./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-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-?-8fc3dc6-m [2025-03-17 14:00:47,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:00:47,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:00:47,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:00:47,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:00:47,660 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:00:47,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:00:47,661 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:00:47,661 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:00:47,661 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:00:47,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:00:47,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:00:47,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:00:47,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:00:47,662 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:00:47,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:00:47,662 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:00:47,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:00:47,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:00:47,663 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:00:47,663 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:00:47,664 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:00:47,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:00:47,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:00:47,665 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 [2025-03-17 14:00:47,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:00:47,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:00:47,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:00:47,907 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:00:47,907 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:00:47,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-03-17 14:00:49,060 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73f05d92c/07234f14bff5469cab1976d482533066/FLAG8a79ce02f [2025-03-17 14:00:49,286 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:00:49,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-03-17 14:00:49,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73f05d92c/07234f14bff5469cab1976d482533066/FLAG8a79ce02f [2025-03-17 14:00:49,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73f05d92c/07234f14bff5469cab1976d482533066 [2025-03-17 14:00:49,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:00:49,312 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:00:49,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:00:49,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:00:49,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:00:49,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2061303d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49, skipping insertion in model container [2025-03-17 14:00:49,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,341 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:00:49,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:00:49,624 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:00:49,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:00:49,678 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:00:49,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49 WrapperNode [2025-03-17 14:00:49,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:00:49,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:00:49,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:00:49,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:00:49,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,708 INFO L138 Inliner]: procedures = 174, calls = 46, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 159 [2025-03-17 14:00:49,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:00:49,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:00:49,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:00:49,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:00:49,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,728 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 6, 9, 6]. 39 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 0, 1, 2]. The 8 writes are split as follows [0, 4, 2, 2]. [2025-03-17 14:00:49,729 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,736 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:00:49,742 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:00:49,742 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:00:49,743 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:00:49,743 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (1/1) ... [2025-03-17 14:00:49,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:00:49,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:49,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 14:00:49,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 14:00:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 14:00:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 14:00:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 14:00:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 14:00:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 14:00:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 14:00:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 14:00:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 14:00:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 14:00:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 14:00:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:00:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:00:49,794 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:00:49,906 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:00:49,907 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:00:50,216 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: havoc dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset; [2025-03-17 14:00:50,217 INFO L1322 $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 [2025-03-17 14:00:50,217 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L711: havoc inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset; [2025-03-17 14:00:50,218 INFO L1322 $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 [2025-03-17 14:00:50,249 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:00:50,249 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:00:50,495 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:00:50,495 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:00:50,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:00:50 BoogieIcfgContainer [2025-03-17 14:00:50,496 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:00:50,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:00:50,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:00:50,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:00:50,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:00:49" (1/3) ... [2025-03-17 14:00:50,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384b45f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:00:50, skipping insertion in model container [2025-03-17 14:00:50,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:49" (2/3) ... [2025-03-17 14:00:50,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384b45f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:00:50, skipping insertion in model container [2025-03-17 14:00:50,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:00:50" (3/3) ... [2025-03-17 14:00:50,503 INFO L128 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2025-03-17 14:00:50,516 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:00:50,518 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. [2025-03-17 14:00:50,518 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:00:50,625 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 14:00:50,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 74 transitions, 152 flow [2025-03-17 14:00:50,715 INFO L124 PetriNetUnfolderBase]: 9/78 cut-off events. [2025-03-17 14:00:50,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:00:50,721 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 392 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. [2025-03-17 14:00:50,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 74 transitions, 152 flow [2025-03-17 14:00:50,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 74 transitions, 152 flow [2025-03-17 14:00:50,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:00:50,744 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;@2f102b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:00:50,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2025-03-17 14:00:50,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:00:50,747 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-17 14:00:50,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:00:50,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:50,747 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:00:50,748 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-03-17 14:00:50,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash 516621, now seen corresponding path program 1 times [2025-03-17 14:00:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603600309] [2025-03-17 14:00:50,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:50,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:50,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:00:50,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:00:50,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:50,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:50,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:50,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603600309] [2025-03-17 14:00:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603600309] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:50,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:50,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:00:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444501464] [2025-03-17 14:00:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:50,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 14:00:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:50,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 14:00:50,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 14:00:50,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 74 [2025-03-17 14:00:50,907 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) [2025-03-17 14:00:50,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:50,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 74 [2025-03-17 14:00:50,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:51,075 INFO L124 PetriNetUnfolderBase]: 115/281 cut-off events. [2025-03-17 14:00:51,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:00:51,077 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 47. Compared 1358 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. [2025-03-17 14:00:51,080 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 58 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2025-03-17 14:00:51,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 250 flow [2025-03-17 14:00:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 14:00:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 14:00:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 81 transitions. [2025-03-17 14:00:51,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5472972972972973 [2025-03-17 14:00:51,096 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 152 flow. Second operand 2 states and 81 transitions. [2025-03-17 14:00:51,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 250 flow [2025-03-17 14:00:51,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 14:00:51,104 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 134 flow [2025-03-17 14:00:51,106 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} [2025-03-17 14:00:51,109 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2025-03-17 14:00:51,109 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 134 flow [2025-03-17 14:00:51,109 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) [2025-03-17 14:00:51,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:51,109 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 14:00:51,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:00:51,109 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-03-17 14:00:51,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1783766257, now seen corresponding path program 1 times [2025-03-17 14:00:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:51,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719523094] [2025-03-17 14:00:51,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:51,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:51,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:00:51,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:00:51,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:51,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 14:00:51,134 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 14:00:51,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:00:51,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:00:51,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:51,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 14:00:51,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 14:00:51,163 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 14:00:51,164 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (77 of 78 remaining) [2025-03-17 14:00:51,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 78 remaining) [2025-03-17 14:00:51,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 78 remaining) [2025-03-17 14:00:51,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 78 remaining) [2025-03-17 14:00:51,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 78 remaining) [2025-03-17 14:00:51,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 78 remaining) [2025-03-17 14:00:51,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 78 remaining) [2025-03-17 14:00:51,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 78 remaining) [2025-03-17 14:00:51,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 78 remaining) [2025-03-17 14:00:51,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (68 of 78 remaining) [2025-03-17 14:00:51,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 78 remaining) [2025-03-17 14:00:51,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 78 remaining) [2025-03-17 14:00:51,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 78 remaining) [2025-03-17 14:00:51,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 78 remaining) [2025-03-17 14:00:51,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (63 of 78 remaining) [2025-03-17 14:00:51,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 78 remaining) [2025-03-17 14:00:51,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 78 remaining) [2025-03-17 14:00:51,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 78 remaining) [2025-03-17 14:00:51,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 78 remaining) [2025-03-17 14:00:51,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 78 remaining) [2025-03-17 14:00:51,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 78 remaining) [2025-03-17 14:00:51,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 78 remaining) [2025-03-17 14:00:51,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 78 remaining) [2025-03-17 14:00:51,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 78 remaining) [2025-03-17 14:00:51,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 78 remaining) [2025-03-17 14:00:51,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 78 remaining) [2025-03-17 14:00:51,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 78 remaining) [2025-03-17 14:00:51,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 78 remaining) [2025-03-17 14:00:51,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 78 remaining) [2025-03-17 14:00:51,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 78 remaining) [2025-03-17 14:00:51,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 78 remaining) [2025-03-17 14:00:51,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 78 remaining) [2025-03-17 14:00:51,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 78 remaining) [2025-03-17 14:00:51,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 78 remaining) [2025-03-17 14:00:51,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 78 remaining) [2025-03-17 14:00:51,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 78 remaining) [2025-03-17 14:00:51,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 78 remaining) [2025-03-17 14:00:51,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 78 remaining) [2025-03-17 14:00:51,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 78 remaining) [2025-03-17 14:00:51,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 78 remaining) [2025-03-17 14:00:51,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (29 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (24 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 78 remaining) [2025-03-17 14:00:51,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 78 remaining) [2025-03-17 14:00:51,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 78 remaining) [2025-03-17 14:00:51,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:00:51,174 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 14:00:51,176 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 14:00:51,177 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 14:00:51,286 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 14:00:51,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 141 transitions, 292 flow [2025-03-17 14:00:51,322 INFO L124 PetriNetUnfolderBase]: 18/150 cut-off events. [2025-03-17 14:00:51,326 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 14:00:51,328 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 907 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. [2025-03-17 14:00:51,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 141 transitions, 292 flow [2025-03-17 14:00:51,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 141 transitions, 292 flow [2025-03-17 14:00:51,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:00:51,336 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;@2f102b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:00:51,336 INFO L334 AbstractCegarLoop]: Starting to check reachability of 116 error locations. [2025-03-17 14:00:51,337 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:00:51,339 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-17 14:00:51,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:00:51,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:51,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:00:51,339 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:00:51,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash 656634, now seen corresponding path program 1 times [2025-03-17 14:00:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:51,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943152766] [2025-03-17 14:00:51,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:51,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:51,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:00:51,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:00:51,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:51,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:51,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:51,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943152766] [2025-03-17 14:00:51,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943152766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:51,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:51,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:00:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036055912] [2025-03-17 14:00:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:51,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 14:00:51,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:51,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 14:00:51,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 14:00:51,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-17 14:00:51,375 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) [2025-03-17 14:00:51,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:51,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-17 14:00:51,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:53,213 INFO L124 PetriNetUnfolderBase]: 13411/21211 cut-off events. [2025-03-17 14:00:53,213 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-03-17 14:00:53,242 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 152031 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. [2025-03-17 14:00:53,341 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 113 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2025-03-17 14:00:53,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 126 transitions, 488 flow [2025-03-17 14:00:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 14:00:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 14:00:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 154 transitions. [2025-03-17 14:00:53,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2025-03-17 14:00:53,346 INFO L175 Difference]: Start difference. First operand has 128 places, 141 transitions, 292 flow. Second operand 2 states and 154 transitions. [2025-03-17 14:00:53,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 126 transitions, 488 flow [2025-03-17 14:00:53,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 126 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 14:00:53,349 INFO L231 Difference]: Finished difference. Result has 118 places, 126 transitions, 262 flow [2025-03-17 14:00:53,349 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} [2025-03-17 14:00:53,350 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2025-03-17 14:00:53,350 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 126 transitions, 262 flow [2025-03-17 14:00:53,350 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) [2025-03-17 14:00:53,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:53,350 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:00:53,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:00:53,351 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:00:53,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:53,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1905431409, now seen corresponding path program 1 times [2025-03-17 14:00:53,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:53,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587503880] [2025-03-17 14:00:53,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:53,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:53,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:00:53,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:00:53,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:53,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:53,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:53,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587503880] [2025-03-17 14:00:53,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587503880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:53,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:53,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:00:53,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905584061] [2025-03-17 14:00:53,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:53,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:00:53,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:53,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:00:53,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:00:53,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-17 14:00:53,521 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) [2025-03-17 14:00:53,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:53,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-17 14:00:53,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:55,140 INFO L124 PetriNetUnfolderBase]: 12049/19219 cut-off events. [2025-03-17 14:00:55,141 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2025-03-17 14:00:55,158 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 1260. Compared 139393 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. [2025-03-17 14:00:55,214 INFO L140 encePairwiseOnDemand]: 80/141 looper letters, 241 selfloop transitions, 57 changer transitions 0/311 dead transitions. [2025-03-17 14:00:55,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 311 transitions, 1233 flow [2025-03-17 14:00:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:00:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:00:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2025-03-17 14:00:55,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2025-03-17 14:00:55,220 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 262 flow. Second operand 4 states and 378 transitions. [2025-03-17 14:00:55,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 311 transitions, 1233 flow [2025-03-17 14:00:55,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 311 transitions, 1233 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 14:00:55,230 INFO L231 Difference]: Finished difference. Result has 124 places, 182 transitions, 746 flow [2025-03-17 14:00:55,231 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} [2025-03-17 14:00:55,231 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -4 predicate places. [2025-03-17 14:00:55,232 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 182 transitions, 746 flow [2025-03-17 14:00:55,232 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) [2025-03-17 14:00:55,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:55,232 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:00:55,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:00:55,233 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:00:55,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1905431408, now seen corresponding path program 1 times [2025-03-17 14:00:55,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:55,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997269650] [2025-03-17 14:00:55,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:55,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:55,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:00:55,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:00:55,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:55,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:55,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:55,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997269650] [2025-03-17 14:00:55,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997269650] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:55,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:55,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:00:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205955333] [2025-03-17 14:00:55,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:55,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:00:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:55,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:00:55,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:00:55,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-17 14:00:55,386 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) [2025-03-17 14:00:55,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:55,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-17 14:00:55,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:56,683 INFO L124 PetriNetUnfolderBase]: 9271/14803 cut-off events. [2025-03-17 14:00:56,683 INFO L125 PetriNetUnfolderBase]: For 1974/1974 co-relation queries the response was YES. [2025-03-17 14:00:56,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36532 conditions, 14803 events. 9271/14803 cut-off events. For 1974/1974 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 103590 event pairs, 6922 based on Foata normal form. 972/10180 useless extension candidates. Maximal degree in co-relation 36524. Up to 14133 conditions per place. [2025-03-17 14:00:56,766 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 156 selfloop transitions, 1 changer transitions 0/170 dead transitions. [2025-03-17 14:00:56,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 170 transitions, 1036 flow [2025-03-17 14:00:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:00:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:00:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2025-03-17 14:00:56,768 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3664302600472813 [2025-03-17 14:00:56,768 INFO L175 Difference]: Start difference. First operand has 124 places, 182 transitions, 746 flow. Second operand 3 states and 155 transitions. [2025-03-17 14:00:56,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 170 transitions, 1036 flow [2025-03-17 14:00:56,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 170 transitions, 1036 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 14:00:56,794 INFO L231 Difference]: Finished difference. Result has 114 places, 170 transitions, 724 flow [2025-03-17 14:00:56,794 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=724, PETRI_PLACES=114, PETRI_TRANSITIONS=170} [2025-03-17 14:00:56,795 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -14 predicate places. [2025-03-17 14:00:56,796 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 170 transitions, 724 flow [2025-03-17 14:00:56,796 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) [2025-03-17 14:00:56,796 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:56,796 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:56,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 14:00:56,796 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:00:56,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1463490330, now seen corresponding path program 1 times [2025-03-17 14:00:56,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:56,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848916373] [2025-03-17 14:00:56,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:56,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:56,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:00:56,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:00:56,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:56,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:56,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:56,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848916373] [2025-03-17 14:00:56,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848916373] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:56,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:56,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:00:56,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594520306] [2025-03-17 14:00:56,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:56,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:00:56,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:56,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:00:56,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:00:56,933 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-17 14:00:56,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 170 transitions, 724 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) [2025-03-17 14:00:56,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:56,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-17 14:00:56,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:57,917 INFO L124 PetriNetUnfolderBase]: 8551/13663 cut-off events. [2025-03-17 14:00:57,917 INFO L125 PetriNetUnfolderBase]: For 1920/1920 co-relation queries the response was YES. [2025-03-17 14:00:57,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33747 conditions, 13663 events. 8551/13663 cut-off events. For 1920/1920 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 94877 event pairs, 4876 based on Foata normal form. 0/8716 useless extension candidates. Maximal degree in co-relation 33738. Up to 7932 conditions per place. [2025-03-17 14:00:57,982 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 217 selfloop transitions, 9 changer transitions 0/239 dead transitions. [2025-03-17 14:00:57,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 239 transitions, 1395 flow [2025-03-17 14:00:57,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:00:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:00:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2025-03-17 14:00:57,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2025-03-17 14:00:57,983 INFO L175 Difference]: Start difference. First operand has 114 places, 170 transitions, 724 flow. Second operand 3 states and 224 transitions. [2025-03-17 14:00:57,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 239 transitions, 1395 flow [2025-03-17 14:00:57,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 239 transitions, 1394 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:00:57,992 INFO L231 Difference]: Finished difference. Result has 116 places, 170 transitions, 758 flow [2025-03-17 14:00:57,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=113, 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=3, PETRI_FLOW=758, PETRI_PLACES=116, PETRI_TRANSITIONS=170} [2025-03-17 14:00:57,993 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -12 predicate places. [2025-03-17 14:00:57,993 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 170 transitions, 758 flow [2025-03-17 14:00:57,993 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) [2025-03-17 14:00:57,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:57,993 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:57,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 14:00:57,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:00:57,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1463490329, now seen corresponding path program 1 times [2025-03-17 14:00:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418362942] [2025-03-17 14:00:57,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:57,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:57,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:00:58,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:00:58,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:58,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:58,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418362942] [2025-03-17 14:00:58,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418362942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:58,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:58,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:00:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676771959] [2025-03-17 14:00:58,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:58,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:00:58,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:58,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:00:58,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:00:58,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-17 14:00:58,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 170 transitions, 758 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) [2025-03-17 14:00:58,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:58,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-17 14:00:58,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:58,892 INFO L124 PetriNetUnfolderBase]: 7745/12389 cut-off events. [2025-03-17 14:00:58,893 INFO L125 PetriNetUnfolderBase]: For 3108/3108 co-relation queries the response was YES. [2025-03-17 14:00:58,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32086 conditions, 12389 events. 7745/12389 cut-off events. For 3108/3108 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 84649 event pairs, 5594 based on Foata normal form. 0/8186 useless extension candidates. Maximal degree in co-relation 32076. Up to 11755 conditions per place. [2025-03-17 14:00:58,943 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 150 selfloop transitions, 1 changer transitions 0/164 dead transitions. [2025-03-17 14:00:58,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 164 transitions, 1036 flow [2025-03-17 14:00:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:00:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:00:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2025-03-17 14:00:58,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3380614657210402 [2025-03-17 14:00:58,944 INFO L175 Difference]: Start difference. First operand has 116 places, 170 transitions, 758 flow. Second operand 3 states and 143 transitions. [2025-03-17 14:00:58,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 164 transitions, 1036 flow [2025-03-17 14:00:58,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 1018 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:00:58,952 INFO L231 Difference]: Finished difference. Result has 112 places, 164 transitions, 718 flow [2025-03-17 14:00:58,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=718, PETRI_PLACES=112, PETRI_TRANSITIONS=164} [2025-03-17 14:00:58,953 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -16 predicate places. [2025-03-17 14:00:58,953 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 164 transitions, 718 flow [2025-03-17 14:00:58,953 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) [2025-03-17 14:00:58,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:58,953 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:58,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 14:00:58,954 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:00:58,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:58,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1463490326, now seen corresponding path program 1 times [2025-03-17 14:00:58,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:58,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803663755] [2025-03-17 14:00:58,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:58,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:58,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:00:58,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:00:58,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:58,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:58,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803663755] [2025-03-17 14:00:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803663755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:58,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:58,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:00:59,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978950628] [2025-03-17 14:00:59,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:59,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:00:59,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:59,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:00:59,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:00:59,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 141 [2025-03-17 14:00:59,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 164 transitions, 718 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) [2025-03-17 14:00:59,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:59,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 141 [2025-03-17 14:00:59,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:59,836 INFO L124 PetriNetUnfolderBase]: 7896/12489 cut-off events. [2025-03-17 14:00:59,836 INFO L125 PetriNetUnfolderBase]: For 1809/1809 co-relation queries the response was YES. [2025-03-17 14:00:59,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31683 conditions, 12489 events. 7896/12489 cut-off events. For 1809/1809 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 85058 event pairs, 3624 based on Foata normal form. 0/8625 useless extension candidates. Maximal degree in co-relation 31673. Up to 8253 conditions per place. [2025-03-17 14:00:59,880 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 197 selfloop transitions, 15 changer transitions 0/223 dead transitions. [2025-03-17 14:00:59,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 223 transitions, 1355 flow [2025-03-17 14:00:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:00:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:00:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2025-03-17 14:00:59,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4657210401891253 [2025-03-17 14:00:59,881 INFO L175 Difference]: Start difference. First operand has 112 places, 164 transitions, 718 flow. Second operand 3 states and 197 transitions. [2025-03-17 14:00:59,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 223 transitions, 1355 flow [2025-03-17 14:00:59,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 223 transitions, 1354 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:00:59,890 INFO L231 Difference]: Finished difference. Result has 115 places, 173 transitions, 849 flow [2025-03-17 14:00:59,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=849, PETRI_PLACES=115, PETRI_TRANSITIONS=173} [2025-03-17 14:00:59,891 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -13 predicate places. [2025-03-17 14:00:59,891 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 173 transitions, 849 flow [2025-03-17 14:00:59,891 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) [2025-03-17 14:00:59,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:59,891 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:59,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 14:00:59,891 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:00:59,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:59,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1463490325, now seen corresponding path program 1 times [2025-03-17 14:00:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794463112] [2025-03-17 14:00:59,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:59,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:59,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:00:59,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:00:59,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:59,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:59,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:59,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794463112] [2025-03-17 14:00:59,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794463112] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:59,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:59,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:00:59,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089709341] [2025-03-17 14:00:59,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:59,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:00:59,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:59,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:00:59,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:00:59,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 141 [2025-03-17 14:00:59,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 173 transitions, 849 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) [2025-03-17 14:00:59,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:59,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 141 [2025-03-17 14:00:59,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:00,907 INFO L124 PetriNetUnfolderBase]: 7263/11499 cut-off events. [2025-03-17 14:01:00,907 INFO L125 PetriNetUnfolderBase]: For 4132/4132 co-relation queries the response was YES. [2025-03-17 14:01:00,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30676 conditions, 11499 events. 7263/11499 cut-off events. For 4132/4132 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 76717 event pairs, 3546 based on Foata normal form. 222/8388 useless extension candidates. Maximal degree in co-relation 30665. Up to 7425 conditions per place. [2025-03-17 14:01:00,975 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 183 selfloop transitions, 9 changer transitions 0/205 dead transitions. [2025-03-17 14:01:00,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 205 transitions, 1326 flow [2025-03-17 14:01:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:01:00,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:01:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2025-03-17 14:01:00,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42080378250591016 [2025-03-17 14:01:00,977 INFO L175 Difference]: Start difference. First operand has 115 places, 173 transitions, 849 flow. Second operand 3 states and 178 transitions. [2025-03-17 14:01:00,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 205 transitions, 1326 flow [2025-03-17 14:01:00,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 205 transitions, 1296 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:01:01,000 INFO L231 Difference]: Finished difference. Result has 112 places, 168 transitions, 815 flow [2025-03-17 14:01:01,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=815, PETRI_PLACES=112, PETRI_TRANSITIONS=168} [2025-03-17 14:01:01,001 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -16 predicate places. [2025-03-17 14:01:01,001 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 168 transitions, 815 flow [2025-03-17 14:01:01,001 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) [2025-03-17 14:01:01,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:01,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:01,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 14:01:01,001 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:01:01,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:01,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1463524229, now seen corresponding path program 1 times [2025-03-17 14:01:01,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:01:01,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307562716] [2025-03-17 14:01:01,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:01,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:01:01,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:01:01,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:01:01,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:01,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:01,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:01:01,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307562716] [2025-03-17 14:01:01,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307562716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:01,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:01,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:01:01,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712375660] [2025-03-17 14:01:01,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:01,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:01:01,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:01:01,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:01:01,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:01:01,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 141 [2025-03-17 14:01:01,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 168 transitions, 815 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) [2025-03-17 14:01:01,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:01,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 141 [2025-03-17 14:01:01,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:01,933 INFO L124 PetriNetUnfolderBase]: 7414/11581 cut-off events. [2025-03-17 14:01:01,933 INFO L125 PetriNetUnfolderBase]: For 4108/4123 co-relation queries the response was YES. [2025-03-17 14:01:01,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30729 conditions, 11581 events. 7414/11581 cut-off events. For 4108/4123 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 76261 event pairs, 3192 based on Foata normal form. 0/8479 useless extension candidates. Maximal degree in co-relation 30718. Up to 7524 conditions per place. [2025-03-17 14:01:01,983 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 201 selfloop transitions, 15 changer transitions 0/227 dead transitions. [2025-03-17 14:01:01,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 227 transitions, 1470 flow [2025-03-17 14:01:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:01:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:01:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2025-03-17 14:01:01,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46099290780141844 [2025-03-17 14:01:01,988 INFO L175 Difference]: Start difference. First operand has 112 places, 168 transitions, 815 flow. Second operand 3 states and 195 transitions. [2025-03-17 14:01:01,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 227 transitions, 1470 flow [2025-03-17 14:01:02,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 227 transitions, 1452 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:01:02,002 INFO L231 Difference]: Finished difference. Result has 114 places, 177 transitions, 937 flow [2025-03-17 14:01:02,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=937, PETRI_PLACES=114, PETRI_TRANSITIONS=177} [2025-03-17 14:01:02,004 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -14 predicate places. [2025-03-17 14:01:02,004 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 177 transitions, 937 flow [2025-03-17 14:01:02,005 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) [2025-03-17 14:01:02,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:02,006 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:02,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 14:01:02,006 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:01:02,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1463524228, now seen corresponding path program 1 times [2025-03-17 14:01:02,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:01:02,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864787653] [2025-03-17 14:01:02,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:02,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:01:02,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:01:02,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:01:02,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:02,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:02,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:01:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864787653] [2025-03-17 14:01:02,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864787653] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:02,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:02,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:01:02,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90110455] [2025-03-17 14:01:02,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:02,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:01:02,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:01:02,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:01:02,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:01:02,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 141 [2025-03-17 14:01:02,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 177 transitions, 937 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) [2025-03-17 14:01:02,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:02,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 141 [2025-03-17 14:01:02,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:03,358 INFO L124 PetriNetUnfolderBase]: 11997/18927 cut-off events. [2025-03-17 14:01:03,359 INFO L125 PetriNetUnfolderBase]: For 9372/9387 co-relation queries the response was YES. [2025-03-17 14:01:03,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51698 conditions, 18927 events. 11997/18927 cut-off events. For 9372/9387 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 133045 event pairs, 3770 based on Foata normal form. 201/14358 useless extension candidates. Maximal degree in co-relation 51686. Up to 11181 conditions per place. [2025-03-17 14:01:03,489 INFO L140 encePairwiseOnDemand]: 129/141 looper letters, 410 selfloop transitions, 34 changer transitions 0/458 dead transitions. [2025-03-17 14:01:03,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 458 transitions, 3261 flow [2025-03-17 14:01:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:01:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 14:01:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2025-03-17 14:01:03,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2025-03-17 14:01:03,490 INFO L175 Difference]: Start difference. First operand has 114 places, 177 transitions, 937 flow. Second operand 5 states and 339 transitions. [2025-03-17 14:01:03,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 458 transitions, 3261 flow [2025-03-17 14:01:03,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 458 transitions, 3167 flow, removed 16 selfloop flow, removed 2 redundant places. [2025-03-17 14:01:03,528 INFO L231 Difference]: Finished difference. Result has 119 places, 210 transitions, 1250 flow [2025-03-17 14:01:03,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1250, PETRI_PLACES=119, PETRI_TRANSITIONS=210} [2025-03-17 14:01:03,528 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -9 predicate places. [2025-03-17 14:01:03,529 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 210 transitions, 1250 flow [2025-03-17 14:01:03,529 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) [2025-03-17 14:01:03,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:03,529 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-17 14:01:03,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 14:01:03,529 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-03-17 14:01:03,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:03,529 INFO L85 PathProgramCache]: Analyzing trace with hash -166600832, now seen corresponding path program 1 times [2025-03-17 14:01:03,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:01:03,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635088709] [2025-03-17 14:01:03,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:03,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:01:03,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 14:01:03,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 14:01:03,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:03,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 14:01:03,535 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 14:01:03,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 14:01:03,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 14:01:03,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:03,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 14:01:03,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 14:01:03,541 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 14:01:03,541 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (115 of 116 remaining) [2025-03-17 14:01:03,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 116 remaining) [2025-03-17 14:01:03,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 116 remaining) [2025-03-17 14:01:03,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 116 remaining) [2025-03-17 14:01:03,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (106 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (101 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 116 remaining) [2025-03-17 14:01:03,542 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 116 remaining) [2025-03-17 14:01:03,543 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (76 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (67 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (62 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 116 remaining) [2025-03-17 14:01:03,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 116 remaining) [2025-03-17 14:01:03,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 116 remaining) [2025-03-17 14:01:03,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 116 remaining) [2025-03-17 14:01:03,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 116 remaining) [2025-03-17 14:01:03,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 116 remaining) [2025-03-17 14:01:03,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 116 remaining) [2025-03-17 14:01:03,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (29 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (24 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 116 remaining) [2025-03-17 14:01:03,546 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 116 remaining) [2025-03-17 14:01:03,547 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 116 remaining) [2025-03-17 14:01:03,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 14:01:03,547 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:03,548 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 14:01:03,548 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 14:01:03,650 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 14:01:03,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 208 transitions, 434 flow [2025-03-17 14:01:03,671 INFO L124 PetriNetUnfolderBase]: 27/222 cut-off events. [2025-03-17 14:01:03,672 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 14:01:03,674 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 1437 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. [2025-03-17 14:01:03,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 208 transitions, 434 flow [2025-03-17 14:01:03,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 208 transitions, 434 flow [2025-03-17 14:01:03,677 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:01:03,678 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;@2f102b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:01:03,678 INFO L334 AbstractCegarLoop]: Starting to check reachability of 154 error locations. [2025-03-17 14:01:03,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:01:03,679 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-03-17 14:01:03,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:01:03,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:03,679 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 14:01:03,679 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 151 more)] === [2025-03-17 14:01:03,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:03,679 INFO L85 PathProgramCache]: Analyzing trace with hash 863178, now seen corresponding path program 1 times [2025-03-17 14:01:03,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:01:03,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226065712] [2025-03-17 14:01:03,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:03,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:01:03,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 14:01:03,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 14:01:03,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:03,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:03,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:01:03,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226065712] [2025-03-17 14:01:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226065712] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:03,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:03,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:01:03,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962227445] [2025-03-17 14:01:03,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:03,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 14:01:03,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:01:03,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 14:01:03,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 14:01:03,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 208 [2025-03-17 14:01:03,687 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) [2025-03-17 14:01:03,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:03,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 208 [2025-03-17 14:01:03,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand