./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:04:31,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:04:31,430 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:04:31,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:04:31,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:04:31,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:04:31,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:04:31,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:04:31,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:04:31,457 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:04:31,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:04:31,457 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:04:31,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:04:31,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:04:31,457 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:04:31,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:04:31,458 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:04:31,459 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:04:31,459 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:04:31,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:04:31,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:04:31,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:04:31,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:04:31,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:04:31,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:04:31,459 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:04:31,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:04:31,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:04:31,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:04:31,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:04:31,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:04:31,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:04:31,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:04:31,460 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 ! 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 -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 [2025-02-08 01:04:31,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:04:31,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:04:31,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:04:31,668 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:04:31,668 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:04:31,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-02-08 01:04:32,892 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f96dd873a/81df64069eec41b599279627461a81af/FLAGc5c6b2ced [2025-02-08 01:04:33,154 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:04:33,155 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-02-08 01:04:33,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f96dd873a/81df64069eec41b599279627461a81af/FLAGc5c6b2ced [2025-02-08 01:04:33,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f96dd873a/81df64069eec41b599279627461a81af [2025-02-08 01:04:33,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:04:33,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:04:33,453 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:04:33,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:04:33,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:04:33,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d49933d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33, skipping insertion in model container [2025-02-08 01:04:33,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,475 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:04:33,564 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-02-08 01:04:33,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:04:33,699 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:04:33,708 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-02-08 01:04:33,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:04:33,771 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:04:33,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33 WrapperNode [2025-02-08 01:04:33,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:04:33,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:04:33,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:04:33,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:04:33,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,806 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-02-08 01:04:33,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:04:33,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:04:33,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:04:33,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:04:33,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,833 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]. [2025-02-08 01:04:33,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,838 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:04:33,846 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:04:33,849 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:04:33,849 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:04:33,850 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (1/1) ... [2025-02-08 01:04:33,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:04:33,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:04:33,875 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) [2025-02-08 01:04:33,880 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 [2025-02-08 01:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:04:33,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:04:33,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:04:33,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:04:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:04:33,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:04:33,906 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:04:33,995 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:04:33,996 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:04:34,115 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:04:34,115 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:04:34,172 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:04:34,172 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:04:34,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:04:34 BoogieIcfgContainer [2025-02-08 01:04:34,174 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:04:34,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:04:34,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:04:34,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:04:34,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:04:33" (1/3) ... [2025-02-08 01:04:34,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42123477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:04:34, skipping insertion in model container [2025-02-08 01:04:34,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:04:33" (2/3) ... [2025-02-08 01:04:34,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42123477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:04:34, skipping insertion in model container [2025-02-08 01:04:34,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:04:34" (3/3) ... [2025-02-08 01:04:34,183 INFO L128 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-02-08 01:04:34,195 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:04:34,197 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:04:34,197 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:04:34,243 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:04:34,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2025-02-08 01:04:34,310 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2025-02-08 01:04:34,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:04:34,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-02-08 01:04:34,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2025-02-08 01:04:34,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2025-02-08 01:04:34,331 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:04:34,343 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;@72fccdbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:04:34,346 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:04:34,358 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:04:34,360 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2025-02-08 01:04:34,361 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:04:34,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:34,362 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:34,362 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)] === [2025-02-08 01:04:34,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash -101451644, now seen corresponding path program 1 times [2025-02-08 01:04:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:34,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890813600] [2025-02-08 01:04:34,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:34,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:34,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:04:34,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:04:34,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:34,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:34,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:34,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890813600] [2025-02-08 01:04:34,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890813600] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:34,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:34,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:04:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508348978] [2025-02-08 01:04:34,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:34,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:04:34,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:34,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:04:34,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:04:34,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:04:34,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2025-02-08 01:04:34,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:34,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:04:34,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:35,838 INFO L124 PetriNetUnfolderBase]: 8411/12378 cut-off events. [2025-02-08 01:04:35,838 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2025-02-08 01:04:35,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24657 conditions, 12378 events. 8411/12378 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 74076 event pairs, 2427 based on Foata normal form. 363/12718 useless extension candidates. Maximal degree in co-relation 24646. Up to 5690 conditions per place. [2025-02-08 01:04:35,922 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 47 selfloop transitions, 6 changer transitions 63/120 dead transitions. [2025-02-08 01:04:35,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 120 transitions, 487 flow [2025-02-08 01:04:35,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:04:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:04:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2025-02-08 01:04:35,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6278195488721805 [2025-02-08 01:04:35,934 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 167 transitions. [2025-02-08 01:04:35,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 120 transitions, 487 flow [2025-02-08 01:04:35,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 120 transitions, 482 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 01:04:35,942 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 144 flow [2025-02-08 01:04:35,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2025-02-08 01:04:35,950 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2025-02-08 01:04:35,951 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 144 flow [2025-02-08 01:04:35,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2025-02-08 01:04:35,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:35,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:35,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:04:35,951 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)] === [2025-02-08 01:04:35,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2042763259, now seen corresponding path program 1 times [2025-02-08 01:04:35,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:35,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615045278] [2025-02-08 01:04:35,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:35,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:35,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:04:35,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:04:35,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:35,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:36,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:36,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615045278] [2025-02-08 01:04:36,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615045278] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:36,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:36,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:04:36,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366729351] [2025-02-08 01:04:36,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:36,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:36,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:36,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:36,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:36,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:04:36,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-02-08 01:04:36,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:36,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:04:36,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:37,092 INFO L124 PetriNetUnfolderBase]: 7827/11573 cut-off events. [2025-02-08 01:04:37,092 INFO L125 PetriNetUnfolderBase]: For 10423/10426 co-relation queries the response was YES. [2025-02-08 01:04:37,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30997 conditions, 11573 events. 7827/11573 cut-off events. For 10423/10426 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 66169 event pairs, 950 based on Foata normal form. 346/11909 useless extension candidates. Maximal degree in co-relation 30981. Up to 4878 conditions per place. [2025-02-08 01:04:37,153 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 60 selfloop transitions, 7 changer transitions 88/159 dead transitions. [2025-02-08 01:04:37,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 159 transitions, 924 flow [2025-02-08 01:04:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:04:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:04:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215 transitions. [2025-02-08 01:04:37,157 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2025-02-08 01:04:37,158 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 144 flow. Second operand 10 states and 215 transitions. [2025-02-08 01:04:37,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 159 transitions, 924 flow [2025-02-08 01:04:37,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 159 transitions, 876 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:04:37,181 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 210 flow [2025-02-08 01:04:37,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=210, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2025-02-08 01:04:37,182 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2025-02-08 01:04:37,182 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 210 flow [2025-02-08 01:04:37,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-02-08 01:04:37,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:37,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:37,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:04:37,183 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)] === [2025-02-08 01:04:37,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash 530228549, now seen corresponding path program 1 times [2025-02-08 01:04:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:37,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291747494] [2025-02-08 01:04:37,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:37,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:04:37,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:04:37,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:37,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:37,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:37,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291747494] [2025-02-08 01:04:37,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291747494] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:37,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:37,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:04:37,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677240262] [2025-02-08 01:04:37,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:37,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:37,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:37,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:37,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:37,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:04:37,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-02-08 01:04:37,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:37,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:04:37,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:38,339 INFO L124 PetriNetUnfolderBase]: 7136/10547 cut-off events. [2025-02-08 01:04:38,340 INFO L125 PetriNetUnfolderBase]: For 23977/23989 co-relation queries the response was YES. [2025-02-08 01:04:38,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31551 conditions, 10547 events. 7136/10547 cut-off events. For 23977/23989 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 59156 event pairs, 1475 based on Foata normal form. 285/10825 useless extension candidates. Maximal degree in co-relation 31526. Up to 4685 conditions per place. [2025-02-08 01:04:38,388 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 63 selfloop transitions, 11 changer transitions 78/156 dead transitions. [2025-02-08 01:04:38,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 156 transitions, 962 flow [2025-02-08 01:04:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:04:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:04:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215 transitions. [2025-02-08 01:04:38,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5657894736842105 [2025-02-08 01:04:38,390 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 210 flow. Second operand 10 states and 215 transitions. [2025-02-08 01:04:38,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 156 transitions, 962 flow [2025-02-08 01:04:38,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 156 transitions, 909 flow, removed 24 selfloop flow, removed 3 redundant places. [2025-02-08 01:04:38,429 INFO L231 Difference]: Finished difference. Result has 72 places, 45 transitions, 294 flow [2025-02-08 01:04:38,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=294, PETRI_PLACES=72, PETRI_TRANSITIONS=45} [2025-02-08 01:04:38,430 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2025-02-08 01:04:38,430 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 45 transitions, 294 flow [2025-02-08 01:04:38,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-02-08 01:04:38,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:38,430 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:38,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:04:38,430 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)] === [2025-02-08 01:04:38,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:38,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1008661142, now seen corresponding path program 1 times [2025-02-08 01:04:38,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:38,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050665832] [2025-02-08 01:04:38,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:38,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:38,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 01:04:38,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:04:38,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:38,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:38,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:38,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050665832] [2025-02-08 01:04:38,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050665832] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:38,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:38,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:04:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869904655] [2025-02-08 01:04:38,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:38,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:04:38,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:38,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:04:38,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:04:38,527 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:04:38,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 45 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:04:38,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:38,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:04:38,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:39,194 INFO L124 PetriNetUnfolderBase]: 6615/9858 cut-off events. [2025-02-08 01:04:39,194 INFO L125 PetriNetUnfolderBase]: For 24861/24873 co-relation queries the response was YES. [2025-02-08 01:04:39,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30559 conditions, 9858 events. 6615/9858 cut-off events. For 24861/24873 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 55177 event pairs, 4303 based on Foata normal form. 250/10099 useless extension candidates. Maximal degree in co-relation 30526. Up to 7029 conditions per place. [2025-02-08 01:04:39,352 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 53 selfloop transitions, 6 changer transitions 49/112 dead transitions. [2025-02-08 01:04:39,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 112 transitions, 814 flow [2025-02-08 01:04:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:04:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:04:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2025-02-08 01:04:39,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5338345864661654 [2025-02-08 01:04:39,353 INFO L175 Difference]: Start difference. First operand has 72 places, 45 transitions, 294 flow. Second operand 7 states and 142 transitions. [2025-02-08 01:04:39,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 112 transitions, 814 flow [2025-02-08 01:04:39,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 756 flow, removed 27 selfloop flow, removed 9 redundant places. [2025-02-08 01:04:39,434 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 284 flow [2025-02-08 01:04:39,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2025-02-08 01:04:39,435 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2025-02-08 01:04:39,435 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 284 flow [2025-02-08 01:04:39,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:04:39,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:39,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:39,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:04:39,436 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)] === [2025-02-08 01:04:39,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:39,436 INFO L85 PathProgramCache]: Analyzing trace with hash 591745352, now seen corresponding path program 1 times [2025-02-08 01:04:39,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:39,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535316214] [2025-02-08 01:04:39,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:39,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:39,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 01:04:39,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 01:04:39,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:39,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:39,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:39,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535316214] [2025-02-08 01:04:39,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535316214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:39,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:39,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:04:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535001818] [2025-02-08 01:04:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:39,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:04:39,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:39,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:04:39,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:04:39,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:04:39,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2025-02-08 01:04:39,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:39,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:04:39,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:40,025 INFO L124 PetriNetUnfolderBase]: 5954/8852 cut-off events. [2025-02-08 01:04:40,025 INFO L125 PetriNetUnfolderBase]: For 18591/18591 co-relation queries the response was YES. [2025-02-08 01:04:40,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26818 conditions, 8852 events. 5954/8852 cut-off events. For 18591/18591 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 48014 event pairs, 3331 based on Foata normal form. 120/8969 useless extension candidates. Maximal degree in co-relation 26788. Up to 7422 conditions per place. [2025-02-08 01:04:40,072 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 59 selfloop transitions, 5 changer transitions 41/109 dead transitions. [2025-02-08 01:04:40,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 756 flow [2025-02-08 01:04:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:04:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:04:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2025-02-08 01:04:40,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.518796992481203 [2025-02-08 01:04:40,074 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 284 flow. Second operand 7 states and 138 transitions. [2025-02-08 01:04:40,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 756 flow [2025-02-08 01:04:40,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 109 transitions, 710 flow, removed 12 selfloop flow, removed 10 redundant places. [2025-02-08 01:04:40,101 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 281 flow [2025-02-08 01:04:40,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=281, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2025-02-08 01:04:40,102 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2025-02-08 01:04:40,102 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 281 flow [2025-02-08 01:04:40,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2025-02-08 01:04:40,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:40,102 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] [2025-02-08 01:04:40,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:04:40,102 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)] === [2025-02-08 01:04:40,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:40,103 INFO L85 PathProgramCache]: Analyzing trace with hash -494614645, now seen corresponding path program 1 times [2025-02-08 01:04:40,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:40,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395485958] [2025-02-08 01:04:40,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:40,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:40,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:04:40,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:04:40,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:40,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:40,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:40,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395485958] [2025-02-08 01:04:40,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395485958] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:40,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:40,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:04:40,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556106745] [2025-02-08 01:04:40,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:40,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:40,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:40,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:40,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:40,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:04:40,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-02-08 01:04:40,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:40,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:04:40,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:40,869 INFO L124 PetriNetUnfolderBase]: 8000/11819 cut-off events. [2025-02-08 01:04:40,869 INFO L125 PetriNetUnfolderBase]: For 21353/21359 co-relation queries the response was YES. [2025-02-08 01:04:40,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34288 conditions, 11819 events. 8000/11819 cut-off events. For 21353/21359 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 66276 event pairs, 1670 based on Foata normal form. 180/11990 useless extension candidates. Maximal degree in co-relation 34260. Up to 4450 conditions per place. [2025-02-08 01:04:40,927 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 56 selfloop transitions, 4 changer transitions 60/124 dead transitions. [2025-02-08 01:04:40,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 124 transitions, 881 flow [2025-02-08 01:04:40,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:04:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:04:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2025-02-08 01:04:40,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2025-02-08 01:04:40,929 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 281 flow. Second operand 8 states and 156 transitions. [2025-02-08 01:04:40,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 124 transitions, 881 flow [2025-02-08 01:04:40,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 124 transitions, 843 flow, removed 12 selfloop flow, removed 6 redundant places. [2025-02-08 01:04:40,964 INFO L231 Difference]: Finished difference. Result has 68 places, 40 transitions, 236 flow [2025-02-08 01:04:40,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=236, PETRI_PLACES=68, PETRI_TRANSITIONS=40} [2025-02-08 01:04:40,965 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2025-02-08 01:04:40,965 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 40 transitions, 236 flow [2025-02-08 01:04:40,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-02-08 01:04:40,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:40,965 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] [2025-02-08 01:04:40,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:04:40,966 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:40,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1793404047, now seen corresponding path program 1 times [2025-02-08 01:04:40,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:40,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934853953] [2025-02-08 01:04:40,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:40,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:40,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 01:04:40,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 01:04:40,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:40,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:41,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:41,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934853953] [2025-02-08 01:04:41,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934853953] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:41,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:41,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:04:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833869990] [2025-02-08 01:04:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:41,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:04:41,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:41,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:04:41,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:04:41,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-08 01:04:41,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 40 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-02-08 01:04:41,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:41,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-08 01:04:41,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:41,321 INFO L124 PetriNetUnfolderBase]: 2832/4530 cut-off events. [2025-02-08 01:04:41,321 INFO L125 PetriNetUnfolderBase]: For 8406/8406 co-relation queries the response was YES. [2025-02-08 01:04:41,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12940 conditions, 4530 events. 2832/4530 cut-off events. For 8406/8406 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 25202 event pairs, 428 based on Foata normal form. 229/4756 useless extension candidates. Maximal degree in co-relation 12910. Up to 2373 conditions per place. [2025-02-08 01:04:41,341 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 70 selfloop transitions, 5 changer transitions 1/81 dead transitions. [2025-02-08 01:04:41,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 654 flow [2025-02-08 01:04:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:04:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:04:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-02-08 01:04:41,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2025-02-08 01:04:41,342 INFO L175 Difference]: Start difference. First operand has 68 places, 40 transitions, 236 flow. Second operand 4 states and 96 transitions. [2025-02-08 01:04:41,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 654 flow [2025-02-08 01:04:41,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 553 flow, removed 25 selfloop flow, removed 12 redundant places. [2025-02-08 01:04:41,354 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 221 flow [2025-02-08 01:04:41,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2025-02-08 01:04:41,354 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2025-02-08 01:04:41,354 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 221 flow [2025-02-08 01:04:41,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2025-02-08 01:04:41,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:41,355 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] [2025-02-08 01:04:41,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:04:41,355 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:41,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash -2053533880, now seen corresponding path program 1 times [2025-02-08 01:04:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:41,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628412517] [2025-02-08 01:04:41,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:41,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:04:41,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:04:41,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:41,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628412517] [2025-02-08 01:04:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628412517] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:41,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:04:41,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734028655] [2025-02-08 01:04:41,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:41,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:04:41,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:41,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:04:41,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:04:41,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-08 01:04:41,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:04:41,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:41,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-08 01:04:41,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:41,585 INFO L124 PetriNetUnfolderBase]: 1798/2899 cut-off events. [2025-02-08 01:04:41,586 INFO L125 PetriNetUnfolderBase]: For 3854/3854 co-relation queries the response was YES. [2025-02-08 01:04:41,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 2899 events. 1798/2899 cut-off events. For 3854/3854 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 14484 event pairs, 214 based on Foata normal form. 176/3072 useless extension candidates. Maximal degree in co-relation 8318. Up to 977 conditions per place. [2025-02-08 01:04:41,595 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 73 selfloop transitions, 8 changer transitions 2/88 dead transitions. [2025-02-08 01:04:41,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 88 transitions, 617 flow [2025-02-08 01:04:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:04:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:04:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-02-08 01:04:41,596 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6157894736842106 [2025-02-08 01:04:41,596 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 221 flow. Second operand 5 states and 117 transitions. [2025-02-08 01:04:41,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 88 transitions, 617 flow [2025-02-08 01:04:41,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 607 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 01:04:41,601 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 261 flow [2025-02-08 01:04:41,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2025-02-08 01:04:41,602 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2025-02-08 01:04:41,602 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 261 flow [2025-02-08 01:04:41,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:04:41,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:41,602 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] [2025-02-08 01:04:41,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 01:04:41,602 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:41,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1738228387, now seen corresponding path program 1 times [2025-02-08 01:04:41,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:41,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984478522] [2025-02-08 01:04:41,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:41,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:41,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 01:04:41,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 01:04:41,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:41,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:41,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:41,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:41,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984478522] [2025-02-08 01:04:41,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984478522] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:41,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:41,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:04:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291939237] [2025-02-08 01:04:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:41,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:41,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:41,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:41,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:41,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-08 01:04:41,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2025-02-08 01:04:41,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:41,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-08 01:04:41,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:42,024 INFO L124 PetriNetUnfolderBase]: 1090/1727 cut-off events. [2025-02-08 01:04:42,024 INFO L125 PetriNetUnfolderBase]: For 3288/3288 co-relation queries the response was YES. [2025-02-08 01:04:42,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5506 conditions, 1727 events. 1090/1727 cut-off events. For 3288/3288 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7479 event pairs, 158 based on Foata normal form. 80/1804 useless extension candidates. Maximal degree in co-relation 5482. Up to 568 conditions per place. [2025-02-08 01:04:42,039 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 55 selfloop transitions, 11 changer transitions 11/82 dead transitions. [2025-02-08 01:04:42,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 82 transitions, 587 flow [2025-02-08 01:04:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:04:42,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:04:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2025-02-08 01:04:42,044 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2025-02-08 01:04:42,044 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 261 flow. Second operand 6 states and 120 transitions. [2025-02-08 01:04:42,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 82 transitions, 587 flow [2025-02-08 01:04:42,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 533 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-02-08 01:04:42,056 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 239 flow [2025-02-08 01:04:42,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2025-02-08 01:04:42,057 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2025-02-08 01:04:42,057 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 239 flow [2025-02-08 01:04:42,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2025-02-08 01:04:42,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:42,058 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] [2025-02-08 01:04:42,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 01:04:42,058 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:42,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1269770264, now seen corresponding path program 1 times [2025-02-08 01:04:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:42,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174168609] [2025-02-08 01:04:42,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:04:42,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:42,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:04:42,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:04:42,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:04:42,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:42,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174168609] [2025-02-08 01:04:42,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174168609] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:42,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:42,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:04:42,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428547731] [2025-02-08 01:04:42,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:42,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:04:42,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:42,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:04:42,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:04:42,245 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:04:42,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 239 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2025-02-08 01:04:42,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:42,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:04:42,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:42,496 INFO L124 PetriNetUnfolderBase]: 1286/2034 cut-off events. [2025-02-08 01:04:42,496 INFO L125 PetriNetUnfolderBase]: For 3161/3161 co-relation queries the response was YES. [2025-02-08 01:04:42,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 2034 events. 1286/2034 cut-off events. For 3161/3161 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9201 event pairs, 301 based on Foata normal form. 8/2040 useless extension candidates. Maximal degree in co-relation 6319. Up to 1262 conditions per place. [2025-02-08 01:04:42,502 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 5 changer transitions 45/96 dead transitions. [2025-02-08 01:04:42,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 96 transitions, 679 flow [2025-02-08 01:04:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:04:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:04:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2025-02-08 01:04:42,503 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2025-02-08 01:04:42,504 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 239 flow. Second operand 7 states and 123 transitions. [2025-02-08 01:04:42,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 96 transitions, 679 flow [2025-02-08 01:04:42,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 521 flow, removed 20 selfloop flow, removed 10 redundant places. [2025-02-08 01:04:42,509 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 154 flow [2025-02-08 01:04:42,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2025-02-08 01:04:42,511 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2025-02-08 01:04:42,511 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 154 flow [2025-02-08 01:04:42,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2025-02-08 01:04:42,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:42,511 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] [2025-02-08 01:04:42,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 01:04:42,512 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:42,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash -819243650, now seen corresponding path program 2 times [2025-02-08 01:04:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:42,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020809788] [2025-02-08 01:04:42,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:04:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:42,519 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:04:42,523 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:04:42,523 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:04:42,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:42,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:42,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020809788] [2025-02-08 01:04:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020809788] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:42,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:42,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:04:42,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011224537] [2025-02-08 01:04:42,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:42,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:42,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:42,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:42,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:42,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:04:42,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2025-02-08 01:04:42,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:42,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:04:42,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:42,738 INFO L124 PetriNetUnfolderBase]: 374/606 cut-off events. [2025-02-08 01:04:42,738 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2025-02-08 01:04:42,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 606 events. 374/606 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1980 event pairs, 38 based on Foata normal form. 8/613 useless extension candidates. Maximal degree in co-relation 1561. Up to 444 conditions per place. [2025-02-08 01:04:42,739 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2025-02-08 01:04:42,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 300 flow [2025-02-08 01:04:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:04:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:04:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2025-02-08 01:04:42,740 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3533834586466165 [2025-02-08 01:04:42,740 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 154 flow. Second operand 7 states and 94 transitions. [2025-02-08 01:04:42,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 300 flow [2025-02-08 01:04:42,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 254 flow, removed 5 selfloop flow, removed 12 redundant places. [2025-02-08 01:04:42,741 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2025-02-08 01:04:42,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2025-02-08 01:04:42,742 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2025-02-08 01:04:42,742 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2025-02-08 01:04:42,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2025-02-08 01:04:42,745 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-02-08 01:04:42,745 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-02-08 01:04:42,745 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-08 01:04:42,746 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-08 01:04:42,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 01:04:42,746 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:42,748 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 01:04:42,748 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 01:04:42,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:04:42 BasicIcfg [2025-02-08 01:04:42,754 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 01:04:42,755 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 01:04:42,755 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 01:04:42,755 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 01:04:42,756 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:04:34" (3/4) ... [2025-02-08 01:04:42,757 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 01:04:42,759 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-02-08 01:04:42,759 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-02-08 01:04:42,759 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-02-08 01:04:42,762 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-02-08 01:04:42,762 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-08 01:04:42,762 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-08 01:04:42,762 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-08 01:04:42,811 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 01:04:42,811 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 01:04:42,811 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 01:04:42,811 INFO L158 Benchmark]: Toolchain (without parser) took 9358.83ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 111.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 393.1MB. Max. memory is 16.1GB. [2025-02-08 01:04:42,812 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:04:42,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.24ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 91.1MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:04:42,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.69ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:04:42,812 INFO L158 Benchmark]: Boogie Preprocessor took 38.15ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 88.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:04:42,812 INFO L158 Benchmark]: IcfgBuilder took 328.30ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 67.7MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:04:42,812 INFO L158 Benchmark]: TraceAbstraction took 8578.07ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 67.2MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 351.1MB. Max. memory is 16.1GB. [2025-02-08 01:04:42,812 INFO L158 Benchmark]: Witness Printer took 55.97ms. Allocated memory is still 1.7GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:04:42,813 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.24ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 91.1MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.69ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.15ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 88.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 328.30ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 67.7MB in the end (delta: 20.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8578.07ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 67.2MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 351.1MB. Max. memory is 16.1GB. * Witness Printer took 55.97ms. Allocated memory is still 1.7GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.1MB). There was no memory consumed. 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, 62 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: 8.5s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 778 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 772 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1849 IncrementalHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 12 mSDtfsCounter, 1849 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=3, InterpolantAutomatonStates: 78, 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, 1.5s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2025-02-08 01:04:42,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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