./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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/triangular-1.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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:21:57,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:21:57,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:21:57,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:21:57,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:21:58,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:21:58,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:21:58,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:21:58,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:21:58,036 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:21:58,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:21:58,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:21:58,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:21:58,036 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:21:58,036 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:21:58,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:21:58,037 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:21:58,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:21:58,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:21:58,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:21:58,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:21:58,038 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 -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2025-01-09 16:21:58,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:21:58,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:21:58,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:21:58,296 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:21:58,297 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:21:58,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2025-01-09 16:21:59,529 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d18899892/9a7ac4e101e447f38d999901b2c37ba7/FLAGe94a761ae [2025-01-09 16:21:59,857 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:21:59,857 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2025-01-09 16:21:59,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d18899892/9a7ac4e101e447f38d999901b2c37ba7/FLAGe94a761ae [2025-01-09 16:22:00,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d18899892/9a7ac4e101e447f38d999901b2c37ba7 [2025-01-09 16:22:00,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:22:00,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:22:00,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:22:00,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:22:00,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:22:00,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c79c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00, skipping insertion in model container [2025-01-09 16:22:00,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,178 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:22:00,362 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/triangular-1.i[30950,30963] [2025-01-09 16:22:00,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:22:00,374 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:22:00,422 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/triangular-1.i[30950,30963] [2025-01-09 16:22:00,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:22:00,450 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:22:00,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00 WrapperNode [2025-01-09 16:22:00,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:22:00,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:22:00,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:22:00,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:22:00,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,483 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2025-01-09 16:22:00,485 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:22:00,486 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:22:00,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:22:00,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:22:00,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,495 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,509 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]. [2025-01-09 16:22:00,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,516 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,520 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:22:00,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:22:00,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:22:00,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:22:00,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (1/1) ... [2025-01-09 16:22:00,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:22:00,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:00,566 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) [2025-01-09 16:22:00,569 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 [2025-01-09 16:22:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-01-09 16:22:00,590 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-01-09 16:22:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-01-09 16:22:00,590 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-01-09 16:22:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 16:22:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:22:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:22:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 16:22:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:22:00,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:22:00,592 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:22:00,704 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:22:00,706 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:22:00,812 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:22:00,812 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:22:00,890 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:22:00,891 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:22:00,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:22:00 BoogieIcfgContainer [2025-01-09 16:22:00,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:22:00,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:22:00,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:22:00,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:22:00,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:22:00" (1/3) ... [2025-01-09 16:22:00,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbf743f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:22:00, skipping insertion in model container [2025-01-09 16:22:00,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:00" (2/3) ... [2025-01-09 16:22:00,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbf743f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:22:00, skipping insertion in model container [2025-01-09 16:22:00,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:22:00" (3/3) ... [2025-01-09 16:22:00,901 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2025-01-09 16:22:00,913 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:22:00,915 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-1.i that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 16:22:00,916 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:22:00,955 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 16:22:00,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2025-01-09 16:22:01,008 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2025-01-09 16:22:01,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:22:01,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-01-09 16:22:01,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2025-01-09 16:22:01,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2025-01-09 16:22:01,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:22:01,043 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;@5788e83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:22:01,043 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-09 16:22:01,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:22:01,056 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-01-09 16:22:01,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:22:01,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:01,057 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:01,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:01,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:01,064 INFO L85 PathProgramCache]: Analyzing trace with hash -60315798, now seen corresponding path program 1 times [2025-01-09 16:22:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:01,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844071000] [2025-01-09 16:22:01,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:01,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:01,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 16:22:01,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 16:22:01,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:01,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:01,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:01,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844071000] [2025-01-09 16:22:01,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844071000] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:01,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:01,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:22:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140562221] [2025-01-09 16:22:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:01,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:22:01,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:01,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:22:01,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:22:01,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:01,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2025-01-09 16:22:01,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:01,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:01,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:01,768 INFO L124 PetriNetUnfolderBase]: 321/539 cut-off events. [2025-01-09 16:22:01,769 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 16:22:01,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 539 events. 321/539 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2106 event pairs, 62 based on Foata normal form. 12/534 useless extension candidates. Maximal degree in co-relation 1041. Up to 221 conditions per place. [2025-01-09 16:22:01,778 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2025-01-09 16:22:01,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2025-01-09 16:22:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:22:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:22:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2025-01-09 16:22:01,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-01-09 16:22:01,796 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2025-01-09 16:22:01,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2025-01-09 16:22:01,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 16:22:01,806 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2025-01-09 16:22:01,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2025-01-09 16:22:01,812 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2025-01-09 16:22:01,812 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2025-01-09 16:22:01,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2025-01-09 16:22:01,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:01,813 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:01,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:22:01,813 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:01,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:01,814 INFO L85 PathProgramCache]: Analyzing trace with hash -39912258, now seen corresponding path program 1 times [2025-01-09 16:22:01,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:01,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210536166] [2025-01-09 16:22:01,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:01,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:01,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 16:22:01,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:22:01,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:01,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:02,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210536166] [2025-01-09 16:22:02,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210536166] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:02,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:02,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:22:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844028350] [2025-01-09 16:22:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:02,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:22:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:02,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:22:02,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:22:02,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:02,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2025-01-09 16:22:02,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:02,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:02,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:02,221 INFO L124 PetriNetUnfolderBase]: 382/686 cut-off events. [2025-01-09 16:22:02,221 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2025-01-09 16:22:02,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 686 events. 382/686 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2880 event pairs, 65 based on Foata normal form. 27/709 useless extension candidates. Maximal degree in co-relation 1569. Up to 246 conditions per place. [2025-01-09 16:22:02,225 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2025-01-09 16:22:02,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2025-01-09 16:22:02,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:22:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:22:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2025-01-09 16:22:02,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-01-09 16:22:02,226 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2025-01-09 16:22:02,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2025-01-09 16:22:02,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-01-09 16:22:02,229 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2025-01-09 16:22:02,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2025-01-09 16:22:02,230 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2025-01-09 16:22:02,230 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2025-01-09 16:22:02,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2025-01-09 16:22:02,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:02,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:02,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:22:02,230 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:02,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash -908019650, now seen corresponding path program 2 times [2025-01-09 16:22:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:02,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069704198] [2025-01-09 16:22:02,231 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:02,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:02,236 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-01-09 16:22:02,239 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:22:02,239 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:22:02,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:02,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069704198] [2025-01-09 16:22:02,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069704198] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:02,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:02,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:22:02,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581264308] [2025-01-09 16:22:02,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:02,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:22:02,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:02,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:22:02,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:22:02,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:02,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2025-01-09 16:22:02,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:02,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:02,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:02,489 INFO L124 PetriNetUnfolderBase]: 328/602 cut-off events. [2025-01-09 16:22:02,489 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2025-01-09 16:22:02,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1731 conditions, 602 events. 328/602 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2501 event pairs, 65 based on Foata normal form. 45/643 useless extension candidates. Maximal degree in co-relation 1710. Up to 234 conditions per place. [2025-01-09 16:22:02,492 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2025-01-09 16:22:02,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2025-01-09 16:22:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:22:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:22:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2025-01-09 16:22:02,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2025-01-09 16:22:02,494 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2025-01-09 16:22:02,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2025-01-09 16:22:02,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-01-09 16:22:02,498 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2025-01-09 16:22:02,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2025-01-09 16:22:02,499 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2025-01-09 16:22:02,499 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2025-01-09 16:22:02,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2025-01-09 16:22:02,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:02,499 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:02,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:22:02,499 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:02,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:02,500 INFO L85 PathProgramCache]: Analyzing trace with hash 382127805, now seen corresponding path program 1 times [2025-01-09 16:22:02,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:02,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255409659] [2025-01-09 16:22:02,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:02,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:02,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:22:02,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:22:02,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:02,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:02,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:02,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255409659] [2025-01-09 16:22:02,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255409659] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:02,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:02,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:22:02,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922143705] [2025-01-09 16:22:02,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:02,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:22:02,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:02,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:22:02,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:22:02,599 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:02,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:22:02,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:02,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:02,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:02,787 INFO L124 PetriNetUnfolderBase]: 337/611 cut-off events. [2025-01-09 16:22:02,787 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2025-01-09 16:22:02,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 611 events. 337/611 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2546 event pairs, 74 based on Foata normal form. 18/625 useless extension candidates. Maximal degree in co-relation 1910. Up to 237 conditions per place. [2025-01-09 16:22:02,790 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 16 changer transitions 24/89 dead transitions. [2025-01-09 16:22:02,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 607 flow [2025-01-09 16:22:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:22:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-09 16:22:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2025-01-09 16:22:02,792 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-01-09 16:22:02,792 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 11 states and 135 transitions. [2025-01-09 16:22:02,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 607 flow [2025-01-09 16:22:02,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 540 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-01-09 16:22:02,802 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 279 flow [2025-01-09 16:22:02,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=279, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2025-01-09 16:22:02,803 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2025-01-09 16:22:02,803 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 279 flow [2025-01-09 16:22:02,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:22:02,803 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:02,803 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:02,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:22:02,803 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:02,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:02,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1499908535, now seen corresponding path program 2 times [2025-01-09 16:22:02,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:02,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903805999] [2025-01-09 16:22:02,804 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:02,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:02,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:22:02,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:22:02,812 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:22:02,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:02,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903805999] [2025-01-09 16:22:02,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903805999] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:02,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:02,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:22:02,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543772779] [2025-01-09 16:22:02,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:02,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:22:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:02,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:22:02,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:22:02,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:02,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:22:02,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:02,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:02,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:03,144 INFO L124 PetriNetUnfolderBase]: 445/798 cut-off events. [2025-01-09 16:22:03,145 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2025-01-09 16:22:03,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 798 events. 445/798 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3421 event pairs, 59 based on Foata normal form. 27/819 useless extension candidates. Maximal degree in co-relation 2597. Up to 151 conditions per place. [2025-01-09 16:22:03,148 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 23 changer transitions 30/100 dead transitions. [2025-01-09 16:22:03,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 100 transitions, 739 flow [2025-01-09 16:22:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:22:03,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-09 16:22:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2025-01-09 16:22:03,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2025-01-09 16:22:03,152 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 279 flow. Second operand 11 states and 138 transitions. [2025-01-09 16:22:03,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 100 transitions, 739 flow [2025-01-09 16:22:03,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 685 flow, removed 21 selfloop flow, removed 4 redundant places. [2025-01-09 16:22:03,163 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 390 flow [2025-01-09 16:22:03,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=390, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2025-01-09 16:22:03,164 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2025-01-09 16:22:03,164 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 390 flow [2025-01-09 16:22:03,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:22:03,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:03,164 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:03,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:22:03,165 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:03,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash 820165627, now seen corresponding path program 1 times [2025-01-09 16:22:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681208361] [2025-01-09 16:22:03,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:03,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:03,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:22:03,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:03,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:03,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:03,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681208361] [2025-01-09 16:22:03,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681208361] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835272489] [2025-01-09 16:22:03,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:03,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:03,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:03,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:22:03,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:22:03,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:22:03,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:03,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:03,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:03,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 16:22:03,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:03,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:03,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835272489] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:03,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:03,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-09 16:22:03,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191037962] [2025-01-09 16:22:03,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:03,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 16:22:03,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:03,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 16:22:03,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:22:03,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:03,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 390 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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) [2025-01-09 16:22:03,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:03,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:03,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:03,869 INFO L124 PetriNetUnfolderBase]: 571/1049 cut-off events. [2025-01-09 16:22:03,870 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2025-01-09 16:22:03,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 1049 events. 571/1049 cut-off events. For 6872/6872 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4385 event pairs, 137 based on Foata normal form. 63/1108 useless extension candidates. Maximal degree in co-relation 4106. Up to 486 conditions per place. [2025-01-09 16:22:03,875 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 64 selfloop transitions, 17 changer transitions 67/151 dead transitions. [2025-01-09 16:22:03,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 151 transitions, 1346 flow [2025-01-09 16:22:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 16:22:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-09 16:22:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2025-01-09 16:22:03,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2025-01-09 16:22:03,877 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 390 flow. Second operand 19 states and 231 transitions. [2025-01-09 16:22:03,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 151 transitions, 1346 flow [2025-01-09 16:22:03,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 151 transitions, 1267 flow, removed 32 selfloop flow, removed 5 redundant places. [2025-01-09 16:22:03,887 INFO L231 Difference]: Finished difference. Result has 88 places, 51 transitions, 521 flow [2025-01-09 16:22:03,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=521, PETRI_PLACES=88, PETRI_TRANSITIONS=51} [2025-01-09 16:22:03,887 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2025-01-09 16:22:03,887 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 51 transitions, 521 flow [2025-01-09 16:22:03,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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) [2025-01-09 16:22:03,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:03,888 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:03,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:22:04,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:04,089 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:04,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:04,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1577438379, now seen corresponding path program 2 times [2025-01-09 16:22:04,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:04,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141103804] [2025-01-09 16:22:04,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:04,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:04,095 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:22:04,103 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:04,104 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:22:04,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:04,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:04,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141103804] [2025-01-09 16:22:04,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141103804] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:04,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:04,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:22:04,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309829272] [2025-01-09 16:22:04,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:04,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 16:22:04,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:04,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 16:22:04,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:22:04,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:04,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 51 transitions, 521 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2025-01-09 16:22:04,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:04,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:04,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:04,599 INFO L124 PetriNetUnfolderBase]: 652/1216 cut-off events. [2025-01-09 16:22:04,600 INFO L125 PetriNetUnfolderBase]: For 19130/19130 co-relation queries the response was YES. [2025-01-09 16:22:04,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6061 conditions, 1216 events. 652/1216 cut-off events. For 19130/19130 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5659 event pairs, 132 based on Foata normal form. 27/1239 useless extension candidates. Maximal degree in co-relation 6018. Up to 483 conditions per place. [2025-01-09 16:22:04,612 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 76 selfloop transitions, 23 changer transitions 31/133 dead transitions. [2025-01-09 16:22:04,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 1509 flow [2025-01-09 16:22:04,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 16:22:04,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-09 16:22:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 187 transitions. [2025-01-09 16:22:04,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2025-01-09 16:22:04,614 INFO L175 Difference]: Start difference. First operand has 88 places, 51 transitions, 521 flow. Second operand 15 states and 187 transitions. [2025-01-09 16:22:04,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 1509 flow [2025-01-09 16:22:04,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 1211 flow, removed 138 selfloop flow, removed 12 redundant places. [2025-01-09 16:22:04,636 INFO L231 Difference]: Finished difference. Result has 90 places, 57 transitions, 583 flow [2025-01-09 16:22:04,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=583, PETRI_PLACES=90, PETRI_TRANSITIONS=57} [2025-01-09 16:22:04,637 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2025-01-09 16:22:04,637 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 57 transitions, 583 flow [2025-01-09 16:22:04,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 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) [2025-01-09 16:22:04,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:04,637 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:04,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:22:04,637 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:04,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:04,638 INFO L85 PathProgramCache]: Analyzing trace with hash 133024501, now seen corresponding path program 3 times [2025-01-09 16:22:04,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:04,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429350400] [2025-01-09 16:22:04,638 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:22:04,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:04,647 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:22:04,653 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:04,656 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:22:04,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:04,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429350400] [2025-01-09 16:22:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429350400] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126907051] [2025-01-09 16:22:04,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:22:04,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:04,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:04,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:22:04,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:22:04,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:22:04,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:04,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:22:04,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:04,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 16:22:04,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:04,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:05,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126907051] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:05,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:05,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-09 16:22:05,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278810792] [2025-01-09 16:22:05,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:05,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 16:22:05,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:05,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 16:22:05,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:22:05,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:05,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 57 transitions, 583 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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) [2025-01-09 16:22:05,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:05,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:05,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:05,933 INFO L124 PetriNetUnfolderBase]: 814/1488 cut-off events. [2025-01-09 16:22:05,934 INFO L125 PetriNetUnfolderBase]: For 23715/23715 co-relation queries the response was YES. [2025-01-09 16:22:05,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7553 conditions, 1488 events. 814/1488 cut-off events. For 23715/23715 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6939 event pairs, 72 based on Foata normal form. 81/1565 useless extension candidates. Maximal degree in co-relation 7510. Up to 237 conditions per place. [2025-01-09 16:22:05,945 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 78 selfloop transitions, 45 changer transitions 81/207 dead transitions. [2025-01-09 16:22:05,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 207 transitions, 2402 flow [2025-01-09 16:22:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 16:22:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-01-09 16:22:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 308 transitions. [2025-01-09 16:22:05,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2025-01-09 16:22:05,947 INFO L175 Difference]: Start difference. First operand has 90 places, 57 transitions, 583 flow. Second operand 25 states and 308 transitions. [2025-01-09 16:22:05,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 207 transitions, 2402 flow [2025-01-09 16:22:05,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 207 transitions, 2182 flow, removed 94 selfloop flow, removed 10 redundant places. [2025-01-09 16:22:05,976 INFO L231 Difference]: Finished difference. Result has 117 places, 69 transitions, 910 flow [2025-01-09 16:22:05,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=910, PETRI_PLACES=117, PETRI_TRANSITIONS=69} [2025-01-09 16:22:05,978 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 91 predicate places. [2025-01-09 16:22:05,978 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 69 transitions, 910 flow [2025-01-09 16:22:05,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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) [2025-01-09 16:22:05,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:05,979 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:05,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 16:22:06,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:06,183 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:06,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash -130426910, now seen corresponding path program 1 times [2025-01-09 16:22:06,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:06,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87758560] [2025-01-09 16:22:06,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:06,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:06,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 16:22:06,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 16:22:06,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:06,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:06,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:06,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87758560] [2025-01-09 16:22:06,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87758560] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:06,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14329870] [2025-01-09 16:22:06,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:06,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:06,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:06,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:22:06,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:22:06,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 16:22:06,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 16:22:06,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:06,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:06,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:22:06,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:06,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:06,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14329870] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:06,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:06,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-01-09 16:22:06,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794553935] [2025-01-09 16:22:06,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:06,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:22:06,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:06,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:22:06,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:22:06,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:06,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 69 transitions, 910 flow. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 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) [2025-01-09 16:22:06,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:06,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:06,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:07,403 INFO L124 PetriNetUnfolderBase]: 1129/2118 cut-off events. [2025-01-09 16:22:07,404 INFO L125 PetriNetUnfolderBase]: For 69281/69281 co-relation queries the response was YES. [2025-01-09 16:22:07,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13162 conditions, 2118 events. 1129/2118 cut-off events. For 69281/69281 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 11328 event pairs, 70 based on Foata normal form. 72/2186 useless extension candidates. Maximal degree in co-relation 13106. Up to 400 conditions per place. [2025-01-09 16:22:07,420 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 90 selfloop transitions, 66 changer transitions 88/247 dead transitions. [2025-01-09 16:22:07,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 247 transitions, 3782 flow [2025-01-09 16:22:07,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 16:22:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-01-09 16:22:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 341 transitions. [2025-01-09 16:22:07,422 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5074404761904762 [2025-01-09 16:22:07,422 INFO L175 Difference]: Start difference. First operand has 117 places, 69 transitions, 910 flow. Second operand 28 states and 341 transitions. [2025-01-09 16:22:07,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 247 transitions, 3782 flow [2025-01-09 16:22:07,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 247 transitions, 3161 flow, removed 288 selfloop flow, removed 17 redundant places. [2025-01-09 16:22:07,488 INFO L231 Difference]: Finished difference. Result has 138 places, 97 transitions, 1499 flow [2025-01-09 16:22:07,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1499, PETRI_PLACES=138, PETRI_TRANSITIONS=97} [2025-01-09 16:22:07,489 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 112 predicate places. [2025-01-09 16:22:07,490 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 97 transitions, 1499 flow [2025-01-09 16:22:07,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 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) [2025-01-09 16:22:07,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:07,490 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:07,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 16:22:07,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:07,691 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:07,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:07,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2115303411, now seen corresponding path program 2 times [2025-01-09 16:22:07,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:07,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440588299] [2025-01-09 16:22:07,692 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:07,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:07,697 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:22:07,703 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:22:07,706 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:22:07,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:07,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440588299] [2025-01-09 16:22:07,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440588299] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256637069] [2025-01-09 16:22:07,916 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:07,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:07,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:07,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:22:07,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:22:07,955 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:22:07,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:22:07,965 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:22:07,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:07,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 16:22:07,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:08,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:08,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256637069] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:08,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:08,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2025-01-09 16:22:08,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734869927] [2025-01-09 16:22:08,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:08,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:22:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:08,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:22:08,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:22:08,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:08,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 97 transitions, 1499 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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) [2025-01-09 16:22:08,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:08,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:08,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:09,016 INFO L124 PetriNetUnfolderBase]: 1462/2746 cut-off events. [2025-01-09 16:22:09,016 INFO L125 PetriNetUnfolderBase]: For 144195/144195 co-relation queries the response was YES. [2025-01-09 16:22:09,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19613 conditions, 2746 events. 1462/2746 cut-off events. For 144195/144195 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14514 event pairs, 38 based on Foata normal form. 63/2805 useless extension candidates. Maximal degree in co-relation 19547. Up to 543 conditions per place. [2025-01-09 16:22:09,043 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 104 selfloop transitions, 100 changer transitions 92/299 dead transitions. [2025-01-09 16:22:09,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 299 transitions, 5332 flow [2025-01-09 16:22:09,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 16:22:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-01-09 16:22:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 393 transitions. [2025-01-09 16:22:09,045 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2025-01-09 16:22:09,046 INFO L175 Difference]: Start difference. First operand has 138 places, 97 transitions, 1499 flow. Second operand 32 states and 393 transitions. [2025-01-09 16:22:09,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 299 transitions, 5332 flow [2025-01-09 16:22:09,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 299 transitions, 4109 flow, removed 587 selfloop flow, removed 15 redundant places. [2025-01-09 16:22:09,159 INFO L231 Difference]: Finished difference. Result has 164 places, 125 transitions, 2048 flow [2025-01-09 16:22:09,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2048, PETRI_PLACES=164, PETRI_TRANSITIONS=125} [2025-01-09 16:22:09,161 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 138 predicate places. [2025-01-09 16:22:09,161 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 125 transitions, 2048 flow [2025-01-09 16:22:09,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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) [2025-01-09 16:22:09,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:09,161 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:09,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 16:22:09,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-09 16:22:09,362 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:09,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash 429617929, now seen corresponding path program 3 times [2025-01-09 16:22:09,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:09,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443199507] [2025-01-09 16:22:09,364 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:22:09,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:09,369 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 6 equivalence classes. [2025-01-09 16:22:09,380 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:22:09,380 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 16:22:09,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443199507] [2025-01-09 16:22:09,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443199507] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199608275] [2025-01-09 16:22:09,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:22:09,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:09,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:09,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:22:09,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 16:22:09,629 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 6 equivalence classes. [2025-01-09 16:22:09,642 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:22:09,643 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 16:22:09,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:09,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 16:22:09,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:09,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:09,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199608275] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:09,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2025-01-09 16:22:09,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558639302] [2025-01-09 16:22:09,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:09,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 16:22:09,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:09,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 16:22:09,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2025-01-09 16:22:09,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:09,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 125 transitions, 2048 flow. Second operand has 27 states, 27 states have (on average 7.074074074074074) internal successors, (191), 27 states have internal predecessors, (191), 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) [2025-01-09 16:22:09,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:09,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:09,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:10,824 INFO L124 PetriNetUnfolderBase]: 1732/3223 cut-off events. [2025-01-09 16:22:10,824 INFO L125 PetriNetUnfolderBase]: For 176202/176202 co-relation queries the response was YES. [2025-01-09 16:22:10,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22992 conditions, 3223 events. 1732/3223 cut-off events. For 176202/176202 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17083 event pairs, 92 based on Foata normal form. 36/3255 useless extension candidates. Maximal degree in co-relation 22915. Up to 633 conditions per place. [2025-01-09 16:22:10,855 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 121 selfloop transitions, 120 changer transitions 77/321 dead transitions. [2025-01-09 16:22:10,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 321 transitions, 5717 flow [2025-01-09 16:22:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 16:22:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-01-09 16:22:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 391 transitions. [2025-01-09 16:22:10,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5091145833333334 [2025-01-09 16:22:10,857 INFO L175 Difference]: Start difference. First operand has 164 places, 125 transitions, 2048 flow. Second operand 32 states and 391 transitions. [2025-01-09 16:22:10,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 321 transitions, 5717 flow [2025-01-09 16:22:11,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 321 transitions, 4619 flow, removed 514 selfloop flow, removed 20 redundant places. [2025-01-09 16:22:11,047 INFO L231 Difference]: Finished difference. Result has 180 places, 149 transitions, 2386 flow [2025-01-09 16:22:11,047 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2386, PETRI_PLACES=180, PETRI_TRANSITIONS=149} [2025-01-09 16:22:11,048 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 154 predicate places. [2025-01-09 16:22:11,048 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 149 transitions, 2386 flow [2025-01-09 16:22:11,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.074074074074074) internal successors, (191), 27 states have internal predecessors, (191), 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) [2025-01-09 16:22:11,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:11,048 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:11,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 16:22:11,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-09 16:22:11,250 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:11,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash 347411116, now seen corresponding path program 4 times [2025-01-09 16:22:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:11,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496679724] [2025-01-09 16:22:11,254 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:22:11,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:11,262 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-01-09 16:22:11,270 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 39 of 42 statements. [2025-01-09 16:22:11,270 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 16:22:11,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:22:11,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:11,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496679724] [2025-01-09 16:22:11,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496679724] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:11,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:11,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 16:22:11,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556654091] [2025-01-09 16:22:11,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:11,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 16:22:11,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:11,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 16:22:11,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:22:11,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2025-01-09 16:22:11,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 149 transitions, 2386 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2025-01-09 16:22:11,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:11,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2025-01-09 16:22:11,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:11,923 INFO L124 PetriNetUnfolderBase]: 2723/5563 cut-off events. [2025-01-09 16:22:11,923 INFO L125 PetriNetUnfolderBase]: For 186824/187115 co-relation queries the response was YES. [2025-01-09 16:22:11,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27733 conditions, 5563 events. 2723/5563 cut-off events. For 186824/187115 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 41582 event pairs, 159 based on Foata normal form. 89/5097 useless extension candidates. Maximal degree in co-relation 27661. Up to 1077 conditions per place. [2025-01-09 16:22:11,963 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 186/186 dead transitions. [2025-01-09 16:22:11,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 186 transitions, 2282 flow [2025-01-09 16:22:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:22:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:22:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2025-01-09 16:22:11,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2025-01-09 16:22:11,965 INFO L175 Difference]: Start difference. First operand has 180 places, 149 transitions, 2386 flow. Second operand 8 states and 142 transitions. [2025-01-09 16:22:11,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 186 transitions, 2282 flow [2025-01-09 16:22:12,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 186 transitions, 1983 flow, removed 106 selfloop flow, removed 20 redundant places. [2025-01-09 16:22:12,130 INFO L231 Difference]: Finished difference. Result has 160 places, 0 transitions, 0 flow [2025-01-09 16:22:12,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=160, PETRI_TRANSITIONS=0} [2025-01-09 16:22:12,132 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 134 predicate places. [2025-01-09 16:22:12,132 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 0 transitions, 0 flow [2025-01-09 16:22:12,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2025-01-09 16:22:12,135 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-01-09 16:22:12,135 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-01-09 16:22:12,135 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-01-09 16:22:12,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 16:22:12,135 INFO L422 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1] [2025-01-09 16:22:12,139 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-09 16:22:12,141 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 16:22:12,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 04:22:12 BasicIcfg [2025-01-09 16:22:12,145 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 16:22:12,146 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 16:22:12,146 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 16:22:12,146 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 16:22:12,147 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:22:00" (3/4) ... [2025-01-09 16:22:12,149 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 16:22:12,152 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2025-01-09 16:22:12,152 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2025-01-09 16:22:12,154 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-01-09 16:22:12,154 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-01-09 16:22:12,154 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-01-09 16:22:12,154 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 16:22:12,200 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 16:22:12,201 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 16:22:12,201 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 16:22:12,201 INFO L158 Benchmark]: Toolchain (without parser) took 12072.32ms. Allocated memory was 167.8MB in the beginning and 494.9MB in the end (delta: 327.2MB). Free memory was 121.2MB in the beginning and 164.5MB in the end (delta: -43.3MB). Peak memory consumption was 285.1MB. Max. memory is 16.1GB. [2025-01-09 16:22:12,202 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:22:12,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.61ms. Allocated memory is still 167.8MB. Free memory was 121.2MB in the beginning and 102.1MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 16:22:12,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.01ms. Allocated memory is still 167.8MB. Free memory was 102.1MB in the beginning and 100.4MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 16:22:12,202 INFO L158 Benchmark]: Boogie Preprocessor took 43.79ms. Allocated memory is still 167.8MB. Free memory was 100.4MB in the beginning and 99.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:22:12,202 INFO L158 Benchmark]: RCFGBuilder took 361.85ms. Allocated memory is still 167.8MB. Free memory was 99.1MB in the beginning and 81.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 16:22:12,203 INFO L158 Benchmark]: TraceAbstraction took 11251.67ms. Allocated memory was 167.8MB in the beginning and 494.9MB in the end (delta: 327.2MB). Free memory was 81.2MB in the beginning and 168.8MB in the end (delta: -87.6MB). Peak memory consumption was 276.8MB. Max. memory is 16.1GB. [2025-01-09 16:22:12,203 INFO L158 Benchmark]: Witness Printer took 55.04ms. Allocated memory is still 494.9MB. Free memory was 168.8MB in the beginning and 164.5MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 16:22:12,204 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.61ms. Allocated memory is still 167.8MB. Free memory was 121.2MB in the beginning and 102.1MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.01ms. Allocated memory is still 167.8MB. Free memory was 102.1MB in the beginning and 100.4MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.79ms. Allocated memory is still 167.8MB. Free memory was 100.4MB in the beginning and 99.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.85ms. Allocated memory is still 167.8MB. Free memory was 99.1MB in the beginning and 81.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11251.67ms. Allocated memory was 167.8MB in the beginning and 494.9MB in the end (delta: 327.2MB). Free memory was 81.2MB in the beginning and 168.8MB in the end (delta: -87.6MB). Peak memory consumption was 276.8MB. Max. memory is 16.1GB. * Witness Printer took 55.04ms. Allocated memory is still 494.9MB. Free memory was 168.8MB in the beginning and 164.5MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: 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 5 procedures, 34 locations, 3 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: 11.2s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2076 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2044 mSDsluCounter, 178 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 160 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3137 IncrementalHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 18 mSDtfsCounter, 3137 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2386occurred in iteration=11, InterpolantAutomatonStates: 204, 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, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 369 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 470 ConstructedInterpolants, 0 QuantifiedInterpolants, 1774 SizeOfPredicates, 31 NumberOfNonLiveVariables, 500 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 57/251 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! [2025-01-09 16:22:12,219 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