./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 798582ee4a09ede0f5c496225fe921dfd53b0dfd5ded797f7106b8b9ef24e798 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:32:39,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:32:39,847 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:32:39,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:32:39,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:32:39,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:32:39,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:32:39,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:32:39,871 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:32:39,871 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:32:39,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:32:39,872 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:32:39,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:32:39,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:32:39,872 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:32:39,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:32:39,873 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:32:39,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:32:39,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:32:39,874 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 798582ee4a09ede0f5c496225fe921dfd53b0dfd5ded797f7106b8b9ef24e798 [2025-03-13 21:32:40,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:32:40,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:32:40,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:32:40,097 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:32:40,097 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:32:40,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i [2025-03-13 21:32:41,226 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb729b2d/75f48a6ff1f7422a98b60b00ed963f46/FLAG59d9cdda7 [2025-03-13 21:32:41,531 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:32:41,531 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i [2025-03-13 21:32:41,551 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb729b2d/75f48a6ff1f7422a98b60b00ed963f46/FLAG59d9cdda7 [2025-03-13 21:32:41,788 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb729b2d/75f48a6ff1f7422a98b60b00ed963f46 [2025-03-13 21:32:41,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:32:41,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:32:41,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:32:41,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:32:41,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:32:41,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:32:41" (1/1) ... [2025-03-13 21:32:41,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2427776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:41, skipping insertion in model container [2025-03-13 21:32:41,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:32:41" (1/1) ... [2025-03-13 21:32:41,829 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:32:41,949 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i[949,962] [2025-03-13 21:32:42,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:32:42,079 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:32:42,086 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i[949,962] [2025-03-13 21:32:42,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:32:42,170 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:32:42,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42 WrapperNode [2025-03-13 21:32:42,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:32:42,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:32:42,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:32:42,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:32:42,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,202 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2025-03-13 21:32:42,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:32:42,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:32:42,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:32:42,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:32:42,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,211 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,221 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-13 21:32:42,222 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,227 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:32:42,236 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:32:42,236 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:32:42,236 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:32:42,238 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (1/1) ... [2025-03-13 21:32:42,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:32:42,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:32:42,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-13 21:32:42,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-13 21:32:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:32:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:32:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:32:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:32:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:32:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:32:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-13 21:32:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-13 21:32:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-13 21:32:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-13 21:32:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:32:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:32:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:32:42,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:32:42,286 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:32:42,394 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:32:42,396 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:32:42,701 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:32:42,702 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:32:42,702 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:32:42,923 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:32:42,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:32:42 BoogieIcfgContainer [2025-03-13 21:32:42,923 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:32:42,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:32:42,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:32:42,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:32:42,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:32:41" (1/3) ... [2025-03-13 21:32:42,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391ff0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:32:42, skipping insertion in model container [2025-03-13 21:32:42,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:32:42" (2/3) ... [2025-03-13 21:32:42,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391ff0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:32:42, skipping insertion in model container [2025-03-13 21:32:42,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:32:42" (3/3) ... [2025-03-13 21:32:42,931 INFO L128 eAbstractionObserver]: Analyzing ICFG mix051_tso.oepc.i [2025-03-13 21:32:42,940 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:32:42,941 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix051_tso.oepc.i that has 5 procedures, 48 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-13 21:32:42,942 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:32:42,988 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:32:43,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 48 transitions, 112 flow [2025-03-13 21:32:43,047 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2025-03-13 21:32:43,048 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:32:43,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2025-03-13 21:32:43,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 48 transitions, 112 flow [2025-03-13 21:32:43,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 44 transitions, 100 flow [2025-03-13 21:32:43,064 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:32:43,072 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;@1399bd4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:32:43,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-13 21:32:43,078 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:32:43,079 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-13 21:32:43,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:32:43,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:43,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-13 21:32:43,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:43,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:43,084 INFO L85 PathProgramCache]: Analyzing trace with hash -913386212, now seen corresponding path program 1 times [2025-03-13 21:32:43,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:43,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081276170] [2025-03-13 21:32:43,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:43,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:43,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-13 21:32:43,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-13 21:32:43,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:43,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:43,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:43,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081276170] [2025-03-13 21:32:43,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081276170] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:43,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:43,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:32:43,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289080800] [2025-03-13 21:32:43,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:43,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:32:43,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:43,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:32:43,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:32:43,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-13 21:32:43,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:43,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:43,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-13 21:32:43,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:46,789 INFO L124 PetriNetUnfolderBase]: 34475/46024 cut-off events. [2025-03-13 21:32:46,789 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2025-03-13 21:32:46,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91908 conditions, 46024 events. 34475/46024 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 1456. Compared 274931 event pairs, 4245 based on Foata normal form. 1296/47097 useless extension candidates. Maximal degree in co-relation 91896. Up to 39291 conditions per place. [2025-03-13 21:32:47,078 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 57 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2025-03-13 21:32:47,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 276 flow [2025-03-13 21:32:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:32:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:32:47,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-13 21:32:47,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2025-03-13 21:32:47,093 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 100 flow. Second operand 3 states and 97 transitions. [2025-03-13 21:32:47,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 276 flow [2025-03-13 21:32:47,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-13 21:32:47,102 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 94 flow [2025-03-13 21:32:47,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2025-03-13 21:32:47,108 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2025-03-13 21:32:47,109 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 94 flow [2025-03-13 21:32:47,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:47,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:47,109 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:32:47,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:32:47,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:47,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash -673336528, now seen corresponding path program 1 times [2025-03-13 21:32:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:47,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214676382] [2025-03-13 21:32:47,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:47,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:47,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-13 21:32:47,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-13 21:32:47,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:47,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:47,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:47,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214676382] [2025-03-13 21:32:47,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214676382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:47,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:47,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:32:47,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594440721] [2025-03-13 21:32:47,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:47,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:32:47,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:47,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:32:47,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:32:47,683 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-13 21:32:47,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:47,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:47,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-13 21:32:47,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:51,473 INFO L124 PetriNetUnfolderBase]: 49475/66489 cut-off events. [2025-03-13 21:32:51,473 INFO L125 PetriNetUnfolderBase]: For 2388/2388 co-relation queries the response was YES. [2025-03-13 21:32:51,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134655 conditions, 66489 events. 49475/66489 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 2078. Compared 406924 event pairs, 19459 based on Foata normal form. 0/65262 useless extension candidates. Maximal degree in co-relation 134645. Up to 43215 conditions per place. [2025-03-13 21:32:51,792 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 65 selfloop transitions, 8 changer transitions 92/170 dead transitions. [2025-03-13 21:32:51,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 170 transitions, 704 flow [2025-03-13 21:32:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:32:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:32:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2025-03-13 21:32:51,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-03-13 21:32:51,794 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 9 states and 248 transitions. [2025-03-13 21:32:51,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 170 transitions, 704 flow [2025-03-13 21:32:51,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 170 transitions, 686 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:32:51,802 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 149 flow [2025-03-13 21:32:51,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2025-03-13 21:32:51,803 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2025-03-13 21:32:51,803 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 149 flow [2025-03-13 21:32:51,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:51,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:51,804 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:32:51,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:32:51,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:51,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:51,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1296649102, now seen corresponding path program 1 times [2025-03-13 21:32:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:51,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366599800] [2025-03-13 21:32:51,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:32:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:51,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-13 21:32:51,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:32:51,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:32:51,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:52,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:52,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366599800] [2025-03-13 21:32:52,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366599800] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:52,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:52,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:32:52,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864445819] [2025-03-13 21:32:52,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:52,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:32:52,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:52,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:32:52,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:32:52,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-13 21:32:52,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:52,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:52,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-13 21:32:52,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:32:56,250 INFO L124 PetriNetUnfolderBase]: 40377/54609 cut-off events. [2025-03-13 21:32:56,250 INFO L125 PetriNetUnfolderBase]: For 15029/15029 co-relation queries the response was YES. [2025-03-13 21:32:56,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126827 conditions, 54609 events. 40377/54609 cut-off events. For 15029/15029 co-relation queries the response was YES. Maximal size of possible extension queue 1655. Compared 328102 event pairs, 18832 based on Foata normal form. 1094/55700 useless extension candidates. Maximal degree in co-relation 126811. Up to 43729 conditions per place. [2025-03-13 21:32:56,603 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 83 selfloop transitions, 24 changer transitions 81/193 dead transitions. [2025-03-13 21:32:56,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 909 flow [2025-03-13 21:32:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-13 21:32:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-13 21:32:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 297 transitions. [2025-03-13 21:32:56,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515625 [2025-03-13 21:32:56,606 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 149 flow. Second operand 12 states and 297 transitions. [2025-03-13 21:32:56,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 909 flow [2025-03-13 21:32:57,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 193 transitions, 889 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-03-13 21:32:57,990 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 332 flow [2025-03-13 21:32:57,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=332, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2025-03-13 21:32:57,991 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2025-03-13 21:32:57,991 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 332 flow [2025-03-13 21:32:57,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:57,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:32:57,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:32:57,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:32:57,992 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:32:57,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:32:57,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1635390510, now seen corresponding path program 2 times [2025-03-13 21:32:57,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:32:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402319559] [2025-03-13 21:32:57,994 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:32:57,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:32:58,003 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-03-13 21:32:58,032 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-13 21:32:58,032 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:32:58,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:32:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:32:58,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:32:58,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402319559] [2025-03-13 21:32:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402319559] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:32:58,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:32:58,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:32:58,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158475936] [2025-03-13 21:32:58,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:32:58,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:32:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:32:58,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:32:58,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:32:58,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-13 21:32:58,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:32:58,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:32:58,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-13 21:32:58,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:01,067 INFO L124 PetriNetUnfolderBase]: 29017/40644 cut-off events. [2025-03-13 21:33:01,068 INFO L125 PetriNetUnfolderBase]: For 75187/75187 co-relation queries the response was YES. [2025-03-13 21:33:01,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130142 conditions, 40644 events. 29017/40644 cut-off events. For 75187/75187 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 256081 event pairs, 3201 based on Foata normal form. 1314/41945 useless extension candidates. Maximal degree in co-relation 130119. Up to 22061 conditions per place. [2025-03-13 21:33:01,354 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 97 selfloop transitions, 6 changer transitions 1/110 dead transitions. [2025-03-13 21:33:01,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 110 transitions, 730 flow [2025-03-13 21:33:01,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:33:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:33:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-13 21:33:01,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2025-03-13 21:33:01,355 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 332 flow. Second operand 4 states and 124 transitions. [2025-03-13 21:33:01,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 110 transitions, 730 flow [2025-03-13 21:33:01,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 110 transitions, 707 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-03-13 21:33:01,873 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 327 flow [2025-03-13 21:33:01,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2025-03-13 21:33:01,874 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2025-03-13 21:33:01,874 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 327 flow [2025-03-13 21:33:01,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:01,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:01,874 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:01,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:33:01,874 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:33:01,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1887809119, now seen corresponding path program 1 times [2025-03-13 21:33:01,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:01,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96282621] [2025-03-13 21:33:01,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:33:01,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:01,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-13 21:33:01,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:33:01,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:33:01,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:02,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:02,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96282621] [2025-03-13 21:33:02,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96282621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:02,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:02,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-13 21:33:02,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597207314] [2025-03-13 21:33:02,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:02,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-13 21:33:02,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:02,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-13 21:33:02,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-13 21:33:02,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-13 21:33:02,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 327 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:02,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:02,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-13 21:33:02,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:06,333 INFO L124 PetriNetUnfolderBase]: 32197/43896 cut-off events. [2025-03-13 21:33:06,333 INFO L125 PetriNetUnfolderBase]: For 76231/76231 co-relation queries the response was YES. [2025-03-13 21:33:06,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149176 conditions, 43896 events. 32197/43896 cut-off events. For 76231/76231 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 258675 event pairs, 12671 based on Foata normal form. 672/44562 useless extension candidates. Maximal degree in co-relation 149152. Up to 33421 conditions per place. [2025-03-13 21:33:06,640 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 115 selfloop transitions, 21 changer transitions 67/208 dead transitions. [2025-03-13 21:33:06,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 208 transitions, 1409 flow [2025-03-13 21:33:06,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-13 21:33:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-13 21:33:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 251 transitions. [2025-03-13 21:33:06,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5810185185185185 [2025-03-13 21:33:06,643 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 327 flow. Second operand 9 states and 251 transitions. [2025-03-13 21:33:06,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 208 transitions, 1409 flow [2025-03-13 21:33:06,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 208 transitions, 1380 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-13 21:33:06,701 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 485 flow [2025-03-13 21:33:06,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=485, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2025-03-13 21:33:06,701 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2025-03-13 21:33:06,701 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 485 flow [2025-03-13 21:33:06,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:06,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:06,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:06,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:33:06,702 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:33:06,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:06,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1187780181, now seen corresponding path program 1 times [2025-03-13 21:33:06,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:06,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003910716] [2025-03-13 21:33:06,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:33:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:06,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-13 21:33:06,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-13 21:33:06,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:33:06,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:06,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:06,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003910716] [2025-03-13 21:33:06,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003910716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:06,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:06,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:33:06,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64425565] [2025-03-13 21:33:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:06,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:33:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:06,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:33:06,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:33:06,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-13 21:33:06,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 485 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:06,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:06,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-13 21:33:06,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:08,943 INFO L124 PetriNetUnfolderBase]: 20222/28373 cut-off events. [2025-03-13 21:33:08,944 INFO L125 PetriNetUnfolderBase]: For 77058/77058 co-relation queries the response was YES. [2025-03-13 21:33:09,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103609 conditions, 28373 events. 20222/28373 cut-off events. For 77058/77058 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 167336 event pairs, 1810 based on Foata normal form. 1134/29494 useless extension candidates. Maximal degree in co-relation 103578. Up to 10453 conditions per place. [2025-03-13 21:33:09,113 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 147 selfloop transitions, 10 changer transitions 1/164 dead transitions. [2025-03-13 21:33:09,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 164 transitions, 1368 flow [2025-03-13 21:33:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:33:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:33:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-03-13 21:33:09,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-13 21:33:09,114 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 485 flow. Second operand 5 states and 160 transitions. [2025-03-13 21:33:09,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 164 transitions, 1368 flow [2025-03-13 21:33:09,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 164 transitions, 1310 flow, removed 14 selfloop flow, removed 6 redundant places. [2025-03-13 21:33:09,266 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 516 flow [2025-03-13 21:33:09,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=516, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2025-03-13 21:33:09,266 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2025-03-13 21:33:09,266 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 516 flow [2025-03-13 21:33:09,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:09,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:09,266 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:09,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:33:09,267 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:33:09,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash -889053638, now seen corresponding path program 1 times [2025-03-13 21:33:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:09,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734162914] [2025-03-13 21:33:09,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:33:09,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:09,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-13 21:33:09,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 21:33:09,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:33:09,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:09,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:09,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734162914] [2025-03-13 21:33:09,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734162914] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:09,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:09,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:33:09,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889011553] [2025-03-13 21:33:09,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:09,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:33:09,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:09,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:33:09,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:33:09,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-13 21:33:09,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 516 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:09,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:09,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-13 21:33:09,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:11,170 INFO L124 PetriNetUnfolderBase]: 12689/17690 cut-off events. [2025-03-13 21:33:11,171 INFO L125 PetriNetUnfolderBase]: For 51887/51887 co-relation queries the response was YES. [2025-03-13 21:33:11,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65817 conditions, 17690 events. 12689/17690 cut-off events. For 51887/51887 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 95498 event pairs, 1483 based on Foata normal form. 576/18253 useless extension candidates. Maximal degree in co-relation 65788. Up to 5316 conditions per place. [2025-03-13 21:33:11,344 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 160 selfloop transitions, 14 changer transitions 1/181 dead transitions. [2025-03-13 21:33:11,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 181 transitions, 1474 flow [2025-03-13 21:33:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:33:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:33:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2025-03-13 21:33:11,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2025-03-13 21:33:11,346 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 516 flow. Second operand 6 states and 194 transitions. [2025-03-13 21:33:11,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 181 transitions, 1474 flow [2025-03-13 21:33:11,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 181 transitions, 1422 flow, removed 16 selfloop flow, removed 4 redundant places. [2025-03-13 21:33:11,520 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 552 flow [2025-03-13 21:33:11,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=552, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2025-03-13 21:33:11,521 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2025-03-13 21:33:11,521 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 552 flow [2025-03-13 21:33:11,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:11,521 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:11,521 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:11,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 21:33:11,522 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:33:11,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash 504495794, now seen corresponding path program 1 times [2025-03-13 21:33:11,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614950246] [2025-03-13 21:33:11,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:33:11,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:11,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-13 21:33:11,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-13 21:33:11,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:33:11,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:11,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614950246] [2025-03-13 21:33:11,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614950246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:11,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:11,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-13 21:33:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337251763] [2025-03-13 21:33:11,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:11,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:33:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:11,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:33:11,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:33:11,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-13 21:33:11,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 552 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:11,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:11,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-13 21:33:11,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:13,768 INFO L124 PetriNetUnfolderBase]: 17671/24465 cut-off events. [2025-03-13 21:33:13,768 INFO L125 PetriNetUnfolderBase]: For 63451/63451 co-relation queries the response was YES. [2025-03-13 21:33:13,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91379 conditions, 24465 events. 17671/24465 cut-off events. For 63451/63451 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 134322 event pairs, 1573 based on Foata normal form. 120/24581 useless extension candidates. Maximal degree in co-relation 91349. Up to 13254 conditions per place. [2025-03-13 21:33:13,977 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 140 selfloop transitions, 16 changer transitions 76/237 dead transitions. [2025-03-13 21:33:13,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 237 transitions, 1975 flow [2025-03-13 21:33:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:33:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:33:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2025-03-13 21:33:13,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5651041666666666 [2025-03-13 21:33:13,978 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 552 flow. Second operand 8 states and 217 transitions. [2025-03-13 21:33:13,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 237 transitions, 1975 flow [2025-03-13 21:33:14,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 237 transitions, 1857 flow, removed 26 selfloop flow, removed 5 redundant places. [2025-03-13 21:33:14,207 INFO L231 Difference]: Finished difference. Result has 90 places, 92 transitions, 636 flow [2025-03-13 21:33:14,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=90, PETRI_TRANSITIONS=92} [2025-03-13 21:33:14,208 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2025-03-13 21:33:14,208 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 92 transitions, 636 flow [2025-03-13 21:33:14,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:14,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:14,208 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:14,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 21:33:14,208 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:33:14,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash 685238636, now seen corresponding path program 2 times [2025-03-13 21:33:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:14,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10165964] [2025-03-13 21:33:14,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:33:14,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:14,214 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-03-13 21:33:14,260 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-13 21:33:14,260 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:33:14,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:14,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:14,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:14,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10165964] [2025-03-13 21:33:14,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10165964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:14,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:14,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:33:14,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244652778] [2025-03-13 21:33:14,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:14,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:33:14,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:14,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:33:14,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:33:14,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-13 21:33:14,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 636 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:14,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:14,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-13 21:33:14,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:15,681 INFO L124 PetriNetUnfolderBase]: 14799/20353 cut-off events. [2025-03-13 21:33:15,681 INFO L125 PetriNetUnfolderBase]: For 58276/58285 co-relation queries the response was YES. [2025-03-13 21:33:15,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73858 conditions, 20353 events. 14799/20353 cut-off events. For 58276/58285 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 111882 event pairs, 1697 based on Foata normal form. 272/20614 useless extension candidates. Maximal degree in co-relation 73823. Up to 7134 conditions per place. [2025-03-13 21:33:15,872 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 128 selfloop transitions, 18 changer transitions 27/179 dead transitions. [2025-03-13 21:33:15,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 179 transitions, 1484 flow [2025-03-13 21:33:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:33:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:33:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2025-03-13 21:33:15,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5773809523809523 [2025-03-13 21:33:15,873 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 636 flow. Second operand 7 states and 194 transitions. [2025-03-13 21:33:15,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 179 transitions, 1484 flow [2025-03-13 21:33:16,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 179 transitions, 1398 flow, removed 28 selfloop flow, removed 6 redundant places. [2025-03-13 21:33:16,173 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 515 flow [2025-03-13 21:33:16,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2025-03-13 21:33:16,174 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2025-03-13 21:33:16,174 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 515 flow [2025-03-13 21:33:16,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:16,174 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:16,174 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:16,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-13 21:33:16,175 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:33:16,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:16,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1772976396, now seen corresponding path program 1 times [2025-03-13 21:33:16,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:16,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581770287] [2025-03-13 21:33:16,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:33:16,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:16,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-13 21:33:16,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-13 21:33:16,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:33:16,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:16,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:16,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581770287] [2025-03-13 21:33:16,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581770287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:16,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:16,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:33:16,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409427601] [2025-03-13 21:33:16,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:16,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:33:16,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:16,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:33:16,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:33:16,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-13 21:33:16,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 515 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:16,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:16,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-13 21:33:16,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:17,629 INFO L124 PetriNetUnfolderBase]: 11647/16279 cut-off events. [2025-03-13 21:33:17,629 INFO L125 PetriNetUnfolderBase]: For 40238/40246 co-relation queries the response was YES. [2025-03-13 21:33:17,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59334 conditions, 16279 events. 11647/16279 cut-off events. For 40238/40246 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 87438 event pairs, 1523 based on Foata normal form. 16/16284 useless extension candidates. Maximal degree in co-relation 59301. Up to 7825 conditions per place. [2025-03-13 21:33:17,730 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 85 selfloop transitions, 1 changer transitions 83/174 dead transitions. [2025-03-13 21:33:17,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 174 transitions, 1468 flow [2025-03-13 21:33:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:33:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:33:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2025-03-13 21:33:17,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2025-03-13 21:33:17,731 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 515 flow. Second operand 6 states and 136 transitions. [2025-03-13 21:33:17,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 174 transitions, 1468 flow [2025-03-13 21:33:17,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 174 transitions, 1187 flow, removed 62 selfloop flow, removed 14 redundant places. [2025-03-13 21:33:17,900 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 318 flow [2025-03-13 21:33:17,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2025-03-13 21:33:17,900 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2025-03-13 21:33:17,900 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 318 flow [2025-03-13 21:33:17,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:17,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:17,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:17,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-13 21:33:17,901 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:33:17,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:17,901 INFO L85 PathProgramCache]: Analyzing trace with hash 297690938, now seen corresponding path program 2 times [2025-03-13 21:33:17,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:17,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743137880] [2025-03-13 21:33:17,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:33:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:17,908 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 1 equivalence classes. [2025-03-13 21:33:17,919 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-13 21:33:17,919 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:33:17,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743137880] [2025-03-13 21:33:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743137880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:18,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:18,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-13 21:33:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329367443] [2025-03-13 21:33:18,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:18,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:33:18,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:18,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:33:18,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:33:18,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-13 21:33:18,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 318 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:18,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:18,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-13 21:33:18,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:19,150 INFO L124 PetriNetUnfolderBase]: 9878/14025 cut-off events. [2025-03-13 21:33:19,150 INFO L125 PetriNetUnfolderBase]: For 15454/15454 co-relation queries the response was YES. [2025-03-13 21:33:19,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41957 conditions, 14025 events. 9878/14025 cut-off events. For 15454/15454 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75867 event pairs, 1815 based on Foata normal form. 16/14040 useless extension candidates. Maximal degree in co-relation 41930. Up to 8140 conditions per place. [2025-03-13 21:33:19,242 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 76 selfloop transitions, 3 changer transitions 80/164 dead transitions. [2025-03-13 21:33:19,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 164 transitions, 1027 flow [2025-03-13 21:33:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-13 21:33:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-13 21:33:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2025-03-13 21:33:19,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2025-03-13 21:33:19,244 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 318 flow. Second operand 8 states and 178 transitions. [2025-03-13 21:33:19,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 164 transitions, 1027 flow [2025-03-13 21:33:19,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 164 transitions, 1008 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-13 21:33:19,261 INFO L231 Difference]: Finished difference. Result has 83 places, 60 transitions, 262 flow [2025-03-13 21:33:19,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=262, PETRI_PLACES=83, PETRI_TRANSITIONS=60} [2025-03-13 21:33:19,262 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2025-03-13 21:33:19,262 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 60 transitions, 262 flow [2025-03-13 21:33:19,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 21:33:19,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:19,262 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:19,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-13 21:33:19,263 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-13 21:33:19,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1776331126, now seen corresponding path program 3 times [2025-03-13 21:33:19,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:19,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453571082] [2025-03-13 21:33:19,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:33:19,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:19,272 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 1 equivalence classes. [2025-03-13 21:33:19,316 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-13 21:33:19,316 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:33:19,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat