./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_rmo.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-wmm/safe027_rmo.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85e3ce8f111292d815206f012225ed7eff4e108dc07a389f6fa2d1590522afb0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:50:51,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:50:51,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:50:51,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:50:51,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:50:51,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:50:51,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:50:51,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:50:51,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:50:51,551 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:50:51,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:50:51,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:50:51,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:50:51,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:50:51,552 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:50:51,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:50:51,552 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:50:51,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:50:51,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:50:51,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:50:51,553 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:50:51,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:50:51,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:50:51,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:50:51,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:50:51,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:50:51,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:50:51,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:50:51,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:50:51,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:50:51,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:50:51,554 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e3ce8f111292d815206f012225ed7eff4e108dc07a389f6fa2d1590522afb0 [2025-02-06 12:50:51,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:50:51,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:50:51,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:50:51,905 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:50:51,906 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:50:51,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_rmo.i [2025-02-06 12:50:53,297 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/064d9e175/f808b488a651426abc6d1628ae373255/FLAGf0842f050 [2025-02-06 12:50:53,610 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:50:53,611 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_rmo.i [2025-02-06 12:50:53,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/064d9e175/f808b488a651426abc6d1628ae373255/FLAGf0842f050 [2025-02-06 12:50:53,641 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/064d9e175/f808b488a651426abc6d1628ae373255 [2025-02-06 12:50:53,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:50:53,644 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:50:53,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:50:53,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:50:53,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:50:53,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:50:53" (1/1) ... [2025-02-06 12:50:53,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf32be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:53, skipping insertion in model container [2025-02-06 12:50:53,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:50:53" (1/1) ... [2025-02-06 12:50:53,684 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:50:54,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:50:54,071 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:50:54,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:50:54,181 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:50:54,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54 WrapperNode [2025-02-06 12:50:54,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:50:54,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:50:54,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:50:54,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:50:54,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,227 INFO L138 Inliner]: procedures = 176, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2025-02-06 12:50:54,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:50:54,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:50:54,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:50:54,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:50:54,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,245 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,268 INFO L175 MemorySlicer]: Split 21 memory accesses to 2 slices as follows [2, 19]. 90 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2025-02-06 12:50:54,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,281 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:50:54,296 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:50:54,297 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:50:54,297 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:50:54,298 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (1/1) ... [2025-02-06 12:50:54,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:50:54,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:50:54,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:50:54,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:50:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 12:50:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 12:50:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 12:50:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 12:50:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 12:50:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:50:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 12:50:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 12:50:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 12:50:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 12:50:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 12:50:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 12:50:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-06 12:50:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-06 12:50:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:50:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 12:50:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 12:50:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:50:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:50:54,360 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:50:54,530 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:50:54,532 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:50:55,035 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:50:55,037 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:50:55,524 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:50:55,525 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:50:55,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:50:55 BoogieIcfgContainer [2025-02-06 12:50:55,526 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:50:55,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:50:55,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:50:55,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:50:55,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:50:53" (1/3) ... [2025-02-06 12:50:55,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34736591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:50:55, skipping insertion in model container [2025-02-06 12:50:55,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:50:54" (2/3) ... [2025-02-06 12:50:55,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34736591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:50:55, skipping insertion in model container [2025-02-06 12:50:55,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:50:55" (3/3) ... [2025-02-06 12:50:55,537 INFO L128 eAbstractionObserver]: Analyzing ICFG safe027_rmo.i [2025-02-06 12:50:55,552 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:50:55,555 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe027_rmo.i that has 5 procedures, 85 locations, 1 initial locations, 0 loop locations, and 38 error locations. [2025-02-06 12:50:55,555 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:50:55,695 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:50:55,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 188 flow [2025-02-06 12:50:55,791 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2025-02-06 12:50:55,794 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:50:55,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 291 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2025-02-06 12:50:55,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 188 flow [2025-02-06 12:50:55,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 82 transitions, 176 flow [2025-02-06 12:50:55,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:50:55,871 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;@b1995e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:50:55,872 INFO L334 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2025-02-06 12:50:55,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:50:55,877 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2025-02-06 12:50:55,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:50:55,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:50:55,878 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 12:50:55,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-02-06 12:50:55,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:50:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash 23488354, now seen corresponding path program 1 times [2025-02-06 12:50:55,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:50:55,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79668811] [2025-02-06 12:50:55,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:50:55,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:50:55,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:50:56,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:50:56,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:50:56,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:50:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:50:56,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:50:56,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79668811] [2025-02-06 12:50:56,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79668811] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:50:56,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:50:56,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:50:56,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18904610] [2025-02-06 12:50:56,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:50:56,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:50:56,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:50:56,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:50:56,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:50:56,269 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 86 [2025-02-06 12:50:56,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:50:56,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:50:56,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 86 [2025-02-06 12:50:56,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:51:06,264 INFO L124 PetriNetUnfolderBase]: 92403/128318 cut-off events. [2025-02-06 12:51:06,265 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2025-02-06 12:51:06,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249318 conditions, 128318 events. 92403/128318 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 4655. Compared 919215 event pairs, 92403 based on Foata normal form. 3920/106033 useless extension candidates. Maximal degree in co-relation 249306. Up to 120418 conditions per place. [2025-02-06 12:51:07,094 INFO L140 encePairwiseOnDemand]: 56/86 looper letters, 43 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2025-02-06 12:51:07,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 52 transitions, 204 flow [2025-02-06 12:51:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:51:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:51:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-02-06 12:51:07,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42248062015503873 [2025-02-06 12:51:07,110 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 176 flow. Second operand 3 states and 109 transitions. [2025-02-06 12:51:07,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 52 transitions, 204 flow [2025-02-06 12:51:07,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 52 transitions, 200 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 12:51:07,129 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 114 flow [2025-02-06 12:51:07,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2025-02-06 12:51:07,134 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -30 predicate places. [2025-02-06 12:51:07,135 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 114 flow [2025-02-06 12:51:07,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:51:07,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:51:07,135 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 12:51:07,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:51:07,136 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-02-06 12:51:07,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:51:07,137 INFO L85 PathProgramCache]: Analyzing trace with hash 23488355, now seen corresponding path program 1 times [2025-02-06 12:51:07,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:51:07,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840890728] [2025-02-06 12:51:07,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:51:07,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:51:07,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 12:51:07,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 12:51:07,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:51:07,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:51:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:51:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:51:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840890728] [2025-02-06 12:51:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840890728] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:51:07,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:51:07,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:51:07,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725015425] [2025-02-06 12:51:07,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:51:07,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:51:07,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:51:07,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:51:07,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:51:07,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 86 [2025-02-06 12:51:07,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:51:07,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:51:07,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 86 [2025-02-06 12:51:07,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:51:11,170 INFO L124 PetriNetUnfolderBase]: 35377/50259 cut-off events. [2025-02-06 12:51:11,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:51:11,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97307 conditions, 50259 events. 35377/50259 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1728. Compared 333195 event pairs, 35377 based on Foata normal form. 0/48389 useless extension candidates. Maximal degree in co-relation 97301. Up to 46610 conditions per place. [2025-02-06 12:51:11,465 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 35 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2025-02-06 12:51:11,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 174 flow [2025-02-06 12:51:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:51:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:51:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-02-06 12:51:11,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31007751937984496 [2025-02-06 12:51:11,467 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 114 flow. Second operand 3 states and 80 transitions. [2025-02-06 12:51:11,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 174 flow [2025-02-06 12:51:11,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:51:11,469 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 99 flow [2025-02-06 12:51:11,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2025-02-06 12:51:11,469 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -36 predicate places. [2025-02-06 12:51:11,470 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 99 flow [2025-02-06 12:51:11,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:51:11,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:51:11,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:51:11,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:51:11,470 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-02-06 12:51:11,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:51:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1217116097, now seen corresponding path program 1 times [2025-02-06 12:51:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:51:11,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809890941] [2025-02-06 12:51:11,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:51:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:51:11,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 12:51:11,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 12:51:11,527 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:51:11,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:51:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:51:11,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:51:11,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809890941] [2025-02-06 12:51:11,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809890941] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:51:11,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:51:11,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:51:11,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403480780] [2025-02-06 12:51:11,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:51:11,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:51:11,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:51:11,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:51:11,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:51:11,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 86 [2025-02-06 12:51:11,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:51:11,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:51:11,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 86 [2025-02-06 12:51:11,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:51:14,871 INFO L124 PetriNetUnfolderBase]: 31407/42052 cut-off events. [2025-02-06 12:51:14,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:51:14,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83931 conditions, 42052 events. 31407/42052 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 253043 event pairs, 4442 based on Foata normal form. 0/40538 useless extension candidates. Maximal degree in co-relation 83924. Up to 36776 conditions per place. [2025-02-06 12:51:15,121 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 61 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2025-02-06 12:51:15,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 285 flow [2025-02-06 12:51:15,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:51:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:51:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-02-06 12:51:15,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39147286821705424 [2025-02-06 12:51:15,123 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 99 flow. Second operand 3 states and 101 transitions. [2025-02-06 12:51:15,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 285 flow [2025-02-06 12:51:15,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:51:15,125 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2025-02-06 12:51:15,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2025-02-06 12:51:15,128 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -35 predicate places. [2025-02-06 12:51:15,128 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2025-02-06 12:51:15,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:51:15,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:51:15,128 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:51:15,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:51:15,129 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-02-06 12:51:15,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:51:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1417520404, now seen corresponding path program 1 times [2025-02-06 12:51:15,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:51:15,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592053777] [2025-02-06 12:51:15,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:51:15,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:51:15,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:51:15,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:51:15,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:51:15,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:51:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:51:15,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:51:15,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592053777] [2025-02-06 12:51:15,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592053777] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:51:15,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:51:15,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:51:15,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330173687] [2025-02-06 12:51:15,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:51:15,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:51:15,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:51:15,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:51:15,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:51:15,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 86 [2025-02-06 12:51:15,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 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) [2025-02-06 12:51:15,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:51:15,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 86 [2025-02-06 12:51:15,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:51:18,688 INFO L124 PetriNetUnfolderBase]: 28982/38877 cut-off events. [2025-02-06 12:51:18,689 INFO L125 PetriNetUnfolderBase]: For 2022/2022 co-relation queries the response was YES. [2025-02-06 12:51:18,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81177 conditions, 38877 events. 28982/38877 cut-off events. For 2022/2022 co-relation queries the response was YES. Maximal size of possible extension queue 1320. Compared 232938 event pairs, 3842 based on Foata normal form. 0/38863 useless extension candidates. Maximal degree in co-relation 81168. Up to 33600 conditions per place. [2025-02-06 12:51:18,933 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 60 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2025-02-06 12:51:18,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 288 flow [2025-02-06 12:51:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:51:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:51:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-02-06 12:51:18,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3226744186046512 [2025-02-06 12:51:18,936 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 111 transitions. [2025-02-06 12:51:18,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 288 flow [2025-02-06 12:51:18,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:51:18,940 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2025-02-06 12:51:18,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2025-02-06 12:51:18,942 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -35 predicate places. [2025-02-06 12:51:18,942 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2025-02-06 12:51:18,943 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) [2025-02-06 12:51:18,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:51:18,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:51:18,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 12:51:18,943 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-02-06 12:51:18,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:51:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1417520405, now seen corresponding path program 1 times [2025-02-06 12:51:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:51:18,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510714353] [2025-02-06 12:51:18,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:51:18,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:51:18,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:51:18,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:51:18,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:51:18,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:51:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:51:19,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:51:19,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510714353] [2025-02-06 12:51:19,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510714353] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:51:19,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:51:19,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:51:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461985588] [2025-02-06 12:51:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:51:19,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:51:19,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:51:19,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:51:19,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:51:19,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 86 [2025-02-06 12:51:19,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 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) [2025-02-06 12:51:19,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:51:19,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 86 [2025-02-06 12:51:19,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:51:21,896 INFO L124 PetriNetUnfolderBase]: 26557/35702 cut-off events. [2025-02-06 12:51:21,896 INFO L125 PetriNetUnfolderBase]: For 2022/2022 co-relation queries the response was YES. [2025-02-06 12:51:21,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74077 conditions, 35702 events. 26557/35702 cut-off events. For 2022/2022 co-relation queries the response was YES. Maximal size of possible extension queue 1198. Compared 213521 event pairs, 3242 based on Foata normal form. 750/36438 useless extension candidates. Maximal degree in co-relation 74068. Up to 30425 conditions per place. [2025-02-06 12:51:22,115 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 59 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2025-02-06 12:51:22,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 282 flow [2025-02-06 12:51:22,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:51:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:51:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-02-06 12:51:22,117 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31976744186046513 [2025-02-06 12:51:22,117 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 110 transitions. [2025-02-06 12:51:22,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 282 flow [2025-02-06 12:51:22,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 277 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 12:51:22,120 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2025-02-06 12:51:22,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2025-02-06 12:51:22,121 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -36 predicate places. [2025-02-06 12:51:22,121 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2025-02-06 12:51:22,121 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) [2025-02-06 12:51:22,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:51:22,121 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:51:22,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 12:51:22,122 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2025-02-06 12:51:22,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:51:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash 701232146, now seen corresponding path program 1 times [2025-02-06 12:51:22,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:51:22,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311365379] [2025-02-06 12:51:22,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:51:22,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:51:22,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 12:51:22,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 12:51:22,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:51:22,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:51:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:51:22,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:51:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311365379] [2025-02-06 12:51:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311365379] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:51:22,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:51:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:51:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553023043] [2025-02-06 12:51:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:51:22,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:51:22,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:51:22,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:51:22,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:51:22,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 86 [2025-02-06 12:51:22,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:51:22,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:51:22,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 86 [2025-02-06 12:51:22,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand