./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:44:22,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:44:22,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:44:22,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:44:22,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:44:22,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:44:22,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:44:22,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:44:22,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:44:22,088 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:44:22,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:44:22,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:44:22,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:44:22,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:44:22,088 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:44:22,088 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:44:22,089 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:44:22,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:44:22,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:44:22,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:44:22,090 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 [2025-03-04 09:44:22,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:44:22,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:44:22,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:44:22,313 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:44:22,313 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:44:22,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-03-04 09:44:23,458 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/446e7d865/5da30997c0bb433789eea31c4663c4e2/FLAG1bdf386e2 [2025-03-04 09:44:23,739 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:44:23,740 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-03-04 09:44:23,757 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/446e7d865/5da30997c0bb433789eea31c4663c4e2/FLAG1bdf386e2 [2025-03-04 09:44:24,044 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/446e7d865/5da30997c0bb433789eea31c4663c4e2 [2025-03-04 09:44:24,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:44:24,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:44:24,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:44:24,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:44:24,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:44:24,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767e7f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24, skipping insertion in model container [2025-03-04 09:44:24,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:44:24,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:44:24,322 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:44:24,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:44:24,395 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:44:24,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24 WrapperNode [2025-03-04 09:44:24,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:44:24,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:44:24,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:44:24,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:44:24,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,428 INFO L138 Inliner]: procedures = 174, calls = 46, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 159 [2025-03-04 09:44:24,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:44:24,431 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:44:24,431 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:44:24,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:44:24,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,457 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 9, 6, 6]. 39 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 1, 2, 0]. The 8 writes are split as follows [0, 2, 2, 4]. [2025-03-04 09:44:24,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,465 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:44:24,475 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:44:24,475 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:44:24,475 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:44:24,479 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (1/1) ... [2025-03-04 09:44:24,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:44:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:44:24,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:44:24,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:44:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 09:44:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 09:44:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 09:44:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 09:44:24,523 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-04 09:44:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-04 09:44:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 09:44:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 09:44:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 09:44:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 09:44:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 09:44:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:44:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:44:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:44:24,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:44:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 09:44:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 09:44:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 09:44:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 09:44:24,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:44:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:44:24,526 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:44:24,628 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:44:24,629 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:44:24,900 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: havoc dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset; [2025-03-04 09:44:24,900 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L731-1: SUMMARY for call ULTIMATE.dealloc(dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset); srcloc: null [2025-03-04 09:44:24,900 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L711: havoc inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset; [2025-03-04 09:44:24,901 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L711-1: SUMMARY for call ULTIMATE.dealloc(inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset); srcloc: null [2025-03-04 09:44:24,928 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:44:24,928 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:44:25,150 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:44:25,150 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:44:25,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:44:25 BoogieIcfgContainer [2025-03-04 09:44:25,151 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:44:25,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:44:25,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:44:25,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:44:25,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:44:24" (1/3) ... [2025-03-04 09:44:25,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be0770a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:44:25, skipping insertion in model container [2025-03-04 09:44:25,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:44:24" (2/3) ... [2025-03-04 09:44:25,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be0770a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:44:25, skipping insertion in model container [2025-03-04 09:44:25,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:44:25" (3/3) ... [2025-03-04 09:44:25,159 INFO L128 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2025-03-04 09:44:25,170 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:44:25,172 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04_incdec_cas.i that has 2 procedures, 65 locations, 1 initial locations, 3 loop locations, and 39 error locations. [2025-03-04 09:44:25,172 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:44:25,270 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:44:25,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 74 transitions, 152 flow [2025-03-04 09:44:25,336 INFO L124 PetriNetUnfolderBase]: 9/78 cut-off events. [2025-03-04 09:44:25,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:44:25,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 9/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 388 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2025-03-04 09:44:25,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 74 transitions, 152 flow [2025-03-04 09:44:25,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 74 transitions, 152 flow [2025-03-04 09:44:25,351 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:44:25,358 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;@3c4456b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:44:25,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2025-03-04 09:44:25,365 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:44:25,365 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-04 09:44:25,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:44:25,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:25,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:44:25,366 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-03-04 09:44:25,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:25,370 INFO L85 PathProgramCache]: Analyzing trace with hash 522387, now seen corresponding path program 1 times [2025-03-04 09:44:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:25,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964226841] [2025-03-04 09:44:25,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:25,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:25,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:44:25,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:44:25,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:25,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:25,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964226841] [2025-03-04 09:44:25,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964226841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:25,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:25,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:44:25,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613204126] [2025-03-04 09:44:25,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:25,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:44:25,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:25,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:44:25,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:44:25,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 74 [2025-03-04 09:44:25,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 152 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:25,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:25,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 74 [2025-03-04 09:44:25,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:25,699 INFO L124 PetriNetUnfolderBase]: 115/281 cut-off events. [2025-03-04 09:44:25,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:44:25,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 281 events. 115/281 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1356 event pairs, 94 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 534. Up to 262 conditions per place. [2025-03-04 09:44:25,705 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 58 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2025-03-04 09:44:25,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 250 flow [2025-03-04 09:44:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 09:44:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 09:44:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 81 transitions. [2025-03-04 09:44:25,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2025-03-04 09:44:25,717 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 152 flow. Second operand 2 states and 81 transitions. [2025-03-04 09:44:25,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 250 flow [2025-03-04 09:44:25,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:44:25,723 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 134 flow [2025-03-04 09:44:25,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=62, PETRI_TRANSITIONS=65} [2025-03-04 09:44:25,728 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2025-03-04 09:44:25,729 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 134 flow [2025-03-04 09:44:25,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:25,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:25,730 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 09:44:25,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:44:25,730 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-03-04 09:44:25,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1611991351, now seen corresponding path program 1 times [2025-03-04 09:44:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:25,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519799538] [2025-03-04 09:44:25,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:25,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:25,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:44:25,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:44:25,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:25,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:44:25,752 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:44:25,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:44:25,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:44:25,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:25,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:44:25,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 09:44:25,791 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:44:25,792 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (77 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (68 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (63 of 78 remaining) [2025-03-04 09:44:25,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 78 remaining) [2025-03-04 09:44:25,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 78 remaining) [2025-03-04 09:44:25,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 78 remaining) [2025-03-04 09:44:25,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 78 remaining) [2025-03-04 09:44:25,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 78 remaining) [2025-03-04 09:44:25,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 78 remaining) [2025-03-04 09:44:25,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 78 remaining) [2025-03-04 09:44:25,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 78 remaining) [2025-03-04 09:44:25,795 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (29 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (24 of 78 remaining) [2025-03-04 09:44:25,796 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 78 remaining) [2025-03-04 09:44:25,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 78 remaining) [2025-03-04 09:44:25,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:44:25,798 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 09:44:25,801 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 09:44:25,801 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 09:44:25,907 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:44:25,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 141 transitions, 292 flow [2025-03-04 09:44:25,944 INFO L124 PetriNetUnfolderBase]: 18/150 cut-off events. [2025-03-04 09:44:25,948 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 09:44:25,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 150 events. 18/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 905 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 137. Up to 3 conditions per place. [2025-03-04 09:44:25,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 141 transitions, 292 flow [2025-03-04 09:44:25,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 141 transitions, 292 flow [2025-03-04 09:44:25,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:44:25,953 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;@3c4456b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:44:25,953 INFO L334 AbstractCegarLoop]: Starting to check reachability of 116 error locations. [2025-03-04 09:44:25,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:44:25,956 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-04 09:44:25,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:44:25,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:25,956 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:44:25,956 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-04 09:44:25,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash 662400, now seen corresponding path program 1 times [2025-03-04 09:44:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154420062] [2025-03-04 09:44:25,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:25,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:25,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:44:25,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:44:25,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:25,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:25,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:25,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154420062] [2025-03-04 09:44:25,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154420062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:25,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:25,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:44:25,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884148102] [2025-03-04 09:44:25,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:25,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:44:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:25,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:44:25,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:44:25,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-04 09:44:25,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 141 transitions, 292 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:25,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:25,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-04 09:44:25,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:27,789 INFO L124 PetriNetUnfolderBase]: 13411/21211 cut-off events. [2025-03-04 09:44:27,789 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-03-04 09:44:27,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41830 conditions, 21211 events. 13411/21211 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 152044 event pairs, 11374 based on Foata normal form. 0/9844 useless extension candidates. Maximal degree in co-relation 20232. Up to 20470 conditions per place. [2025-03-04 09:44:27,894 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 113 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2025-03-04 09:44:27,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 126 transitions, 488 flow [2025-03-04 09:44:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 09:44:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 09:44:27,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 154 transitions. [2025-03-04 09:44:27,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2025-03-04 09:44:27,895 INFO L175 Difference]: Start difference. First operand has 128 places, 141 transitions, 292 flow. Second operand 2 states and 154 transitions. [2025-03-04 09:44:27,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 126 transitions, 488 flow [2025-03-04 09:44:27,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 126 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:44:27,898 INFO L231 Difference]: Finished difference. Result has 118 places, 126 transitions, 262 flow [2025-03-04 09:44:27,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=117, 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=118, PETRI_TRANSITIONS=126} [2025-03-04 09:44:27,898 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2025-03-04 09:44:27,898 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 126 transitions, 262 flow [2025-03-04 09:44:27,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:27,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:27,899 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 09:44:27,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:44:27,899 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-04 09:44:27,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1733656538, now seen corresponding path program 1 times [2025-03-04 09:44:27,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:27,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329686776] [2025-03-04 09:44:27,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:27,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:27,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:44:27,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:44:27,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:27,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:28,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329686776] [2025-03-04 09:44:28,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329686776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:28,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:28,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:44:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489571776] [2025-03-04 09:44:28,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:28,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:44:28,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:28,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:44:28,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:44:28,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-04 09:44:28,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:28,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:28,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-04 09:44:28,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:29,716 INFO L124 PetriNetUnfolderBase]: 12049/19219 cut-off events. [2025-03-04 09:44:29,716 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2025-03-04 09:44:29,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37829 conditions, 19219 events. 12049/19219 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 139424 event pairs, 7200 based on Foata normal form. 0/9874 useless extension candidates. Maximal degree in co-relation 37824. Up to 12476 conditions per place. [2025-03-04 09:44:29,808 INFO L140 encePairwiseOnDemand]: 80/141 looper letters, 241 selfloop transitions, 57 changer transitions 0/311 dead transitions. [2025-03-04 09:44:29,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 311 transitions, 1233 flow [2025-03-04 09:44:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:44:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 09:44:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2025-03-04 09:44:29,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2025-03-04 09:44:29,811 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 262 flow. Second operand 4 states and 378 transitions. [2025-03-04 09:44:29,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 311 transitions, 1233 flow [2025-03-04 09:44:29,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 311 transitions, 1233 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:44:29,821 INFO L231 Difference]: Finished difference. Result has 124 places, 182 transitions, 746 flow [2025-03-04 09:44:29,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=746, PETRI_PLACES=124, PETRI_TRANSITIONS=182} [2025-03-04 09:44:29,822 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -4 predicate places. [2025-03-04 09:44:29,823 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 182 transitions, 746 flow [2025-03-04 09:44:29,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:29,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:29,823 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 09:44:29,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:44:29,823 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-04 09:44:29,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1733656537, now seen corresponding path program 1 times [2025-03-04 09:44:29,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:29,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254860218] [2025-03-04 09:44:29,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:29,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:29,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 09:44:29,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 09:44:29,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:29,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:29,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:29,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254860218] [2025-03-04 09:44:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254860218] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:29,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:44:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091134564] [2025-03-04 09:44:29,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:29,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:44:29,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:29,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:44:29,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:44:30,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-04 09:44:30,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 182 transitions, 746 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:30,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:30,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-04 09:44:30,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:31,329 INFO L124 PetriNetUnfolderBase]: 9271/14803 cut-off events. [2025-03-04 09:44:31,329 INFO L125 PetriNetUnfolderBase]: For 2040/2040 co-relation queries the response was YES. [2025-03-04 09:44:31,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36532 conditions, 14803 events. 9271/14803 cut-off events. For 2040/2040 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 103756 event pairs, 5478 based on Foata normal form. 972/10192 useless extension candidates. Maximal degree in co-relation 36524. Up to 8972 conditions per place. [2025-03-04 09:44:31,376 INFO L140 encePairwiseOnDemand]: 120/141 looper letters, 221 selfloop transitions, 9 changer transitions 0/243 dead transitions. [2025-03-04 09:44:31,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 243 transitions, 1413 flow [2025-03-04 09:44:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:44:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 09:44:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2025-03-04 09:44:31,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2025-03-04 09:44:31,378 INFO L175 Difference]: Start difference. First operand has 124 places, 182 transitions, 746 flow. Second operand 4 states and 262 transitions. [2025-03-04 09:44:31,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 243 transitions, 1413 flow [2025-03-04 09:44:31,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 243 transitions, 1413 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:44:31,390 INFO L231 Difference]: Finished difference. Result has 115 places, 170 transitions, 740 flow [2025-03-04 09:44:31,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=740, PETRI_PLACES=115, PETRI_TRANSITIONS=170} [2025-03-04 09:44:31,391 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -13 predicate places. [2025-03-04 09:44:31,391 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 170 transitions, 740 flow [2025-03-04 09:44:31,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:31,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:31,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:31,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:44:31,392 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-04 09:44:31,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:31,392 INFO L85 PathProgramCache]: Analyzing trace with hash 403403192, now seen corresponding path program 1 times [2025-03-04 09:44:31,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:31,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30531291] [2025-03-04 09:44:31,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:31,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:31,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:44:31,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:44:31,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:31,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:31,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:31,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30531291] [2025-03-04 09:44:31,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30531291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:31,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:31,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:44:31,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315794277] [2025-03-04 09:44:31,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:31,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:44:31,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:31,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:44:31,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:44:31,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-04 09:44:31,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 170 transitions, 740 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:31,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:31,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-04 09:44:31,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:33,217 INFO L124 PetriNetUnfolderBase]: 15093/23940 cut-off events. [2025-03-04 09:44:33,217 INFO L125 PetriNetUnfolderBase]: For 5988/5988 co-relation queries the response was YES. [2025-03-04 09:44:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60565 conditions, 23940 events. 15093/23940 cut-off events. For 5988/5988 co-relation queries the response was YES. Maximal size of possible extension queue 1348. Compared 176916 event pairs, 4626 based on Foata normal form. 213/15435 useless extension candidates. Maximal degree in co-relation 60556. Up to 14584 conditions per place. [2025-03-04 09:44:33,328 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 405 selfloop transitions, 35 changer transitions 0/453 dead transitions. [2025-03-04 09:44:33,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 453 transitions, 2898 flow [2025-03-04 09:44:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:44:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 09:44:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2025-03-04 09:44:33,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2025-03-04 09:44:33,330 INFO L175 Difference]: Start difference. First operand has 115 places, 170 transitions, 740 flow. Second operand 5 states and 354 transitions. [2025-03-04 09:44:33,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 453 transitions, 2898 flow [2025-03-04 09:44:33,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 453 transitions, 2872 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:44:33,361 INFO L231 Difference]: Finished difference. Result has 120 places, 204 transitions, 1084 flow [2025-03-04 09:44:33,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1084, PETRI_PLACES=120, PETRI_TRANSITIONS=204} [2025-03-04 09:44:33,364 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -8 predicate places. [2025-03-04 09:44:33,365 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 204 transitions, 1084 flow [2025-03-04 09:44:33,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:33,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:33,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:33,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 09:44:33,369 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-04 09:44:33,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash 403437092, now seen corresponding path program 1 times [2025-03-04 09:44:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:33,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649741036] [2025-03-04 09:44:33,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:33,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:33,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:44:33,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:44:33,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:33,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:33,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:33,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649741036] [2025-03-04 09:44:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649741036] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:33,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:33,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:44:33,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429227895] [2025-03-04 09:44:33,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:33,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:44:33,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:33,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:44:33,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:44:33,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 141 [2025-03-04 09:44:33,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 204 transitions, 1084 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:33,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:33,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 141 [2025-03-04 09:44:33,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:35,621 INFO L124 PetriNetUnfolderBase]: 15486/24289 cut-off events. [2025-03-04 09:44:35,621 INFO L125 PetriNetUnfolderBase]: For 6682/6682 co-relation queries the response was YES. [2025-03-04 09:44:35,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66338 conditions, 24289 events. 15486/24289 cut-off events. For 6682/6682 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 178767 event pairs, 5802 based on Foata normal form. 0/16864 useless extension candidates. Maximal degree in co-relation 66326. Up to 14505 conditions per place. [2025-03-04 09:44:35,734 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 248 selfloop transitions, 17 changer transitions 0/276 dead transitions. [2025-03-04 09:44:35,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 276 transitions, 1925 flow [2025-03-04 09:44:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:44:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:44:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2025-03-04 09:44:35,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2025-03-04 09:44:35,736 INFO L175 Difference]: Start difference. First operand has 120 places, 204 transitions, 1084 flow. Second operand 3 states and 206 transitions. [2025-03-04 09:44:35,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 276 transitions, 1925 flow [2025-03-04 09:44:35,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 276 transitions, 1925 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 09:44:35,769 INFO L231 Difference]: Finished difference. Result has 124 places, 214 transitions, 1237 flow [2025-03-04 09:44:35,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1237, PETRI_PLACES=124, PETRI_TRANSITIONS=214} [2025-03-04 09:44:35,770 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -4 predicate places. [2025-03-04 09:44:35,770 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 214 transitions, 1237 flow [2025-03-04 09:44:35,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:35,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:35,770 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:35,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 09:44:35,771 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-04 09:44:35,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:35,771 INFO L85 PathProgramCache]: Analyzing trace with hash 403437087, now seen corresponding path program 1 times [2025-03-04 09:44:35,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:35,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41641525] [2025-03-04 09:44:35,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:35,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:35,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:44:35,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:44:35,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:35,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:35,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41641525] [2025-03-04 09:44:35,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41641525] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:35,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:35,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:44:35,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574684883] [2025-03-04 09:44:35,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:35,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:44:35,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:35,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:44:35,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:44:35,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 141 [2025-03-04 09:44:35,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 214 transitions, 1237 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:35,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:35,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 141 [2025-03-04 09:44:35,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:37,257 INFO L124 PetriNetUnfolderBase]: 14228/22392 cut-off events. [2025-03-04 09:44:37,257 INFO L125 PetriNetUnfolderBase]: For 12692/12692 co-relation queries the response was YES. [2025-03-04 09:44:37,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64058 conditions, 22392 events. 14228/22392 cut-off events. For 12692/12692 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 163301 event pairs, 5736 based on Foata normal form. 468/16785 useless extension candidates. Maximal degree in co-relation 64044. Up to 12714 conditions per place. [2025-03-04 09:44:37,361 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 232 selfloop transitions, 9 changer transitions 0/254 dead transitions. [2025-03-04 09:44:37,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 254 transitions, 1870 flow [2025-03-04 09:44:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:44:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:44:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2025-03-04 09:44:37,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4397163120567376 [2025-03-04 09:44:37,363 INFO L175 Difference]: Start difference. First operand has 124 places, 214 transitions, 1237 flow. Second operand 3 states and 186 transitions. [2025-03-04 09:44:37,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 254 transitions, 1870 flow [2025-03-04 09:44:37,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 254 transitions, 1836 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:44:37,405 INFO L231 Difference]: Finished difference. Result has 121 places, 207 transitions, 1179 flow [2025-03-04 09:44:37,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1179, PETRI_PLACES=121, PETRI_TRANSITIONS=207} [2025-03-04 09:44:37,406 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -7 predicate places. [2025-03-04 09:44:37,406 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 207 transitions, 1179 flow [2025-03-04 09:44:37,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:37,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:37,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:37,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 09:44:37,407 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-04 09:44:37,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:37,407 INFO L85 PathProgramCache]: Analyzing trace with hash 403437088, now seen corresponding path program 1 times [2025-03-04 09:44:37,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:37,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489755423] [2025-03-04 09:44:37,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:37,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:37,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:44:37,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:44:37,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:37,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:37,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489755423] [2025-03-04 09:44:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489755423] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:37,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:44:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588841884] [2025-03-04 09:44:37,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:37,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:44:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:37,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:44:37,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:44:37,519 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-04 09:44:37,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 207 transitions, 1179 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:37,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:37,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-04 09:44:37,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:38,890 INFO L124 PetriNetUnfolderBase]: 13202/20846 cut-off events. [2025-03-04 09:44:38,890 INFO L125 PetriNetUnfolderBase]: For 11383/11419 co-relation queries the response was YES. [2025-03-04 09:44:38,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59269 conditions, 20846 events. 13202/20846 cut-off events. For 11383/11419 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 149444 event pairs, 6028 based on Foata normal form. 0/15305 useless extension candidates. Maximal degree in co-relation 59255. Up to 10011 conditions per place. [2025-03-04 09:44:39,019 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 259 selfloop transitions, 13 changer transitions 0/285 dead transitions. [2025-03-04 09:44:39,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 285 transitions, 2065 flow [2025-03-04 09:44:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:44:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:44:39,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2025-03-04 09:44:39,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2025-03-04 09:44:39,020 INFO L175 Difference]: Start difference. First operand has 121 places, 207 transitions, 1179 flow. Second operand 3 states and 218 transitions. [2025-03-04 09:44:39,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 285 transitions, 2065 flow [2025-03-04 09:44:39,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 285 transitions, 2045 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:44:39,062 INFO L231 Difference]: Finished difference. Result has 122 places, 207 transitions, 1208 flow [2025-03-04 09:44:39,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1208, PETRI_PLACES=122, PETRI_TRANSITIONS=207} [2025-03-04 09:44:39,062 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -6 predicate places. [2025-03-04 09:44:39,062 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 207 transitions, 1208 flow [2025-03-04 09:44:39,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:39,063 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:39,063 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:39,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 09:44:39,063 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-04 09:44:39,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash 403437089, now seen corresponding path program 1 times [2025-03-04 09:44:39,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:39,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764676917] [2025-03-04 09:44:39,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:39,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:39,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:44:39,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:44:39,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:39,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:39,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:39,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764676917] [2025-03-04 09:44:39,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764676917] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:39,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:39,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 09:44:39,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015822156] [2025-03-04 09:44:39,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:39,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:44:39,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:39,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:44:39,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:44:39,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-04 09:44:39,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 207 transitions, 1208 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:39,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:39,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-04 09:44:39,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:44:40,419 INFO L124 PetriNetUnfolderBase]: 11966/18866 cut-off events. [2025-03-04 09:44:40,420 INFO L125 PetriNetUnfolderBase]: For 12302/12338 co-relation queries the response was YES. [2025-03-04 09:44:40,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55743 conditions, 18866 events. 11966/18866 cut-off events. For 12302/12338 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 133103 event pairs, 7766 based on Foata normal form. 210/14396 useless extension candidates. Maximal degree in co-relation 55728. Up to 18028 conditions per place. [2025-03-04 09:44:40,507 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 187 selfloop transitions, 1 changer transitions 0/201 dead transitions. [2025-03-04 09:44:40,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 201 transitions, 1560 flow [2025-03-04 09:44:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:44:40,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:44:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2025-03-04 09:44:40,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2025-03-04 09:44:40,509 INFO L175 Difference]: Start difference. First operand has 122 places, 207 transitions, 1208 flow. Second operand 3 states and 141 transitions. [2025-03-04 09:44:40,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 201 transitions, 1560 flow [2025-03-04 09:44:40,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 201 transitions, 1534 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 09:44:40,535 INFO L231 Difference]: Finished difference. Result has 118 places, 201 transitions, 1160 flow [2025-03-04 09:44:40,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1160, PETRI_PLACES=118, PETRI_TRANSITIONS=201} [2025-03-04 09:44:40,536 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2025-03-04 09:44:40,536 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 201 transitions, 1160 flow [2025-03-04 09:44:40,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:44:40,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:40,536 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-04 09:44:40,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 09:44:40,536 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-04 09:44:40,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1873574278, now seen corresponding path program 1 times [2025-03-04 09:44:40,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:40,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127524652] [2025-03-04 09:44:40,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:40,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:44:40,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:44:40,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:40,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:44:40,543 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:44:40,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 09:44:40,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 09:44:40,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:40,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:44:40,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 09:44:40,550 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:44:40,550 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (115 of 116 remaining) [2025-03-04 09:44:40,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 116 remaining) [2025-03-04 09:44:40,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 116 remaining) [2025-03-04 09:44:40,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (106 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (101 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 116 remaining) [2025-03-04 09:44:40,551 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 116 remaining) [2025-03-04 09:44:40,552 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (76 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 116 remaining) [2025-03-04 09:44:40,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (67 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (62 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 116 remaining) [2025-03-04 09:44:40,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 116 remaining) [2025-03-04 09:44:40,555 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (29 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 116 remaining) [2025-03-04 09:44:40,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (24 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 116 remaining) [2025-03-04 09:44:40,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 116 remaining) [2025-03-04 09:44:40,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 116 remaining) [2025-03-04 09:44:40,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 09:44:40,558 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:44:40,559 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 09:44:40,559 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-04 09:44:40,696 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 09:44:40,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 208 transitions, 434 flow [2025-03-04 09:44:40,733 INFO L124 PetriNetUnfolderBase]: 27/222 cut-off events. [2025-03-04 09:44:40,733 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-04 09:44:40,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 222 events. 27/222 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1410 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 203. Up to 4 conditions per place. [2025-03-04 09:44:40,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 208 transitions, 434 flow [2025-03-04 09:44:40,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 208 transitions, 434 flow [2025-03-04 09:44:40,742 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:44:40,742 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;@3c4456b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:44:40,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 154 error locations. [2025-03-04 09:44:40,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:44:40,745 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-04 09:44:40,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 09:44:40,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:44:40,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 09:44:40,745 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 151 more)] === [2025-03-04 09:44:40,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:44:40,745 INFO L85 PathProgramCache]: Analyzing trace with hash 868944, now seen corresponding path program 1 times [2025-03-04 09:44:40,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:44:40,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210746456] [2025-03-04 09:44:40,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:44:40,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:44:40,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:44:40,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:44:40,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:44:40,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:44:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:44:40,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:44:40,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210746456] [2025-03-04 09:44:40,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210746456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:44:40,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:44:40,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:44:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462410945] [2025-03-04 09:44:40,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:44:40,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:44:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:44:40,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:44:40,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:44:40,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 208 [2025-03-04 09:44:40,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 208 transitions, 434 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) [2025-03-04 09:44:40,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:44:40,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 208 [2025-03-04 09:44:40,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand