./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:17:57,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:17:57,578 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:17:57,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:17:57,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:17:57,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:17:57,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:17:57,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:17:57,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:17:57,607 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:17:57,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:17:57,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:17:57,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:17:57,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:17:57,609 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:17:57,609 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:17:57,610 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:17:57,610 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:17:57,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:17:57,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:17:57,610 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:17:57,610 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:17:57,610 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:17:57,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:17:57,611 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:17:57,611 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:17:57,611 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:17:57,611 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:17:57,611 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:17:57,611 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:17:57,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:17:57,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:17:57,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:17:57,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:17:57,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:17:57,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:17:57,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:17:57,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:17:57,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:17:57,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:17:57,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:17:57,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:17:57,613 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9565dcbef2b519c6326563c41ab6633c2e0b59b7d9ee2c8626de0cd3767b77b1 [2025-02-08 08:17:57,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:17:57,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:17:57,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:17:57,919 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:17:57,919 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:17:57,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2025-02-08 08:17:59,269 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d0899d6ee/30e9bf272e7d4ca9bb3b51592f0abaa2/FLAGbd0b484e5 [2025-02-08 08:17:59,637 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:17:59,644 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix030_power.opt_pso.opt_rmo.opt.i [2025-02-08 08:17:59,665 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d0899d6ee/30e9bf272e7d4ca9bb3b51592f0abaa2/FLAGbd0b484e5 [2025-02-08 08:17:59,685 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d0899d6ee/30e9bf272e7d4ca9bb3b51592f0abaa2 [2025-02-08 08:17:59,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:17:59,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:17:59,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:17:59,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:17:59,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:17:59,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:17:59" (1/1) ... [2025-02-08 08:17:59,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79758715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:17:59, skipping insertion in model container [2025-02-08 08:17:59,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:17:59" (1/1) ... [2025-02-08 08:17:59,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:18:00,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:18:00,025 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:18:00,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:18:00,141 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:18:00,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00 WrapperNode [2025-02-08 08:18:00,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:18:00,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:18:00,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:18:00,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:18:00,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,195 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 149 [2025-02-08 08:18:00,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:18:00,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:18:00,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:18:00,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:18:00,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,208 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,230 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 08:18:00,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,240 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,242 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:18:00,248 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:18:00,248 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:18:00,248 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:18:00,249 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (1/1) ... [2025-02-08 08:18:00,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:18:00,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:18:00,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:18:00,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:18:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:18:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:18:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 08:18:00,320 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 08:18:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 08:18:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 08:18:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 08:18:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 08:18:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-08 08:18:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-08 08:18:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:18:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:18:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:18:00,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:18:00,323 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:18:00,475 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:18:00,476 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:18:00,827 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:18:00,828 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:18:01,037 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:18:01,038 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:18:01,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:18:01 BoogieIcfgContainer [2025-02-08 08:18:01,038 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:18:01,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:18:01,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:18:01,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:18:01,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:17:59" (1/3) ... [2025-02-08 08:18:01,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b03153c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:18:01, skipping insertion in model container [2025-02-08 08:18:01,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:18:00" (2/3) ... [2025-02-08 08:18:01,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b03153c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:18:01, skipping insertion in model container [2025-02-08 08:18:01,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:18:01" (3/3) ... [2025-02-08 08:18:01,048 INFO L128 eAbstractionObserver]: Analyzing ICFG mix030_power.opt_pso.opt_rmo.opt.i [2025-02-08 08:18:01,084 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:18:01,088 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix030_power.opt_pso.opt_rmo.opt.i that has 5 procedures, 53 locations, 1 initial locations, 0 loop locations, and 3 error locations. [2025-02-08 08:18:01,089 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:18:01,155 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:18:01,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 54 transitions, 124 flow [2025-02-08 08:18:01,236 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2025-02-08 08:18:01,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:18:01,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 2/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2025-02-08 08:18:01,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 54 transitions, 124 flow [2025-02-08 08:18:01,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 50 transitions, 112 flow [2025-02-08 08:18:01,260 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:18:01,274 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;@1fc98b8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:18:01,274 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-02-08 08:18:01,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:18:01,286 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-02-08 08:18:01,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:18:01,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:18:01,288 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:18:01,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:18:01,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:18:01,294 INFO L85 PathProgramCache]: Analyzing trace with hash 654312720, now seen corresponding path program 1 times [2025-02-08 08:18:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:18:01,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724234561] [2025-02-08 08:18:01,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:18:01,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:18:01,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:18:01,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:18:01,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:18:01,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:18:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:18:01,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:18:01,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724234561] [2025-02-08 08:18:01,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724234561] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:18:01,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:18:01,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:18:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474626880] [2025-02-08 08:18:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:18:01,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:18:01,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:18:01,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:18:01,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:18:01,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2025-02-08 08:18:01,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:18:01,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:18:01,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2025-02-08 08:18:01,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:18:07,211 INFO L124 PetriNetUnfolderBase]: 50459/67061 cut-off events. [2025-02-08 08:18:07,212 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2025-02-08 08:18:07,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133681 conditions, 67061 events. 50459/67061 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1951. Compared 406714 event pairs, 6359 based on Foata normal form. 3024/70034 useless extension candidates. Maximal degree in co-relation 133669. Up to 57061 conditions per place. [2025-02-08 08:18:07,687 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 61 selfloop transitions, 2 changer transitions 2/73 dead transitions. [2025-02-08 08:18:07,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 291 flow [2025-02-08 08:18:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:18:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:18:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2025-02-08 08:18:07,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2025-02-08 08:18:07,704 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 106 transitions. [2025-02-08 08:18:07,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 291 flow [2025-02-08 08:18:07,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 286 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 08:18:07,720 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 102 flow [2025-02-08 08:18:07,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2025-02-08 08:18:07,727 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2025-02-08 08:18:07,730 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 102 flow [2025-02-08 08:18:07,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:18:07,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:18:07,730 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:18:07,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:18:07,731 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:18:07,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:18:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1131897274, now seen corresponding path program 1 times [2025-02-08 08:18:07,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:18:07,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708867794] [2025-02-08 08:18:07,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:18:07,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:18:07,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 08:18:07,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 08:18:07,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:18:07,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:18:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:18:07,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:18:07,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708867794] [2025-02-08 08:18:07,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708867794] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:18:07,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:18:07,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:18:07,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779703956] [2025-02-08 08:18:07,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:18:07,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:18:07,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:18:07,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:18:07,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:18:07,881 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-02-08 08:18:07,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:18:07,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:18:07,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-02-08 08:18:07,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:18:11,688 INFO L124 PetriNetUnfolderBase]: 45383/63877 cut-off events. [2025-02-08 08:18:11,688 INFO L125 PetriNetUnfolderBase]: For 2340/2340 co-relation queries the response was YES. [2025-02-08 08:18:11,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126247 conditions, 63877 events. 45383/63877 cut-off events. For 2340/2340 co-relation queries the response was YES. Maximal size of possible extension queue 1966. Compared 421275 event pairs, 45383 based on Foata normal form. 1512/65129 useless extension candidates. Maximal degree in co-relation 126237. Up to 59508 conditions per place. [2025-02-08 08:18:12,071 INFO L140 encePairwiseOnDemand]: 52/54 looper letters, 35 selfloop transitions, 1 changer transitions 1/44 dead transitions. [2025-02-08 08:18:12,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 44 transitions, 174 flow [2025-02-08 08:18:12,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:18:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:18:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-02-08 08:18:12,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2025-02-08 08:18:12,074 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 71 transitions. [2025-02-08 08:18:12,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 44 transitions, 174 flow [2025-02-08 08:18:12,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:18:12,082 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 96 flow [2025-02-08 08:18:12,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-02-08 08:18:12,083 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2025-02-08 08:18:12,083 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 96 flow [2025-02-08 08:18:12,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:18:12,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:18:12,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:18:12,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:18:12,085 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:18:12,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:18:12,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1131897721, now seen corresponding path program 1 times [2025-02-08 08:18:12,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:18:12,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221461344] [2025-02-08 08:18:12,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:18:12,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:18:12,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 08:18:12,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 08:18:12,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:18:12,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:18:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:18:12,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:18:12,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221461344] [2025-02-08 08:18:12,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221461344] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:18:12,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:18:12,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:18:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650830156] [2025-02-08 08:18:12,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:18:12,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:18:12,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:18:12,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:18:12,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:18:12,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-02-08 08:18:12,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:18:12,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:18:12,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-02-08 08:18:12,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:18:20,395 INFO L124 PetriNetUnfolderBase]: 82331/110833 cut-off events. [2025-02-08 08:18:20,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:18:20,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219979 conditions, 110833 events. 82331/110833 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2965. Compared 695562 event pairs, 9851 based on Foata normal form. 0/108929 useless extension candidates. Maximal degree in co-relation 219973. Up to 42029 conditions per place. [2025-02-08 08:18:20,960 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 69 selfloop transitions, 11 changer transitions 158/244 dead transitions. [2025-02-08 08:18:20,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 244 transitions, 974 flow [2025-02-08 08:18:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 08:18:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 08:18:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 373 transitions. [2025-02-08 08:18:20,963 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5756172839506173 [2025-02-08 08:18:20,963 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 96 flow. Second operand 12 states and 373 transitions. [2025-02-08 08:18:20,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 244 transitions, 974 flow [2025-02-08 08:18:20,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 244 transitions, 973 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:18:20,969 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 237 flow [2025-02-08 08:18:20,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=237, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2025-02-08 08:18:20,971 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2025-02-08 08:18:20,971 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 237 flow [2025-02-08 08:18:20,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:18:20,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:18:20,971 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:18:20,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:18:20,972 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:18:20,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:18:20,972 INFO L85 PathProgramCache]: Analyzing trace with hash -858707192, now seen corresponding path program 1 times [2025-02-08 08:18:20,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:18:20,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103617679] [2025-02-08 08:18:20,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:18:20,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:18:20,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 08:18:20,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 08:18:20,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:18:20,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:18:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:18:21,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:18:21,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103617679] [2025-02-08 08:18:21,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103617679] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:18:21,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:18:21,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:18:21,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654636754] [2025-02-08 08:18:21,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:18:21,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:18:21,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:18:21,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:18:21,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:18:21,484 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-02-08 08:18:21,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:18:21,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:18:21,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-02-08 08:18:21,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:18:29,198 INFO L124 PetriNetUnfolderBase]: 68806/93446 cut-off events. [2025-02-08 08:18:29,199 INFO L125 PetriNetUnfolderBase]: For 174813/174813 co-relation queries the response was YES. [2025-02-08 08:18:29,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301017 conditions, 93446 events. 68806/93446 cut-off events. For 174813/174813 co-relation queries the response was YES. Maximal size of possible extension queue 2338. Compared 594028 event pairs, 8011 based on Foata normal form. 1852/95295 useless extension candidates. Maximal degree in co-relation 300999. Up to 51401 conditions per place. [2025-02-08 08:18:29,866 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 82 selfloop transitions, 23 changer transitions 114/225 dead transitions. [2025-02-08 08:18:29,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 225 transitions, 1547 flow [2025-02-08 08:18:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 08:18:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 08:18:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 308 transitions. [2025-02-08 08:18:29,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2025-02-08 08:18:29,869 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 237 flow. Second operand 10 states and 308 transitions. [2025-02-08 08:18:29,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 225 transitions, 1547 flow [2025-02-08 08:18:32,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 225 transitions, 1431 flow, removed 56 selfloop flow, removed 5 redundant places. [2025-02-08 08:18:32,411 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 482 flow [2025-02-08 08:18:32,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=482, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2025-02-08 08:18:32,412 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 18 predicate places. [2025-02-08 08:18:32,412 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 482 flow [2025-02-08 08:18:32,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:18:32,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:18:32,412 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] [2025-02-08 08:18:32,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:18:32,413 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-08 08:18:32,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:18:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash 48991307, now seen corresponding path program 1 times [2025-02-08 08:18:32,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:18:32,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937772020] [2025-02-08 08:18:32,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:18:32,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:18:32,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 08:18:32,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 08:18:32,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:18:32,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:18:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:18:33,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:18:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937772020] [2025-02-08 08:18:33,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937772020] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:18:33,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:18:33,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 08:18:33,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132084758] [2025-02-08 08:18:33,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:18:33,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:18:33,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:18:33,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:18:33,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 08:18:33,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2025-02-08 08:18:33,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:18:33,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:18:33,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2025-02-08 08:18:33,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand