flow [2025-02-06 13:09:26,120 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:09:26,131 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;@5683c94a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:09:26,132 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-02-06 13:09:26,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:09:26,138 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2025-02-06 13:09:26,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:09:26,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:26,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 13:09:26,140 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:26,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:26,144 INFO L85 PathProgramCache]: Analyzing trace with hash 674487, now seen corresponding path program 1 times [2025-02-06 13:09:26,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129811291] [2025-02-06 13:09:26,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:26,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:26,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 13:09:26,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 13:09:26,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:26,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:26,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:26,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129811291] [2025-02-06 13:09:26,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129811291] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:26,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:26,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:09:26,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341419037] [2025-02-06 13:09:26,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:26,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:09:26,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:26,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:09:26,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:09:26,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:26,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2025-02-06 13:09:26,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:26,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:26,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:27,108 INFO L124 PetriNetUnfolderBase]: 4012/6149 cut-off events. [2025-02-06 13:09:27,108 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2025-02-06 13:09:27,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11850 conditions, 6149 events. 4012/6149 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 37677 event pairs, 3528 based on Foata normal form. 379/4397 useless extension candidates. Maximal degree in co-relation 11330. Up to 5391 conditions per place. [2025-02-06 13:09:27,146 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 40 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2025-02-06 13:09:27,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 206 flow [2025-02-06 13:09:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:09:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:09:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2025-02-06 13:09:27,154 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2025-02-06 13:09:27,155 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 134 flow. Second operand 3 states and 89 transitions. [2025-02-06 13:09:27,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 206 flow [2025-02-06 13:09:27,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 13:09:27,165 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 114 flow [2025-02-06 13:09:27,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2025-02-06 13:09:27,168 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2025-02-06 13:09:27,169 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 114 flow [2025-02-06 13:09:27,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2025-02-06 13:09:27,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:27,169 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 13:09:27,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:09:27,169 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:27,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash 674488, now seen corresponding path program 1 times [2025-02-06 13:09:27,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:27,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765751348] [2025-02-06 13:09:27,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:27,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:27,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 13:09:27,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 13:09:27,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:27,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:27,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765751348] [2025-02-06 13:09:27,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765751348] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:27,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:27,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:09:27,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908212762] [2025-02-06 13:09:27,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:27,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:09:27,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:27,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:09:27,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:09:27,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:27,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:27,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:27,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:27,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:27,845 INFO L124 PetriNetUnfolderBase]: 4013/6152 cut-off events. [2025-02-06 13:09:27,845 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2025-02-06 13:09:27,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11669 conditions, 6152 events. 4013/6152 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 37735 event pairs, 3528 based on Foata normal form. 0/4019 useless extension candidates. Maximal degree in co-relation 11640. Up to 5400 conditions per place. [2025-02-06 13:09:27,870 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2025-02-06 13:09:27,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 214 flow [2025-02-06 13:09:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:09:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:09:27,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-02-06 13:09:27,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2025-02-06 13:09:27,871 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 114 flow. Second operand 4 states and 104 transitions. [2025-02-06 13:09:27,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 214 flow [2025-02-06 13:09:27,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:27,873 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 137 flow [2025-02-06 13:09:27,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2025-02-06 13:09:27,874 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2025-02-06 13:09:27,874 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 137 flow [2025-02-06 13:09:27,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:27,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:27,874 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 13:09:27,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:09:27,875 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:27,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash 20911051, now seen corresponding path program 1 times [2025-02-06 13:09:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:27,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880076352] [2025-02-06 13:09:27,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:27,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 13:09:27,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 13:09:27,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:27,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:28,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880076352] [2025-02-06 13:09:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880076352] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:09:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183459921] [2025-02-06 13:09:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:28,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:09:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:28,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:09:28,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:09:28,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:28,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:28,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:28,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:28,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:28,547 INFO L124 PetriNetUnfolderBase]: 4014/6155 cut-off events. [2025-02-06 13:09:28,547 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2025-02-06 13:09:28,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11686 conditions, 6155 events. 4014/6155 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 37790 event pairs, 3528 based on Foata normal form. 0/4021 useless extension candidates. Maximal degree in co-relation 11661. Up to 5399 conditions per place. [2025-02-06 13:09:28,573 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2025-02-06 13:09:28,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 243 flow [2025-02-06 13:09:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:09:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:09:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2025-02-06 13:09:28,574 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2025-02-06 13:09:28,574 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 137 flow. Second operand 5 states and 121 transitions. [2025-02-06 13:09:28,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 243 flow [2025-02-06 13:09:28,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 13:09:28,576 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 171 flow [2025-02-06 13:09:28,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2025-02-06 13:09:28,576 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2025-02-06 13:09:28,577 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 171 flow [2025-02-06 13:09:28,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:28,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:28,577 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2025-02-06 13:09:28,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:09:28,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:28,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:28,577 INFO L85 PathProgramCache]: Analyzing trace with hash 648203976, now seen corresponding path program 1 times [2025-02-06 13:09:28,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:28,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601647517] [2025-02-06 13:09:28,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:28,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 13:09:28,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 13:09:28,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:28,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:28,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:28,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601647517] [2025-02-06 13:09:28,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601647517] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:09:28,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649438680] [2025-02-06 13:09:28,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:28,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:09:28,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:09:28,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:09:28,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 13:09:28,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 13:09:28,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 13:09:28,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:28,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:28,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 13:09:28,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:09:28,866 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 10 treesize of output 9 [2025-02-06 13:09:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:29,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:09:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:29,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649438680] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:09:29,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:09:29,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2025-02-06 13:09:29,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705803762] [2025-02-06 13:09:29,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:09:29,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:29,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:29,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:29,131 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:29,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 171 flow. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:29,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:29,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:29,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:29,777 INFO L124 PetriNetUnfolderBase]: 4015/6157 cut-off events. [2025-02-06 13:09:29,778 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2025-02-06 13:09:29,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11709 conditions, 6157 events. 4015/6157 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 37755 event pairs, 3528 based on Foata normal form. 0/4026 useless extension candidates. Maximal degree in co-relation 11671. Up to 5400 conditions per place. [2025-02-06 13:09:29,796 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 42 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2025-02-06 13:09:29,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 286 flow [2025-02-06 13:09:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 13:09:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 13:09:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2025-02-06 13:09:29,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3286290322580645 [2025-02-06 13:09:29,797 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 171 flow. Second operand 8 states and 163 transitions. [2025-02-06 13:09:29,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 286 flow [2025-02-06 13:09:29,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 13:09:29,799 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 201 flow [2025-02-06 13:09:29,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=201, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2025-02-06 13:09:29,799 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2025-02-06 13:09:29,799 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 201 flow [2025-02-06 13:09:29,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 11 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:29,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:29,800 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 13:09:29,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 13:09:30,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:09:30,006 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:30,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:30,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1379294675, now seen corresponding path program 1 times [2025-02-06 13:09:30,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:30,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006579116] [2025-02-06 13:09:30,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:30,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 13:09:30,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 13:09:30,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:30,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:30,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006579116] [2025-02-06 13:09:30,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006579116] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:09:30,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330403358] [2025-02-06 13:09:30,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:30,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:09:30,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:09:30,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:09:30,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 13:09:30,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 13:09:30,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 13:09:30,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:30,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:30,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 13:09:30,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:09:30,313 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 10 treesize of output 9 [2025-02-06 13:09:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:30,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:09:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:30,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330403358] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:09:30,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:09:30,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-02-06 13:09:30,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833040514] [2025-02-06 13:09:30,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:09:30,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 13:09:30,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:30,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 13:09:30,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-06 13:09:30,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:30,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 201 flow. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:30,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:30,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:30,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:31,194 INFO L124 PetriNetUnfolderBase]: 4015/6156 cut-off events. [2025-02-06 13:09:31,195 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2025-02-06 13:09:31,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11716 conditions, 6156 events. 4015/6156 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 37766 event pairs, 3528 based on Foata normal form. 0/4026 useless extension candidates. Maximal degree in co-relation 11670. Up to 5391 conditions per place. [2025-02-06 13:09:31,213 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 36 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2025-02-06 13:09:31,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 299 flow [2025-02-06 13:09:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:09:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:09:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2025-02-06 13:09:31,214 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2025-02-06 13:09:31,214 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 201 flow. Second operand 7 states and 147 transitions. [2025-02-06 13:09:31,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 299 flow [2025-02-06 13:09:31,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 252 flow, removed 6 selfloop flow, removed 8 redundant places. [2025-02-06 13:09:31,216 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 180 flow [2025-02-06 13:09:31,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2025-02-06 13:09:31,216 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2025-02-06 13:09:31,217 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 180 flow [2025-02-06 13:09:31,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:31,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:31,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:31,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 13:09:31,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:09:31,418 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:31,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash 194738243, now seen corresponding path program 1 times [2025-02-06 13:09:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:31,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571900535] [2025-02-06 13:09:31,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:31,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:31,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 13:09:31,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 13:09:31,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:31,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:31,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571900535] [2025-02-06 13:09:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571900535] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:31,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:31,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:09:31,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446253103] [2025-02-06 13:09:31,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:31,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:09:31,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:31,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:09:31,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:09:31,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-06 13:09:31,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:31,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:31,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-06 13:09:31,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:31,803 INFO L124 PetriNetUnfolderBase]: 4175/6451 cut-off events. [2025-02-06 13:09:31,803 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2025-02-06 13:09:31,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12278 conditions, 6451 events. 4175/6451 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 39359 event pairs, 3675 based on Foata normal form. 112/4467 useless extension candidates. Maximal degree in co-relation 11664. Up to 5403 conditions per place. [2025-02-06 13:09:31,820 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 66 selfloop transitions, 5 changer transitions 1/80 dead transitions. [2025-02-06 13:09:31,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 395 flow [2025-02-06 13:09:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:09:31,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:09:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2025-02-06 13:09:31,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-06 13:09:31,821 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 180 flow. Second operand 5 states and 155 transitions. [2025-02-06 13:09:31,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 395 flow [2025-02-06 13:09:31,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 354 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-02-06 13:09:31,823 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 198 flow [2025-02-06 13:09:31,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2025-02-06 13:09:31,823 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2025-02-06 13:09:31,824 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 198 flow [2025-02-06 13:09:31,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:31,824 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:31,824 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:31,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 13:09:31,824 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:31,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1798534227, now seen corresponding path program 1 times [2025-02-06 13:09:31,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:31,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496564038] [2025-02-06 13:09:31,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:31,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:31,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 13:09:31,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 13:09:31,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:31,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 13:09:32,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:32,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496564038] [2025-02-06 13:09:32,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496564038] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:09:32,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710098690] [2025-02-06 13:09:32,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:32,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:09:32,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:09:32,012 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:09:32,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 13:09:32,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 13:09:32,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 13:09:32,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:32,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:32,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 13:09:32,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:09:32,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 13:09:32,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 13:09:32,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-06 13:09:32,133 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 13:09:32,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-02-06 13:09:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 13:09:32,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:09:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710098690] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:32,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 13:09:32,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2025-02-06 13:09:32,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145353459] [2025-02-06 13:09:32,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:32,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:09:32,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:32,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:09:32,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 13:09:32,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:32,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:32,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:32,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:32,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:32,388 INFO L124 PetriNetUnfolderBase]: 3026/4651 cut-off events. [2025-02-06 13:09:32,388 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2025-02-06 13:09:32,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 4651 events. 3026/4651 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 26479 event pairs, 2670 based on Foata normal form. 0/3344 useless extension candidates. Maximal degree in co-relation 9222. Up to 4173 conditions per place. [2025-02-06 13:09:32,403 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 46 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2025-02-06 13:09:32,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 286 flow [2025-02-06 13:09:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:09:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:09:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-06 13:09:32,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2025-02-06 13:09:32,405 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 198 flow. Second operand 4 states and 98 transitions. [2025-02-06 13:09:32,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 286 flow [2025-02-06 13:09:32,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:32,406 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 189 flow [2025-02-06 13:09:32,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2025-02-06 13:09:32,407 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2025-02-06 13:09:32,407 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 189 flow [2025-02-06 13:09:32,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:32,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:32,407 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:32,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 13:09:32,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:09:32,611 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:32,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:32,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1798534226, now seen corresponding path program 1 times [2025-02-06 13:09:32,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:32,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595307782] [2025-02-06 13:09:32,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:32,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:32,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 13:09:32,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 13:09:32,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:32,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 13:09:32,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:32,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595307782] [2025-02-06 13:09:32,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595307782] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:32,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:32,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:09:32,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073072882] [2025-02-06 13:09:32,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:32,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:09:32,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:32,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:09:32,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:09:32,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:32,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:32,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:32,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:32,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:32,916 INFO L124 PetriNetUnfolderBase]: 2093/3246 cut-off events. [2025-02-06 13:09:32,916 INFO L125 PetriNetUnfolderBase]: For 390/390 co-relation queries the response was YES. [2025-02-06 13:09:32,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6623 conditions, 3246 events. 2093/3246 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 16997 event pairs, 1813 based on Foata normal form. 0/2613 useless extension candidates. Maximal degree in co-relation 6014. Up to 2894 conditions per place. [2025-02-06 13:09:32,928 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 40 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2025-02-06 13:09:32,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 271 flow [2025-02-06 13:09:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:09:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:09:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2025-02-06 13:09:32,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2025-02-06 13:09:32,930 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 189 flow. Second operand 5 states and 109 transitions. [2025-02-06 13:09:32,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 271 flow [2025-02-06 13:09:32,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:32,931 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 186 flow [2025-02-06 13:09:32,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2025-02-06 13:09:32,932 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2025-02-06 13:09:32,932 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 186 flow [2025-02-06 13:09:32,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:32,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:32,932 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:32,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 13:09:32,933 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:32,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1616033978, now seen corresponding path program 1 times [2025-02-06 13:09:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:32,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136873959] [2025-02-06 13:09:32,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:32,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:32,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 13:09:32,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 13:09:32,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:32,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:09:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:32,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136873959] [2025-02-06 13:09:32,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136873959] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:32,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:32,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:09:32,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159353126] [2025-02-06 13:09:32,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:32,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:09:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:32,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:09:32,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:09:32,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-06 13:09:32,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:32,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:32,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-06 13:09:32,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:33,173 INFO L124 PetriNetUnfolderBase]: 1935/3060 cut-off events. [2025-02-06 13:09:33,173 INFO L125 PetriNetUnfolderBase]: For 428/428 co-relation queries the response was YES. [2025-02-06 13:09:33,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6328 conditions, 3060 events. 1935/3060 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15505 event pairs, 695 based on Foata normal form. 71/2570 useless extension candidates. Maximal degree in co-relation 6058. Up to 2082 conditions per place. [2025-02-06 13:09:33,185 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 57 selfloop transitions, 2 changer transitions 3/70 dead transitions. [2025-02-06 13:09:33,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 348 flow [2025-02-06 13:09:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:09:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:09:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2025-02-06 13:09:33,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2025-02-06 13:09:33,186 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 186 flow. Second operand 3 states and 102 transitions. [2025-02-06 13:09:33,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 348 flow [2025-02-06 13:09:33,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 337 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 13:09:33,188 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 169 flow [2025-02-06 13:09:33,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2025-02-06 13:09:33,188 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2025-02-06 13:09:33,188 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 169 flow [2025-02-06 13:09:33,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:33,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:33,188 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:33,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 13:09:33,189 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:33,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:33,189 INFO L85 PathProgramCache]: Analyzing trace with hash -693054343, now seen corresponding path program 1 times [2025-02-06 13:09:33,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:33,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432615407] [2025-02-06 13:09:33,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:33,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:33,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 13:09:33,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 13:09:33,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:33,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 13:09:33,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:33,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432615407] [2025-02-06 13:09:33,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432615407] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:33,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:33,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:09:33,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135840197] [2025-02-06 13:09:33,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:33,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:09:33,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:33,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:09:33,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:09:33,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-06 13:09:33,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:33,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:33,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-06 13:09:33,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:33,415 INFO L124 PetriNetUnfolderBase]: 1664/2605 cut-off events. [2025-02-06 13:09:33,415 INFO L125 PetriNetUnfolderBase]: For 506/509 co-relation queries the response was YES. [2025-02-06 13:09:33,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5810 conditions, 2605 events. 1664/2605 cut-off events. For 506/509 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12366 event pairs, 717 based on Foata normal form. 15/2263 useless extension candidates. Maximal degree in co-relation 5774. Up to 2249 conditions per place. [2025-02-06 13:09:33,427 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 52 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2025-02-06 13:09:33,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 305 flow [2025-02-06 13:09:33,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:09:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:09:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-02-06 13:09:33,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2025-02-06 13:09:33,429 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 169 flow. Second operand 3 states and 95 transitions. [2025-02-06 13:09:33,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 305 flow [2025-02-06 13:09:33,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 299 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:33,430 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 186 flow [2025-02-06 13:09:33,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2025-02-06 13:09:33,431 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2025-02-06 13:09:33,431 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 186 flow [2025-02-06 13:09:33,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:33,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:33,431 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:33,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 13:09:33,431 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:33,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:33,432 INFO L85 PathProgramCache]: Analyzing trace with hash 790446900, now seen corresponding path program 1 times [2025-02-06 13:09:33,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:33,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510784571] [2025-02-06 13:09:33,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:33,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:33,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 13:09:33,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:09:33,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:33,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 13:09:33,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:33,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510784571] [2025-02-06 13:09:33,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510784571] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:33,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:33,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:09:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151236047] [2025-02-06 13:09:33,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:33,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:09:33,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:33,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:09:33,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:09:33,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:33,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:33,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:33,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:33,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:33,658 INFO L124 PetriNetUnfolderBase]: 1256/2037 cut-off events. [2025-02-06 13:09:33,659 INFO L125 PetriNetUnfolderBase]: For 1067/1067 co-relation queries the response was YES. [2025-02-06 13:09:33,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4808 conditions, 2037 events. 1256/2037 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9635 event pairs, 929 based on Foata normal form. 0/1883 useless extension candidates. Maximal degree in co-relation 4771. Up to 1767 conditions per place. [2025-02-06 13:09:33,667 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 42 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2025-02-06 13:09:33,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 270 flow [2025-02-06 13:09:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:09:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:09:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-02-06 13:09:33,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2025-02-06 13:09:33,668 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 186 flow. Second operand 4 states and 92 transitions. [2025-02-06 13:09:33,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 270 flow [2025-02-06 13:09:33,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 257 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:33,670 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 173 flow [2025-02-06 13:09:33,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2025-02-06 13:09:33,670 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2025-02-06 13:09:33,670 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 173 flow [2025-02-06 13:09:33,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:33,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:33,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:33,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 13:09:33,671 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:33,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:33,671 INFO L85 PathProgramCache]: Analyzing trace with hash -162258713, now seen corresponding path program 1 times [2025-02-06 13:09:33,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:33,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680739701] [2025-02-06 13:09:33,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:33,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:33,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 13:09:33,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:09:33,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:33,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 13:09:33,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680739701] [2025-02-06 13:09:33,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680739701] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:33,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:33,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:09:33,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952762194] [2025-02-06 13:09:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:33,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:09:33,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:33,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:09:33,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:09:33,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-06 13:09:33,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:33,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:33,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-06 13:09:33,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:33,908 INFO L124 PetriNetUnfolderBase]: 1497/2483 cut-off events. [2025-02-06 13:09:33,908 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2025-02-06 13:09:33,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5420 conditions, 2483 events. 1497/2483 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 12334 event pairs, 1131 based on Foata normal form. 64/2395 useless extension candidates. Maximal degree in co-relation 5383. Up to 1777 conditions per place. [2025-02-06 13:09:33,915 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 41 selfloop transitions, 3 changer transitions 19/71 dead transitions. [2025-02-06 13:09:33,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 349 flow [2025-02-06 13:09:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:09:33,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:09:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-02-06 13:09:33,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4798387096774194 [2025-02-06 13:09:33,916 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 173 flow. Second operand 4 states and 119 transitions. [2025-02-06 13:09:33,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 349 flow [2025-02-06 13:09:33,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:33,918 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 173 flow [2025-02-06 13:09:33,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2025-02-06 13:09:33,919 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2025-02-06 13:09:33,919 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 173 flow [2025-02-06 13:09:33,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:33,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:33,920 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:33,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 13:09:33,920 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:33,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2096815301, now seen corresponding path program 1 times [2025-02-06 13:09:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:33,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648032624] [2025-02-06 13:09:33,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:33,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:33,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 13:09:33,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:09:33,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:33,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 13:09:34,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:34,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648032624] [2025-02-06 13:09:34,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648032624] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:09:34,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723098854] [2025-02-06 13:09:34,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:34,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:09:34,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:09:34,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:09:34,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 13:09:34,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 13:09:34,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:09:34,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:34,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:34,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 13:09:34,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:09:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 13:09:34,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:09:34,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723098854] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:34,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 13:09:34,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-02-06 13:09:34,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657891642] [2025-02-06 13:09:34,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:34,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:09:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:34,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:09:34,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 13:09:34,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-06 13:09:34,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:34,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:34,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-06 13:09:34,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:34,355 INFO L124 PetriNetUnfolderBase]: 901/1518 cut-off events. [2025-02-06 13:09:34,355 INFO L125 PetriNetUnfolderBase]: For 481/481 co-relation queries the response was YES. [2025-02-06 13:09:34,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3315 conditions, 1518 events. 901/1518 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7030 event pairs, 653 based on Foata normal form. 97/1531 useless extension candidates. Maximal degree in co-relation 3276. Up to 1270 conditions per place. [2025-02-06 13:09:34,360 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 39 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2025-02-06 13:09:34,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 249 flow [2025-02-06 13:09:34,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:09:34,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:09:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-06 13:09:34,361 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2025-02-06 13:09:34,361 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 173 flow. Second operand 4 states and 98 transitions. [2025-02-06 13:09:34,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 249 flow [2025-02-06 13:09:34,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:34,362 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 166 flow [2025-02-06 13:09:34,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2025-02-06 13:09:34,363 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2025-02-06 13:09:34,363 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 166 flow [2025-02-06 13:09:34,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:34,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:34,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:34,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 13:09:34,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 13:09:34,564 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:34,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash 704380592, now seen corresponding path program 1 times [2025-02-06 13:09:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:34,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372130691] [2025-02-06 13:09:34,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:09:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:34,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 13:09:34,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:34,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:34,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:35,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:35,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372130691] [2025-02-06 13:09:35,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372130691] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:35,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:35,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:35,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980326773] [2025-02-06 13:09:35,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:35,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:35,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:35,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:35,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:35,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:35,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 166 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:35,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:35,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:35,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:35,749 INFO L124 PetriNetUnfolderBase]: 1303/2216 cut-off events. [2025-02-06 13:09:35,749 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2025-02-06 13:09:35,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 2216 events. 1303/2216 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11680 event pairs, 135 based on Foata normal form. 1/2154 useless extension candidates. Maximal degree in co-relation 4761. Up to 1406 conditions per place. [2025-02-06 13:09:35,756 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 106 selfloop transitions, 25 changer transitions 3/141 dead transitions. [2025-02-06 13:09:35,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 141 transitions, 681 flow [2025-02-06 13:09:35,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 13:09:35,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 13:09:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2025-02-06 13:09:35,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2025-02-06 13:09:35,757 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 166 flow. Second operand 12 states and 307 transitions. [2025-02-06 13:09:35,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 141 transitions, 681 flow [2025-02-06 13:09:35,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 141 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:35,759 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 297 flow [2025-02-06 13:09:35,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=297, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2025-02-06 13:09:35,759 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 12 predicate places. [2025-02-06 13:09:35,760 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 297 flow [2025-02-06 13:09:35,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:35,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:35,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:35,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 13:09:35,760 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:35,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:35,760 INFO L85 PathProgramCache]: Analyzing trace with hash 269676470, now seen corresponding path program 2 times [2025-02-06 13:09:35,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:35,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190805429] [2025-02-06 13:09:35,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:09:35,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:35,768 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:09:35,801 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:35,802 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:09:35,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:36,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:36,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190805429] [2025-02-06 13:09:36,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190805429] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:36,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:36,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:36,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780069766] [2025-02-06 13:09:36,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:36,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:36,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:36,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:36,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:36,270 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:36,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 297 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:36,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:36,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:36,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:36,730 INFO L124 PetriNetUnfolderBase]: 1464/2565 cut-off events. [2025-02-06 13:09:36,730 INFO L125 PetriNetUnfolderBase]: For 1574/1574 co-relation queries the response was YES. [2025-02-06 13:09:36,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6714 conditions, 2565 events. 1464/2565 cut-off events. For 1574/1574 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 14340 event pairs, 372 based on Foata normal form. 1/2481 useless extension candidates. Maximal degree in co-relation 6670. Up to 1741 conditions per place. [2025-02-06 13:09:36,738 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 105 selfloop transitions, 33 changer transitions 3/148 dead transitions. [2025-02-06 13:09:36,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 148 transitions, 866 flow [2025-02-06 13:09:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:36,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2025-02-06 13:09:36,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2025-02-06 13:09:36,741 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 297 flow. Second operand 11 states and 281 transitions. [2025-02-06 13:09:36,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 148 transitions, 866 flow [2025-02-06 13:09:36,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 148 transitions, 861 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:36,744 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 521 flow [2025-02-06 13:09:36,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=521, PETRI_PLACES=88, PETRI_TRANSITIONS=93} [2025-02-06 13:09:36,745 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2025-02-06 13:09:36,745 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 521 flow [2025-02-06 13:09:36,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:36,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:36,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:36,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 13:09:36,745 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:36,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1173196808, now seen corresponding path program 3 times [2025-02-06 13:09:36,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:36,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071298912] [2025-02-06 13:09:36,746 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:09:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:36,752 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:36,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 35 statements. [2025-02-06 13:09:36,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:09:36,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:37,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:37,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071298912] [2025-02-06 13:09:37,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071298912] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:37,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:37,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:37,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166671507] [2025-02-06 13:09:37,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:37,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:37,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:37,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:37,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:37,249 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:37,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 521 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:37,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:37,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:37,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:37,691 INFO L124 PetriNetUnfolderBase]: 1577/2776 cut-off events. [2025-02-06 13:09:37,692 INFO L125 PetriNetUnfolderBase]: For 3271/3283 co-relation queries the response was YES. [2025-02-06 13:09:37,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8117 conditions, 2776 events. 1577/2776 cut-off events. For 3271/3283 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15748 event pairs, 306 based on Foata normal form. 4/2698 useless extension candidates. Maximal degree in co-relation 8065. Up to 1798 conditions per place. [2025-02-06 13:09:37,703 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 118 selfloop transitions, 39 changer transitions 3/167 dead transitions. [2025-02-06 13:09:37,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 167 transitions, 1124 flow [2025-02-06 13:09:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 13:09:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 13:09:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2025-02-06 13:09:37,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41263440860215056 [2025-02-06 13:09:37,705 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 521 flow. Second operand 12 states and 307 transitions. [2025-02-06 13:09:37,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 167 transitions, 1124 flow [2025-02-06 13:09:37,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 1106 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-02-06 13:09:37,713 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 646 flow [2025-02-06 13:09:37,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=646, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2025-02-06 13:09:37,714 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 40 predicate places. [2025-02-06 13:09:37,715 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 646 flow [2025-02-06 13:09:37,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:37,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:37,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:37,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 13:09:37,716 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:37,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:37,716 INFO L85 PathProgramCache]: Analyzing trace with hash -696543786, now seen corresponding path program 4 times [2025-02-06 13:09:37,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:37,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62920185] [2025-02-06 13:09:37,717 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:09:37,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:37,723 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:09:37,737 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:37,737 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:09:37,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:38,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62920185] [2025-02-06 13:09:38,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62920185] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:38,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:38,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:38,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517321044] [2025-02-06 13:09:38,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:38,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:38,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:38,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:38,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:38,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:38,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 646 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:38,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:38,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:38,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:38,733 INFO L124 PetriNetUnfolderBase]: 1942/3384 cut-off events. [2025-02-06 13:09:38,733 INFO L125 PetriNetUnfolderBase]: For 6574/6598 co-relation queries the response was YES. [2025-02-06 13:09:38,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10535 conditions, 3384 events. 1942/3384 cut-off events. For 6574/6598 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 20256 event pairs, 450 based on Foata normal form. 7/3273 useless extension candidates. Maximal degree in co-relation 10479. Up to 2176 conditions per place. [2025-02-06 13:09:38,749 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 128 selfloop transitions, 43 changer transitions 3/180 dead transitions. [2025-02-06 13:09:38,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 180 transitions, 1339 flow [2025-02-06 13:09:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 13:09:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 13:09:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 301 transitions. [2025-02-06 13:09:38,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40456989247311825 [2025-02-06 13:09:38,751 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 646 flow. Second operand 12 states and 301 transitions. [2025-02-06 13:09:38,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 180 transitions, 1339 flow [2025-02-06 13:09:38,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 180 transitions, 1269 flow, removed 13 selfloop flow, removed 7 redundant places. [2025-02-06 13:09:38,761 INFO L231 Difference]: Finished difference. Result has 108 places, 108 transitions, 758 flow [2025-02-06 13:09:38,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=758, PETRI_PLACES=108, PETRI_TRANSITIONS=108} [2025-02-06 13:09:38,761 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 47 predicate places. [2025-02-06 13:09:38,761 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 108 transitions, 758 flow [2025-02-06 13:09:38,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:38,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:38,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:38,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 13:09:38,762 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:38,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash -516484298, now seen corresponding path program 5 times [2025-02-06 13:09:38,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:38,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453194503] [2025-02-06 13:09:38,762 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:09:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:38,771 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:38,783 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:38,784 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 13:09:38,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453194503] [2025-02-06 13:09:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453194503] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:39,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:39,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:39,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016702138] [2025-02-06 13:09:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:39,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:39,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:39,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:39,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:39,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:39,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 108 transitions, 758 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:39,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:39,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:39,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:39,708 INFO L124 PetriNetUnfolderBase]: 1744/3105 cut-off events. [2025-02-06 13:09:39,708 INFO L125 PetriNetUnfolderBase]: For 7654/7678 co-relation queries the response was YES. [2025-02-06 13:09:39,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10278 conditions, 3105 events. 1744/3105 cut-off events. For 7654/7678 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18543 event pairs, 410 based on Foata normal form. 16/3011 useless extension candidates. Maximal degree in co-relation 10218. Up to 2171 conditions per place. [2025-02-06 13:09:39,721 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 123 selfloop transitions, 38 changer transitions 3/171 dead transitions. [2025-02-06 13:09:39,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 171 transitions, 1344 flow [2025-02-06 13:09:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 13:09:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 13:09:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 298 transitions. [2025-02-06 13:09:39,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2025-02-06 13:09:39,723 INFO L175 Difference]: Start difference. First operand has 108 places, 108 transitions, 758 flow. Second operand 12 states and 298 transitions. [2025-02-06 13:09:39,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 171 transitions, 1344 flow [2025-02-06 13:09:39,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 171 transitions, 1256 flow, removed 23 selfloop flow, removed 6 redundant places. [2025-02-06 13:09:39,736 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 779 flow [2025-02-06 13:09:39,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=779, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2025-02-06 13:09:39,737 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 54 predicate places. [2025-02-06 13:09:39,737 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 779 flow [2025-02-06 13:09:39,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:39,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:39,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:39,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 13:09:39,737 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:39,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 147453064, now seen corresponding path program 6 times [2025-02-06 13:09:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:39,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273274367] [2025-02-06 13:09:39,738 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:09:39,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:39,749 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:39,768 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:39,768 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:09:39,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:40,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:40,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273274367] [2025-02-06 13:09:40,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273274367] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:40,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145842649] [2025-02-06 13:09:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:40,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:40,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:40,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:40,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:40,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:40,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 779 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:40,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:40,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:40,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:40,740 INFO L124 PetriNetUnfolderBase]: 1866/3336 cut-off events. [2025-02-06 13:09:40,740 INFO L125 PetriNetUnfolderBase]: For 8336/8360 co-relation queries the response was YES. [2025-02-06 13:09:40,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11080 conditions, 3336 events. 1866/3336 cut-off events. For 8336/8360 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20459 event pairs, 607 based on Foata normal form. 7/3221 useless extension candidates. Maximal degree in co-relation 11017. Up to 2438 conditions per place. [2025-02-06 13:09:40,755 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 130 selfloop transitions, 36 changer transitions 3/176 dead transitions. [2025-02-06 13:09:40,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 176 transitions, 1472 flow [2025-02-06 13:09:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2025-02-06 13:09:40,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2025-02-06 13:09:40,758 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 779 flow. Second operand 11 states and 280 transitions. [2025-02-06 13:09:40,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 176 transitions, 1472 flow [2025-02-06 13:09:40,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 176 transitions, 1386 flow, removed 6 selfloop flow, removed 9 redundant places. [2025-02-06 13:09:40,771 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 926 flow [2025-02-06 13:09:40,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=926, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2025-02-06 13:09:40,771 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 60 predicate places. [2025-02-06 13:09:40,771 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 926 flow [2025-02-06 13:09:40,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:40,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:40,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:40,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 13:09:40,771 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:40,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1182393514, now seen corresponding path program 7 times [2025-02-06 13:09:40,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:40,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532969045] [2025-02-06 13:09:40,772 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:09:40,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:40,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 13:09:40,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:40,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:40,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:41,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:41,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532969045] [2025-02-06 13:09:41,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532969045] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:41,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:41,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:41,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804300402] [2025-02-06 13:09:41,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:41,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:41,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:41,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:41,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:41,245 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:41,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 926 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:41,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:41,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:41,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:41,788 INFO L124 PetriNetUnfolderBase]: 2006/3584 cut-off events. [2025-02-06 13:09:41,790 INFO L125 PetriNetUnfolderBase]: For 13916/13952 co-relation queries the response was YES. [2025-02-06 13:09:41,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12669 conditions, 3584 events. 2006/3584 cut-off events. For 13916/13952 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22224 event pairs, 606 based on Foata normal form. 9/3471 useless extension candidates. Maximal degree in co-relation 12601. Up to 2643 conditions per place. [2025-02-06 13:09:41,806 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 139 selfloop transitions, 36 changer transitions 3/185 dead transitions. [2025-02-06 13:09:41,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 185 transitions, 1655 flow [2025-02-06 13:09:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2025-02-06 13:09:41,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40615835777126097 [2025-02-06 13:09:41,808 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 926 flow. Second operand 11 states and 277 transitions. [2025-02-06 13:09:41,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 185 transitions, 1655 flow [2025-02-06 13:09:41,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 185 transitions, 1568 flow, removed 36 selfloop flow, removed 2 redundant places. [2025-02-06 13:09:41,846 INFO L231 Difference]: Finished difference. Result has 133 places, 131 transitions, 1072 flow [2025-02-06 13:09:41,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1072, PETRI_PLACES=133, PETRI_TRANSITIONS=131} [2025-02-06 13:09:41,847 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 72 predicate places. [2025-02-06 13:09:41,847 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 131 transitions, 1072 flow [2025-02-06 13:09:41,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:41,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:41,847 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:41,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 13:09:41,847 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:41,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash 473806822, now seen corresponding path program 8 times [2025-02-06 13:09:41,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:41,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355248157] [2025-02-06 13:09:41,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:09:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:41,860 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:09:41,884 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:41,884 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:09:41,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:42,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:42,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355248157] [2025-02-06 13:09:42,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355248157] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:42,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:42,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:42,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231128129] [2025-02-06 13:09:42,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:42,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:42,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:42,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:42,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:42,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:42,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 131 transitions, 1072 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:42,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:42,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:42,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:42,788 INFO L124 PetriNetUnfolderBase]: 2188/3949 cut-off events. [2025-02-06 13:09:42,789 INFO L125 PetriNetUnfolderBase]: For 22679/22727 co-relation queries the response was YES. [2025-02-06 13:09:42,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14749 conditions, 3949 events. 2188/3949 cut-off events. For 22679/22727 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 25374 event pairs, 669 based on Foata normal form. 11/3827 useless extension candidates. Maximal degree in co-relation 14676. Up to 2850 conditions per place. [2025-02-06 13:09:42,808 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 157 selfloop transitions, 38 changer transitions 3/205 dead transitions. [2025-02-06 13:09:42,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 205 transitions, 1926 flow [2025-02-06 13:09:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 13:09:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 13:09:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2025-02-06 13:09:42,810 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2025-02-06 13:09:42,810 INFO L175 Difference]: Start difference. First operand has 133 places, 131 transitions, 1072 flow. Second operand 10 states and 268 transitions. [2025-02-06 13:09:42,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 205 transitions, 1926 flow [2025-02-06 13:09:42,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 205 transitions, 1798 flow, removed 47 selfloop flow, removed 5 redundant places. [2025-02-06 13:09:42,833 INFO L231 Difference]: Finished difference. Result has 140 places, 142 transitions, 1187 flow [2025-02-06 13:09:42,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1187, PETRI_PLACES=140, PETRI_TRANSITIONS=142} [2025-02-06 13:09:42,834 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 79 predicate places. [2025-02-06 13:09:42,834 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 142 transitions, 1187 flow [2025-02-06 13:09:42,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:42,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:42,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:42,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 13:09:42,835 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:42,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash 309399236, now seen corresponding path program 9 times [2025-02-06 13:09:42,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:42,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117787064] [2025-02-06 13:09:42,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:09:42,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:42,843 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:42,854 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 35 statements. [2025-02-06 13:09:42,854 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:09:42,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:43,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:43,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117787064] [2025-02-06 13:09:43,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117787064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:43,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:43,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:43,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846259897] [2025-02-06 13:09:43,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:43,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:43,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:43,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:43,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:43,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:43,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 142 transitions, 1187 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:43,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:43,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:43,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:43,796 INFO L124 PetriNetUnfolderBase]: 2375/4262 cut-off events. [2025-02-06 13:09:43,796 INFO L125 PetriNetUnfolderBase]: For 29826/29908 co-relation queries the response was YES. [2025-02-06 13:09:43,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16720 conditions, 4262 events. 2375/4262 cut-off events. For 29826/29908 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 27803 event pairs, 746 based on Foata normal form. 9/4129 useless extension candidates. Maximal degree in co-relation 16643. Up to 3150 conditions per place. [2025-02-06 13:09:43,819 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 167 selfloop transitions, 39 changer transitions 3/216 dead transitions. [2025-02-06 13:09:43,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 216 transitions, 2102 flow [2025-02-06 13:09:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2025-02-06 13:09:43,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2025-02-06 13:09:43,824 INFO L175 Difference]: Start difference. First operand has 140 places, 142 transitions, 1187 flow. Second operand 11 states and 290 transitions. [2025-02-06 13:09:43,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 216 transitions, 2102 flow [2025-02-06 13:09:43,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 216 transitions, 1988 flow, removed 48 selfloop flow, removed 3 redundant places. [2025-02-06 13:09:43,862 INFO L231 Difference]: Finished difference. Result has 152 places, 152 transitions, 1363 flow [2025-02-06 13:09:43,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1363, PETRI_PLACES=152, PETRI_TRANSITIONS=152} [2025-02-06 13:09:43,862 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 91 predicate places. [2025-02-06 13:09:43,862 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 152 transitions, 1363 flow [2025-02-06 13:09:43,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:43,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:43,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:43,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 13:09:43,863 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:43,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1106095878, now seen corresponding path program 10 times [2025-02-06 13:09:43,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:43,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110521844] [2025-02-06 13:09:43,864 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:09:43,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:43,869 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:09:43,882 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:43,883 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:09:43,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:44,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:44,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110521844] [2025-02-06 13:09:44,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110521844] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:44,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:44,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:44,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109224028] [2025-02-06 13:09:44,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:44,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:44,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:44,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:44,249 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:44,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 152 transitions, 1363 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:44,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:44,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:44,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:44,882 INFO L124 PetriNetUnfolderBase]: 2745/4848 cut-off events. [2025-02-06 13:09:44,882 INFO L125 PetriNetUnfolderBase]: For 41922/42084 co-relation queries the response was YES. [2025-02-06 13:09:44,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19552 conditions, 4848 events. 2745/4848 cut-off events. For 41922/42084 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 31987 event pairs, 947 based on Foata normal form. 29/4721 useless extension candidates. Maximal degree in co-relation 19469. Up to 3679 conditions per place. [2025-02-06 13:09:44,914 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 176 selfloop transitions, 39 changer transitions 3/224 dead transitions. [2025-02-06 13:09:44,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 224 transitions, 2301 flow [2025-02-06 13:09:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2025-02-06 13:09:44,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-02-06 13:09:44,916 INFO L175 Difference]: Start difference. First operand has 152 places, 152 transitions, 1363 flow. Second operand 11 states and 279 transitions. [2025-02-06 13:09:44,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 224 transitions, 2301 flow [2025-02-06 13:09:44,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 224 transitions, 2165 flow, removed 52 selfloop flow, removed 4 redundant places. [2025-02-06 13:09:44,966 INFO L231 Difference]: Finished difference. Result has 162 places, 161 transitions, 1516 flow [2025-02-06 13:09:44,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1516, PETRI_PLACES=162, PETRI_TRANSITIONS=161} [2025-02-06 13:09:44,967 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 101 predicate places. [2025-02-06 13:09:44,967 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 161 transitions, 1516 flow [2025-02-06 13:09:44,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:44,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:44,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:44,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-06 13:09:44,968 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:44,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash -754405138, now seen corresponding path program 11 times [2025-02-06 13:09:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:44,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974949184] [2025-02-06 13:09:44,968 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:09:44,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:44,973 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:44,983 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:44,983 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 13:09:44,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:45,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:45,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974949184] [2025-02-06 13:09:45,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974949184] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:45,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:45,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:45,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438046205] [2025-02-06 13:09:45,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:45,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:45,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:45,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:45,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:45,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:45,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 161 transitions, 1516 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:45,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:45,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:45,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:45,897 INFO L124 PetriNetUnfolderBase]: 2547/4529 cut-off events. [2025-02-06 13:09:45,897 INFO L125 PetriNetUnfolderBase]: For 41861/41931 co-relation queries the response was YES. [2025-02-06 13:09:45,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18768 conditions, 4529 events. 2547/4529 cut-off events. For 41861/41931 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 29662 event pairs, 899 based on Foata normal form. 19/4408 useless extension candidates. Maximal degree in co-relation 18679. Up to 3532 conditions per place. [2025-02-06 13:09:45,920 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 169 selfloop transitions, 37 changer transitions 4/217 dead transitions. [2025-02-06 13:09:45,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 217 transitions, 2261 flow [2025-02-06 13:09:45,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2025-02-06 13:09:45,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2025-02-06 13:09:45,922 INFO L175 Difference]: Start difference. First operand has 162 places, 161 transitions, 1516 flow. Second operand 11 states and 276 transitions. [2025-02-06 13:09:45,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 217 transitions, 2261 flow [2025-02-06 13:09:45,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 217 transitions, 2105 flow, removed 60 selfloop flow, removed 5 redundant places. [2025-02-06 13:09:45,970 INFO L231 Difference]: Finished difference. Result has 169 places, 165 transitions, 1485 flow [2025-02-06 13:09:45,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1485, PETRI_PLACES=169, PETRI_TRANSITIONS=165} [2025-02-06 13:09:45,971 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 108 predicate places. [2025-02-06 13:09:45,971 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 165 transitions, 1485 flow [2025-02-06 13:09:45,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:45,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:45,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:45,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-06 13:09:45,971 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:45,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1836584680, now seen corresponding path program 12 times [2025-02-06 13:09:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276932676] [2025-02-06 13:09:45,972 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:09:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:45,978 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:45,997 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:45,998 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:09:45,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:46,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276932676] [2025-02-06 13:09:46,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276932676] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:46,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:46,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:46,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756354410] [2025-02-06 13:09:46,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:46,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:46,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:46,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:46,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:46,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:46,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 165 transitions, 1485 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:46,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:46,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:46,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:46,893 INFO L124 PetriNetUnfolderBase]: 2583/4628 cut-off events. [2025-02-06 13:09:46,894 INFO L125 PetriNetUnfolderBase]: For 39791/39879 co-relation queries the response was YES. [2025-02-06 13:09:46,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18629 conditions, 4628 events. 2583/4628 cut-off events. For 39791/39879 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 30919 event pairs, 915 based on Foata normal form. 35/4503 useless extension candidates. Maximal degree in co-relation 18536. Up to 3663 conditions per place. [2025-02-06 13:09:46,921 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 170 selfloop transitions, 35 changer transitions 3/215 dead transitions. [2025-02-06 13:09:46,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 215 transitions, 2189 flow [2025-02-06 13:09:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2025-02-06 13:09:46,923 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2025-02-06 13:09:46,923 INFO L175 Difference]: Start difference. First operand has 169 places, 165 transitions, 1485 flow. Second operand 11 states and 269 transitions. [2025-02-06 13:09:46,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 215 transitions, 2189 flow [2025-02-06 13:09:47,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 215 transitions, 2085 flow, removed 17 selfloop flow, removed 8 redundant places. [2025-02-06 13:09:47,072 INFO L231 Difference]: Finished difference. Result has 173 places, 168 transitions, 1498 flow [2025-02-06 13:09:47,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1498, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2025-02-06 13:09:47,072 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 112 predicate places. [2025-02-06 13:09:47,072 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 1498 flow [2025-02-06 13:09:47,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:47,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:47,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:47,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-06 13:09:47,072 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:47,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1148948748, now seen corresponding path program 13 times [2025-02-06 13:09:47,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:47,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758364949] [2025-02-06 13:09:47,073 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:09:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:47,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 13:09:47,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:47,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:47,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:47,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:47,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758364949] [2025-02-06 13:09:47,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758364949] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:47,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:47,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:47,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122201538] [2025-02-06 13:09:47,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:47,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:47,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:47,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:47,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:47,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:47,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 1498 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:47,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:47,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:47,931 INFO L124 PetriNetUnfolderBase]: 2644/4741 cut-off events. [2025-02-06 13:09:47,931 INFO L125 PetriNetUnfolderBase]: For 39865/39953 co-relation queries the response was YES. [2025-02-06 13:09:47,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18868 conditions, 4741 events. 2644/4741 cut-off events. For 39865/39953 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 31917 event pairs, 970 based on Foata normal form. 27/4612 useless extension candidates. Maximal degree in co-relation 18773. Up to 3750 conditions per place. [2025-02-06 13:09:47,960 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 173 selfloop transitions, 36 changer transitions 4/220 dead transitions. [2025-02-06 13:09:47,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 220 transitions, 2216 flow [2025-02-06 13:09:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2025-02-06 13:09:47,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2025-02-06 13:09:47,961 INFO L175 Difference]: Start difference. First operand has 173 places, 168 transitions, 1498 flow. Second operand 11 states and 269 transitions. [2025-02-06 13:09:47,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 220 transitions, 2216 flow [2025-02-06 13:09:48,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 220 transitions, 2114 flow, removed 16 selfloop flow, removed 8 redundant places. [2025-02-06 13:09:48,020 INFO L231 Difference]: Finished difference. Result has 178 places, 174 transitions, 1549 flow [2025-02-06 13:09:48,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1549, PETRI_PLACES=178, PETRI_TRANSITIONS=174} [2025-02-06 13:09:48,020 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 117 predicate places. [2025-02-06 13:09:48,020 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 174 transitions, 1549 flow [2025-02-06 13:09:48,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:48,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:48,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:48,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-06 13:09:48,021 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:48,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash 885364592, now seen corresponding path program 14 times [2025-02-06 13:09:48,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:48,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22029279] [2025-02-06 13:09:48,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:09:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:48,026 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:09:48,039 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:48,039 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:09:48,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:48,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:48,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22029279] [2025-02-06 13:09:48,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22029279] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:48,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:48,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:48,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803937821] [2025-02-06 13:09:48,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:48,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:48,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:48,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:48,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:48,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:48,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 174 transitions, 1549 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:48,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:48,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:48,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:49,172 INFO L124 PetriNetUnfolderBase]: 2644/4739 cut-off events. [2025-02-06 13:09:49,173 INFO L125 PetriNetUnfolderBase]: For 40471/40559 co-relation queries the response was YES. [2025-02-06 13:09:49,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18957 conditions, 4739 events. 2644/4739 cut-off events. For 40471/40559 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 31892 event pairs, 891 based on Foata normal form. 35/4622 useless extension candidates. Maximal degree in co-relation 18859. Up to 3515 conditions per place. [2025-02-06 13:09:49,203 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 178 selfloop transitions, 46 changer transitions 5/236 dead transitions. [2025-02-06 13:09:49,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 236 transitions, 2323 flow [2025-02-06 13:09:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 287 transitions. [2025-02-06 13:09:49,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4208211143695015 [2025-02-06 13:09:49,204 INFO L175 Difference]: Start difference. First operand has 178 places, 174 transitions, 1549 flow. Second operand 11 states and 287 transitions. [2025-02-06 13:09:49,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 236 transitions, 2323 flow [2025-02-06 13:09:49,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 236 transitions, 2224 flow, removed 17 selfloop flow, removed 7 redundant places. [2025-02-06 13:09:49,267 INFO L231 Difference]: Finished difference. Result has 183 places, 178 transitions, 1606 flow [2025-02-06 13:09:49,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1606, PETRI_PLACES=183, PETRI_TRANSITIONS=178} [2025-02-06 13:09:49,268 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 122 predicate places. [2025-02-06 13:09:49,268 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 178 transitions, 1606 flow [2025-02-06 13:09:49,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:49,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:49,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:49,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-06 13:09:49,269 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:49,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1625158708, now seen corresponding path program 15 times [2025-02-06 13:09:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:49,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940507422] [2025-02-06 13:09:49,269 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:09:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:49,274 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:49,283 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 35 statements. [2025-02-06 13:09:49,283 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:09:49,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:49,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:49,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940507422] [2025-02-06 13:09:49,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940507422] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:49,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:49,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:49,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714427165] [2025-02-06 13:09:49,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:49,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:49,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:49,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:49,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:49,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:49,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 178 transitions, 1606 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:49,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:49,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:49,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:50,237 INFO L124 PetriNetUnfolderBase]: 2644/4737 cut-off events. [2025-02-06 13:09:50,238 INFO L125 PetriNetUnfolderBase]: For 41358/41446 co-relation queries the response was YES. [2025-02-06 13:09:50,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19115 conditions, 4737 events. 2644/4737 cut-off events. For 41358/41446 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 31857 event pairs, 976 based on Foata normal form. 27/4604 useless extension candidates. Maximal degree in co-relation 19015. Up to 3779 conditions per place. [2025-02-06 13:09:50,258 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 179 selfloop transitions, 35 changer transitions 3/224 dead transitions. [2025-02-06 13:09:50,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 224 transitions, 2278 flow [2025-02-06 13:09:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2025-02-06 13:09:50,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2025-02-06 13:09:50,260 INFO L175 Difference]: Start difference. First operand has 183 places, 178 transitions, 1606 flow. Second operand 11 states and 266 transitions. [2025-02-06 13:09:50,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 224 transitions, 2278 flow [2025-02-06 13:09:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 224 transitions, 2151 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-02-06 13:09:50,321 INFO L231 Difference]: Finished difference. Result has 188 places, 180 transitions, 1573 flow [2025-02-06 13:09:50,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1573, PETRI_PLACES=188, PETRI_TRANSITIONS=180} [2025-02-06 13:09:50,321 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 127 predicate places. [2025-02-06 13:09:50,322 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 180 transitions, 1573 flow [2025-02-06 13:09:50,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:50,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:50,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:50,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-06 13:09:50,322 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:50,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1180507646, now seen corresponding path program 16 times [2025-02-06 13:09:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711101529] [2025-02-06 13:09:50,323 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:09:50,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:50,327 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:09:50,335 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:50,336 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:09:50,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:50,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:50,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711101529] [2025-02-06 13:09:50,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711101529] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:50,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:50,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:50,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241689338] [2025-02-06 13:09:50,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:50,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:50,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:50,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:50,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:50,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:50,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 180 transitions, 1573 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:50,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:50,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:50,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:51,471 INFO L124 PetriNetUnfolderBase]: 3083/5485 cut-off events. [2025-02-06 13:09:51,471 INFO L125 PetriNetUnfolderBase]: For 53758/53830 co-relation queries the response was YES. [2025-02-06 13:09:51,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22735 conditions, 5485 events. 3083/5485 cut-off events. For 53758/53830 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 37865 event pairs, 1085 based on Foata normal form. 15/5326 useless extension candidates. Maximal degree in co-relation 22632. Up to 4056 conditions per place. [2025-02-06 13:09:51,506 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 208 selfloop transitions, 44 changer transitions 3/261 dead transitions. [2025-02-06 13:09:51,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 261 transitions, 2724 flow [2025-02-06 13:09:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 13:09:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 13:09:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 299 transitions. [2025-02-06 13:09:51,507 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4018817204301075 [2025-02-06 13:09:51,507 INFO L175 Difference]: Start difference. First operand has 188 places, 180 transitions, 1573 flow. Second operand 12 states and 299 transitions. [2025-02-06 13:09:51,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 261 transitions, 2724 flow [2025-02-06 13:09:51,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 261 transitions, 2656 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-02-06 13:09:51,602 INFO L231 Difference]: Finished difference. Result has 195 places, 192 transitions, 1858 flow [2025-02-06 13:09:51,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1858, PETRI_PLACES=195, PETRI_TRANSITIONS=192} [2025-02-06 13:09:51,603 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 134 predicate places. [2025-02-06 13:09:51,603 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 192 transitions, 1858 flow [2025-02-06 13:09:51,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:51,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:51,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:51,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-06 13:09:51,603 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:51,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1002842464, now seen corresponding path program 17 times [2025-02-06 13:09:51,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:51,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762759910] [2025-02-06 13:09:51,604 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:09:51,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:51,609 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:51,617 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:51,617 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 13:09:51,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:51,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:51,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762759910] [2025-02-06 13:09:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762759910] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:51,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:51,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976069738] [2025-02-06 13:09:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:51,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:51,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:51,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:51,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:51,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:51,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 192 transitions, 1858 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:51,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:51,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:51,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:52,733 INFO L124 PetriNetUnfolderBase]: 3084/5539 cut-off events. [2025-02-06 13:09:52,733 INFO L125 PetriNetUnfolderBase]: For 69614/69766 co-relation queries the response was YES. [2025-02-06 13:09:52,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24629 conditions, 5539 events. 3084/5539 cut-off events. For 69614/69766 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 38982 event pairs, 1008 based on Foata normal form. 43/5418 useless extension candidates. Maximal degree in co-relation 24522. Up to 4001 conditions per place. [2025-02-06 13:09:52,771 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 204 selfloop transitions, 54 changer transitions 3/268 dead transitions. [2025-02-06 13:09:52,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 268 transitions, 3071 flow [2025-02-06 13:09:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 13:09:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 13:09:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2025-02-06 13:09:52,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2025-02-06 13:09:52,773 INFO L175 Difference]: Start difference. First operand has 195 places, 192 transitions, 1858 flow. Second operand 12 states and 308 transitions. [2025-02-06 13:09:52,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 268 transitions, 3071 flow [2025-02-06 13:09:52,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 268 transitions, 2831 flow, removed 103 selfloop flow, removed 5 redundant places. [2025-02-06 13:09:52,863 INFO L231 Difference]: Finished difference. Result has 205 places, 203 transitions, 2033 flow [2025-02-06 13:09:52,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2033, PETRI_PLACES=205, PETRI_TRANSITIONS=203} [2025-02-06 13:09:52,864 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 144 predicate places. [2025-02-06 13:09:52,864 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 203 transitions, 2033 flow [2025-02-06 13:09:52,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:52,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:52,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:52,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-02-06 13:09:52,864 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:52,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash -456911184, now seen corresponding path program 18 times [2025-02-06 13:09:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:52,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244962656] [2025-02-06 13:09:52,865 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:09:52,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:52,869 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:52,879 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:52,879 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:09:52,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:53,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:53,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244962656] [2025-02-06 13:09:53,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244962656] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:53,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:53,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:53,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144903678] [2025-02-06 13:09:53,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:53,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:53,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:53,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:53,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:53,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:53,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 203 transitions, 2033 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:53,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:53,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:53,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:54,129 INFO L124 PetriNetUnfolderBase]: 3180/5705 cut-off events. [2025-02-06 13:09:54,130 INFO L125 PetriNetUnfolderBase]: For 80703/80807 co-relation queries the response was YES. [2025-02-06 13:09:54,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26156 conditions, 5705 events. 3180/5705 cut-off events. For 80703/80807 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 40350 event pairs, 1124 based on Foata normal form. 19/5557 useless extension candidates. Maximal degree in co-relation 26044. Up to 4273 conditions per place. [2025-02-06 13:09:54,166 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 213 selfloop transitions, 49 changer transitions 3/272 dead transitions. [2025-02-06 13:09:54,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 272 transitions, 3129 flow [2025-02-06 13:09:54,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 13:09:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 13:09:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 305 transitions. [2025-02-06 13:09:54,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4099462365591398 [2025-02-06 13:09:54,168 INFO L175 Difference]: Start difference. First operand has 205 places, 203 transitions, 2033 flow. Second operand 12 states and 305 transitions. [2025-02-06 13:09:54,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 272 transitions, 3129 flow [2025-02-06 13:09:54,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 272 transitions, 2918 flow, removed 81 selfloop flow, removed 7 redundant places. [2025-02-06 13:09:54,290 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 2090 flow [2025-02-06 13:09:54,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2090, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2025-02-06 13:09:54,291 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 151 predicate places. [2025-02-06 13:09:54,291 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 2090 flow [2025-02-06 13:09:54,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:54,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:54,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:54,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-02-06 13:09:54,292 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:54,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:54,292 INFO L85 PathProgramCache]: Analyzing trace with hash -116903688, now seen corresponding path program 19 times [2025-02-06 13:09:54,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:54,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439512883] [2025-02-06 13:09:54,292 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:09:54,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:54,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 13:09:54,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:54,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:09:54,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:54,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:54,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439512883] [2025-02-06 13:09:54,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439512883] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:54,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:54,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773717899] [2025-02-06 13:09:54,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:54,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:54,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:54,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:54,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:54,630 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:54,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 2090 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:54,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:54,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:54,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:55,358 INFO L124 PetriNetUnfolderBase]: 3180/5723 cut-off events. [2025-02-06 13:09:55,359 INFO L125 PetriNetUnfolderBase]: For 79908/79990 co-relation queries the response was YES. [2025-02-06 13:09:55,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26041 conditions, 5723 events. 3180/5723 cut-off events. For 79908/79990 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 40749 event pairs, 1137 based on Foata normal form. 35/5591 useless extension candidates. Maximal degree in co-relation 25926. Up to 4350 conditions per place. [2025-02-06 13:09:55,400 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 210 selfloop transitions, 51 changer transitions 4/272 dead transitions. [2025-02-06 13:09:55,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 272 transitions, 3060 flow [2025-02-06 13:09:55,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 13:09:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 13:09:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 302 transitions. [2025-02-06 13:09:55,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2025-02-06 13:09:55,406 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 2090 flow. Second operand 12 states and 302 transitions. [2025-02-06 13:09:55,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 272 transitions, 3060 flow [2025-02-06 13:09:55,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 272 transitions, 2891 flow, removed 60 selfloop flow, removed 7 redundant places. [2025-02-06 13:09:55,546 INFO L231 Difference]: Finished difference. Result has 218 places, 213 transitions, 2101 flow [2025-02-06 13:09:55,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2101, PETRI_PLACES=218, PETRI_TRANSITIONS=213} [2025-02-06 13:09:55,546 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 157 predicate places. [2025-02-06 13:09:55,547 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 213 transitions, 2101 flow [2025-02-06 13:09:55,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:55,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:55,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:55,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-02-06 13:09:55,547 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:55,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1252581408, now seen corresponding path program 20 times [2025-02-06 13:09:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:55,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117634663] [2025-02-06 13:09:55,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:09:55,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:55,553 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:09:55,565 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:55,565 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:09:55,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:55,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:55,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117634663] [2025-02-06 13:09:55,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117634663] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:55,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713083596] [2025-02-06 13:09:55,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:55,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:55,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:55,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:55,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:55,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 213 transitions, 2101 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:55,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:55,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:55,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:56,750 INFO L124 PetriNetUnfolderBase]: 3407/6116 cut-off events. [2025-02-06 13:09:56,750 INFO L125 PetriNetUnfolderBase]: For 93437/93687 co-relation queries the response was YES. [2025-02-06 13:09:56,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28891 conditions, 6116 events. 3407/6116 cut-off events. For 93437/93687 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 43842 event pairs, 1380 based on Foata normal form. 41/5963 useless extension candidates. Maximal degree in co-relation 28773. Up to 4799 conditions per place. [2025-02-06 13:09:56,797 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 240 selfloop transitions, 39 changer transitions 3/289 dead transitions. [2025-02-06 13:09:56,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 289 transitions, 3442 flow [2025-02-06 13:09:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 293 transitions. [2025-02-06 13:09:56,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42961876832844575 [2025-02-06 13:09:56,799 INFO L175 Difference]: Start difference. First operand has 218 places, 213 transitions, 2101 flow. Second operand 11 states and 293 transitions. [2025-02-06 13:09:56,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 289 transitions, 3442 flow [2025-02-06 13:09:56,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 289 transitions, 3284 flow, removed 29 selfloop flow, removed 9 redundant places. [2025-02-06 13:09:56,947 INFO L231 Difference]: Finished difference. Result has 224 places, 225 transitions, 2367 flow [2025-02-06 13:09:56,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2367, PETRI_PLACES=224, PETRI_TRANSITIONS=225} [2025-02-06 13:09:56,947 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 163 predicate places. [2025-02-06 13:09:56,947 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 225 transitions, 2367 flow [2025-02-06 13:09:56,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:56,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:56,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:56,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-02-06 13:09:56,948 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:56,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:56,948 INFO L85 PathProgramCache]: Analyzing trace with hash -782468122, now seen corresponding path program 21 times [2025-02-06 13:09:56,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:56,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28837400] [2025-02-06 13:09:56,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:09:56,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:56,954 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:56,962 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 35 statements. [2025-02-06 13:09:56,962 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:09:56,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:57,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:57,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28837400] [2025-02-06 13:09:57,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28837400] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:57,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:57,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:57,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949458797] [2025-02-06 13:09:57,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:57,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:57,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:57,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:57,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:57,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:09:57,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 225 transitions, 2367 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:57,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:57,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:09:57,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:57,979 INFO L124 PetriNetUnfolderBase]: 3468/6225 cut-off events. [2025-02-06 13:09:57,979 INFO L125 PetriNetUnfolderBase]: For 105810/106138 co-relation queries the response was YES. [2025-02-06 13:09:58,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29889 conditions, 6225 events. 3468/6225 cut-off events. For 105810/106138 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 44822 event pairs, 1495 based on Foata normal form. 55/6081 useless extension candidates. Maximal degree in co-relation 29766. Up to 5069 conditions per place. [2025-02-06 13:09:58,026 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 230 selfloop transitions, 36 changer transitions 4/277 dead transitions. [2025-02-06 13:09:58,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 277 transitions, 3351 flow [2025-02-06 13:09:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2025-02-06 13:09:58,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2025-02-06 13:09:58,028 INFO L175 Difference]: Start difference. First operand has 224 places, 225 transitions, 2367 flow. Second operand 11 states and 272 transitions. [2025-02-06 13:09:58,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 277 transitions, 3351 flow [2025-02-06 13:09:58,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 277 transitions, 3105 flow, removed 107 selfloop flow, removed 4 redundant places. [2025-02-06 13:09:58,171 INFO L231 Difference]: Finished difference. Result has 233 places, 231 transitions, 2352 flow [2025-02-06 13:09:58,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2352, PETRI_PLACES=233, PETRI_TRANSITIONS=231} [2025-02-06 13:09:58,172 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 172 predicate places. [2025-02-06 13:09:58,172 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 231 transitions, 2352 flow [2025-02-06 13:09:58,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:58,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:58,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:58,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-02-06 13:09:58,172 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:58,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1548180046, now seen corresponding path program 22 times [2025-02-06 13:09:58,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:58,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364375671] [2025-02-06 13:09:58,173 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:09:58,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:58,178 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:09:58,185 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:58,185 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:09:58,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:09:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:09:58,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:09:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364375671] [2025-02-06 13:09:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364375671] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:09:58,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:09:58,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:09:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300713414] [2025-02-06 13:09:58,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:09:58,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:09:58,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:09:58,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:09:58,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:09:58,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:09:58,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 231 transitions, 2352 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:58,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:09:58,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:09:58,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:09:59,607 INFO L124 PetriNetUnfolderBase]: 3823/6799 cut-off events. [2025-02-06 13:09:59,608 INFO L125 PetriNetUnfolderBase]: For 100553/100753 co-relation queries the response was YES. [2025-02-06 13:09:59,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31797 conditions, 6799 events. 3823/6799 cut-off events. For 100553/100753 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 49356 event pairs, 1590 based on Foata normal form. 61/6645 useless extension candidates. Maximal degree in co-relation 31669. Up to 5338 conditions per place. [2025-02-06 13:09:59,653 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 250 selfloop transitions, 44 changer transitions 3/303 dead transitions. [2025-02-06 13:09:59,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 303 transitions, 3656 flow [2025-02-06 13:09:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:09:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:09:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2025-02-06 13:09:59,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4149560117302053 [2025-02-06 13:09:59,658 INFO L175 Difference]: Start difference. First operand has 233 places, 231 transitions, 2352 flow. Second operand 11 states and 283 transitions. [2025-02-06 13:09:59,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 303 transitions, 3656 flow [2025-02-06 13:09:59,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 303 transitions, 3506 flow, removed 55 selfloop flow, removed 6 redundant places. [2025-02-06 13:09:59,845 INFO L231 Difference]: Finished difference. Result has 241 places, 240 transitions, 2610 flow [2025-02-06 13:09:59,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2202, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2610, PETRI_PLACES=241, PETRI_TRANSITIONS=240} [2025-02-06 13:09:59,845 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 180 predicate places. [2025-02-06 13:09:59,845 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 240 transitions, 2610 flow [2025-02-06 13:09:59,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:09:59,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:09:59,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:09:59,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-02-06 13:09:59,846 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:09:59,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:09:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1954578298, now seen corresponding path program 23 times [2025-02-06 13:09:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:09:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209337553] [2025-02-06 13:09:59,846 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:09:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:09:59,855 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:09:59,866 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:09:59,870 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 13:09:59,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:00,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:00,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209337553] [2025-02-06 13:10:00,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209337553] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:00,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:00,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:00,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556626330] [2025-02-06 13:10:00,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:00,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:00,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:00,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:00,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:00,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:00,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 240 transitions, 2610 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:00,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:00,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:00,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:01,241 INFO L124 PetriNetUnfolderBase]: 3738/6721 cut-off events. [2025-02-06 13:10:01,241 INFO L125 PetriNetUnfolderBase]: For 116888/117094 co-relation queries the response was YES. [2025-02-06 13:10:01,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32697 conditions, 6721 events. 3738/6721 cut-off events. For 116888/117094 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 49443 event pairs, 1615 based on Foata normal form. 51/6551 useless extension candidates. Maximal degree in co-relation 32564. Up to 5434 conditions per place. [2025-02-06 13:10:01,288 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 259 selfloop transitions, 35 changer transitions 3/304 dead transitions. [2025-02-06 13:10:01,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 304 transitions, 3924 flow [2025-02-06 13:10:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2025-02-06 13:10:01,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2025-02-06 13:10:01,290 INFO L175 Difference]: Start difference. First operand has 241 places, 240 transitions, 2610 flow. Second operand 11 states and 282 transitions. [2025-02-06 13:10:01,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 304 transitions, 3924 flow [2025-02-06 13:10:01,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 304 transitions, 3682 flow, removed 102 selfloop flow, removed 5 redundant places. [2025-02-06 13:10:01,501 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 2706 flow [2025-02-06 13:10:01,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2706, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2025-02-06 13:10:01,502 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 189 predicate places. [2025-02-06 13:10:01,502 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 2706 flow [2025-02-06 13:10:01,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:01,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:01,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:01,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-02-06 13:10:01,503 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:01,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1156108770, now seen corresponding path program 24 times [2025-02-06 13:10:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:01,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804660131] [2025-02-06 13:10:01,503 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:10:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:01,508 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:10:01,517 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:01,517 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:10:01,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:01,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:01,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804660131] [2025-02-06 13:10:01,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804660131] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:01,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751560620] [2025-02-06 13:10:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:01,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:01,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:01,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:01,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:01,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:01,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 2706 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:01,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:01,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:01,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:03,008 INFO L124 PetriNetUnfolderBase]: 3864/6974 cut-off events. [2025-02-06 13:10:03,008 INFO L125 PetriNetUnfolderBase]: For 132061/132275 co-relation queries the response was YES. [2025-02-06 13:10:03,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33994 conditions, 6974 events. 3864/6974 cut-off events. For 132061/132275 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 52023 event pairs, 1683 based on Foata normal form. 53/6800 useless extension candidates. Maximal degree in co-relation 33855. Up to 5615 conditions per place. [2025-02-06 13:10:03,066 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 269 selfloop transitions, 37 changer transitions 3/316 dead transitions. [2025-02-06 13:10:03,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 316 transitions, 4032 flow [2025-02-06 13:10:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2025-02-06 13:10:03,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4178885630498534 [2025-02-06 13:10:03,068 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 2706 flow. Second operand 11 states and 285 transitions. [2025-02-06 13:10:03,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 316 transitions, 4032 flow [2025-02-06 13:10:03,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 316 transitions, 3804 flow, removed 97 selfloop flow, removed 5 redundant places. [2025-02-06 13:10:03,338 INFO L231 Difference]: Finished difference. Result has 259 places, 255 transitions, 2813 flow [2025-02-06 13:10:03,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2813, PETRI_PLACES=259, PETRI_TRANSITIONS=255} [2025-02-06 13:10:03,339 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 198 predicate places. [2025-02-06 13:10:03,339 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 255 transitions, 2813 flow [2025-02-06 13:10:03,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:03,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:03,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:03,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-02-06 13:10:03,340 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:03,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash -653030636, now seen corresponding path program 25 times [2025-02-06 13:10:03,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:03,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848976432] [2025-02-06 13:10:03,340 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:10:03,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:03,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 13:10:03,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:03,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:03,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:03,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:03,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848976432] [2025-02-06 13:10:03,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848976432] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:03,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:03,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36388092] [2025-02-06 13:10:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:03,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:03,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:03,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:03,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:03,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:03,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 255 transitions, 2813 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:03,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:03,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:03,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:04,761 INFO L124 PetriNetUnfolderBase]: 3864/6963 cut-off events. [2025-02-06 13:10:04,762 INFO L125 PetriNetUnfolderBase]: For 131250/131462 co-relation queries the response was YES. [2025-02-06 13:10:04,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33813 conditions, 6963 events. 3864/6963 cut-off events. For 131250/131462 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 51813 event pairs, 1717 based on Foata normal form. 59/6791 useless extension candidates. Maximal degree in co-relation 33669. Up to 5723 conditions per place. [2025-02-06 13:10:04,821 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 263 selfloop transitions, 34 changer transitions 3/307 dead transitions. [2025-02-06 13:10:04,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 307 transitions, 3872 flow [2025-02-06 13:10:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2025-02-06 13:10:04,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4002932551319648 [2025-02-06 13:10:04,822 INFO L175 Difference]: Start difference. First operand has 259 places, 255 transitions, 2813 flow. Second operand 11 states and 273 transitions. [2025-02-06 13:10:04,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 307 transitions, 3872 flow [2025-02-06 13:10:05,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 307 transitions, 3688 flow, removed 80 selfloop flow, removed 5 redundant places. [2025-02-06 13:10:05,022 INFO L231 Difference]: Finished difference. Result has 266 places, 258 transitions, 2762 flow [2025-02-06 13:10:05,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2762, PETRI_PLACES=266, PETRI_TRANSITIONS=258} [2025-02-06 13:10:05,024 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 205 predicate places. [2025-02-06 13:10:05,024 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 258 transitions, 2762 flow [2025-02-06 13:10:05,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:05,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:05,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:05,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-02-06 13:10:05,024 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:05,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:05,025 INFO L85 PathProgramCache]: Analyzing trace with hash -783303342, now seen corresponding path program 26 times [2025-02-06 13:10:05,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:05,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783070649] [2025-02-06 13:10:05,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:05,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:05,036 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:10:05,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:05,051 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:05,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:05,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:05,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783070649] [2025-02-06 13:10:05,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783070649] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:05,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:05,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380823386] [2025-02-06 13:10:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:05,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:05,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:05,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:05,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:05,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 258 transitions, 2762 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:05,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:05,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:05,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:06,427 INFO L124 PetriNetUnfolderBase]: 3960/7140 cut-off events. [2025-02-06 13:10:06,428 INFO L125 PetriNetUnfolderBase]: For 137826/138020 co-relation queries the response was YES. [2025-02-06 13:10:06,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34861 conditions, 7140 events. 3960/7140 cut-off events. For 137826/138020 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 53799 event pairs, 1755 based on Foata normal form. 48/6951 useless extension candidates. Maximal degree in co-relation 34714. Up to 5806 conditions per place. [2025-02-06 13:10:06,492 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 274 selfloop transitions, 36 changer transitions 3/320 dead transitions. [2025-02-06 13:10:06,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 320 transitions, 4057 flow [2025-02-06 13:10:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:06,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:06,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2025-02-06 13:10:06,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2025-02-06 13:10:06,493 INFO L175 Difference]: Start difference. First operand has 266 places, 258 transitions, 2762 flow. Second operand 11 states and 282 transitions. [2025-02-06 13:10:06,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 320 transitions, 4057 flow [2025-02-06 13:10:06,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 320 transitions, 3929 flow, removed 32 selfloop flow, removed 8 redundant places. [2025-02-06 13:10:06,741 INFO L231 Difference]: Finished difference. Result has 271 places, 264 transitions, 2913 flow [2025-02-06 13:10:06,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2913, PETRI_PLACES=271, PETRI_TRANSITIONS=264} [2025-02-06 13:10:06,742 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 210 predicate places. [2025-02-06 13:10:06,742 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 264 transitions, 2913 flow [2025-02-06 13:10:06,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:06,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:06,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:06,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-02-06 13:10:06,742 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:06,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:06,743 INFO L85 PathProgramCache]: Analyzing trace with hash 770928802, now seen corresponding path program 27 times [2025-02-06 13:10:06,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:06,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434297073] [2025-02-06 13:10:06,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:10:06,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:06,748 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:10:06,755 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 35 statements. [2025-02-06 13:10:06,755 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:10:06,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434297073] [2025-02-06 13:10:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434297073] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:06,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:06,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666509648] [2025-02-06 13:10:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:06,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:06,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:06,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:07,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:07,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 264 transitions, 2913 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:07,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:07,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:07,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:08,022 INFO L124 PetriNetUnfolderBase]: 3960/7138 cut-off events. [2025-02-06 13:10:08,022 INFO L125 PetriNetUnfolderBase]: For 146880/147096 co-relation queries the response was YES. [2025-02-06 13:10:08,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35241 conditions, 7138 events. 3960/7138 cut-off events. For 146880/147096 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 53746 event pairs, 1744 based on Foata normal form. 78/6983 useless extension candidates. Maximal degree in co-relation 35091. Up to 5724 conditions per place. [2025-02-06 13:10:08,083 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 275 selfloop transitions, 41 changer transitions 5/328 dead transitions. [2025-02-06 13:10:08,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 328 transitions, 4067 flow [2025-02-06 13:10:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2025-02-06 13:10:08,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42668621700879766 [2025-02-06 13:10:08,084 INFO L175 Difference]: Start difference. First operand has 271 places, 264 transitions, 2913 flow. Second operand 11 states and 291 transitions. [2025-02-06 13:10:08,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 328 transitions, 4067 flow [2025-02-06 13:10:08,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 328 transitions, 3863 flow, removed 83 selfloop flow, removed 6 redundant places. [2025-02-06 13:10:08,315 INFO L231 Difference]: Finished difference. Result has 277 places, 268 transitions, 2864 flow [2025-02-06 13:10:08,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2864, PETRI_PLACES=277, PETRI_TRANSITIONS=268} [2025-02-06 13:10:08,315 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 216 predicate places. [2025-02-06 13:10:08,315 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 268 transitions, 2864 flow [2025-02-06 13:10:08,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:08,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:08,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:08,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-02-06 13:10:08,316 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:08,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash -199868588, now seen corresponding path program 28 times [2025-02-06 13:10:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:08,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411546357] [2025-02-06 13:10:08,317 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:10:08,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:08,322 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:10:08,329 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:08,329 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:10:08,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:08,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:08,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411546357] [2025-02-06 13:10:08,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411546357] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:08,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:08,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:08,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913450309] [2025-02-06 13:10:08,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:08,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:08,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:08,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:08,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:08,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:10:08,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 268 transitions, 2864 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:08,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:08,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:10:08,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:09,746 INFO L124 PetriNetUnfolderBase]: 4158/7443 cut-off events. [2025-02-06 13:10:09,746 INFO L125 PetriNetUnfolderBase]: For 146336/146552 co-relation queries the response was YES. [2025-02-06 13:10:09,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36207 conditions, 7443 events. 4158/7443 cut-off events. For 146336/146552 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 56018 event pairs, 1787 based on Foata normal form. 70/7266 useless extension candidates. Maximal degree in co-relation 36054. Up to 5896 conditions per place. [2025-02-06 13:10:09,798 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 275 selfloop transitions, 46 changer transitions 5/332 dead transitions. [2025-02-06 13:10:09,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 332 transitions, 3976 flow [2025-02-06 13:10:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2025-02-06 13:10:09,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2025-02-06 13:10:09,799 INFO L175 Difference]: Start difference. First operand has 277 places, 268 transitions, 2864 flow. Second operand 11 states and 282 transitions. [2025-02-06 13:10:09,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 332 transitions, 3976 flow [2025-02-06 13:10:10,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 332 transitions, 3841 flow, removed 32 selfloop flow, removed 7 redundant places. [2025-02-06 13:10:10,125 INFO L231 Difference]: Finished difference. Result has 282 places, 272 transitions, 2905 flow [2025-02-06 13:10:10,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2729, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2905, PETRI_PLACES=282, PETRI_TRANSITIONS=272} [2025-02-06 13:10:10,126 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 221 predicate places. [2025-02-06 13:10:10,126 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 272 transitions, 2905 flow [2025-02-06 13:10:10,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:10,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:10,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:10,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-02-06 13:10:10,127 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:10,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1153346216, now seen corresponding path program 29 times [2025-02-06 13:10:10,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:10,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439746072] [2025-02-06 13:10:10,127 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:10:10,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:10,132 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:10:10,146 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:10,146 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 13:10:10,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:10,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:10,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439746072] [2025-02-06 13:10:10,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439746072] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:10,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:10,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:10,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230915655] [2025-02-06 13:10:10,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:10,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:10,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:10,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:10,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:10,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:10,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 272 transitions, 2905 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:10,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:10,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:10,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:11,569 INFO L124 PetriNetUnfolderBase]: 3996/7213 cut-off events. [2025-02-06 13:10:11,570 INFO L125 PetriNetUnfolderBase]: For 137600/137816 co-relation queries the response was YES. [2025-02-06 13:10:11,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34823 conditions, 7213 events. 3996/7213 cut-off events. For 137600/137816 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 54596 event pairs, 1808 based on Foata normal form. 70/7034 useless extension candidates. Maximal degree in co-relation 34667. Up to 5974 conditions per place. [2025-02-06 13:10:11,634 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 274 selfloop transitions, 37 changer transitions 3/321 dead transitions. [2025-02-06 13:10:11,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 321 transitions, 3943 flow [2025-02-06 13:10:11,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:11,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2025-02-06 13:10:11,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2025-02-06 13:10:11,636 INFO L175 Difference]: Start difference. First operand has 282 places, 272 transitions, 2905 flow. Second operand 11 states and 272 transitions. [2025-02-06 13:10:11,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 321 transitions, 3943 flow [2025-02-06 13:10:11,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 321 transitions, 3790 flow, removed 37 selfloop flow, removed 7 redundant places. [2025-02-06 13:10:11,953 INFO L231 Difference]: Finished difference. Result has 287 places, 275 transitions, 2900 flow [2025-02-06 13:10:11,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2900, PETRI_PLACES=287, PETRI_TRANSITIONS=275} [2025-02-06 13:10:11,953 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 226 predicate places. [2025-02-06 13:10:11,953 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 275 transitions, 2900 flow [2025-02-06 13:10:11,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:11,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:11,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:11,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-02-06 13:10:11,954 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:11,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2124391288, now seen corresponding path program 30 times [2025-02-06 13:10:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:11,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125326448] [2025-02-06 13:10:11,954 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:10:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:11,963 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:10:11,971 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:11,971 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:10:11,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:12,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:12,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125326448] [2025-02-06 13:10:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125326448] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:12,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:12,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:12,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348439255] [2025-02-06 13:10:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:12,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:12,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:12,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:12,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:12,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:12,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 275 transitions, 2900 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:12,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:12,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:12,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:13,202 INFO L124 PetriNetUnfolderBase]: 3996/7215 cut-off events. [2025-02-06 13:10:13,202 INFO L125 PetriNetUnfolderBase]: For 135150/135366 co-relation queries the response was YES. [2025-02-06 13:10:13,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34555 conditions, 7215 events. 3996/7215 cut-off events. For 135150/135366 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 54625 event pairs, 1839 based on Foata normal form. 62/7034 useless extension candidates. Maximal degree in co-relation 34396. Up to 5987 conditions per place. [2025-02-06 13:10:13,267 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 276 selfloop transitions, 35 changer transitions 3/321 dead transitions. [2025-02-06 13:10:13,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 321 transitions, 3888 flow [2025-02-06 13:10:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2025-02-06 13:10:13,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2025-02-06 13:10:13,269 INFO L175 Difference]: Start difference. First operand has 287 places, 275 transitions, 2900 flow. Second operand 11 states and 269 transitions. [2025-02-06 13:10:13,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 321 transitions, 3888 flow [2025-02-06 13:10:13,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 321 transitions, 3760 flow, removed 28 selfloop flow, removed 8 redundant places. [2025-02-06 13:10:13,588 INFO L231 Difference]: Finished difference. Result has 291 places, 277 transitions, 2868 flow [2025-02-06 13:10:13,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2868, PETRI_PLACES=291, PETRI_TRANSITIONS=277} [2025-02-06 13:10:13,589 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 230 predicate places. [2025-02-06 13:10:13,589 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 277 transitions, 2868 flow [2025-02-06 13:10:13,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:13,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:13,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:13,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2025-02-06 13:10:13,590 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:13,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:13,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1594022480, now seen corresponding path program 31 times [2025-02-06 13:10:13,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:13,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310845558] [2025-02-06 13:10:13,591 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:10:13,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:13,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 13:10:13,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:13,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:13,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:13,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:13,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310845558] [2025-02-06 13:10:13,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310845558] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:13,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:13,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:13,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089400634] [2025-02-06 13:10:13,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:13,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:13,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:13,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:13,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:13,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:13,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 277 transitions, 2868 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:13,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:13,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:13,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:15,025 INFO L124 PetriNetUnfolderBase]: 4127/7476 cut-off events. [2025-02-06 13:10:15,026 INFO L125 PetriNetUnfolderBase]: For 152058/152302 co-relation queries the response was YES. [2025-02-06 13:10:15,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36539 conditions, 7476 events. 4127/7476 cut-off events. For 152058/152302 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 57073 event pairs, 1849 based on Foata normal form. 54/7280 useless extension candidates. Maximal degree in co-relation 36378. Up to 6100 conditions per place. [2025-02-06 13:10:15,099 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 292 selfloop transitions, 35 changer transitions 3/337 dead transitions. [2025-02-06 13:10:15,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 337 transitions, 4389 flow [2025-02-06 13:10:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2025-02-06 13:10:15,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-02-06 13:10:15,101 INFO L175 Difference]: Start difference. First operand has 291 places, 277 transitions, 2868 flow. Second operand 11 states and 279 transitions. [2025-02-06 13:10:15,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 337 transitions, 4389 flow [2025-02-06 13:10:15,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 337 transitions, 4321 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-02-06 13:10:15,447 INFO L231 Difference]: Finished difference. Result has 297 places, 286 transitions, 3289 flow [2025-02-06 13:10:15,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3289, PETRI_PLACES=297, PETRI_TRANSITIONS=286} [2025-02-06 13:10:15,448 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 236 predicate places. [2025-02-06 13:10:15,448 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 286 transitions, 3289 flow [2025-02-06 13:10:15,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:15,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:15,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:15,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-02-06 13:10:15,448 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:15,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1143557246, now seen corresponding path program 32 times [2025-02-06 13:10:15,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:15,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15139490] [2025-02-06 13:10:15,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:15,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:15,454 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:10:15,461 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:15,461 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:15,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:15,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:15,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15139490] [2025-02-06 13:10:15,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15139490] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:15,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:15,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:15,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920296806] [2025-02-06 13:10:15,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:15,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:15,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:15,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:15,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:15,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:15,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 286 transitions, 3289 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:15,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:15,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:15,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:17,269 INFO L124 PetriNetUnfolderBase]: 4310/7781 cut-off events. [2025-02-06 13:10:17,270 INFO L125 PetriNetUnfolderBase]: For 209320/209756 co-relation queries the response was YES. [2025-02-06 13:10:17,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40676 conditions, 7781 events. 4310/7781 cut-off events. For 209320/209756 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 59902 event pairs, 1896 based on Foata normal form. 54/7573 useless extension candidates. Maximal degree in co-relation 40511. Up to 6289 conditions per place. [2025-02-06 13:10:17,401 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 310 selfloop transitions, 38 changer transitions 3/358 dead transitions. [2025-02-06 13:10:17,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 358 transitions, 4934 flow [2025-02-06 13:10:17,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2025-02-06 13:10:17,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2025-02-06 13:10:17,403 INFO L175 Difference]: Start difference. First operand has 297 places, 286 transitions, 3289 flow. Second operand 11 states and 292 transitions. [2025-02-06 13:10:17,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 358 transitions, 4934 flow [2025-02-06 13:10:17,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 358 transitions, 4590 flow, removed 156 selfloop flow, removed 5 redundant places. [2025-02-06 13:10:17,829 INFO L231 Difference]: Finished difference. Result has 307 places, 297 transitions, 3465 flow [2025-02-06 13:10:17,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3465, PETRI_PLACES=307, PETRI_TRANSITIONS=297} [2025-02-06 13:10:17,830 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 246 predicate places. [2025-02-06 13:10:17,830 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 297 transitions, 3465 flow [2025-02-06 13:10:17,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:17,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:17,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:17,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2025-02-06 13:10:17,830 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:17,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1908301616, now seen corresponding path program 33 times [2025-02-06 13:10:17,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:17,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125220015] [2025-02-06 13:10:17,831 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:10:17,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:17,836 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:10:17,843 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 35 statements. [2025-02-06 13:10:17,843 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:10:17,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:18,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125220015] [2025-02-06 13:10:18,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125220015] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:18,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:18,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138703699] [2025-02-06 13:10:18,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:18,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:18,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:18,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:18,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:18,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:18,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 297 transitions, 3465 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:18,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:18,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:18,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:19,569 INFO L124 PetriNetUnfolderBase]: 4371/7891 cut-off events. [2025-02-06 13:10:19,570 INFO L125 PetriNetUnfolderBase]: For 221464/221938 co-relation queries the response was YES. [2025-02-06 13:10:19,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41099 conditions, 7891 events. 4371/7891 cut-off events. For 221464/221938 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 60926 event pairs, 2004 based on Foata normal form. 68/7693 useless extension candidates. Maximal degree in co-relation 40928. Up to 6559 conditions per place. [2025-02-06 13:10:19,658 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 300 selfloop transitions, 35 changer transitions 4/346 dead transitions. [2025-02-06 13:10:19,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 346 transitions, 4637 flow [2025-02-06 13:10:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2025-02-06 13:10:19,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2025-02-06 13:10:19,660 INFO L175 Difference]: Start difference. First operand has 307 places, 297 transitions, 3465 flow. Second operand 11 states and 271 transitions. [2025-02-06 13:10:19,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 346 transitions, 4637 flow [2025-02-06 13:10:20,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 346 transitions, 4329 flow, removed 139 selfloop flow, removed 4 redundant places. [2025-02-06 13:10:20,066 INFO L231 Difference]: Finished difference. Result has 316 places, 303 transitions, 3418 flow [2025-02-06 13:10:20,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3418, PETRI_PLACES=316, PETRI_TRANSITIONS=303} [2025-02-06 13:10:20,067 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 255 predicate places. [2025-02-06 13:10:20,067 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 303 transitions, 3418 flow [2025-02-06 13:10:20,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:20,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:20,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:20,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2025-02-06 13:10:20,067 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:20,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:20,068 INFO L85 PathProgramCache]: Analyzing trace with hash 496212484, now seen corresponding path program 34 times [2025-02-06 13:10:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:20,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770405668] [2025-02-06 13:10:20,068 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:10:20,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:20,075 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:10:20,085 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:20,085 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:10:20,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:20,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:20,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770405668] [2025-02-06 13:10:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770405668] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:20,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:20,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:20,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753661785] [2025-02-06 13:10:20,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:20,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:20,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:20,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:20,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:10:20,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 303 transitions, 3418 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:20,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:20,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:10:20,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:21,968 INFO L124 PetriNetUnfolderBase]: 4741/8473 cut-off events. [2025-02-06 13:10:21,968 INFO L125 PetriNetUnfolderBase]: For 230644/230912 co-relation queries the response was YES. [2025-02-06 13:10:22,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43883 conditions, 8473 events. 4741/8473 cut-off events. For 230644/230912 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 65458 event pairs, 2132 based on Foata normal form. 74/8272 useless extension candidates. Maximal degree in co-relation 43707. Up to 6828 conditions per place. [2025-02-06 13:10:22,046 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 321 selfloop transitions, 43 changer transitions 3/373 dead transitions. [2025-02-06 13:10:22,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 373 transitions, 5054 flow [2025-02-06 13:10:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:22,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2025-02-06 13:10:22,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4149560117302053 [2025-02-06 13:10:22,047 INFO L175 Difference]: Start difference. First operand has 316 places, 303 transitions, 3418 flow. Second operand 11 states and 283 transitions. [2025-02-06 13:10:22,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 373 transitions, 5054 flow [2025-02-06 13:10:22,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 373 transitions, 4832 flow, removed 92 selfloop flow, removed 6 redundant places. [2025-02-06 13:10:22,400 INFO L231 Difference]: Finished difference. Result has 324 places, 312 transitions, 3728 flow [2025-02-06 13:10:22,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3196, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3728, PETRI_PLACES=324, PETRI_TRANSITIONS=312} [2025-02-06 13:10:22,401 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 263 predicate places. [2025-02-06 13:10:22,401 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 312 transitions, 3728 flow [2025-02-06 13:10:22,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:22,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:22,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:22,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2025-02-06 13:10:22,402 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:22,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1041084714, now seen corresponding path program 35 times [2025-02-06 13:10:22,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16424824] [2025-02-06 13:10:22,403 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:10:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:22,407 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:10:22,415 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:22,415 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 13:10:22,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:22,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:22,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16424824] [2025-02-06 13:10:22,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16424824] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:22,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:22,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:22,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704404200] [2025-02-06 13:10:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:22,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:22,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:22,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:22,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:22,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:22,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 312 transitions, 3728 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:22,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:22,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:22,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:24,476 INFO L124 PetriNetUnfolderBase]: 4606/8296 cut-off events. [2025-02-06 13:10:24,476 INFO L125 PetriNetUnfolderBase]: For 254168/254442 co-relation queries the response was YES. [2025-02-06 13:10:24,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44175 conditions, 8296 events. 4606/8296 cut-off events. For 254168/254442 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 64861 event pairs, 2128 based on Foata normal form. 63/8088 useless extension candidates. Maximal degree in co-relation 43994. Up to 6850 conditions per place. [2025-02-06 13:10:24,541 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 327 selfloop transitions, 34 changer transitions 3/371 dead transitions. [2025-02-06 13:10:24,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 371 transitions, 5193 flow [2025-02-06 13:10:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2025-02-06 13:10:24,542 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2025-02-06 13:10:24,542 INFO L175 Difference]: Start difference. First operand has 324 places, 312 transitions, 3728 flow. Second operand 11 states and 281 transitions. [2025-02-06 13:10:24,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 371 transitions, 5193 flow [2025-02-06 13:10:25,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 371 transitions, 4857 flow, removed 150 selfloop flow, removed 5 redundant places. [2025-02-06 13:10:25,075 INFO L231 Difference]: Finished difference. Result has 332 places, 317 transitions, 3708 flow [2025-02-06 13:10:25,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3396, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3708, PETRI_PLACES=332, PETRI_TRANSITIONS=317} [2025-02-06 13:10:25,076 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 271 predicate places. [2025-02-06 13:10:25,076 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 317 transitions, 3708 flow [2025-02-06 13:10:25,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:25,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:25,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:25,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2025-02-06 13:10:25,077 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:25,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:25,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1000002818, now seen corresponding path program 36 times [2025-02-06 13:10:25,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:25,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825914070] [2025-02-06 13:10:25,078 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:10:25,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:25,083 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:10:25,091 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:25,091 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:10:25,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:25,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825914070] [2025-02-06 13:10:25,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825914070] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:25,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:25,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:25,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149345467] [2025-02-06 13:10:25,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:25,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:25,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:25,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:25,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:25,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:25,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 317 transitions, 3708 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:25,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:25,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:25,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:27,186 INFO L124 PetriNetUnfolderBase]: 4627/8322 cut-off events. [2025-02-06 13:10:27,187 INFO L125 PetriNetUnfolderBase]: For 243256/243528 co-relation queries the response was YES. [2025-02-06 13:10:27,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43256 conditions, 8322 events. 4627/8322 cut-off events. For 243256/243528 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 65075 event pairs, 2151 based on Foata normal form. 73/8120 useless extension candidates. Maximal degree in co-relation 43070. Up to 6846 conditions per place. [2025-02-06 13:10:27,285 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 328 selfloop transitions, 37 changer transitions 4/376 dead transitions. [2025-02-06 13:10:27,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 376 transitions, 5030 flow [2025-02-06 13:10:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2025-02-06 13:10:27,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2025-02-06 13:10:27,287 INFO L175 Difference]: Start difference. First operand has 332 places, 317 transitions, 3708 flow. Second operand 11 states and 284 transitions. [2025-02-06 13:10:27,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 376 transitions, 5030 flow [2025-02-06 13:10:27,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 376 transitions, 4781 flow, removed 107 selfloop flow, removed 6 redundant places. [2025-02-06 13:10:27,887 INFO L231 Difference]: Finished difference. Result has 339 places, 322 transitions, 3695 flow [2025-02-06 13:10:27,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3695, PETRI_PLACES=339, PETRI_TRANSITIONS=322} [2025-02-06 13:10:27,889 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 278 predicate places. [2025-02-06 13:10:27,889 INFO L471 AbstractCegarLoop]: Abstraction has has 339 places, 322 transitions, 3695 flow [2025-02-06 13:10:27,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:27,889 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:27,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:27,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2025-02-06 13:10:27,890 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:27,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1215998082, now seen corresponding path program 37 times [2025-02-06 13:10:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:27,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852646469] [2025-02-06 13:10:27,893 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:10:27,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:27,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 13:10:27,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:27,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:27,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:28,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:28,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852646469] [2025-02-06 13:10:28,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852646469] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:28,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:28,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:28,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114994438] [2025-02-06 13:10:28,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:28,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:28,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:28,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:28,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:28,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:28,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 322 transitions, 3695 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:28,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:28,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:28,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:29,748 INFO L124 PetriNetUnfolderBase]: 4690/8445 cut-off events. [2025-02-06 13:10:29,749 INFO L125 PetriNetUnfolderBase]: For 248038/248286 co-relation queries the response was YES. [2025-02-06 13:10:29,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43936 conditions, 8445 events. 4690/8445 cut-off events. For 248038/248286 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 66190 event pairs, 2216 based on Foata normal form. 58/8232 useless extension candidates. Maximal degree in co-relation 43746. Up to 6976 conditions per place. [2025-02-06 13:10:29,845 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 335 selfloop transitions, 35 changer transitions 3/380 dead transitions. [2025-02-06 13:10:29,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 380 transitions, 5197 flow [2025-02-06 13:10:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:29,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2025-02-06 13:10:29,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4120234604105572 [2025-02-06 13:10:29,846 INFO L175 Difference]: Start difference. First operand has 339 places, 322 transitions, 3695 flow. Second operand 11 states and 281 transitions. [2025-02-06 13:10:29,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 380 transitions, 5197 flow [2025-02-06 13:10:30,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 380 transitions, 5070 flow, removed 32 selfloop flow, removed 7 redundant places. [2025-02-06 13:10:30,298 INFO L231 Difference]: Finished difference. Result has 345 places, 327 transitions, 3898 flow [2025-02-06 13:10:30,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3898, PETRI_PLACES=345, PETRI_TRANSITIONS=327} [2025-02-06 13:10:30,299 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 284 predicate places. [2025-02-06 13:10:30,299 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 327 transitions, 3898 flow [2025-02-06 13:10:30,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:30,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:30,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:30,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2025-02-06 13:10:30,299 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:30,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1092632368, now seen corresponding path program 38 times [2025-02-06 13:10:30,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:30,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410048836] [2025-02-06 13:10:30,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:30,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:30,304 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:10:30,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:30,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:30,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:30,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:30,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410048836] [2025-02-06 13:10:30,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410048836] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:30,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:30,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:30,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866004811] [2025-02-06 13:10:30,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:30,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:30,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:30,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:30,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:30,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:30,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 327 transitions, 3898 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:30,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:30,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:30,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:31,962 INFO L124 PetriNetUnfolderBase]: 4690/8453 cut-off events. [2025-02-06 13:10:31,962 INFO L125 PetriNetUnfolderBase]: For 260570/260842 co-relation queries the response was YES. [2025-02-06 13:10:32,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44261 conditions, 8453 events. 4690/8453 cut-off events. For 260570/260842 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 66329 event pairs, 2181 based on Foata normal form. 88/8269 useless extension candidates. Maximal degree in co-relation 44067. Up to 6894 conditions per place. [2025-02-06 13:10:32,058 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 336 selfloop transitions, 40 changer transitions 5/388 dead transitions. [2025-02-06 13:10:32,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 388 transitions, 5204 flow [2025-02-06 13:10:32,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2025-02-06 13:10:32,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2025-02-06 13:10:32,060 INFO L175 Difference]: Start difference. First operand has 345 places, 327 transitions, 3898 flow. Second operand 11 states and 290 transitions. [2025-02-06 13:10:32,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 388 transitions, 5204 flow [2025-02-06 13:10:32,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 388 transitions, 4936 flow, removed 116 selfloop flow, removed 6 redundant places. [2025-02-06 13:10:32,497 INFO L231 Difference]: Finished difference. Result has 351 places, 331 transitions, 3803 flow [2025-02-06 13:10:32,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3630, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3803, PETRI_PLACES=351, PETRI_TRANSITIONS=331} [2025-02-06 13:10:32,498 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 290 predicate places. [2025-02-06 13:10:32,498 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 331 transitions, 3803 flow [2025-02-06 13:10:32,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:32,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:32,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:32,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2025-02-06 13:10:32,499 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:32,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash 422042014, now seen corresponding path program 39 times [2025-02-06 13:10:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:32,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64856290] [2025-02-06 13:10:32,499 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:10:32,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:32,504 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:10:32,510 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 35 statements. [2025-02-06 13:10:32,511 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:10:32,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:32,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:32,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64856290] [2025-02-06 13:10:32,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64856290] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:32,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:32,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:32,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633485121] [2025-02-06 13:10:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:32,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:32,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:32,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:32,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:32,770 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:32,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 331 transitions, 3803 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:32,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:32,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:32,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:34,153 INFO L124 PetriNetUnfolderBase]: 4690/8451 cut-off events. [2025-02-06 13:10:34,153 INFO L125 PetriNetUnfolderBase]: For 243645/243917 co-relation queries the response was YES. [2025-02-06 13:10:34,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43428 conditions, 8451 events. 4690/8451 cut-off events. For 243645/243917 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 66326 event pairs, 2188 based on Foata normal form. 80/8261 useless extension candidates. Maximal degree in co-relation 43231. Up to 6824 conditions per place. [2025-02-06 13:10:34,246 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 333 selfloop transitions, 45 changer transitions 5/390 dead transitions. [2025-02-06 13:10:34,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 390 transitions, 5039 flow [2025-02-06 13:10:34,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 289 transitions. [2025-02-06 13:10:34,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4237536656891496 [2025-02-06 13:10:34,247 INFO L175 Difference]: Start difference. First operand has 351 places, 331 transitions, 3803 flow. Second operand 11 states and 289 transitions. [2025-02-06 13:10:34,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 390 transitions, 5039 flow [2025-02-06 13:10:34,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 390 transitions, 4874 flow, removed 48 selfloop flow, removed 7 redundant places. [2025-02-06 13:10:34,723 INFO L231 Difference]: Finished difference. Result has 356 places, 335 transitions, 3832 flow [2025-02-06 13:10:34,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3832, PETRI_PLACES=356, PETRI_TRANSITIONS=335} [2025-02-06 13:10:34,724 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 295 predicate places. [2025-02-06 13:10:34,724 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 335 transitions, 3832 flow [2025-02-06 13:10:34,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:34,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:34,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:34,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2025-02-06 13:10:34,725 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:34,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:34,725 INFO L85 PathProgramCache]: Analyzing trace with hash 13145844, now seen corresponding path program 40 times [2025-02-06 13:10:34,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:34,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820050587] [2025-02-06 13:10:34,725 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:10:34,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:34,730 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-02-06 13:10:34,736 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:34,736 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:10:34,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:35,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:35,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820050587] [2025-02-06 13:10:35,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820050587] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:35,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:35,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:35,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869130702] [2025-02-06 13:10:35,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:35,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:35,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:35,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:35,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:35,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2025-02-06 13:10:35,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 335 transitions, 3832 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:35,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:35,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2025-02-06 13:10:35,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:36,414 INFO L124 PetriNetUnfolderBase]: 4945/8870 cut-off events. [2025-02-06 13:10:36,414 INFO L125 PetriNetUnfolderBase]: For 256737/257011 co-relation queries the response was YES. [2025-02-06 13:10:36,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45408 conditions, 8870 events. 4945/8870 cut-off events. For 256737/257011 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 69580 event pairs, 2351 based on Foata normal form. 80/8660 useless extension candidates. Maximal degree in co-relation 45208. Up to 7248 conditions per place. [2025-02-06 13:10:36,513 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 346 selfloop transitions, 40 changer transitions 3/395 dead transitions. [2025-02-06 13:10:36,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 395 transitions, 5215 flow [2025-02-06 13:10:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:36,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2025-02-06 13:10:36,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40615835777126097 [2025-02-06 13:10:36,514 INFO L175 Difference]: Start difference. First operand has 356 places, 335 transitions, 3832 flow. Second operand 11 states and 277 transitions. [2025-02-06 13:10:36,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 395 transitions, 5215 flow [2025-02-06 13:10:37,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 395 transitions, 5032 flow, removed 53 selfloop flow, removed 7 redundant places. [2025-02-06 13:10:37,121 INFO L231 Difference]: Finished difference. Result has 362 places, 340 transitions, 3906 flow [2025-02-06 13:10:37,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3906, PETRI_PLACES=362, PETRI_TRANSITIONS=340} [2025-02-06 13:10:37,122 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 301 predicate places. [2025-02-06 13:10:37,122 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 340 transitions, 3906 flow [2025-02-06 13:10:37,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:37,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:37,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:37,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2025-02-06 13:10:37,122 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:37,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:37,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1496682274, now seen corresponding path program 41 times [2025-02-06 13:10:37,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:37,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611406244] [2025-02-06 13:10:37,123 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:10:37,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:37,128 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 3 equivalence classes. [2025-02-06 13:10:37,134 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 13:10:37,134 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 13:10:37,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:37,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:37,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611406244] [2025-02-06 13:10:37,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611406244] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:37,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:37,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 13:10:37,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48197261] [2025-02-06 13:10:37,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:37,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:10:37,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:37,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:10:37,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:10:37,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:37,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 340 transitions, 3906 flow. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:37,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:37,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:37,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:38,805 INFO L124 PetriNetUnfolderBase]: 4747/8564 cut-off events. [2025-02-06 13:10:38,805 INFO L125 PetriNetUnfolderBase]: For 238872/239144 co-relation queries the response was YES. [2025-02-06 13:10:38,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43440 conditions, 8564 events. 4747/8564 cut-off events. For 238872/239144 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 67606 event pairs, 2290 based on Foata normal form. 72/8354 useless extension candidates. Maximal degree in co-relation 43236. Up to 7191 conditions per place. [2025-02-06 13:10:38,891 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 339 selfloop transitions, 34 changer transitions 3/383 dead transitions. [2025-02-06 13:10:38,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 383 transitions, 5014 flow [2025-02-06 13:10:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:10:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:10:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2025-02-06 13:10:38,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2025-02-06 13:10:38,892 INFO L175 Difference]: Start difference. First operand has 362 places, 340 transitions, 3906 flow. Second operand 11 states and 268 transitions. [2025-02-06 13:10:38,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 383 transitions, 5014 flow [2025-02-06 13:10:39,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 383 transitions, 4843 flow, removed 50 selfloop flow, removed 7 redundant places. [2025-02-06 13:10:39,437 INFO L231 Difference]: Finished difference. Result has 367 places, 342 transitions, 3831 flow [2025-02-06 13:10:39,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3831, PETRI_PLACES=367, PETRI_TRANSITIONS=342} [2025-02-06 13:10:39,438 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 306 predicate places. [2025-02-06 13:10:39,438 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 342 transitions, 3831 flow [2025-02-06 13:10:39,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:39,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:39,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:39,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2025-02-06 13:10:39,439 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:39,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash 525953228, now seen corresponding path program 1 times [2025-02-06 13:10:39,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:39,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725690833] [2025-02-06 13:10:39,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:39,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:39,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 13:10:39,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 13:10:39,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:39,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 13:10:39,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:39,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725690833] [2025-02-06 13:10:39,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725690833] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:39,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319287996] [2025-02-06 13:10:39,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:39,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:39,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:39,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:39,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 13:10:39,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 13:10:39,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 13:10:39,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:39,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:39,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 13:10:39,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 13:10:39,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:10:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 13:10:39,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319287996] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:10:39,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:10:39,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 13:10:39,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995088620] [2025-02-06 13:10:39,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:10:39,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 13:10:39,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:39,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 13:10:39,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-02-06 13:10:39,748 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-06 13:10:39,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 342 transitions, 3831 flow. Second operand has 12 states, 12 states have (on average 21.166666666666668) internal successors, (254), 12 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:39,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:39,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-06 13:10:39,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:41,871 INFO L124 PetriNetUnfolderBase]: 8063/15311 cut-off events. [2025-02-06 13:10:41,871 INFO L125 PetriNetUnfolderBase]: For 544094/544930 co-relation queries the response was YES. [2025-02-06 13:10:42,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79465 conditions, 15311 events. 8063/15311 cut-off events. For 544094/544930 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 139266 event pairs, 4901 based on Foata normal form. 399/15105 useless extension candidates. Maximal degree in co-relation 78927. Up to 6550 conditions per place. [2025-02-06 13:10:42,073 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 563 selfloop transitions, 14 changer transitions 12/635 dead transitions. [2025-02-06 13:10:42,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 635 transitions, 8465 flow [2025-02-06 13:10:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 13:10:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 13:10:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2025-02-06 13:10:42,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2025-02-06 13:10:42,075 INFO L175 Difference]: Start difference. First operand has 367 places, 342 transitions, 3831 flow. Second operand 8 states and 204 transitions. [2025-02-06 13:10:42,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 635 transitions, 8465 flow [2025-02-06 13:10:43,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 635 transitions, 8337 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 13:10:43,090 INFO L231 Difference]: Finished difference. Result has 369 places, 347 transitions, 3839 flow [2025-02-06 13:10:43,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3839, PETRI_PLACES=369, PETRI_TRANSITIONS=347} [2025-02-06 13:10:43,091 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 308 predicate places. [2025-02-06 13:10:43,091 INFO L471 AbstractCegarLoop]: Abstraction has has 369 places, 347 transitions, 3839 flow [2025-02-06 13:10:43,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.166666666666668) internal successors, (254), 12 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:43,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:43,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:43,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 13:10:43,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2025-02-06 13:10:43,296 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:43,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:43,297 INFO L85 PathProgramCache]: Analyzing trace with hash 526386378, now seen corresponding path program 1 times [2025-02-06 13:10:43,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:43,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401694507] [2025-02-06 13:10:43,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:10:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:43,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 13:10:43,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 13:10:43,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:10:43,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 13:10:43,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:43,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401694507] [2025-02-06 13:10:43,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401694507] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:43,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:10:43,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:10:43,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961193581] [2025-02-06 13:10:43,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:43,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:10:43,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:43,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:10:43,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:10:43,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2025-02-06 13:10:43,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 347 transitions, 3839 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:43,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:43,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2025-02-06 13:10:43,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:45,828 INFO L124 PetriNetUnfolderBase]: 8672/16724 cut-off events. [2025-02-06 13:10:45,828 INFO L125 PetriNetUnfolderBase]: For 780134/782396 co-relation queries the response was YES. [2025-02-06 13:10:45,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91075 conditions, 16724 events. 8672/16724 cut-off events. For 780134/782396 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 155501 event pairs, 3216 based on Foata normal form. 988/17170 useless extension candidates. Maximal degree in co-relation 90277. Up to 6948 conditions per place. [2025-02-06 13:10:46,001 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 456 selfloop transitions, 34 changer transitions 0/536 dead transitions. [2025-02-06 13:10:46,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 536 transitions, 7206 flow [2025-02-06 13:10:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:10:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:10:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-02-06 13:10:46,002 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2025-02-06 13:10:46,002 INFO L175 Difference]: Start difference. First operand has 369 places, 347 transitions, 3839 flow. Second operand 4 states and 136 transitions. [2025-02-06 13:10:46,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 536 transitions, 7206 flow [2025-02-06 13:10:47,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 536 transitions, 7188 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-02-06 13:10:47,823 INFO L231 Difference]: Finished difference. Result has 371 places, 358 transitions, 4205 flow [2025-02-06 13:10:47,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3770, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4205, PETRI_PLACES=371, PETRI_TRANSITIONS=358} [2025-02-06 13:10:47,823 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 310 predicate places. [2025-02-06 13:10:47,823 INFO L471 AbstractCegarLoop]: Abstraction has has 371 places, 358 transitions, 4205 flow [2025-02-06 13:10:47,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:47,824 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:10:47,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:10:47,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2025-02-06 13:10:47,824 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-02-06 13:10:47,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:10:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1231667898, now seen corresponding path program 2 times [2025-02-06 13:10:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:10:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516237181] [2025-02-06 13:10:47,825 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:47,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:10:47,832 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-06 13:10:47,840 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 13:10:47,841 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:47,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 13:10:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:10:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516237181] [2025-02-06 13:10:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516237181] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:10:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729117551] [2025-02-06 13:10:48,163 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:10:48,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:10:48,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:10:48,165 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:10:48,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 13:10:48,233 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-06 13:10:48,260 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 13:10:48,260 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:10:48,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:10:48,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 13:10:48,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:10:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 13:10:48,323 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:10:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729117551] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:10:48,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 13:10:48,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2025-02-06 13:10:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502123403] [2025-02-06 13:10:48,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:10:48,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:10:48,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:10:48,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:10:48,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-02-06 13:10:48,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2025-02-06 13:10:48,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 358 transitions, 4205 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:10:48,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:10:48,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2025-02-06 13:10:48,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:10:52,442 INFO L124 PetriNetUnfolderBase]: 10291/19409 cut-off events. [2025-02-06 13:10:52,442 INFO L125 PetriNetUnfolderBase]: For 834508/836778 co-relation queries the response was YES. [2025-02-06 13:10:52,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110651 conditions, 19409 events. 10291/19409 cut-off events. For 834508/836778 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 177146 event pairs, 4544 based on Foata normal form. 320/19439 useless extension candidates. Maximal degree in co-relation 109807. Up to 15575 conditions per place. [2025-02-06 13:10:52,641 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 349 selfloop transitions, 6 changer transitions 0/400 dead transitions. [2025-02-06 13:10:52,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 400 transitions, 5370 flow [2025-02-06 13:10:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:10:52,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:10:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2025-02-06 13:10:52,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4806451612903226 [2025-02-06 13:10:52,642 INFO L175 Difference]: Start difference. First operand has 371 places, 358 transitions, 4205 flow. Second operand 5 states and 149 transitions. [2025-02-06 13:10:52,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 400 transitions, 5370 flow