./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-longest-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-longest-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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:22:04,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:22:04,941 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:22:04,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:22:04,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:22:04,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:22:04,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:22:04,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:22:04,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:22:04,970 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:22:04,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:22:04,971 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:22:04,971 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:22:04,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:22:04,971 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:22:04,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:22:04,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:22:04,972 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:22:04,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:22:04,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:22:04,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:22:04,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:22:04,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:22:04,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:22:04,973 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:22:04,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:22:04,973 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:22:04,973 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:22:04,973 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:22:04,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:22:04,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:22:04,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:22:04,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:22:04,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:22:04,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:22:04,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:22:04,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:22:04,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:22:04,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:22:04,975 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 -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2025-01-09 16:22:05,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:22:05,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:22:05,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:22:05,207 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:22:05,208 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:22:05,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2025-01-09 16:22:06,369 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/391999227/23843537ff974c9eb903613a7d4f4b1b/FLAG4839cb161 [2025-01-09 16:22:06,674 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:22:06,675 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2025-01-09 16:22:06,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/391999227/23843537ff974c9eb903613a7d4f4b1b/FLAG4839cb161 [2025-01-09 16:22:06,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/391999227/23843537ff974c9eb903613a7d4f4b1b [2025-01-09 16:22:06,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:22:06,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:22:06,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:22:06,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:22:06,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:22:06,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:22:06" (1/1) ... [2025-01-09 16:22:06,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd6f09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:06, skipping insertion in model container [2025-01-09 16:22:06,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:22:06" (1/1) ... [2025-01-09 16:22:06,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:22:07,175 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-longest-1.i[30962,30975] [2025-01-09 16:22:07,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:22:07,187 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:22:07,226 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-longest-1.i[30962,30975] [2025-01-09 16:22:07,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:22:07,252 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:22:07,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07 WrapperNode [2025-01-09 16:22:07,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:22:07,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:22:07,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:22:07,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:22:07,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,274 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2025-01-09 16:22:07,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:22:07,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:22:07,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:22:07,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:22:07,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,282 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,288 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 16:22:07,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,291 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:22:07,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:22:07,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:22:07,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:22:07,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (1/1) ... [2025-01-09 16:22:07,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:22:07,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:07,317 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 16:22:07,321 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 16:22:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-01-09 16:22:07,335 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-01-09 16:22:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-01-09 16:22:07,335 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-01-09 16:22:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 16:22:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:22:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:22:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 16:22:07,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:22:07,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:22:07,336 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 16:22:07,414 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:22:07,415 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:22:07,513 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:22:07,514 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:22:07,556 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:22:07,556 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:22:07,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:22:07 BoogieIcfgContainer [2025-01-09 16:22:07,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:22:07,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:22:07,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:22:07,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:22:07,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:22:06" (1/3) ... [2025-01-09 16:22:07,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b753d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:22:07, skipping insertion in model container [2025-01-09 16:22:07,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:22:07" (2/3) ... [2025-01-09 16:22:07,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b753d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:22:07, skipping insertion in model container [2025-01-09 16:22:07,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:22:07" (3/3) ... [2025-01-09 16:22:07,563 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2025-01-09 16:22:07,572 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:22:07,573 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-1.i that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 16:22:07,573 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:22:07,600 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 16:22:07,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2025-01-09 16:22:07,639 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2025-01-09 16:22:07,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:22:07,642 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 16:22:07,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2025-01-09 16:22:07,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2025-01-09 16:22:07,649 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:22:07,658 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;@1f1271fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:22:07,659 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-09 16:22:07,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:22:07,664 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-01-09 16:22:07,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:22:07,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:07,665 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:07,665 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 16:22:07,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash -60315798, now seen corresponding path program 1 times [2025-01-09 16:22:07,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:07,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570612181] [2025-01-09 16:22:07,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:07,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:07,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 16:22:07,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 16:22:07,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:07,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:07,960 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 16:22:07,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:07,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570612181] [2025-01-09 16:22:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570612181] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:07,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:07,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:22:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393034142] [2025-01-09 16:22:07,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:07,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:22:07,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:07,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:22:07,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:22:08,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:08,015 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 16:22:08,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:08,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:08,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:08,180 INFO L124 PetriNetUnfolderBase]: 321/539 cut-off events. [2025-01-09 16:22:08,181 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-09 16:22:08,187 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 16:22:08,189 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2025-01-09 16:22:08,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2025-01-09 16:22:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:22:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:22:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2025-01-09 16:22:08,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-01-09 16:22:08,198 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2025-01-09 16:22:08,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2025-01-09 16:22:08,201 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 16:22:08,202 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2025-01-09 16:22:08,204 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 16:22:08,206 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2025-01-09 16:22:08,206 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2025-01-09 16:22:08,206 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 16:22:08,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:08,206 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:08,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:22:08,207 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 16:22:08,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash -39912258, now seen corresponding path program 1 times [2025-01-09 16:22:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:08,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326355575] [2025-01-09 16:22:08,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:08,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 16:22:08,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:22:08,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:08,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:08,307 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 16:22:08,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:08,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326355575] [2025-01-09 16:22:08,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326355575] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:08,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:08,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:22:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380711533] [2025-01-09 16:22:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:08,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:22:08,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:08,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:22:08,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:22:08,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:08,324 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 16:22:08,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:08,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:08,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:08,479 INFO L124 PetriNetUnfolderBase]: 382/686 cut-off events. [2025-01-09 16:22:08,479 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2025-01-09 16:22:08,481 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 16:22:08,483 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2025-01-09 16:22:08,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2025-01-09 16:22:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:22:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:22:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2025-01-09 16:22:08,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-01-09 16:22:08,485 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2025-01-09 16:22:08,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2025-01-09 16:22:08,487 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 16:22:08,488 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2025-01-09 16:22:08,488 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 16:22:08,488 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2025-01-09 16:22:08,489 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2025-01-09 16:22:08,489 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 16:22:08,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:08,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:08,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:22:08,489 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 16:22:08,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash -908019650, now seen corresponding path program 2 times [2025-01-09 16:22:08,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:08,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212517526] [2025-01-09 16:22:08,489 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:08,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:08,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-01-09 16:22:08,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:22:08,499 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:22:08,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:08,597 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 16:22:08,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:08,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212517526] [2025-01-09 16:22:08,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212517526] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:08,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:08,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:22:08,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589319536] [2025-01-09 16:22:08,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:08,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:22:08,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:08,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:22:08,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:22:08,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:08,612 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 16:22:08,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:08,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:08,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:08,752 INFO L124 PetriNetUnfolderBase]: 328/602 cut-off events. [2025-01-09 16:22:08,752 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2025-01-09 16:22:08,754 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 16:22:08,755 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2025-01-09 16:22:08,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2025-01-09 16:22:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:22:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:22:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2025-01-09 16:22:08,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2025-01-09 16:22:08,757 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2025-01-09 16:22:08,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2025-01-09 16:22:08,760 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 16:22:08,761 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2025-01-09 16:22:08,761 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 16:22:08,761 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2025-01-09 16:22:08,762 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2025-01-09 16:22:08,762 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 16:22:08,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:08,762 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:08,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:22:08,762 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 16:22:08,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:08,763 INFO L85 PathProgramCache]: Analyzing trace with hash 382127805, now seen corresponding path program 1 times [2025-01-09 16:22:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:08,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983611837] [2025-01-09 16:22:08,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:08,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:22:08,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:22:08,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:08,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:08,853 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 16:22:08,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983611837] [2025-01-09 16:22:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983611837] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:08,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:08,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:22:08,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968687687] [2025-01-09 16:22:08,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:08,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:22:08,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:08,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:22:08,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:22:08,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:08,864 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 16:22:08,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:08,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:08,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:09,065 INFO L124 PetriNetUnfolderBase]: 337/611 cut-off events. [2025-01-09 16:22:09,065 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2025-01-09 16:22:09,066 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 16:22:09,067 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 16 changer transitions 24/89 dead transitions. [2025-01-09 16:22:09,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 607 flow [2025-01-09 16:22:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:22:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-09 16:22:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2025-01-09 16:22:09,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-01-09 16:22:09,069 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 11 states and 135 transitions. [2025-01-09 16:22:09,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 607 flow [2025-01-09 16:22:09,073 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 16:22:09,074 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 279 flow [2025-01-09 16:22:09,074 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 16:22:09,074 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2025-01-09 16:22:09,074 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 279 flow [2025-01-09 16:22:09,075 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 16:22:09,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:09,075 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:09,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:22:09,075 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 16:22:09,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:09,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1499908535, now seen corresponding path program 2 times [2025-01-09 16:22:09,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:09,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256178169] [2025-01-09 16:22:09,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:09,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:22:09,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:22:09,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:22:09,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:09,156 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 16:22:09,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:09,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256178169] [2025-01-09 16:22:09,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256178169] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:09,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:09,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:22:09,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925735512] [2025-01-09 16:22:09,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:09,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:22:09,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:09,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:22:09,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:22:09,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:09,169 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 16:22:09,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:09,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:09,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:09,362 INFO L124 PetriNetUnfolderBase]: 445/798 cut-off events. [2025-01-09 16:22:09,362 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2025-01-09 16:22:09,363 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 16:22:09,365 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 23 changer transitions 30/100 dead transitions. [2025-01-09 16:22:09,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 100 transitions, 739 flow [2025-01-09 16:22:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:22:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-09 16:22:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2025-01-09 16:22:09,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2025-01-09 16:22:09,366 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 279 flow. Second operand 11 states and 138 transitions. [2025-01-09 16:22:09,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 100 transitions, 739 flow [2025-01-09 16:22:09,370 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 16:22:09,371 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 390 flow [2025-01-09 16:22:09,372 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 16:22:09,372 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2025-01-09 16:22:09,372 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 390 flow [2025-01-09 16:22:09,372 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 16:22:09,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:09,372 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:09,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:22:09,373 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 16:22:09,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:09,373 INFO L85 PathProgramCache]: Analyzing trace with hash 820165627, now seen corresponding path program 1 times [2025-01-09 16:22:09,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:09,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76544245] [2025-01-09 16:22:09,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:09,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:09,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:22:09,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:09,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:09,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:09,462 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 16:22:09,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76544245] [2025-01-09 16:22:09,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76544245] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276541652] [2025-01-09 16:22:09,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:09,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:09,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:09,465 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 16:22:09,467 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 16:22:09,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:22:09,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:09,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:09,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:09,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 16:22:09,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:09,556 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 16:22:09,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:09,708 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 16:22:09,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276541652] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:09,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:09,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-09 16:22:09,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282109695] [2025-01-09 16:22:09,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:09,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 16:22:09,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:09,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 16:22:09,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:22:09,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:09,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 390 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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 16:22:09,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:09,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:09,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:10,158 INFO L124 PetriNetUnfolderBase]: 571/1049 cut-off events. [2025-01-09 16:22:10,158 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2025-01-09 16:22:10,161 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 16:22:10,165 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 64 selfloop transitions, 17 changer transitions 67/151 dead transitions. [2025-01-09 16:22:10,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 151 transitions, 1346 flow [2025-01-09 16:22:10,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 16:22:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-09 16:22:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2025-01-09 16:22:10,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2025-01-09 16:22:10,166 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 390 flow. Second operand 19 states and 231 transitions. [2025-01-09 16:22:10,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 151 transitions, 1346 flow [2025-01-09 16:22:10,178 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 16:22:10,180 INFO L231 Difference]: Finished difference. Result has 88 places, 51 transitions, 521 flow [2025-01-09 16:22:10,180 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 16:22:10,182 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2025-01-09 16:22:10,182 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 51 transitions, 521 flow [2025-01-09 16:22:10,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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 16:22:10,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:10,182 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:10,192 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 16:22:10,387 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 16:22:10,387 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 16:22:10,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:10,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1577438379, now seen corresponding path program 2 times [2025-01-09 16:22:10,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:10,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145095326] [2025-01-09 16:22:10,388 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:10,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:10,400 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:22:10,413 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:10,413 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:22:10,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:10,586 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 16:22:10,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:10,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145095326] [2025-01-09 16:22:10,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145095326] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:22:10,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:22:10,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:22:10,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093748936] [2025-01-09 16:22:10,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:22:10,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 16:22:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:10,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 16:22:10,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:22:10,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:10,601 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 16:22:10,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:10,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:10,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:10,913 INFO L124 PetriNetUnfolderBase]: 652/1216 cut-off events. [2025-01-09 16:22:10,913 INFO L125 PetriNetUnfolderBase]: For 19130/19130 co-relation queries the response was YES. [2025-01-09 16:22:10,918 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 16:22:10,923 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 76 selfloop transitions, 23 changer transitions 31/133 dead transitions. [2025-01-09 16:22:10,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 1509 flow [2025-01-09 16:22:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 16:22:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-09 16:22:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 187 transitions. [2025-01-09 16:22:10,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2025-01-09 16:22:10,925 INFO L175 Difference]: Start difference. First operand has 88 places, 51 transitions, 521 flow. Second operand 15 states and 187 transitions. [2025-01-09 16:22:10,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 1509 flow [2025-01-09 16:22:10,943 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 16:22:10,945 INFO L231 Difference]: Finished difference. Result has 90 places, 57 transitions, 583 flow [2025-01-09 16:22:10,945 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 16:22:10,947 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2025-01-09 16:22:10,947 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 57 transitions, 583 flow [2025-01-09 16:22:10,947 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 16:22:10,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:10,947 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:10,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:22:10,947 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 16:22:10,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:10,948 INFO L85 PathProgramCache]: Analyzing trace with hash 133024501, now seen corresponding path program 3 times [2025-01-09 16:22:10,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:10,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577395332] [2025-01-09 16:22:10,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:22:10,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:10,953 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:22:10,960 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:10,961 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:22:10,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:11,076 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 16:22:11,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:11,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577395332] [2025-01-09 16:22:11,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577395332] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:11,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888286468] [2025-01-09 16:22:11,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:22:11,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:11,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:11,078 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 16:22:11,086 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 16:22:11,119 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:22:11,129 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:22:11,129 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:22:11,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:11,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 16:22:11,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:11,178 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 16:22:11,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:11,296 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 16:22:11,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888286468] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:11,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:11,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-09 16:22:11,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972485997] [2025-01-09 16:22:11,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:11,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:22:11,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:11,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:22:11,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:22:11,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:11,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 57 transitions, 583 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 16:22:11,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:11,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:11,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:11,817 INFO L124 PetriNetUnfolderBase]: 841/1528 cut-off events. [2025-01-09 16:22:11,818 INFO L125 PetriNetUnfolderBase]: For 24317/24317 co-relation queries the response was YES. [2025-01-09 16:22:11,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7755 conditions, 1528 events. 841/1528 cut-off events. For 24317/24317 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7221 event pairs, 46 based on Foata normal form. 81/1605 useless extension candidates. Maximal degree in co-relation 7712. Up to 246 conditions per place. [2025-01-09 16:22:11,826 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 79 selfloop transitions, 49 changer transitions 83/214 dead transitions. [2025-01-09 16:22:11,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 214 transitions, 2477 flow [2025-01-09 16:22:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 16:22:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-01-09 16:22:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 321 transitions. [2025-01-09 16:22:11,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144230769230769 [2025-01-09 16:22:11,827 INFO L175 Difference]: Start difference. First operand has 90 places, 57 transitions, 583 flow. Second operand 26 states and 321 transitions. [2025-01-09 16:22:11,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 214 transitions, 2477 flow [2025-01-09 16:22:11,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 214 transitions, 2253 flow, removed 96 selfloop flow, removed 10 redundant places. [2025-01-09 16:22:11,849 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 953 flow [2025-01-09 16:22:11,849 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=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=953, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2025-01-09 16:22:11,849 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2025-01-09 16:22:11,849 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 953 flow [2025-01-09 16:22:11,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 16:22:11,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:11,850 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:11,856 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 16:22:12,054 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 16:22:12,054 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 16:22:12,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:12,054 INFO L85 PathProgramCache]: Analyzing trace with hash 329719795, now seen corresponding path program 1 times [2025-01-09 16:22:12,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:12,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829182688] [2025-01-09 16:22:12,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:12,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:12,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:22:12,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:22:12,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:12,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:12,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829182688] [2025-01-09 16:22:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829182688] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179711235] [2025-01-09 16:22:12,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:22:12,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:12,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:12,190 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 16:22:12,192 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 16:22:12,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:22:12,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:22:12,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:12,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:12,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 16:22:12,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:12,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179711235] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:12,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:12,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-01-09 16:22:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415026212] [2025-01-09 16:22:12,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:12,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:22:12,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:12,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:22:12,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:22:12,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:12,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 953 flow. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 16:22:12,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:12,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:12,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:13,277 INFO L124 PetriNetUnfolderBase]: 1327/2413 cut-off events. [2025-01-09 16:22:13,277 INFO L125 PetriNetUnfolderBase]: For 77863/77863 co-relation queries the response was YES. [2025-01-09 16:22:13,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14982 conditions, 2413 events. 1327/2413 cut-off events. For 77863/77863 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11790 event pairs, 83 based on Foata normal form. 63/2470 useless extension candidates. Maximal degree in co-relation 14925. Up to 444 conditions per place. [2025-01-09 16:22:13,293 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 97 selfloop transitions, 80 changer transitions 86/266 dead transitions. [2025-01-09 16:22:13,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 266 transitions, 4124 flow [2025-01-09 16:22:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 16:22:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-01-09 16:22:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 358 transitions. [2025-01-09 16:22:13,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.514367816091954 [2025-01-09 16:22:13,295 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 953 flow. Second operand 29 states and 358 transitions. [2025-01-09 16:22:13,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 266 transitions, 4124 flow [2025-01-09 16:22:13,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 266 transitions, 3416 flow, removed 330 selfloop flow, removed 18 redundant places. [2025-01-09 16:22:13,347 INFO L231 Difference]: Finished difference. Result has 141 places, 106 transitions, 1630 flow [2025-01-09 16:22:13,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1630, PETRI_PLACES=141, PETRI_TRANSITIONS=106} [2025-01-09 16:22:13,347 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 115 predicate places. [2025-01-09 16:22:13,347 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 106 transitions, 1630 flow [2025-01-09 16:22:13,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 16:22:13,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:13,348 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:13,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 16:22:13,548 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 16:22:13,549 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 16:22:13,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash -585990530, now seen corresponding path program 2 times [2025-01-09 16:22:13,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:13,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087990171] [2025-01-09 16:22:13,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:13,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:13,554 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:22:13,562 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:22:13,562 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:22:13,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:22:13,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:13,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087990171] [2025-01-09 16:22:13,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087990171] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:13,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134748552] [2025-01-09 16:22:13,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:22:13,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:13,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:13,732 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 16:22:13,733 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 16:22:13,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:22:13,770 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:22:13,770 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:22:13,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:13,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 16:22:13,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:22:13,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:22:14,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134748552] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:14,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:14,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2025-01-09 16:22:14,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908751465] [2025-01-09 16:22:14,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:14,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 16:22:14,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:14,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 16:22:14,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2025-01-09 16:22:14,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:14,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 106 transitions, 1630 flow. Second operand has 25 states, 25 states have (on average 7.2) internal successors, (180), 25 states have internal predecessors, (180), 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 16:22:14,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:14,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:14,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:14,961 INFO L124 PetriNetUnfolderBase]: 1561/2912 cut-off events. [2025-01-09 16:22:14,961 INFO L125 PetriNetUnfolderBase]: For 172037/172037 co-relation queries the response was YES. [2025-01-09 16:22:14,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21786 conditions, 2912 events. 1561/2912 cut-off events. For 172037/172037 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13996 event pairs, 455 based on Foata normal form. 117/3025 useless extension candidates. Maximal degree in co-relation 21719. Up to 1656 conditions per place. [2025-01-09 16:22:14,981 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 152 selfloop transitions, 35 changer transitions 133/323 dead transitions. [2025-01-09 16:22:14,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 323 transitions, 6273 flow [2025-01-09 16:22:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-01-09 16:22:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-01-09 16:22:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 441 transitions. [2025-01-09 16:22:14,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2025-01-09 16:22:14,983 INFO L175 Difference]: Start difference. First operand has 141 places, 106 transitions, 1630 flow. Second operand 37 states and 441 transitions. [2025-01-09 16:22:14,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 323 transitions, 6273 flow [2025-01-09 16:22:15,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 323 transitions, 4779 flow, removed 724 selfloop flow, removed 14 redundant places. [2025-01-09 16:22:15,178 INFO L231 Difference]: Finished difference. Result has 181 places, 120 transitions, 1824 flow [2025-01-09 16:22:15,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1824, PETRI_PLACES=181, PETRI_TRANSITIONS=120} [2025-01-09 16:22:15,180 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 155 predicate places. [2025-01-09 16:22:15,180 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 120 transitions, 1824 flow [2025-01-09 16:22:15,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.2) internal successors, (180), 25 states have internal predecessors, (180), 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 16:22:15,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:15,180 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:15,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 16:22:15,381 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 16:22:15,381 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 16:22:15,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:15,382 INFO L85 PathProgramCache]: Analyzing trace with hash -925712578, now seen corresponding path program 3 times [2025-01-09 16:22:15,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:15,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373674034] [2025-01-09 16:22:15,382 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:22:15,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:15,386 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:22:15,392 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:22:15,393 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 16:22:15,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:22:15,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373674034] [2025-01-09 16:22:15,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373674034] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:15,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628015970] [2025-01-09 16:22:15,538 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:22:15,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:15,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:15,540 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 16:22:15,541 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 16:22:15,570 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-01-09 16:22:15,582 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:22:15,582 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-09 16:22:15,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:15,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 16:22:15,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:22:15,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:22:15,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628015970] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:15,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:15,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2025-01-09 16:22:15,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202433152] [2025-01-09 16:22:15,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:15,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 16:22:15,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:15,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 16:22:15,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2025-01-09 16:22:15,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:15,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 120 transitions, 1824 flow. Second operand has 25 states, 25 states have (on average 7.2) internal successors, (180), 25 states have internal predecessors, (180), 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 16:22:15,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:15,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:15,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:17,058 INFO L124 PetriNetUnfolderBase]: 1957/3798 cut-off events. [2025-01-09 16:22:17,059 INFO L125 PetriNetUnfolderBase]: For 291079/291079 co-relation queries the response was YES. [2025-01-09 16:22:17,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30188 conditions, 3798 events. 1957/3798 cut-off events. For 291079/291079 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 20772 event pairs, 266 based on Foata normal form. 117/3911 useless extension candidates. Maximal degree in co-relation 30103. Up to 1084 conditions per place. [2025-01-09 16:22:17,091 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 152 selfloop transitions, 106 changer transitions 147/408 dead transitions. [2025-01-09 16:22:17,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 408 transitions, 8148 flow [2025-01-09 16:22:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-01-09 16:22:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-01-09 16:22:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 527 transitions. [2025-01-09 16:22:17,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4990530303030303 [2025-01-09 16:22:17,093 INFO L175 Difference]: Start difference. First operand has 181 places, 120 transitions, 1824 flow. Second operand 44 states and 527 transitions. [2025-01-09 16:22:17,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 408 transitions, 8148 flow [2025-01-09 16:22:17,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 408 transitions, 6881 flow, removed 613 selfloop flow, removed 24 redundant places. [2025-01-09 16:22:17,382 INFO L231 Difference]: Finished difference. Result has 213 places, 165 transitions, 2837 flow [2025-01-09 16:22:17,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2837, PETRI_PLACES=213, PETRI_TRANSITIONS=165} [2025-01-09 16:22:17,383 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 187 predicate places. [2025-01-09 16:22:17,383 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 165 transitions, 2837 flow [2025-01-09 16:22:17,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.2) internal successors, (180), 25 states have internal predecessors, (180), 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 16:22:17,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:17,383 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:17,389 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 16:22:17,588 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 16:22:17,588 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 16:22:17,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:17,589 INFO L85 PathProgramCache]: Analyzing trace with hash -674183026, now seen corresponding path program 4 times [2025-01-09 16:22:17,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:17,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219658235] [2025-01-09 16:22:17,589 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:22:17,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:17,594 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:22:17,597 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:22:17,598 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:22:17,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:22:17,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:17,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219658235] [2025-01-09 16:22:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219658235] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:17,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810637617] [2025-01-09 16:22:17,753 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:22:17,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:17,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:17,756 INFO L229 MonitoredProcess]: Starting monitored process 7 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 16:22:17,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 16:22:17,784 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-09 16:22:17,794 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 16:22:17,794 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:22:17,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:17,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 16:22:17,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:22:17,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:22:18,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810637617] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:18,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:18,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-01-09 16:22:18,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397873882] [2025-01-09 16:22:18,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:18,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 16:22:18,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:18,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 16:22:18,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-01-09 16:22:18,049 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:18,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 165 transitions, 2837 flow. Second operand has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 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 16:22:18,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:18,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:18,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:19,729 INFO L124 PetriNetUnfolderBase]: 3433/6568 cut-off events. [2025-01-09 16:22:19,729 INFO L125 PetriNetUnfolderBase]: For 700008/700008 co-relation queries the response was YES. [2025-01-09 16:22:19,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57355 conditions, 6568 events. 3433/6568 cut-off events. For 700008/700008 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 41197 event pairs, 144 based on Foata normal form. 126/6690 useless extension candidates. Maximal degree in co-relation 57257. Up to 1500 conditions per place. [2025-01-09 16:22:19,778 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 161 selfloop transitions, 235 changer transitions 162/561 dead transitions. [2025-01-09 16:22:19,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 561 transitions, 12693 flow [2025-01-09 16:22:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-01-09 16:22:19,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2025-01-09 16:22:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 607 transitions. [2025-01-09 16:22:19,781 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5058333333333334 [2025-01-09 16:22:19,781 INFO L175 Difference]: Start difference. First operand has 213 places, 165 transitions, 2837 flow. Second operand 50 states and 607 transitions. [2025-01-09 16:22:19,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 561 transitions, 12693 flow [2025-01-09 16:22:20,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 561 transitions, 10864 flow, removed 886 selfloop flow, removed 26 redundant places. [2025-01-09 16:22:20,970 INFO L231 Difference]: Finished difference. Result has 256 places, 278 transitions, 5391 flow [2025-01-09 16:22:20,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=5391, PETRI_PLACES=256, PETRI_TRANSITIONS=278} [2025-01-09 16:22:20,971 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 230 predicate places. [2025-01-09 16:22:20,971 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 278 transitions, 5391 flow [2025-01-09 16:22:20,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.230769230769231) internal successors, (188), 26 states have internal predecessors, (188), 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 16:22:20,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:20,972 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 16:22:20,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 16:22:21,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 16:22:21,176 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:21,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1931423439, now seen corresponding path program 5 times [2025-01-09 16:22:21,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:21,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096407516] [2025-01-09 16:22:21,177 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:22:21,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:21,189 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 5 equivalence classes. [2025-01-09 16:22:21,196 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 42 of 42 statements. [2025-01-09 16:22:21,196 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-09 16:22:21,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:22:21,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096407516] [2025-01-09 16:22:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096407516] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:21,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754960920] [2025-01-09 16:22:21,473 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:22:21,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:21,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:21,474 INFO L229 MonitoredProcess]: Starting monitored process 8 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 16:22:21,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 16:22:21,508 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 5 equivalence classes. [2025-01-09 16:22:21,527 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 42 of 42 statements. [2025-01-09 16:22:21,528 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-09 16:22:21,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:21,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 16:22:21,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:22:21,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:22:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754960920] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:21,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:21,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2025-01-09 16:22:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725636263] [2025-01-09 16:22:21,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:21,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-09 16:22:21,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:21,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-09 16:22:21,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2025-01-09 16:22:21,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:21,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 278 transitions, 5391 flow. Second operand has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 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 16:22:21,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:21,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:21,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:24,336 INFO L124 PetriNetUnfolderBase]: 4819/9210 cut-off events. [2025-01-09 16:22:24,336 INFO L125 PetriNetUnfolderBase]: For 1635604/1635604 co-relation queries the response was YES. [2025-01-09 16:22:24,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99054 conditions, 9210 events. 4819/9210 cut-off events. For 1635604/1635604 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 59308 event pairs, 47 based on Foata normal form. 135/9339 useless extension candidates. Maximal degree in co-relation 98936. Up to 2127 conditions per place. [2025-01-09 16:22:24,436 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 198 selfloop transitions, 357 changer transitions 183/741 dead transitions. [2025-01-09 16:22:24,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 741 transitions, 21890 flow [2025-01-09 16:22:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-01-09 16:22:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-01-09 16:22:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 750 transitions. [2025-01-09 16:22:24,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5122950819672131 [2025-01-09 16:22:24,438 INFO L175 Difference]: Start difference. First operand has 256 places, 278 transitions, 5391 flow. Second operand 61 states and 750 transitions. [2025-01-09 16:22:24,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 741 transitions, 21890 flow [2025-01-09 16:22:27,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 741 transitions, 15904 flow, removed 2955 selfloop flow, removed 25 redundant places. [2025-01-09 16:22:27,226 INFO L231 Difference]: Finished difference. Result has 318 places, 387 transitions, 8332 flow [2025-01-09 16:22:27,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=8332, PETRI_PLACES=318, PETRI_TRANSITIONS=387} [2025-01-09 16:22:27,227 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 292 predicate places. [2025-01-09 16:22:27,227 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 387 transitions, 8332 flow [2025-01-09 16:22:27,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 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 16:22:27,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:27,228 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:27,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 16:22:27,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:27,432 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:27,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash -269321327, now seen corresponding path program 6 times [2025-01-09 16:22:27,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:27,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352274830] [2025-01-09 16:22:27,433 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:22:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:27,440 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 66 statements into 10 equivalence classes. [2025-01-09 16:22:27,450 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 16:22:27,450 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-01-09 16:22:27,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:27,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:27,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352274830] [2025-01-09 16:22:27,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352274830] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:27,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852601953] [2025-01-09 16:22:27,799 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:22:27,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:27,805 INFO L229 MonitoredProcess]: Starting monitored process 9 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 16:22:27,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 16:22:27,836 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 66 statements into 10 equivalence classes. [2025-01-09 16:22:27,856 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 16:22:27,856 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-01-09 16:22:27,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:27,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 16:22:27,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:28,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:22:28,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852601953] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:28,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:28,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2025-01-09 16:22:28,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599799681] [2025-01-09 16:22:28,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:28,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-01-09 16:22:28,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:28,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-01-09 16:22:28,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1519, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 16:22:28,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:28,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 387 transitions, 8332 flow. Second operand has 45 states, 45 states have (on average 7.044444444444444) internal successors, (317), 45 states have internal predecessors, (317), 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 16:22:28,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:28,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:28,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:33,456 INFO L124 PetriNetUnfolderBase]: 6574/12420 cut-off events. [2025-01-09 16:22:33,456 INFO L125 PetriNetUnfolderBase]: For 3237313/3237313 co-relation queries the response was YES. [2025-01-09 16:22:33,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155450 conditions, 12420 events. 6574/12420 cut-off events. For 3237313/3237313 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 76660 event pairs, 58 based on Foata normal form. 279/12695 useless extension candidates. Maximal degree in co-relation 155303. Up to 2835 conditions per place. [2025-01-09 16:22:33,579 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 316 selfloop transitions, 470 changer transitions 329/1118 dead transitions. [2025-01-09 16:22:33,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1118 transitions, 37469 flow [2025-01-09 16:22:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2025-01-09 16:22:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2025-01-09 16:22:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 1284 transitions. [2025-01-09 16:22:33,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5095238095238095 [2025-01-09 16:22:33,585 INFO L175 Difference]: Start difference. First operand has 318 places, 387 transitions, 8332 flow. Second operand 105 states and 1284 transitions. [2025-01-09 16:22:33,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1118 transitions, 37469 flow [2025-01-09 16:22:37,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1118 transitions, 29014 flow, removed 4177 selfloop flow, removed 27 redundant places. [2025-01-09 16:22:37,272 INFO L231 Difference]: Finished difference. Result has 444 places, 502 transitions, 12264 flow [2025-01-09 16:22:37,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6067, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=105, PETRI_FLOW=12264, PETRI_PLACES=444, PETRI_TRANSITIONS=502} [2025-01-09 16:22:37,273 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 418 predicate places. [2025-01-09 16:22:37,273 INFO L471 AbstractCegarLoop]: Abstraction has has 444 places, 502 transitions, 12264 flow [2025-01-09 16:22:37,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 7.044444444444444) internal successors, (317), 45 states have internal predecessors, (317), 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 16:22:37,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:22:37,274 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:22:37,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 16:22:37,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:37,475 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:22:37,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:22:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash 191981555, now seen corresponding path program 7 times [2025-01-09 16:22:37,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:22:37,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153157058] [2025-01-09 16:22:37,476 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:22:37,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:22:37,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 16:22:37,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 16:22:37,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:37,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 810 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:22:38,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:22:38,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153157058] [2025-01-09 16:22:38,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153157058] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:22:38,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946832033] [2025-01-09 16:22:38,432 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:22:38,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:22:38,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:22:38,435 INFO L229 MonitoredProcess]: Starting monitored process 10 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 16:22:38,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 16:22:38,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 16:22:38,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 16:22:38,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:22:38,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:22:38,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-01-09 16:22:38,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:22:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 810 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:22:38,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:22:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 810 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:22:39,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946832033] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:22:39,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:22:39,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 77 [2025-01-09 16:22:39,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451410336] [2025-01-09 16:22:39,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:22:39,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-01-09 16:22:39,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:22:39,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-01-09 16:22:39,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1362, Invalid=4644, Unknown=0, NotChecked=0, Total=6006 [2025-01-09 16:22:39,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:22:39,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 502 transitions, 12264 flow. Second operand has 78 states, 78 states have (on average 7.064102564102564) internal successors, (551), 78 states have internal predecessors, (551), 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 16:22:39,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:22:39,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:22:39,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:22:46,435 INFO L124 PetriNetUnfolderBase]: 8635/16054 cut-off events. [2025-01-09 16:22:46,435 INFO L125 PetriNetUnfolderBase]: For 6562932/6562932 co-relation queries the response was YES. [2025-01-09 16:22:46,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230187 conditions, 16054 events. 8635/16054 cut-off events. For 6562932/6562932 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 97331 event pairs, 65 based on Foata normal form. 54/16102 useless extension candidates. Maximal degree in co-relation 229992. Up to 3621 conditions per place. [2025-01-09 16:22:46,661 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 320 selfloop transitions, 631 changer transitions 195/1149 dead transitions. [2025-01-09 16:22:46,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 1149 transitions, 43320 flow [2025-01-09 16:22:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2025-01-09 16:22:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2025-01-09 16:22:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 1041 transitions. [2025-01-09 16:22:46,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5043604651162791 [2025-01-09 16:22:46,664 INFO L175 Difference]: Start difference. First operand has 444 places, 502 transitions, 12264 flow. Second operand 86 states and 1041 transitions. [2025-01-09 16:22:46,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 1149 transitions, 43320 flow [2025-01-09 16:23:05,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1149 transitions, 28246 flow, removed 7436 selfloop flow, removed 40 redundant places. [2025-01-09 16:23:05,922 INFO L231 Difference]: Finished difference. Result has 486 places, 669 transitions, 13503 flow [2025-01-09 16:23:05,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8226, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=469, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=13503, PETRI_PLACES=486, PETRI_TRANSITIONS=669} [2025-01-09 16:23:05,924 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 460 predicate places. [2025-01-09 16:23:05,924 INFO L471 AbstractCegarLoop]: Abstraction has has 486 places, 669 transitions, 13503 flow [2025-01-09 16:23:05,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 7.064102564102564) internal successors, (551), 78 states have internal predecessors, (551), 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 16:23:05,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:23:05,925 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:23:05,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 16:23:06,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:23:06,129 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:23:06,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:23:06,130 INFO L85 PathProgramCache]: Analyzing trace with hash 996059620, now seen corresponding path program 8 times [2025-01-09 16:23:06,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:23:06,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333744119] [2025-01-09 16:23:06,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:23:06,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:23:06,138 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 129 statements into 2 equivalence classes. [2025-01-09 16:23:06,150 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 16:23:06,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:23:06,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:23:06,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 0 proven. 1007 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:23:06,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:23:06,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333744119] [2025-01-09 16:23:06,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333744119] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:23:06,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042360081] [2025-01-09 16:23:06,866 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:23:06,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:23:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:23:06,869 INFO L229 MonitoredProcess]: Starting monitored process 11 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 16:23:06,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 16:23:06,901 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 129 statements into 2 equivalence classes. [2025-01-09 16:23:06,922 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 16:23:06,922 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:23:06,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:23:06,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-09 16:23:06,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:23:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 1 proven. 1006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:23:07,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:23:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 0 proven. 1007 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:23:07,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042360081] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:23:07,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:23:07,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2025-01-09 16:23:07,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044547865] [2025-01-09 16:23:07,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:23:07,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 16:23:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:23:07,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 16:23:07,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1636, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 16:23:07,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:23:07,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 669 transitions, 13503 flow. Second operand has 46 states, 46 states have (on average 6.978260869565218) internal successors, (321), 46 states have internal predecessors, (321), 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 16:23:07,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:23:07,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:23:07,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:23:14,614 INFO L124 PetriNetUnfolderBase]: 8635/16098 cut-off events. [2025-01-09 16:23:14,615 INFO L125 PetriNetUnfolderBase]: For 5526393/5526393 co-relation queries the response was YES. [2025-01-09 16:23:14,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199006 conditions, 16098 events. 8635/16098 cut-off events. For 5526393/5526393 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 97566 event pairs, 38 based on Foata normal form. 27/16121 useless extension candidates. Maximal degree in co-relation 198814. Up to 3639 conditions per place. [2025-01-09 16:23:14,848 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 332 selfloop transitions, 640 changer transitions 183/1158 dead transitions. [2025-01-09 16:23:14,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 1158 transitions, 30892 flow [2025-01-09 16:23:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-01-09 16:23:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2025-01-09 16:23:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1059 transitions. [2025-01-09 16:23:14,850 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5014204545454546 [2025-01-09 16:23:14,850 INFO L175 Difference]: Start difference. First operand has 486 places, 669 transitions, 13503 flow. Second operand 88 states and 1059 transitions. [2025-01-09 16:23:14,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 1158 transitions, 30892 flow [2025-01-09 16:23:27,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 1158 transitions, 27754 flow, removed 1176 selfloop flow, removed 46 redundant places. [2025-01-09 16:23:27,810 INFO L231 Difference]: Finished difference. Result has 527 places, 676 transitions, 12942 flow [2025-01-09 16:23:27,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11121, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=633, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=12942, PETRI_PLACES=527, PETRI_TRANSITIONS=676} [2025-01-09 16:23:27,811 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 501 predicate places. [2025-01-09 16:23:27,811 INFO L471 AbstractCegarLoop]: Abstraction has has 527 places, 676 transitions, 12942 flow [2025-01-09 16:23:27,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.978260869565218) internal successors, (321), 46 states have internal predecessors, (321), 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 16:23:27,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:23:27,811 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:23:27,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 16:23:28,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 16:23:28,015 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:23:28,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:23:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1385498226, now seen corresponding path program 9 times [2025-01-09 16:23:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:23:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116268836] [2025-01-09 16:23:28,017 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:23:28,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:23:28,022 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 129 statements into 18 equivalence classes. [2025-01-09 16:23:28,037 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 16:23:28,037 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-01-09 16:23:28,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:23:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:23:28,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:23:28,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116268836] [2025-01-09 16:23:28,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116268836] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:23:28,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143950037] [2025-01-09 16:23:28,708 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:23:28,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:23:28,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:23:28,711 INFO L229 MonitoredProcess]: Starting monitored process 12 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 16:23:28,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 16:23:28,744 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 129 statements into 18 equivalence classes. [2025-01-09 16:23:28,772 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 129 of 129 statements. [2025-01-09 16:23:28,773 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-01-09 16:23:28,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:23:28,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-09 16:23:28,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:23:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:23:28,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:23:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:23:29,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143950037] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:23:29,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:23:29,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 44 [2025-01-09 16:23:29,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27452985] [2025-01-09 16:23:29,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:23:29,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-01-09 16:23:29,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:23:29,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-01-09 16:23:29,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 16:23:29,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-01-09 16:23:29,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 676 transitions, 12942 flow. Second operand has 45 states, 45 states have (on average 6.955555555555556) internal successors, (313), 45 states have internal predecessors, (313), 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 16:23:29,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:23:29,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-01-09 16:23:29,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:23:35,934 INFO L124 PetriNetUnfolderBase]: 8806/16418 cut-off events. [2025-01-09 16:23:35,934 INFO L125 PetriNetUnfolderBase]: For 5490315/5490315 co-relation queries the response was YES. [2025-01-09 16:23:36,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201851 conditions, 16418 events. 8806/16418 cut-off events. For 5490315/5490315 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 99446 event pairs, 65 based on Foata normal form. 27/16439 useless extension candidates. Maximal degree in co-relation 201659. Up to 3717 conditions per place. [2025-01-09 16:23:36,185 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 341 selfloop transitions, 648 changer transitions 175/1167 dead transitions. [2025-01-09 16:23:36,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 1167 transitions, 30679 flow [2025-01-09 16:23:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-01-09 16:23:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2025-01-09 16:23:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 1052 transitions. [2025-01-09 16:23:36,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5038314176245211 [2025-01-09 16:23:36,187 INFO L175 Difference]: Start difference. First operand has 527 places, 676 transitions, 12942 flow. Second operand 87 states and 1052 transitions. [2025-01-09 16:23:36,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 1167 transitions, 30679 flow