./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/26_stack_cas.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 3df48c747d95355ac505f3aa498934ae4a3962ec64d7e6dbfdd54f02fbeda355 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:36:37,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:36:38,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:36:38,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:36:38,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:36:38,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:36:38,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:36:38,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:36:38,058 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:36:38,059 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:36:38,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:36:38,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:36:38,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:36:38,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:36:38,059 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:36:38,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:36:38,060 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:36:38,061 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:36:38,061 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:36:38,061 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:36:38,061 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:36:38,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:36:38,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:36:38,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:36:38,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:36:38,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:36:38,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:36:38,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:36:38,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:36:38,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:36:38,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:36:38,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:36:38,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:36:38,062 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 -> 3df48c747d95355ac505f3aa498934ae4a3962ec64d7e6dbfdd54f02fbeda355 [2025-02-06 12:36:38,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:36:38,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:36:38,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:36:38,309 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:36:38,310 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:36:38,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas.i [2025-02-06 12:36:39,467 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a99e94e4/134eacd791204b779ddc45fe72ab674b/FLAGfe6bb2b87 [2025-02-06 12:36:39,751 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:36:39,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas.i [2025-02-06 12:36:39,762 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a99e94e4/134eacd791204b779ddc45fe72ab674b/FLAGfe6bb2b87 [2025-02-06 12:36:40,018 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a99e94e4/134eacd791204b779ddc45fe72ab674b [2025-02-06 12:36:40,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:36:40,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:36:40,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:36:40,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:36:40,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:36:40,028 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b0bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40, skipping insertion in model container [2025-02-06 12:36:40,029 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:36:40,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:36:40,281 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:36:40,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:36:40,337 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:36:40,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40 WrapperNode [2025-02-06 12:36:40,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:36:40,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:36:40,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:36:40,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:36:40,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,372 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 247 [2025-02-06 12:36:40,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:36:40,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:36:40,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:36:40,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:36:40,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,391 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [4, 2, 12, 6]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [1, 2, 2, 1]. The 9 writes are split as follows [2, 0, 5, 2]. [2025-02-06 12:36:40,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,396 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,398 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:36:40,401 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:36:40,401 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:36:40,401 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:36:40,402 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (1/1) ... [2025-02-06 12:36:40,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:36:40,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:36:40,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:36:40,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:36:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 12:36:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:36:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 12:36:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 12:36:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:36:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 12:36:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 12:36:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 12:36:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 12:36:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:36:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:36:40,442 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:36:40,536 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:36:40,537 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:36:40,846 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:36:40,847 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:36:41,235 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:36:41,235 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:36:41,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:36:41 BoogieIcfgContainer [2025-02-06 12:36:41,236 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:36:41,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:36:41,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:36:41,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:36:41,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:36:40" (1/3) ... [2025-02-06 12:36:41,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c48d371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:36:41, skipping insertion in model container [2025-02-06 12:36:41,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:36:40" (2/3) ... [2025-02-06 12:36:41,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c48d371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:36:41, skipping insertion in model container [2025-02-06 12:36:41,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:36:41" (3/3) ... [2025-02-06 12:36:41,243 INFO L128 eAbstractionObserver]: Analyzing ICFG 26_stack_cas.i [2025-02-06 12:36:41,255 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:36:41,256 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 26_stack_cas.i that has 2 procedures, 74 locations, 1 initial locations, 3 loop locations, and 40 error locations. [2025-02-06 12:36:41,256 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:36:41,349 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:36:41,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 82 transitions, 168 flow [2025-02-06 12:36:41,443 INFO L124 PetriNetUnfolderBase]: 8/86 cut-off events. [2025-02-06 12:36:41,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:36:41,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 8/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 189 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2025-02-06 12:36:41,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 82 transitions, 168 flow [2025-02-06 12:36:41,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 82 transitions, 168 flow [2025-02-06 12:36:41,453 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:36:41,465 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;@46442d3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:36:41,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2025-02-06 12:36:41,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:36:41,468 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-06 12:36:41,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:36:41,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:41,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:36:41,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2025-02-06 12:36:41,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:41,473 INFO L85 PathProgramCache]: Analyzing trace with hash 756407, now seen corresponding path program 1 times [2025-02-06 12:36:41,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:41,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010989309] [2025-02-06 12:36:41,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:41,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:42,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:36:42,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:36:42,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:42,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:42,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:42,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010989309] [2025-02-06 12:36:42,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010989309] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:42,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:42,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:36:42,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958313952] [2025-02-06 12:36:42,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:42,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 12:36:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:42,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 12:36:42,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:36:42,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 82 [2025-02-06 12:36:42,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 168 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:42,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:42,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 82 [2025-02-06 12:36:42,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:42,300 INFO L124 PetriNetUnfolderBase]: 99/262 cut-off events. [2025-02-06 12:36:42,301 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:36:42,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 262 events. 99/262 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 957 event pairs, 75 based on Foata normal form. 3/173 useless extension candidates. Maximal degree in co-relation 461. Up to 215 conditions per place. [2025-02-06 12:36:42,305 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 46 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2025-02-06 12:36:42,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 226 flow [2025-02-06 12:36:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 12:36:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 12:36:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 101 transitions. [2025-02-06 12:36:42,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2025-02-06 12:36:42,319 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 168 flow. Second operand 2 states and 101 transitions. [2025-02-06 12:36:42,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 226 flow [2025-02-06 12:36:42,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:36:42,325 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 134 flow [2025-02-06 12:36:42,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2025-02-06 12:36:42,329 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -14 predicate places. [2025-02-06 12:36:42,330 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 134 flow [2025-02-06 12:36:42,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:42,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:42,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:36:42,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:36:42,332 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2025-02-06 12:36:42,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:42,332 INFO L85 PathProgramCache]: Analyzing trace with hash 727038985, now seen corresponding path program 1 times [2025-02-06 12:36:42,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:42,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440212006] [2025-02-06 12:36:42,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:42,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:42,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:36:42,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:36:42,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:42,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:42,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:42,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440212006] [2025-02-06 12:36:42,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440212006] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:42,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:42,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:36:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404342717] [2025-02-06 12:36:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:42,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:36:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:42,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:36:42,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:36:42,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 82 [2025-02-06 12:36:42,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:42,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:42,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 82 [2025-02-06 12:36:42,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:42,866 INFO L124 PetriNetUnfolderBase]: 93/248 cut-off events. [2025-02-06 12:36:42,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:36:42,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 248 events. 93/248 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 880 event pairs, 71 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 452. Up to 202 conditions per place. [2025-02-06 12:36:42,870 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 43 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2025-02-06 12:36:42,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 218 flow [2025-02-06 12:36:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:36:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:36:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2025-02-06 12:36:42,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2025-02-06 12:36:42,874 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 134 flow. Second operand 3 states and 106 transitions. [2025-02-06 12:36:42,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 218 flow [2025-02-06 12:36:42,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:36:42,876 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 132 flow [2025-02-06 12:36:42,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2025-02-06 12:36:42,877 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -14 predicate places. [2025-02-06 12:36:42,878 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 132 flow [2025-02-06 12:36:42,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:42,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:42,878 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:36:42,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:36:42,879 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2025-02-06 12:36:42,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:42,880 INFO L85 PathProgramCache]: Analyzing trace with hash 727038984, now seen corresponding path program 1 times [2025-02-06 12:36:42,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:42,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910648634] [2025-02-06 12:36:42,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:42,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:43,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:36:43,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:36:43,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:43,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:43,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:43,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910648634] [2025-02-06 12:36:43,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910648634] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:43,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:43,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:36:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734796358] [2025-02-06 12:36:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:43,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:36:43,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:43,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:36:43,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:36:43,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 82 [2025-02-06 12:36:43,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:43,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:43,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 82 [2025-02-06 12:36:43,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:43,395 INFO L124 PetriNetUnfolderBase]: 149/395 cut-off events. [2025-02-06 12:36:43,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:36:43,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 395 events. 149/395 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1528 event pairs, 57 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 722. Up to 166 conditions per place. [2025-02-06 12:36:43,398 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 69 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2025-02-06 12:36:43,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 332 flow [2025-02-06 12:36:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:36:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:36:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2025-02-06 12:36:43,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5447154471544715 [2025-02-06 12:36:43,399 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 132 flow. Second operand 3 states and 134 transitions. [2025-02-06 12:36:43,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 332 flow [2025-02-06 12:36:43,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:36:43,401 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 144 flow [2025-02-06 12:36:43,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2025-02-06 12:36:43,402 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -14 predicate places. [2025-02-06 12:36:43,402 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 144 flow [2025-02-06 12:36:43,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:43,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:43,402 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 12:36:43,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:36:43,403 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2025-02-06 12:36:43,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:43,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1063294921, now seen corresponding path program 1 times [2025-02-06 12:36:43,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:43,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324851829] [2025-02-06 12:36:43,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:43,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:43,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:36:43,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:36:43,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:43,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 12:36:43,642 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 12:36:43,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:36:43,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:36:43,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:43,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 12:36:43,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 12:36:43,678 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 12:36:43,679 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (79 of 80 remaining) [2025-02-06 12:36:43,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 80 remaining) [2025-02-06 12:36:43,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 80 remaining) [2025-02-06 12:36:43,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 80 remaining) [2025-02-06 12:36:43,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 80 remaining) [2025-02-06 12:36:43,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 80 remaining) [2025-02-06 12:36:43,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONARRAY_INDEX (56 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (53 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (50 of 80 remaining) [2025-02-06 12:36:43,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (39 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 80 remaining) [2025-02-06 12:36:43,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 80 remaining) [2025-02-06 12:36:43,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONARRAY_INDEX (16 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 80 remaining) [2025-02-06 12:36:43,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (10 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 80 remaining) [2025-02-06 12:36:43,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 80 remaining) [2025-02-06 12:36:43,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 80 remaining) [2025-02-06 12:36:43,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 12:36:43,687 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-06 12:36:43,689 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 12:36:43,689 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 12:36:43,753 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:36:43,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 157 transitions, 324 flow [2025-02-06 12:36:43,773 INFO L124 PetriNetUnfolderBase]: 16/166 cut-off events. [2025-02-06 12:36:43,773 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 12:36:43,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 166 events. 16/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 611 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 153. Up to 3 conditions per place. [2025-02-06 12:36:43,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 157 transitions, 324 flow [2025-02-06 12:36:43,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 157 transitions, 324 flow [2025-02-06 12:36:43,778 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:36:43,778 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;@46442d3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:36:43,778 INFO L334 AbstractCegarLoop]: Starting to check reachability of 119 error locations. [2025-02-06 12:36:43,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:36:43,780 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-06 12:36:43,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:36:43,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:43,780 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:36:43,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-02-06 12:36:43,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:43,780 INFO L85 PathProgramCache]: Analyzing trace with hash 912308, now seen corresponding path program 1 times [2025-02-06 12:36:43,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:43,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124376978] [2025-02-06 12:36:43,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:43,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:44,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:36:44,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:36:44,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:44,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:44,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124376978] [2025-02-06 12:36:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124376978] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:44,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:36:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724173041] [2025-02-06 12:36:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:44,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 12:36:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:44,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 12:36:44,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:36:44,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 157 [2025-02-06 12:36:44,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 157 transitions, 324 flow. Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:44,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:44,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 157 [2025-02-06 12:36:44,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:45,300 INFO L124 PetriNetUnfolderBase]: 9422/15582 cut-off events. [2025-02-06 12:36:45,301 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2025-02-06 12:36:45,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29706 conditions, 15582 events. 9422/15582 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 113730 event pairs, 7467 based on Foata normal form. 237/9292 useless extension candidates. Maximal degree in co-relation 22485. Up to 14002 conditions per place. [2025-02-06 12:36:45,381 INFO L140 encePairwiseOnDemand]: 128/157 looper letters, 89 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2025-02-06 12:36:45,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 126 transitions, 440 flow [2025-02-06 12:36:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 12:36:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 12:36:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 194 transitions. [2025-02-06 12:36:45,383 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6178343949044586 [2025-02-06 12:36:45,383 INFO L175 Difference]: Start difference. First operand has 146 places, 157 transitions, 324 flow. Second operand 2 states and 194 transitions. [2025-02-06 12:36:45,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 126 transitions, 440 flow [2025-02-06 12:36:45,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 126 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:36:45,385 INFO L231 Difference]: Finished difference. Result has 120 places, 126 transitions, 262 flow [2025-02-06 12:36:45,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=120, PETRI_TRANSITIONS=126} [2025-02-06 12:36:45,386 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -26 predicate places. [2025-02-06 12:36:45,386 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 126 transitions, 262 flow [2025-02-06 12:36:45,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:45,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:45,387 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:36:45,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 12:36:45,387 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-02-06 12:36:45,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:45,387 INFO L85 PathProgramCache]: Analyzing trace with hash 876938351, now seen corresponding path program 1 times [2025-02-06 12:36:45,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:45,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794313980] [2025-02-06 12:36:45,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:45,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:45,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:36:45,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:36:45,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:45,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:45,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:45,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794313980] [2025-02-06 12:36:45,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794313980] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:45,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:45,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:36:45,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929331778] [2025-02-06 12:36:45,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:45,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:36:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:45,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:36:45,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:36:45,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 157 [2025-02-06 12:36:45,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:45,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:45,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 157 [2025-02-06 12:36:45,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:47,378 INFO L124 PetriNetUnfolderBase]: 15335/25149 cut-off events. [2025-02-06 12:36:47,378 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-02-06 12:36:47,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47988 conditions, 25149 events. 15335/25149 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 192238 event pairs, 5415 based on Foata normal form. 0/15132 useless extension candidates. Maximal degree in co-relation 47983. Up to 13522 conditions per place. [2025-02-06 12:36:47,510 INFO L140 encePairwiseOnDemand]: 148/157 looper letters, 157 selfloop transitions, 5 changer transitions 0/199 dead transitions. [2025-02-06 12:36:47,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 199 transitions, 737 flow [2025-02-06 12:36:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:36:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:36:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2025-02-06 12:36:47,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5944798301486199 [2025-02-06 12:36:47,512 INFO L175 Difference]: Start difference. First operand has 120 places, 126 transitions, 262 flow. Second operand 3 states and 280 transitions. [2025-02-06 12:36:47,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 199 transitions, 737 flow [2025-02-06 12:36:47,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 737 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:36:47,515 INFO L231 Difference]: Finished difference. Result has 123 places, 130 transitions, 301 flow [2025-02-06 12:36:47,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=123, PETRI_TRANSITIONS=130} [2025-02-06 12:36:47,515 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -23 predicate places. [2025-02-06 12:36:47,516 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 130 transitions, 301 flow [2025-02-06 12:36:47,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:47,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:47,516 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 12:36:47,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 12:36:47,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-02-06 12:36:47,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:47,517 INFO L85 PathProgramCache]: Analyzing trace with hash 876938352, now seen corresponding path program 1 times [2025-02-06 12:36:47,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:47,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640597473] [2025-02-06 12:36:47,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:47,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:47,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 12:36:47,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 12:36:47,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:47,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640597473] [2025-02-06 12:36:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640597473] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:47,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:36:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506479094] [2025-02-06 12:36:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:47,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:36:47,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:47,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:36:47,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:36:47,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 157 [2025-02-06 12:36:47,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 130 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:47,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:47,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 157 [2025-02-06 12:36:47,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:49,032 INFO L124 PetriNetUnfolderBase]: 13548/22515 cut-off events. [2025-02-06 12:36:49,032 INFO L125 PetriNetUnfolderBase]: For 1317/1317 co-relation queries the response was YES. [2025-02-06 12:36:49,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44655 conditions, 22515 events. 13548/22515 cut-off events. For 1317/1317 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 171654 event pairs, 10880 based on Foata normal form. 0/14850 useless extension candidates. Maximal degree in co-relation 44648. Up to 20228 conditions per place. [2025-02-06 12:36:49,122 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 88 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2025-02-06 12:36:49,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 126 transitions, 471 flow [2025-02-06 12:36:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:36:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:36:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2025-02-06 12:36:49,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4309978768577495 [2025-02-06 12:36:49,124 INFO L175 Difference]: Start difference. First operand has 123 places, 130 transitions, 301 flow. Second operand 3 states and 203 transitions. [2025-02-06 12:36:49,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 126 transitions, 471 flow [2025-02-06 12:36:49,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 126 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:36:49,126 INFO L231 Difference]: Finished difference. Result has 120 places, 126 transitions, 290 flow [2025-02-06 12:36:49,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=120, PETRI_TRANSITIONS=126} [2025-02-06 12:36:49,127 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -26 predicate places. [2025-02-06 12:36:49,127 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 126 transitions, 290 flow [2025-02-06 12:36:49,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:49,127 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:49,127 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:36:49,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 12:36:49,128 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-02-06 12:36:49,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1414540687, now seen corresponding path program 1 times [2025-02-06 12:36:49,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:49,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545417174] [2025-02-06 12:36:49,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:49,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:49,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:36:49,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:36:49,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:49,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:49,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:49,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545417174] [2025-02-06 12:36:49,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545417174] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:49,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:49,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:36:49,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926972877] [2025-02-06 12:36:49,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:49,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:36:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:49,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:36:49,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:36:49,347 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 157 [2025-02-06 12:36:49,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:49,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:49,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 157 [2025-02-06 12:36:49,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:50,826 INFO L124 PetriNetUnfolderBase]: 13292/21944 cut-off events. [2025-02-06 12:36:50,826 INFO L125 PetriNetUnfolderBase]: For 1290/1302 co-relation queries the response was YES. [2025-02-06 12:36:50,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43199 conditions, 21944 events. 13292/21944 cut-off events. For 1290/1302 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 164542 event pairs, 4615 based on Foata normal form. 12/14741 useless extension candidates. Maximal degree in co-relation 43192. Up to 12796 conditions per place. [2025-02-06 12:36:50,964 INFO L140 encePairwiseOnDemand]: 146/157 looper letters, 147 selfloop transitions, 5 changer transitions 0/187 dead transitions. [2025-02-06 12:36:50,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 187 transitions, 721 flow [2025-02-06 12:36:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:36:50,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:36:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2025-02-06 12:36:50,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.564755838641189 [2025-02-06 12:36:50,965 INFO L175 Difference]: Start difference. First operand has 120 places, 126 transitions, 290 flow. Second operand 3 states and 266 transitions. [2025-02-06 12:36:50,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 187 transitions, 721 flow [2025-02-06 12:36:50,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 187 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:36:50,969 INFO L231 Difference]: Finished difference. Result has 122 places, 126 transitions, 316 flow [2025-02-06 12:36:50,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=122, PETRI_TRANSITIONS=126} [2025-02-06 12:36:50,969 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -24 predicate places. [2025-02-06 12:36:50,969 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 126 transitions, 316 flow [2025-02-06 12:36:50,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:50,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:50,970 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:36:50,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 12:36:50,970 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-02-06 12:36:50,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:50,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1414540686, now seen corresponding path program 1 times [2025-02-06 12:36:50,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:50,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760158207] [2025-02-06 12:36:50,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:50,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:51,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 12:36:51,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 12:36:51,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:51,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:51,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:51,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760158207] [2025-02-06 12:36:51,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760158207] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:51,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:51,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:36:51,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473676949] [2025-02-06 12:36:51,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:51,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:36:51,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:51,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:36:51,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:36:51,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 157 [2025-02-06 12:36:51,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:51,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:51,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 157 [2025-02-06 12:36:51,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:52,429 INFO L124 PetriNetUnfolderBase]: 11123/18617 cut-off events. [2025-02-06 12:36:52,429 INFO L125 PetriNetUnfolderBase]: For 1929/1929 co-relation queries the response was YES. [2025-02-06 12:36:52,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37561 conditions, 18617 events. 11123/18617 cut-off events. For 1929/1929 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 139015 event pairs, 8719 based on Foata normal form. 0/13370 useless extension candidates. Maximal degree in co-relation 37553. Up to 16474 conditions per place. [2025-02-06 12:36:52,505 INFO L140 encePairwiseOnDemand]: 148/157 looper letters, 82 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2025-02-06 12:36:52,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 118 transitions, 466 flow [2025-02-06 12:36:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:36:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:36:52,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2025-02-06 12:36:52,508 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4140127388535032 [2025-02-06 12:36:52,508 INFO L175 Difference]: Start difference. First operand has 122 places, 126 transitions, 316 flow. Second operand 3 states and 195 transitions. [2025-02-06 12:36:52,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 118 transitions, 466 flow [2025-02-06 12:36:52,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 118 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:36:52,514 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 292 flow [2025-02-06 12:36:52,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2025-02-06 12:36:52,516 INFO L279 CegarLoopForPetriNet]: 146 programPoint places, -32 predicate places. [2025-02-06 12:36:52,516 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 292 flow [2025-02-06 12:36:52,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:52,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:52,516 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-02-06 12:36:52,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 12:36:52,516 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 116 more)] === [2025-02-06 12:36:52,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1116516532, now seen corresponding path program 1 times [2025-02-06 12:36:52,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:52,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307381956] [2025-02-06 12:36:52,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:52,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:36:52,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:36:52,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:52,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 12:36:52,680 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 12:36:52,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:36:52,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:36:52,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:52,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 12:36:52,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 12:36:52,697 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 12:36:52,698 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (118 of 119 remaining) [2025-02-06 12:36:52,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 119 remaining) [2025-02-06 12:36:52,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 119 remaining) [2025-02-06 12:36:52,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 119 remaining) [2025-02-06 12:36:52,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 119 remaining) [2025-02-06 12:36:52,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 119 remaining) [2025-02-06 12:36:52,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 119 remaining) [2025-02-06 12:36:52,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 119 remaining) [2025-02-06 12:36:52,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONARRAY_INDEX (95 of 119 remaining) [2025-02-06 12:36:52,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (92 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (89 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 119 remaining) [2025-02-06 12:36:52,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (78 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 119 remaining) [2025-02-06 12:36:52,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONARRAY_INDEX (55 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (52 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 119 remaining) [2025-02-06 12:36:52,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (49 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 119 remaining) [2025-02-06 12:36:52,703 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 119 remaining) [2025-02-06 12:36:52,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 119 remaining) [2025-02-06 12:36:52,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 119 remaining) [2025-02-06 12:36:52,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 119 remaining) [2025-02-06 12:36:52,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 119 remaining) [2025-02-06 12:36:52,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 119 remaining) [2025-02-06 12:36:52,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONARRAY_INDEX (16 of 119 remaining) [2025-02-06 12:36:52,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 119 remaining) [2025-02-06 12:36:52,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 119 remaining) [2025-02-06 12:36:52,705 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (10 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 119 remaining) [2025-02-06 12:36:52,706 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 119 remaining) [2025-02-06 12:36:52,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 12:36:52,706 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-02-06 12:36:52,706 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 12:36:52,706 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 12:36:52,779 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:36:52,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 232 transitions, 482 flow [2025-02-06 12:36:52,802 INFO L124 PetriNetUnfolderBase]: 24/246 cut-off events. [2025-02-06 12:36:52,802 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 12:36:52,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 246 events. 24/246 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1128 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 227. Up to 4 conditions per place. [2025-02-06 12:36:52,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 232 transitions, 482 flow [2025-02-06 12:36:52,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 232 transitions, 482 flow [2025-02-06 12:36:52,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:36:52,809 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;@46442d3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:36:52,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 158 error locations. [2025-02-06 12:36:52,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:36:52,811 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-02-06 12:36:52,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:36:52,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:52,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 12:36:52,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err38REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2025-02-06 12:36:52,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:52,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1142684, now seen corresponding path program 1 times [2025-02-06 12:36:52,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:52,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696735462] [2025-02-06 12:36:52,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:36:52,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:52,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 12:36:52,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 12:36:52,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:36:52,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:52,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:52,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696735462] [2025-02-06 12:36:52,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696735462] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:36:52,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:36:52,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:36:52,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867895169] [2025-02-06 12:36:52,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:36:52,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 12:36:52,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:52,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 12:36:52,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 12:36:52,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 232 [2025-02-06 12:36:52,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 232 transitions, 482 flow. Second operand has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:52,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:52,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 232 [2025-02-06 12:36:52,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand