./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe009_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/safe009_power.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be536b3b382c4e63adbabc11deb06983f35dbd290b78e0d42f1a068990873986 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:11:22,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:11:22,236 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:11:22,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:11:22,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:11:22,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:11:22,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:11:22,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:11:22,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:11:22,257 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:11:22,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:11:22,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:11:22,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:11:22,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:11:22,258 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:11:22,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:11:22,258 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:11:22,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:11:22,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:11:22,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:11:22,258 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:11:22,258 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:11:22,259 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:11:22,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:11:22,259 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:11:22,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:11:22,259 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:11:22,259 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:11:22,259 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:11:22,260 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:11:22,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:11:22,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:11:22,261 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/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 -> be536b3b382c4e63adbabc11deb06983f35dbd290b78e0d42f1a068990873986 [2025-03-17 14:11:22,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:11:22,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:11:22,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:11:22,516 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:11:22,516 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:11:22,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe009_power.opt.i [2025-03-17 14:11:23,631 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ddb9906/bbad189b7e584614af0d559759dd0099/FLAG910ee7807 [2025-03-17 14:11:23,965 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:11:23,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe009_power.opt.i [2025-03-17 14:11:23,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ddb9906/bbad189b7e584614af0d559759dd0099/FLAG910ee7807 [2025-03-17 14:11:24,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ddb9906/bbad189b7e584614af0d559759dd0099 [2025-03-17 14:11:24,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:11:24,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:11:24,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:11:24,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:11:24,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:11:24,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5dfcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24, skipping insertion in model container [2025-03-17 14:11:24,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:11:24,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:11:24,504 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:11:24,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:11:24,589 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:11:24,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24 WrapperNode [2025-03-17 14:11:24,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:11:24,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:11:24,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:11:24,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:11:24,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,626 INFO L138 Inliner]: procedures = 175, calls = 60, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 172 [2025-03-17 14:11:24,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:11:24,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:11:24,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:11:24,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:11:24,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,636 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,650 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2025-03-17 14:11:24,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,658 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:11:24,668 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:11:24,668 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:11:24,668 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:11:24,668 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (1/1) ... [2025-03-17 14:11:24,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:11:24,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:11:24,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 14:11:24,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 14:11:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 14:11:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 14:11:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 14:11:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 14:11:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 14:11:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:11:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-17 14:11:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-17 14:11:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-17 14:11:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-17 14:11:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-17 14:11:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-17 14:11:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:11:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 14:11:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 14:11:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:11:24,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:11:24,716 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:11:24,849 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:11:24,851 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:11:25,303 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:11:25,303 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:11:25,718 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:11:25,718 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:11:25,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:11:25 BoogieIcfgContainer [2025-03-17 14:11:25,719 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:11:25,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:11:25,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:11:25,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:11:25,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:11:24" (1/3) ... [2025-03-17 14:11:25,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430acbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:11:25, skipping insertion in model container [2025-03-17 14:11:25,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:11:24" (2/3) ... [2025-03-17 14:11:25,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430acbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:11:25, skipping insertion in model container [2025-03-17 14:11:25,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:11:25" (3/3) ... [2025-03-17 14:11:25,728 INFO L128 eAbstractionObserver]: Analyzing ICFG safe009_power.opt.i [2025-03-17 14:11:25,740 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:11:25,741 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe009_power.opt.i that has 4 procedures, 76 locations, 1 initial locations, 0 loop locations, and 37 error locations. [2025-03-17 14:11:25,741 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:11:25,868 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 14:11:25,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 77 transitions, 166 flow [2025-03-17 14:11:25,962 INFO L124 PetriNetUnfolderBase]: 2/74 cut-off events. [2025-03-17 14:11:25,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:11:25,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 315 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2025-03-17 14:11:25,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 77 transitions, 166 flow [2025-03-17 14:11:25,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 74 transitions, 157 flow [2025-03-17 14:11:25,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:11:25,991 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;@467afb21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:11:25,991 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2025-03-17 14:11:25,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:11:25,997 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2025-03-17 14:11:25,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:11:25,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:25,998 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 14:11:25,998 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err4ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:26,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash 789994765, now seen corresponding path program 1 times [2025-03-17 14:11:26,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935755256] [2025-03-17 14:11:26,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:26,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 14:11:26,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 14:11:26,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:26,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:26,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:26,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935755256] [2025-03-17 14:11:26,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935755256] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:26,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:26,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:11:26,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082297310] [2025-03-17 14:11:26,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:26,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:11:26,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:26,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:11:26,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:11:26,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 77 [2025-03-17 14:11:26,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2025-03-17 14:11:26,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:26,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 77 [2025-03-17 14:11:26,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:32,452 INFO L124 PetriNetUnfolderBase]: 46127/64543 cut-off events. [2025-03-17 14:11:32,453 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2025-03-17 14:11:32,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128478 conditions, 64543 events. 46127/64543 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 2985. Compared 483371 event pairs, 7823 based on Foata normal form. 2160/36757 useless extension candidates. Maximal degree in co-relation 128467. Up to 52337 conditions per place. [2025-03-17 14:11:32,783 INFO L140 encePairwiseOnDemand]: 58/77 looper letters, 85 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2025-03-17 14:11:32,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 377 flow [2025-03-17 14:11:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:11:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:11:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2025-03-17 14:11:32,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6493506493506493 [2025-03-17 14:11:32,796 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 157 flow. Second operand 3 states and 150 transitions. [2025-03-17 14:11:32,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 377 flow [2025-03-17 14:11:32,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 372 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:11:32,805 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 122 flow [2025-03-17 14:11:32,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2025-03-17 14:11:32,811 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -17 predicate places. [2025-03-17 14:11:32,811 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 122 flow [2025-03-17 14:11:32,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2025-03-17 14:11:32,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:32,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:11:32,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:11:32,812 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:32,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1279965219, now seen corresponding path program 1 times [2025-03-17 14:11:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:32,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446354269] [2025-03-17 14:11:32,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:32,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:11:32,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:11:32,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:32,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:32,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:32,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446354269] [2025-03-17 14:11:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446354269] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:32,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:32,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:11:32,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706748729] [2025-03-17 14:11:32,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:32,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:11:32,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:32,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:11:32,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:11:32,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 77 [2025-03-17 14:11:32,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-17 14:11:32,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:32,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 77 [2025-03-17 14:11:32,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:40,217 INFO L124 PetriNetUnfolderBase]: 58261/84642 cut-off events. [2025-03-17 14:11:40,218 INFO L125 PetriNetUnfolderBase]: For 1753/1753 co-relation queries the response was YES. [2025-03-17 14:11:40,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167004 conditions, 84642 events. 58261/84642 cut-off events. For 1753/1753 co-relation queries the response was YES. Maximal size of possible extension queue 3931. Compared 655851 event pairs, 38943 based on Foata normal form. 0/46249 useless extension candidates. Maximal degree in co-relation 166994. Up to 62455 conditions per place. [2025-03-17 14:11:40,634 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 84 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2025-03-17 14:11:40,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 388 flow [2025-03-17 14:11:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:11:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:11:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2025-03-17 14:11:40,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5281385281385281 [2025-03-17 14:11:40,641 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 122 flow. Second operand 3 states and 122 transitions. [2025-03-17 14:11:40,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 388 flow [2025-03-17 14:11:40,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 97 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:11:40,645 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 160 flow [2025-03-17 14:11:40,646 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2025-03-17 14:11:40,646 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -16 predicate places. [2025-03-17 14:11:40,646 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 160 flow [2025-03-17 14:11:40,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-17 14:11:40,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:40,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:11:40,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:11:40,648 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:40,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1279965217, now seen corresponding path program 1 times [2025-03-17 14:11:40,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:40,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143248062] [2025-03-17 14:11:40,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:40,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:40,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:11:40,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:11:40,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:40,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:40,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:40,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143248062] [2025-03-17 14:11:40,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143248062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:40,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:40,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:11:40,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711015696] [2025-03-17 14:11:40,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:40,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:11:40,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:40,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:11:40,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:11:40,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 77 [2025-03-17 14:11:40,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-17 14:11:40,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:40,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 77 [2025-03-17 14:11:40,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:44,217 INFO L124 PetriNetUnfolderBase]: 22587/33984 cut-off events. [2025-03-17 14:11:44,217 INFO L125 PetriNetUnfolderBase]: For 7263/7266 co-relation queries the response was YES. [2025-03-17 14:11:44,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74550 conditions, 33984 events. 22587/33984 cut-off events. For 7263/7266 co-relation queries the response was YES. Maximal size of possible extension queue 1480. Compared 243450 event pairs, 20930 based on Foata normal form. 0/29023 useless extension candidates. Maximal degree in co-relation 74540. Up to 31446 conditions per place. [2025-03-17 14:11:44,350 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 44 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2025-03-17 14:11:44,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 230 flow [2025-03-17 14:11:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:11:44,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:11:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2025-03-17 14:11:44,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.341991341991342 [2025-03-17 14:11:44,352 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 160 flow. Second operand 3 states and 79 transitions. [2025-03-17 14:11:44,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 230 flow [2025-03-17 14:11:44,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:11:44,354 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 136 flow [2025-03-17 14:11:44,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2025-03-17 14:11:44,354 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -24 predicate places. [2025-03-17 14:11:44,354 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 136 flow [2025-03-17 14:11:44,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-17 14:11:44,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:44,356 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:11:44,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:11:44,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:44,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:44,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1279965216, now seen corresponding path program 1 times [2025-03-17 14:11:44,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:44,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315495493] [2025-03-17 14:11:44,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:44,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:44,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:11:44,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:11:44,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:44,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:44,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:44,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315495493] [2025-03-17 14:11:44,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315495493] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:44,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:44,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:11:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167184914] [2025-03-17 14:11:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:44,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:11:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:44,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:11:44,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:11:44,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 77 [2025-03-17 14:11:44,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-17 14:11:44,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:44,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 77 [2025-03-17 14:11:44,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:45,177 INFO L124 PetriNetUnfolderBase]: 6191/9649 cut-off events. [2025-03-17 14:11:45,177 INFO L125 PetriNetUnfolderBase]: For 2264/2267 co-relation queries the response was YES. [2025-03-17 14:11:45,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21224 conditions, 9649 events. 6191/9649 cut-off events. For 2264/2267 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 60408 event pairs, 5619 based on Foata normal form. 2299/11516 useless extension candidates. Maximal degree in co-relation 21217. Up to 8798 conditions per place. [2025-03-17 14:11:45,214 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 34 selfloop transitions, 1 changer transitions 1/43 dead transitions. [2025-03-17 14:11:45,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 188 flow [2025-03-17 14:11:45,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:11:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:11:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-17 14:11:45,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2025-03-17 14:11:45,215 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 136 flow. Second operand 3 states and 70 transitions. [2025-03-17 14:11:45,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 188 flow [2025-03-17 14:11:45,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:11:45,217 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 115 flow [2025-03-17 14:11:45,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2025-03-17 14:11:45,217 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -32 predicate places. [2025-03-17 14:11:45,217 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 115 flow [2025-03-17 14:11:45,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-03-17 14:11:45,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:45,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:11:45,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:11:45,218 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:45,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash -302866672, now seen corresponding path program 1 times [2025-03-17 14:11:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002220056] [2025-03-17 14:11:45,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:45,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 14:11:45,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 14:11:45,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:45,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:45,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:45,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002220056] [2025-03-17 14:11:45,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002220056] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:45,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:45,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:11:45,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029010525] [2025-03-17 14:11:45,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:45,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:11:45,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:45,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:11:45,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:11:45,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 77 [2025-03-17 14:11:45,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:11:45,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:45,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 77 [2025-03-17 14:11:45,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:46,216 INFO L124 PetriNetUnfolderBase]: 5482/7956 cut-off events. [2025-03-17 14:11:46,216 INFO L125 PetriNetUnfolderBase]: For 1386/1389 co-relation queries the response was YES. [2025-03-17 14:11:46,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18227 conditions, 7956 events. 5482/7956 cut-off events. For 1386/1389 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 44774 event pairs, 908 based on Foata normal form. 0/7599 useless extension candidates. Maximal degree in co-relation 18219. Up to 6986 conditions per place. [2025-03-17 14:11:46,251 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 54 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2025-03-17 14:11:46,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 289 flow [2025-03-17 14:11:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:11:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:11:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2025-03-17 14:11:46,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2025-03-17 14:11:46,253 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 115 flow. Second operand 3 states and 81 transitions. [2025-03-17 14:11:46,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 289 flow [2025-03-17 14:11:46,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:11:46,257 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 127 flow [2025-03-17 14:11:46,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2025-03-17 14:11:46,259 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -31 predicate places. [2025-03-17 14:11:46,261 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 127 flow [2025-03-17 14:11:46,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:11:46,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:46,261 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:11:46,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 14:11:46,261 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:46,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:46,261 INFO L85 PathProgramCache]: Analyzing trace with hash -580634033, now seen corresponding path program 1 times [2025-03-17 14:11:46,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:46,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777225538] [2025-03-17 14:11:46,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:46,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:46,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:11:46,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:11:46,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:46,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:46,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:46,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777225538] [2025-03-17 14:11:46,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777225538] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:46,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:46,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:11:46,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387777645] [2025-03-17 14:11:46,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:46,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:11:46,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:46,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:11:46,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:11:46,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 77 [2025-03-17 14:11:46,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-17 14:11:46,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:46,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 77 [2025-03-17 14:11:46,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:47,180 INFO L124 PetriNetUnfolderBase]: 5052/7351 cut-off events. [2025-03-17 14:11:47,180 INFO L125 PetriNetUnfolderBase]: For 1973/1976 co-relation queries the response was YES. [2025-03-17 14:11:47,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17687 conditions, 7351 events. 5052/7351 cut-off events. For 1973/1976 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 41045 event pairs, 748 based on Foata normal form. 0/7344 useless extension candidates. Maximal degree in co-relation 17677. Up to 6380 conditions per place. [2025-03-17 14:11:47,207 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 53 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2025-03-17 14:11:47,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 295 flow [2025-03-17 14:11:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:11:47,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:11:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-03-17 14:11:47,208 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.288961038961039 [2025-03-17 14:11:47,208 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 127 flow. Second operand 4 states and 89 transitions. [2025-03-17 14:11:47,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 295 flow [2025-03-17 14:11:47,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 289 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:11:47,212 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 123 flow [2025-03-17 14:11:47,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2025-03-17 14:11:47,212 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -31 predicate places. [2025-03-17 14:11:47,212 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 123 flow [2025-03-17 14:11:47,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-17 14:11:47,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:47,213 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:11:47,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 14:11:47,213 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:47,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:47,213 INFO L85 PathProgramCache]: Analyzing trace with hash -580634032, now seen corresponding path program 1 times [2025-03-17 14:11:47,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:47,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751125083] [2025-03-17 14:11:47,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:47,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:47,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:11:47,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:11:47,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:47,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:47,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:47,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751125083] [2025-03-17 14:11:47,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751125083] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:47,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:47,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:11:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250195465] [2025-03-17 14:11:47,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:47,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:11:47,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:47,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:11:47,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:11:47,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 77 [2025-03-17 14:11:47,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-03-17 14:11:47,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:47,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 77 [2025-03-17 14:11:47,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:48,002 INFO L124 PetriNetUnfolderBase]: 4622/6746 cut-off events. [2025-03-17 14:11:48,002 INFO L125 PetriNetUnfolderBase]: For 1828/1831 co-relation queries the response was YES. [2025-03-17 14:11:48,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16157 conditions, 6746 events. 4622/6746 cut-off events. For 1828/1831 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 37507 event pairs, 588 based on Foata normal form. 175/6914 useless extension candidates. Maximal degree in co-relation 16147. Up to 5775 conditions per place. [2025-03-17 14:11:48,027 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 52 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2025-03-17 14:11:48,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 289 flow [2025-03-17 14:11:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:11:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:11:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2025-03-17 14:11:48,028 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2025-03-17 14:11:48,028 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 123 flow. Second operand 4 states and 88 transitions. [2025-03-17 14:11:48,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 289 flow [2025-03-17 14:11:48,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 282 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:11:48,030 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 118 flow [2025-03-17 14:11:48,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2025-03-17 14:11:48,031 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -32 predicate places. [2025-03-17 14:11:48,031 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 118 flow [2025-03-17 14:11:48,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-03-17 14:11:48,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:48,031 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:11:48,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 14:11:48,031 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:48,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:48,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1743600497, now seen corresponding path program 1 times [2025-03-17 14:11:48,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:48,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892688063] [2025-03-17 14:11:48,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:48,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:11:48,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:11:48,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:48,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:48,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:48,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892688063] [2025-03-17 14:11:48,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892688063] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:48,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:48,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:11:48,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767837006] [2025-03-17 14:11:48,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:48,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:11:48,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:48,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:11:48,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:11:48,073 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 77 [2025-03-17 14:11:48,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:11:48,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:48,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 77 [2025-03-17 14:11:48,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:48,733 INFO L124 PetriNetUnfolderBase]: 4622/7240 cut-off events. [2025-03-17 14:11:48,733 INFO L125 PetriNetUnfolderBase]: For 2245/2248 co-relation queries the response was YES. [2025-03-17 14:11:48,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16650 conditions, 7240 events. 4622/7240 cut-off events. For 2245/2248 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 43342 event pairs, 4188 based on Foata normal form. 210/7438 useless extension candidates. Maximal degree in co-relation 16641. Up to 6599 conditions per place. [2025-03-17 14:11:48,750 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 31 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2025-03-17 14:11:48,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 182 flow [2025-03-17 14:11:48,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:11:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:11:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-03-17 14:11:48,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24242424242424243 [2025-03-17 14:11:48,751 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 118 flow. Second operand 3 states and 56 transitions. [2025-03-17 14:11:48,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 182 flow [2025-03-17 14:11:48,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:11:48,754 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 112 flow [2025-03-17 14:11:48,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2025-03-17 14:11:48,754 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -33 predicate places. [2025-03-17 14:11:48,756 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 112 flow [2025-03-17 14:11:48,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:11:48,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:48,756 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:11:48,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 14:11:48,756 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:48,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1743601571, now seen corresponding path program 1 times [2025-03-17 14:11:48,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:48,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357359240] [2025-03-17 14:11:48,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:48,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:48,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:11:48,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:11:48,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:48,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357359240] [2025-03-17 14:11:48,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357359240] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:48,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:48,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:11:48,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884175593] [2025-03-17 14:11:48,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:48,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:11:48,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:48,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:11:48,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:11:48,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 77 [2025-03-17 14:11:48,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-03-17 14:11:48,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:48,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 77 [2025-03-17 14:11:48,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:49,779 INFO L124 PetriNetUnfolderBase]: 5835/8789 cut-off events. [2025-03-17 14:11:49,779 INFO L125 PetriNetUnfolderBase]: For 1926/1929 co-relation queries the response was YES. [2025-03-17 14:11:49,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20694 conditions, 8789 events. 5835/8789 cut-off events. For 1926/1929 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 50884 event pairs, 1683 based on Foata normal form. 0/8581 useless extension candidates. Maximal degree in co-relation 20685. Up to 5482 conditions per place. [2025-03-17 14:11:49,811 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 46 selfloop transitions, 3 changer transitions 80/134 dead transitions. [2025-03-17 14:11:49,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 134 transitions, 676 flow [2025-03-17 14:11:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:11:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:11:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2025-03-17 14:11:49,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2905844155844156 [2025-03-17 14:11:49,812 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 112 flow. Second operand 8 states and 179 transitions. [2025-03-17 14:11:49,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 134 transitions, 676 flow [2025-03-17 14:11:49,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 134 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:11:49,815 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 144 flow [2025-03-17 14:11:49,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2025-03-17 14:11:49,815 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -23 predicate places. [2025-03-17 14:11:49,815 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 144 flow [2025-03-17 14:11:49,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-03-17 14:11:49,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:49,816 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:11:49,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 14:11:49,816 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:49,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:49,816 INFO L85 PathProgramCache]: Analyzing trace with hash -185848322, now seen corresponding path program 1 times [2025-03-17 14:11:49,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:49,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050843518] [2025-03-17 14:11:49,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:49,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:49,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 14:11:49,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 14:11:49,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:49,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:49,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:49,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050843518] [2025-03-17 14:11:49,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050843518] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:49,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:49,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:11:49,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595293992] [2025-03-17 14:11:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:49,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:11:49,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:49,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:11:49,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:11:49,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 77 [2025-03-17 14:11:49,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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) [2025-03-17 14:11:49,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:49,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 77 [2025-03-17 14:11:49,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:50,791 INFO L124 PetriNetUnfolderBase]: 4548/6917 cut-off events. [2025-03-17 14:11:50,791 INFO L125 PetriNetUnfolderBase]: For 5554/5554 co-relation queries the response was YES. [2025-03-17 14:11:50,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19453 conditions, 6917 events. 4548/6917 cut-off events. For 5554/5554 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 39785 event pairs, 542 based on Foata normal form. 194/7108 useless extension candidates. Maximal degree in co-relation 19438. Up to 5011 conditions per place. [2025-03-17 14:11:50,823 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 51 selfloop transitions, 2 changer transitions 57/115 dead transitions. [2025-03-17 14:11:50,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 115 transitions, 666 flow [2025-03-17 14:11:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:11:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:11:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2025-03-17 14:11:50,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29313543599257885 [2025-03-17 14:11:50,824 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 144 flow. Second operand 7 states and 158 transitions. [2025-03-17 14:11:50,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 115 transitions, 666 flow [2025-03-17 14:11:50,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 115 transitions, 653 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-17 14:11:50,847 INFO L231 Difference]: Finished difference. Result has 61 places, 39 transitions, 153 flow [2025-03-17 14:11:50,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=61, PETRI_TRANSITIONS=39} [2025-03-17 14:11:50,848 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -21 predicate places. [2025-03-17 14:11:50,848 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 39 transitions, 153 flow [2025-03-17 14:11:50,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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) [2025-03-17 14:11:50,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:50,848 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:11:50,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 14:11:50,848 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:50,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash 927842881, now seen corresponding path program 1 times [2025-03-17 14:11:50,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:50,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395267834] [2025-03-17 14:11:50,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:50,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:50,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:11:50,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:11:50,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:50,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:51,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:51,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395267834] [2025-03-17 14:11:51,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395267834] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:51,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:51,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:11:51,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318381920] [2025-03-17 14:11:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:51,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:11:51,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:51,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:11:51,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:11:51,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 77 [2025-03-17 14:11:51,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 39 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-17 14:11:51,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:51,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 77 [2025-03-17 14:11:51,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:51,898 INFO L124 PetriNetUnfolderBase]: 4150/6302 cut-off events. [2025-03-17 14:11:51,898 INFO L125 PetriNetUnfolderBase]: For 6102/6105 co-relation queries the response was YES. [2025-03-17 14:11:51,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18337 conditions, 6302 events. 4150/6302 cut-off events. For 6102/6105 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 33651 event pairs, 1311 based on Foata normal form. 144/6439 useless extension candidates. Maximal degree in co-relation 18318. Up to 4692 conditions per place. [2025-03-17 14:11:51,923 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 49 selfloop transitions, 3 changer transitions 53/110 dead transitions. [2025-03-17 14:11:51,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 110 transitions, 618 flow [2025-03-17 14:11:51,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:11:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:11:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2025-03-17 14:11:51,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.274582560296846 [2025-03-17 14:11:51,925 INFO L175 Difference]: Start difference. First operand has 61 places, 39 transitions, 153 flow. Second operand 7 states and 148 transitions. [2025-03-17 14:11:51,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 110 transitions, 618 flow [2025-03-17 14:11:51,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 110 transitions, 596 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-17 14:11:51,948 INFO L231 Difference]: Finished difference. Result has 62 places, 39 transitions, 160 flow [2025-03-17 14:11:51,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=62, PETRI_TRANSITIONS=39} [2025-03-17 14:11:51,949 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -20 predicate places. [2025-03-17 14:11:51,949 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 39 transitions, 160 flow [2025-03-17 14:11:51,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2025-03-17 14:11:51,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:51,949 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] [2025-03-17 14:11:51,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 14:11:51,949 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:51,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:51,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1872615035, now seen corresponding path program 1 times [2025-03-17 14:11:51,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:51,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278779141] [2025-03-17 14:11:51,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:51,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:51,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 14:11:51,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 14:11:51,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:51,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278779141] [2025-03-17 14:11:52,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278779141] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:52,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:52,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:11:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526015490] [2025-03-17 14:11:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:52,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:11:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:52,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:11:52,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:11:52,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 77 [2025-03-17 14:11:52,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 39 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:11:52,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:52,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 77 [2025-03-17 14:11:52,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:53,033 INFO L124 PetriNetUnfolderBase]: 6096/9124 cut-off events. [2025-03-17 14:11:53,034 INFO L125 PetriNetUnfolderBase]: For 8928/8931 co-relation queries the response was YES. [2025-03-17 14:11:53,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25994 conditions, 9124 events. 6096/9124 cut-off events. For 8928/8931 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 51903 event pairs, 2017 based on Foata normal form. 216/9328 useless extension candidates. Maximal degree in co-relation 25974. Up to 4142 conditions per place. [2025-03-17 14:11:53,075 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 54 selfloop transitions, 3 changer transitions 57/119 dead transitions. [2025-03-17 14:11:53,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 119 transitions, 667 flow [2025-03-17 14:11:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:11:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:11:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2025-03-17 14:11:53,077 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2912801484230056 [2025-03-17 14:11:53,077 INFO L175 Difference]: Start difference. First operand has 62 places, 39 transitions, 160 flow. Second operand 7 states and 157 transitions. [2025-03-17 14:11:53,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 119 transitions, 667 flow [2025-03-17 14:11:53,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 631 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-03-17 14:11:53,122 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 163 flow [2025-03-17 14:11:53,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=163, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2025-03-17 14:11:53,123 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -19 predicate places. [2025-03-17 14:11:53,123 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 163 flow [2025-03-17 14:11:53,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:11:53,123 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:53,123 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] [2025-03-17 14:11:53,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 14:11:53,123 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:53,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash -316706416, now seen corresponding path program 1 times [2025-03-17 14:11:53,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:53,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025813839] [2025-03-17 14:11:53,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:53,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:53,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-17 14:11:53,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 14:11:53,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:53,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:53,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:53,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025813839] [2025-03-17 14:11:53,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025813839] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:53,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:53,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:11:53,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345187922] [2025-03-17 14:11:53,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:53,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:11:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:53,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:11:53,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:11:53,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 77 [2025-03-17 14:11:53,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2025-03-17 14:11:53,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:53,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 77 [2025-03-17 14:11:53,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:54,975 INFO L124 PetriNetUnfolderBase]: 9038/13612 cut-off events. [2025-03-17 14:11:54,975 INFO L125 PetriNetUnfolderBase]: For 14361/14364 co-relation queries the response was YES. [2025-03-17 14:11:54,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38237 conditions, 13612 events. 9038/13612 cut-off events. For 14361/14364 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 81818 event pairs, 1648 based on Foata normal form. 216/13816 useless extension candidates. Maximal degree in co-relation 38217. Up to 6607 conditions per place. [2025-03-17 14:11:55,011 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 51 selfloop transitions, 4 changer transitions 48/108 dead transitions. [2025-03-17 14:11:55,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 636 flow [2025-03-17 14:11:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 14:11:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 14:11:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2025-03-17 14:11:55,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3008658008658009 [2025-03-17 14:11:55,012 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 163 flow. Second operand 6 states and 139 transitions. [2025-03-17 14:11:55,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 636 flow [2025-03-17 14:11:55,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 609 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-03-17 14:11:55,065 INFO L231 Difference]: Finished difference. Result has 62 places, 39 transitions, 165 flow [2025-03-17 14:11:55,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=62, PETRI_TRANSITIONS=39} [2025-03-17 14:11:55,065 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -20 predicate places. [2025-03-17 14:11:55,065 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 39 transitions, 165 flow [2025-03-17 14:11:55,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 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) [2025-03-17 14:11:55,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:55,065 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] [2025-03-17 14:11:55,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 14:11:55,066 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:55,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:55,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1301169136, now seen corresponding path program 2 times [2025-03-17 14:11:55,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:55,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909603599] [2025-03-17 14:11:55,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:11:55,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:55,075 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-03-17 14:11:55,085 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-17 14:11:55,086 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:11:55,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:11:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:11:55,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:11:55,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909603599] [2025-03-17 14:11:55,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909603599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:11:55,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:11:55,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:11:55,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43312453] [2025-03-17 14:11:55,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:11:55,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:11:55,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:11:55,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:11:55,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:11:55,697 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 77 [2025-03-17 14:11:55,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 39 transitions, 165 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2025-03-17 14:11:55,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:11:55,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 77 [2025-03-17 14:11:55,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:11:56,693 INFO L124 PetriNetUnfolderBase]: 5633/8681 cut-off events. [2025-03-17 14:11:56,693 INFO L125 PetriNetUnfolderBase]: For 7918/7918 co-relation queries the response was YES. [2025-03-17 14:11:56,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23902 conditions, 8681 events. 5633/8681 cut-off events. For 7918/7918 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 50658 event pairs, 2504 based on Foata normal form. 213/8892 useless extension candidates. Maximal degree in co-relation 23882. Up to 6865 conditions per place. [2025-03-17 14:11:56,723 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 55 selfloop transitions, 11 changer transitions 51/122 dead transitions. [2025-03-17 14:11:56,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 122 transitions, 763 flow [2025-03-17 14:11:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:11:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:11:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2025-03-17 14:11:56,725 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24321133412042503 [2025-03-17 14:11:56,725 INFO L175 Difference]: Start difference. First operand has 62 places, 39 transitions, 165 flow. Second operand 11 states and 206 transitions. [2025-03-17 14:11:56,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 122 transitions, 763 flow [2025-03-17 14:11:56,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 122 transitions, 733 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-17 14:11:56,742 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 277 flow [2025-03-17 14:11:56,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=277, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2025-03-17 14:11:56,742 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2025-03-17 14:11:56,742 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 277 flow [2025-03-17 14:11:56,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2025-03-17 14:11:56,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:11:56,742 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] [2025-03-17 14:11:56,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 14:11:56,743 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2025-03-17 14:11:56,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:11:56,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1190443136, now seen corresponding path program 1 times [2025-03-17 14:11:56,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:11:56,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758036483] [2025-03-17 14:11:56,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:11:56,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:11:56,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 14:11:56,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 14:11:56,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:11:56,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat