./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:34:30,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:34:30,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:34:30,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:34:30,619 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:34:30,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:34:30,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:34:30,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:34:30,641 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:34:30,641 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:34:30,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:34:30,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:34:30,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:34:30,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:34:30,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:34:30,643 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:34:30,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:34:30,643 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:34:30,643 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:34:30,643 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:34:30,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:34:30,643 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:34:30,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:34:30,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:34:30,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:34:30,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:34:30,644 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:34:30,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:34:30,645 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:34:30,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:34:30,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:34:30,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:34:30,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:34:30,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:34:30,645 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 ! call(reach_error())) ) 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 -> 5350e4ca2594121b974c795f0a5f8bd0219ad1e56ba65ceaff14b5f6479d7178 [2025-03-13 21:34:30,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:34:30,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:34:30,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:34:30,897 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:34:30,898 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:34:30,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-13 21:34:32,041 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf121e41/3e11dcaac492472c8cf865cd3a40d7ed/FLAG874205722 [2025-03-13 21:34:32,286 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:34:32,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-13 21:34:32,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf121e41/3e11dcaac492472c8cf865cd3a40d7ed/FLAG874205722 [2025-03-13 21:34:32,602 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cf121e41/3e11dcaac492472c8cf865cd3a40d7ed [2025-03-13 21:34:32,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:34:32,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:34:32,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:34:32,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:34:32,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:34:32,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:32,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab1b04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32, skipping insertion in model container [2025-03-13 21:34:32,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:32,633 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:34:32,753 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-13 21:34:32,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:34:32,898 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:34:32,906 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-13 21:34:32,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:34:32,965 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:34:32,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32 WrapperNode [2025-03-13 21:34:32,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:34:32,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:34:32,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:34:32,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:34:32,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:32,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,000 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2025-03-13 21:34:33,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:34:33,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:34:33,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:34:33,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:34:33,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,019 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-13 21:34:33,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,024 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:34:33,030 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:34:33,030 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:34:33,030 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:34:33,031 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (1/1) ... [2025-03-13 21:34:33,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:34:33,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:34:33,054 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) [2025-03-13 21:34:33,056 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 [2025-03-13 21:34:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:34:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:34:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:34:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:34:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:34:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:34:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-13 21:34:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-13 21:34:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:34:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:34:33,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:34:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:34:33,071 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:34:33,151 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:34:33,153 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:34:33,267 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:34:33,268 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:34:33,268 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:34:33,330 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:34:33,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:34:33 BoogieIcfgContainer [2025-03-13 21:34:33,330 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:34:33,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:34:33,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:34:33,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:34:33,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:34:32" (1/3) ... [2025-03-13 21:34:33,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cb83e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:34:33, skipping insertion in model container [2025-03-13 21:34:33,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:32" (2/3) ... [2025-03-13 21:34:33,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cb83e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:34:33, skipping insertion in model container [2025-03-13 21:34:33,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:34:33" (3/3) ... [2025-03-13 21:34:33,338 INFO L128 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-13 21:34:33,348 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:34:33,350 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 4 procedures, 39 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-13 21:34:33,350 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:34:33,387 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:34:33,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2025-03-13 21:34:33,440 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2025-03-13 21:34:33,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:34:33,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2025-03-13 21:34:33,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2025-03-13 21:34:33,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2025-03-13 21:34:33,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:34:33,462 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=LoopHeads, 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;@1238e7c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:34:33,462 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-13 21:34:33,469 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:34:33,469 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-03-13 21:34:33,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:34:33,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:33,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:34:33,470 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-13 21:34:33,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:33,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1090067551, now seen corresponding path program 1 times [2025-03-13 21:34:33,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:33,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708557044] [2025-03-13 21:34:33,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:34:33,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:33,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-13 21:34:33,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-13 21:34:33,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:34:33,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:33,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708557044] [2025-03-13 21:34:33,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708557044] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:33,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:33,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:34:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594488899] [2025-03-13 21:34:33,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:33,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:34:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:33,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:34:33,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:34:33,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-13 21:34:33,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-13 21:34:33,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:33,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-13 21:34:33,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:34,459 INFO L124 PetriNetUnfolderBase]: 3619/5687 cut-off events. [2025-03-13 21:34:34,459 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-13 21:34:34,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11126 conditions, 5687 events. 3619/5687 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 32524 event pairs, 661 based on Foata normal form. 252/5928 useless extension candidates. Maximal degree in co-relation 11115. Up to 2841 conditions per place. [2025-03-13 21:34:34,498 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 57 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2025-03-13 21:34:34,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 277 flow [2025-03-13 21:34:34,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:34:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:34:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-03-13 21:34:34,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2025-03-13 21:34:34,515 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 4 states and 101 transitions. [2025-03-13 21:34:34,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 277 flow [2025-03-13 21:34:34,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-13 21:34:34,524 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 106 flow [2025-03-13 21:34:34,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2025-03-13 21:34:34,528 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2025-03-13 21:34:34,529 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 106 flow [2025-03-13 21:34:34,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-13 21:34:34,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:34,529 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:34:34,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:34:34,529 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-13 21:34:34,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash 962430388, now seen corresponding path program 1 times [2025-03-13 21:34:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510377359] [2025-03-13 21:34:34,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:34:34,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:34,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-13 21:34:34,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-13 21:34:34,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:34:34,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:34,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:34,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510377359] [2025-03-13 21:34:34,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510377359] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:34,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:34,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:34:34,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303751676] [2025-03-13 21:34:34,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:34,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:34:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:34,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:34:34,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:34:34,705 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-13 21:34:34,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-13 21:34:34,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:34,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-13 21:34:34,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:35,025 INFO L124 PetriNetUnfolderBase]: 2091/3295 cut-off events. [2025-03-13 21:34:35,026 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2025-03-13 21:34:35,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 3295 events. 2091/3295 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 16433 event pairs, 427 based on Foata normal form. 172/3456 useless extension candidates. Maximal degree in co-relation 7543. Up to 1128 conditions per place. [2025-03-13 21:34:35,041 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 73 selfloop transitions, 8 changer transitions 1/87 dead transitions. [2025-03-13 21:34:35,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 87 transitions, 393 flow [2025-03-13 21:34:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:34:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:34:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-03-13 21:34:35,044 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6615384615384615 [2025-03-13 21:34:35,044 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 106 flow. Second operand 5 states and 129 transitions. [2025-03-13 21:34:35,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 87 transitions, 393 flow [2025-03-13 21:34:35,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 87 transitions, 383 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-13 21:34:35,049 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 146 flow [2025-03-13 21:34:35,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2025-03-13 21:34:35,050 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2025-03-13 21:34:35,050 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 146 flow [2025-03-13 21:34:35,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-03-13 21:34:35,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:35,050 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:34:35,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:34:35,051 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-13 21:34:35,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:35,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1100019847, now seen corresponding path program 1 times [2025-03-13 21:34:35,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:35,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284046097] [2025-03-13 21:34:35,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:34:35,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:35,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:34:35,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:34:35,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:34:35,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:35,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:35,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284046097] [2025-03-13 21:34:35,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284046097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:35,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:35,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:34:35,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338344809] [2025-03-13 21:34:35,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:35,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:34:35,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:35,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:34:35,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:34:35,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-13 21:34:35,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-03-13 21:34:35,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:35,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-13 21:34:35,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:35,429 INFO L124 PetriNetUnfolderBase]: 1343/2071 cut-off events. [2025-03-13 21:34:35,429 INFO L125 PetriNetUnfolderBase]: For 1202/1202 co-relation queries the response was YES. [2025-03-13 21:34:35,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 2071 events. 1343/2071 cut-off events. For 1202/1202 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 9164 event pairs, 385 based on Foata normal form. 60/2120 useless extension candidates. Maximal degree in co-relation 5159. Up to 788 conditions per place. [2025-03-13 21:34:35,438 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 61 selfloop transitions, 11 changer transitions 1/78 dead transitions. [2025-03-13 21:34:35,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 380 flow [2025-03-13 21:34:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:34:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:34:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2025-03-13 21:34:35,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2025-03-13 21:34:35,440 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 146 flow. Second operand 6 states and 129 transitions. [2025-03-13 21:34:35,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 380 flow [2025-03-13 21:34:35,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 355 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-13 21:34:35,449 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 160 flow [2025-03-13 21:34:35,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2025-03-13 21:34:35,450 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2025-03-13 21:34:35,450 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 160 flow [2025-03-13 21:34:35,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-03-13 21:34:35,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:35,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:34:35,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:34:35,451 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-13 21:34:35,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash 759466558, now seen corresponding path program 1 times [2025-03-13 21:34:35,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:35,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598944092] [2025-03-13 21:34:35,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:34:35,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:35,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-13 21:34:35,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-13 21:34:35,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:34:35,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598944092] [2025-03-13 21:34:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598944092] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:35,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-13 21:34:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806204517] [2025-03-13 21:34:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:35,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:34:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:35,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:34:35,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:34:35,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-03-13 21:34:35,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-03-13 21:34:35,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:35,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-03-13 21:34:35,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:36,068 INFO L124 PetriNetUnfolderBase]: 2527/3899 cut-off events. [2025-03-13 21:34:36,068 INFO L125 PetriNetUnfolderBase]: For 2890/2890 co-relation queries the response was YES. [2025-03-13 21:34:36,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10074 conditions, 3899 events. 2527/3899 cut-off events. For 2890/2890 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 19762 event pairs, 588 based on Foata normal form. 16/3906 useless extension candidates. Maximal degree in co-relation 10059. Up to 1394 conditions per place. [2025-03-13 21:34:36,078 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 59 selfloop transitions, 8 changer transitions 66/137 dead transitions. [2025-03-13 21:34:36,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 137 transitions, 824 flow [2025-03-13 21:34:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-13 21:34:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-13 21:34:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2025-03-13 21:34:36,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2025-03-13 21:34:36,080 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 160 flow. Second operand 10 states and 193 transitions. [2025-03-13 21:34:36,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 137 transitions, 824 flow [2025-03-13 21:34:36,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 137 transitions, 630 flow, removed 30 selfloop flow, removed 8 redundant places. [2025-03-13 21:34:36,092 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 168 flow [2025-03-13 21:34:36,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=168, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2025-03-13 21:34:36,092 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2025-03-13 21:34:36,093 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 168 flow [2025-03-13 21:34:36,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-03-13 21:34:36,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:36,093 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:34:36,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:34:36,093 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-13 21:34:36,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:36,094 INFO L85 PathProgramCache]: Analyzing trace with hash -343254106, now seen corresponding path program 2 times [2025-03-13 21:34:36,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:36,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932140194] [2025-03-13 21:34:36,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:34:36,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:36,099 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 1 equivalence classes. [2025-03-13 21:34:36,104 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-13 21:34:36,104 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:34:36,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:36,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:36,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932140194] [2025-03-13 21:34:36,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932140194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:36,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:36,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:34:36,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405477671] [2025-03-13 21:34:36,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:36,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:34:36,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:36,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:34:36,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:34:36,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-03-13 21:34:36,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-03-13 21:34:36,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:36,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-03-13 21:34:36,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:36,625 INFO L124 PetriNetUnfolderBase]: 2816/4354 cut-off events. [2025-03-13 21:34:36,626 INFO L125 PetriNetUnfolderBase]: For 2049/2049 co-relation queries the response was YES. [2025-03-13 21:34:36,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 4354 events. 2816/4354 cut-off events. For 2049/2049 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 22585 event pairs, 716 based on Foata normal form. 8/4353 useless extension candidates. Maximal degree in co-relation 11133. Up to 1798 conditions per place. [2025-03-13 21:34:36,639 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 42 selfloop transitions, 6 changer transitions 53/105 dead transitions. [2025-03-13 21:34:36,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 570 flow [2025-03-13 21:34:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:34:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:34:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2025-03-13 21:34:36,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5427350427350427 [2025-03-13 21:34:36,645 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 168 flow. Second operand 6 states and 127 transitions. [2025-03-13 21:34:36,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 570 flow [2025-03-13 21:34:36,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 105 transitions, 548 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-13 21:34:36,649 INFO L231 Difference]: Finished difference. Result has 57 places, 39 transitions, 152 flow [2025-03-13 21:34:36,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=57, PETRI_TRANSITIONS=39} [2025-03-13 21:34:36,650 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2025-03-13 21:34:36,650 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 39 transitions, 152 flow [2025-03-13 21:34:36,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-03-13 21:34:36,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:36,650 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:34:36,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:34:36,651 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-13 21:34:36,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1680352740, now seen corresponding path program 3 times [2025-03-13 21:34:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:36,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705803762] [2025-03-13 21:34:36,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:34:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:36,657 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 1 equivalence classes. [2025-03-13 21:34:36,661 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-13 21:34:36,662 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:34:36,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:36,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:36,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705803762] [2025-03-13 21:34:36,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705803762] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:36,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:36,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:34:36,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751439277] [2025-03-13 21:34:36,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:36,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:34:36,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:36,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:34:36,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:34:36,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-03-13 21:34:36,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 39 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-03-13 21:34:36,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:36,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-03-13 21:34:36,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:36,897 INFO L124 PetriNetUnfolderBase]: 470/766 cut-off events. [2025-03-13 21:34:36,897 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2025-03-13 21:34:36,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 766 events. 470/766 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2711 event pairs, 129 based on Foata normal form. 8/772 useless extension candidates. Maximal degree in co-relation 1933. Up to 593 conditions per place. [2025-03-13 21:34:36,899 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2025-03-13 21:34:36,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 292 flow [2025-03-13 21:34:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:34:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:34:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2025-03-13 21:34:36,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39316239316239315 [2025-03-13 21:34:36,900 INFO L175 Difference]: Start difference. First operand has 57 places, 39 transitions, 152 flow. Second operand 6 states and 92 transitions. [2025-03-13 21:34:36,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 292 flow [2025-03-13 21:34:36,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 258 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-03-13 21:34:36,901 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2025-03-13 21:34:36,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2025-03-13 21:34:36,902 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2025-03-13 21:34:36,902 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2025-03-13 21:34:36,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-03-13 21:34:36,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-03-13 21:34:36,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-03-13 21:34:36,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-13 21:34:36,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-13 21:34:36,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:34:36,906 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-03-13 21:34:36,908 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-13 21:34:36,908 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-13 21:34:36,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.03 09:34:36 BasicIcfg [2025-03-13 21:34:36,914 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-13 21:34:36,914 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-13 21:34:36,914 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-13 21:34:36,914 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-13 21:34:36,915 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:34:33" (3/4) ... [2025-03-13 21:34:36,916 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-13 21:34:36,918 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-13 21:34:36,918 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-13 21:34:36,918 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-13 21:34:36,921 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2025-03-13 21:34:36,921 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-13 21:34:36,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-13 21:34:36,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-13 21:34:36,973 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-13 21:34:36,973 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-13 21:34:36,973 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-13 21:34:36,974 INFO L158 Benchmark]: Toolchain (without parser) took 4368.94ms. Allocated memory was 201.3MB in the beginning and 285.2MB in the end (delta: 83.9MB). Free memory was 152.3MB in the beginning and 193.1MB in the end (delta: -40.8MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2025-03-13 21:34:36,974 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 117.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:34:36,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.53ms. Allocated memory is still 201.3MB. Free memory was 152.3MB in the beginning and 132.1MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-13 21:34:36,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.33ms. Allocated memory is still 201.3MB. Free memory was 132.1MB in the beginning and 130.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:34:36,976 INFO L158 Benchmark]: Boogie Preprocessor took 27.91ms. Allocated memory is still 201.3MB. Free memory was 130.3MB in the beginning and 129.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:34:36,976 INFO L158 Benchmark]: IcfgBuilder took 300.60ms. Allocated memory is still 201.3MB. Free memory was 128.7MB in the beginning and 107.1MB in the end (delta: 21.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-13 21:34:36,976 INFO L158 Benchmark]: TraceAbstraction took 3581.99ms. Allocated memory was 201.3MB in the beginning and 285.2MB in the end (delta: 83.9MB). Free memory was 106.7MB in the beginning and 201.4MB in the end (delta: -94.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:34:36,977 INFO L158 Benchmark]: Witness Printer took 59.12ms. Allocated memory is still 285.2MB. Free memory was 198.3MB in the beginning and 193.1MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:34:36,978 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 117.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.53ms. Allocated memory is still 201.3MB. Free memory was 152.3MB in the beginning and 132.1MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.33ms. Allocated memory is still 201.3MB. Free memory was 132.1MB in the beginning and 130.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.91ms. Allocated memory is still 201.3MB. Free memory was 130.3MB in the beginning and 129.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 300.60ms. Allocated memory is still 201.3MB. Free memory was 128.7MB in the beginning and 107.1MB in the end (delta: 21.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3581.99ms. Allocated memory was 201.3MB in the beginning and 285.2MB in the end (delta: 83.9MB). Free memory was 106.7MB in the beginning and 201.4MB in the end (delta: -94.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 59.12ms. Allocated memory is still 285.2MB. Free memory was 198.3MB in the beginning and 193.1MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 405 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 958 IncrementalHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 3 mSDtfsCounter, 958 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=4, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 605 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-13 21:34:36,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE