./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:33:59,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:33:59,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:33:59,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:33:59,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:33:59,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:33:59,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:33:59,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:33:59,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:33:59,158 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:33:59,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:33:59,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:33:59,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:33:59,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:33:59,158 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:33:59,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:33:59,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:33:59,159 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:33:59,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:33:59,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:33:59,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:33:59,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:33:59,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:33:59,160 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:33:59,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:33:59,160 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2025-02-06 04:33:59,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:33:59,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:33:59,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:33:59,394 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:33:59,395 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:33:59,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2025-02-06 04:34:00,505 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d14b06fb6/5679de06048144e9a0079e7706cb72a6/FLAG3e9029f65 [2025-02-06 04:34:00,769 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:34:00,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2025-02-06 04:34:00,780 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d14b06fb6/5679de06048144e9a0079e7706cb72a6/FLAG3e9029f65 [2025-02-06 04:34:01,071 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d14b06fb6/5679de06048144e9a0079e7706cb72a6 [2025-02-06 04:34:01,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:34:01,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:34:01,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:34:01,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:34:01,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:34:01,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593a7904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01, skipping insertion in model container [2025-02-06 04:34:01,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:34:01,228 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2025-02-06 04:34:01,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:34:01,247 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:34:01,270 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2025-02-06 04:34:01,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:34:01,293 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:34:01,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01 WrapperNode [2025-02-06 04:34:01,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:34:01,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:34:01,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:34:01,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:34:01,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,335 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 298 [2025-02-06 04:34:01,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:34:01,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:34:01,337 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:34:01,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:34:01,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,369 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 04:34:01,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,376 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:34:01,388 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:34:01,388 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:34:01,388 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:34:01,389 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (1/1) ... [2025-02-06 04:34:01,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:34:01,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:34:01,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:34:01,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:34:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:34:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:34:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:34:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:34:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:34:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:34:01,440 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:34:01,523 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:34:01,525 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:34:01,854 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:34:01,854 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:34:02,108 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:34:02,108 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:34:02,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:34:02 BoogieIcfgContainer [2025-02-06 04:34:02,108 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:34:02,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:34:02,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:34:02,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:34:02,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:34:01" (1/3) ... [2025-02-06 04:34:02,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e3bbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:34:02, skipping insertion in model container [2025-02-06 04:34:02,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:01" (2/3) ... [2025-02-06 04:34:02,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e3bbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:34:02, skipping insertion in model container [2025-02-06 04:34:02,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:34:02" (3/3) ... [2025-02-06 04:34:02,116 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2025-02-06 04:34:02,129 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:34:02,130 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-subst.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-06 04:34:02,130 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:34:02,180 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:34:02,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 93 flow [2025-02-06 04:34:02,233 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2025-02-06 04:34:02,234 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:34:02,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 7/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-06 04:34:02,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 93 flow [2025-02-06 04:34:02,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 82 flow [2025-02-06 04:34:02,250 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:34:02,262 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;@5a649125, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:34:02,262 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:34:02,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:34:02,277 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2025-02-06 04:34:02,277 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:34:02,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:02,278 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:02,278 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:02,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:02,283 INFO L85 PathProgramCache]: Analyzing trace with hash 504047835, now seen corresponding path program 1 times [2025-02-06 04:34:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:02,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896596548] [2025-02-06 04:34:02,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:02,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:02,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:34:02,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:34:02,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:02,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:34:02,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:02,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896596548] [2025-02-06 04:34:02,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896596548] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:02,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:02,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:34:02,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063513646] [2025-02-06 04:34:02,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:02,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 04:34:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:02,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 04:34:02,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 04:34:02,492 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:02,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:02,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:02,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:02,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:02,720 INFO L124 PetriNetUnfolderBase]: 792/1137 cut-off events. [2025-02-06 04:34:02,721 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2025-02-06 04:34:02,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1137 events. 792/1137 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3723 event pairs, 608 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 2150. Up to 1137 conditions per place. [2025-02-06 04:34:02,733 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 28 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2025-02-06 04:34:02,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 132 flow [2025-02-06 04:34:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 04:34:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 04:34:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2025-02-06 04:34:02,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-02-06 04:34:02,745 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 82 flow. Second operand 2 states and 39 transitions. [2025-02-06 04:34:02,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 132 flow [2025-02-06 04:34:02,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:34:02,750 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 64 flow [2025-02-06 04:34:02,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2025-02-06 04:34:02,754 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2025-02-06 04:34:02,754 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 64 flow [2025-02-06 04:34:02,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:02,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:02,755 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] [2025-02-06 04:34:02,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:34:02,755 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:02,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:02,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1546506045, now seen corresponding path program 1 times [2025-02-06 04:34:02,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:02,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341656319] [2025-02-06 04:34:02,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:02,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:02,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:34:02,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:34:02,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:02,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:34:02,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:02,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341656319] [2025-02-06 04:34:02,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341656319] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:02,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:02,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:34:02,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119413594] [2025-02-06 04:34:02,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:02,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:34:02,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:02,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:34:02,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:34:02,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:02,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:02,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:02,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:02,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:03,120 INFO L124 PetriNetUnfolderBase]: 792/1138 cut-off events. [2025-02-06 04:34:03,122 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-06 04:34:03,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1138 events. 792/1138 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3723 event pairs, 608 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 2306. Up to 1137 conditions per place. [2025-02-06 04:34:03,129 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2025-02-06 04:34:03,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 124 flow [2025-02-06 04:34:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:34:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:34:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2025-02-06 04:34:03,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2025-02-06 04:34:03,131 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 64 flow. Second operand 3 states and 42 transitions. [2025-02-06 04:34:03,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 124 flow [2025-02-06 04:34:03,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:34:03,133 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 76 flow [2025-02-06 04:34:03,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2025-02-06 04:34:03,134 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2025-02-06 04:34:03,134 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 76 flow [2025-02-06 04:34:03,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:03,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:03,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:03,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:34:03,134 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:03,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1433334371, now seen corresponding path program 1 times [2025-02-06 04:34:03,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:03,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207872531] [2025-02-06 04:34:03,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:03,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:03,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:34:03,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:34:03,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:03,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:34:03,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:03,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207872531] [2025-02-06 04:34:03,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207872531] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:34:03,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299817310] [2025-02-06 04:34:03,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:03,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:03,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:34:03,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:34:03,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:34:03,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:34:03,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:34:03,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:03,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:03,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 04:34:03,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:34:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:34:03,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:34:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:34:03,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299817310] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:34:03,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:34:03,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-06 04:34:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362743704] [2025-02-06 04:34:03,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:34:03,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:34:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:03,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:34:03,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:34:03,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:03,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:03,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:03,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:03,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:03,603 INFO L124 PetriNetUnfolderBase]: 792/1140 cut-off events. [2025-02-06 04:34:03,604 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-02-06 04:34:03,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1140 events. 792/1140 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3723 event pairs, 608 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 2317. Up to 1137 conditions per place. [2025-02-06 04:34:03,609 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2025-02-06 04:34:03,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 146 flow [2025-02-06 04:34:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:34:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:34:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2025-02-06 04:34:03,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2025-02-06 04:34:03,610 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 76 flow. Second operand 5 states and 53 transitions. [2025-02-06 04:34:03,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 146 flow [2025-02-06 04:34:03,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:03,612 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 98 flow [2025-02-06 04:34:03,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2025-02-06 04:34:03,612 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2025-02-06 04:34:03,612 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 98 flow [2025-02-06 04:34:03,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:03,612 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:03,613 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:03,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:34:03,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:03,817 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:03,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1797439901, now seen corresponding path program 2 times [2025-02-06 04:34:03,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:03,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215036388] [2025-02-06 04:34:03,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:34:03,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:03,835 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:34:03,878 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-02-06 04:34:03,879 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:34:03,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:04,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:04,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215036388] [2025-02-06 04:34:04,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215036388] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:04,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:04,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:34:04,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625519023] [2025-02-06 04:34:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:04,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:34:04,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:04,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:34:04,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:34:04,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:04,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:04,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:04,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:04,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:04,813 INFO L124 PetriNetUnfolderBase]: 1926/2789 cut-off events. [2025-02-06 04:34:04,813 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2025-02-06 04:34:04,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 2789 events. 1926/2789 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11906 event pairs, 608 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 5639. Up to 1184 conditions per place. [2025-02-06 04:34:04,824 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 75 selfloop transitions, 7 changer transitions 11/94 dead transitions. [2025-02-06 04:34:04,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 94 transitions, 421 flow [2025-02-06 04:34:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:34:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:34:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2025-02-06 04:34:04,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2025-02-06 04:34:04,827 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 98 flow. Second operand 6 states and 115 transitions. [2025-02-06 04:34:04,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 94 transitions, 421 flow [2025-02-06 04:34:04,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 94 transitions, 411 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:04,829 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 139 flow [2025-02-06 04:34:04,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2025-02-06 04:34:04,830 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2025-02-06 04:34:04,830 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 139 flow [2025-02-06 04:34:04,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:04,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:04,830 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:04,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:34:04,830 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:04,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:04,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1511299577, now seen corresponding path program 3 times [2025-02-06 04:34:04,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:04,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464975420] [2025-02-06 04:34:04,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:34:04,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:04,844 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-02-06 04:34:04,866 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-02-06 04:34:04,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:34:04,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:05,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:05,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464975420] [2025-02-06 04:34:05,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464975420] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:05,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603661097] [2025-02-06 04:34:05,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:05,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:05,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:05,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:05,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:05,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:05,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 139 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:05,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:05,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:05,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:06,231 INFO L124 PetriNetUnfolderBase]: 3751/5506 cut-off events. [2025-02-06 04:34:06,231 INFO L125 PetriNetUnfolderBase]: For 2402/2402 co-relation queries the response was YES. [2025-02-06 04:34:06,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13523 conditions, 5506 events. 3751/5506 cut-off events. For 2402/2402 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 27869 event pairs, 1525 based on Foata normal form. 1/5207 useless extension candidates. Maximal degree in co-relation 13511. Up to 2756 conditions per place. [2025-02-06 04:34:06,262 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 110 selfloop transitions, 11 changer transitions 4/126 dead transitions. [2025-02-06 04:34:06,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 126 transitions, 711 flow [2025-02-06 04:34:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:06,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2025-02-06 04:34:06,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2025-02-06 04:34:06,264 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 139 flow. Second operand 7 states and 125 transitions. [2025-02-06 04:34:06,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 126 transitions, 711 flow [2025-02-06 04:34:06,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 126 transitions, 705 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:06,272 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 247 flow [2025-02-06 04:34:06,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2025-02-06 04:34:06,275 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2025-02-06 04:34:06,275 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 247 flow [2025-02-06 04:34:06,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:06,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:06,276 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:06,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:34:06,276 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:06,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:06,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1848331513, now seen corresponding path program 4 times [2025-02-06 04:34:06,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:06,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208524936] [2025-02-06 04:34:06,276 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:34:06,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:06,290 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:34:06,314 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:34:06,315 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:34:06,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208524936] [2025-02-06 04:34:06,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208524936] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:06,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:06,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:06,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593716284] [2025-02-06 04:34:06,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:06,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:06,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:06,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:06,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:06,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:06,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:06,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:06,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:06,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:07,960 INFO L124 PetriNetUnfolderBase]: 5698/8334 cut-off events. [2025-02-06 04:34:07,961 INFO L125 PetriNetUnfolderBase]: For 8355/8355 co-relation queries the response was YES. [2025-02-06 04:34:07,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23714 conditions, 8334 events. 5698/8334 cut-off events. For 8355/8355 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 43447 event pairs, 2209 based on Foata normal form. 1/8335 useless extension candidates. Maximal degree in co-relation 23697. Up to 3833 conditions per place. [2025-02-06 04:34:08,011 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 94 selfloop transitions, 27 changer transitions 2/124 dead transitions. [2025-02-06 04:34:08,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 124 transitions, 783 flow [2025-02-06 04:34:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:08,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:08,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2025-02-06 04:34:08,017 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2025-02-06 04:34:08,017 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 247 flow. Second operand 7 states and 125 transitions. [2025-02-06 04:34:08,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 124 transitions, 783 flow [2025-02-06 04:34:08,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 124 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:08,033 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 466 flow [2025-02-06 04:34:08,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=466, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2025-02-06 04:34:08,034 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2025-02-06 04:34:08,035 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 466 flow [2025-02-06 04:34:08,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:08,035 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:08,035 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:08,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:34:08,036 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:08,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash -415157073, now seen corresponding path program 5 times [2025-02-06 04:34:08,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:08,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904436320] [2025-02-06 04:34:08,036 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:34:08,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:08,054 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-02-06 04:34:08,091 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:34:08,091 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 04:34:08,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:34:08,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904436320] [2025-02-06 04:34:08,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904436320] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:34:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501051449] [2025-02-06 04:34:08,675 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:34:08,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:08,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:34:08,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:34:08,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:34:08,744 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-02-06 04:34:08,772 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:34:08,772 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 04:34:08,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:08,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 04:34:08,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:34:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:08,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:34:08,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501051449] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:08,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:34:08,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2025-02-06 04:34:08,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361050672] [2025-02-06 04:34:08,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:08,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:34:08,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:08,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:34:08,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:34:08,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:08,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 466 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:08,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:08,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:08,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:09,852 INFO L124 PetriNetUnfolderBase]: 5698/8328 cut-off events. [2025-02-06 04:34:09,852 INFO L125 PetriNetUnfolderBase]: For 18711/18711 co-relation queries the response was YES. [2025-02-06 04:34:09,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27830 conditions, 8328 events. 5698/8328 cut-off events. For 18711/18711 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 43915 event pairs, 2290 based on Foata normal form. 3/8331 useless extension candidates. Maximal degree in co-relation 27808. Up to 3757 conditions per place. [2025-02-06 04:34:09,893 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 19 changer transitions 15/137 dead transitions. [2025-02-06 04:34:09,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 137 transitions, 1127 flow [2025-02-06 04:34:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:34:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:34:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2025-02-06 04:34:09,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2025-02-06 04:34:09,895 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 466 flow. Second operand 6 states and 109 transitions. [2025-02-06 04:34:09,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 137 transitions, 1127 flow [2025-02-06 04:34:09,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 137 transitions, 1101 flow, removed 13 selfloop flow, removed 0 redundant places. [2025-02-06 04:34:09,929 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 588 flow [2025-02-06 04:34:09,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2025-02-06 04:34:09,930 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 39 predicate places. [2025-02-06 04:34:09,930 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 588 flow [2025-02-06 04:34:09,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:09,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:09,930 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:09,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 04:34:10,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:10,135 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:10,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:10,135 INFO L85 PathProgramCache]: Analyzing trace with hash -52802029, now seen corresponding path program 6 times [2025-02-06 04:34:10,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:10,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988332293] [2025-02-06 04:34:10,135 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:34:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:10,149 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 3 equivalence classes. [2025-02-06 04:34:10,159 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-02-06 04:34:10,160 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:34:10,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:10,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:10,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988332293] [2025-02-06 04:34:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988332293] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:10,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:10,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:34:10,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087808062] [2025-02-06 04:34:10,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:10,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:34:10,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:10,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:34:10,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:34:10,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:10,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:10,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:10,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:10,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:11,481 INFO L124 PetriNetUnfolderBase]: 5664/8259 cut-off events. [2025-02-06 04:34:11,481 INFO L125 PetriNetUnfolderBase]: For 26992/26992 co-relation queries the response was YES. [2025-02-06 04:34:11,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29728 conditions, 8259 events. 5664/8259 cut-off events. For 26992/26992 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 43390 event pairs, 2158 based on Foata normal form. 3/8262 useless extension candidates. Maximal degree in co-relation 29701. Up to 3757 conditions per place. [2025-02-06 04:34:11,536 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 92 selfloop transitions, 23 changer transitions 13/129 dead transitions. [2025-02-06 04:34:11,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 129 transitions, 1100 flow [2025-02-06 04:34:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:34:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:34:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2025-02-06 04:34:11,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2025-02-06 04:34:11,537 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 588 flow. Second operand 6 states and 110 transitions. [2025-02-06 04:34:11,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 129 transitions, 1100 flow [2025-02-06 04:34:11,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 129 transitions, 1085 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 04:34:11,586 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 675 flow [2025-02-06 04:34:11,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=675, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2025-02-06 04:34:11,587 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 44 predicate places. [2025-02-06 04:34:11,587 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 675 flow [2025-02-06 04:34:11,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:11,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:11,587 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:11,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:34:11,587 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:11,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:11,588 INFO L85 PathProgramCache]: Analyzing trace with hash -148058375, now seen corresponding path program 7 times [2025-02-06 04:34:11,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:11,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611009246] [2025-02-06 04:34:11,588 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:34:11,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:11,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 04:34:11,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:34:11,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:11,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:12,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:12,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611009246] [2025-02-06 04:34:12,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611009246] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:12,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:12,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:12,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680622205] [2025-02-06 04:34:12,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:12,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:12,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:12,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:12,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:12,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:12,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 675 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:12,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:12,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:12,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:13,103 INFO L124 PetriNetUnfolderBase]: 6944/10109 cut-off events. [2025-02-06 04:34:13,103 INFO L125 PetriNetUnfolderBase]: For 41656/41656 co-relation queries the response was YES. [2025-02-06 04:34:13,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37859 conditions, 10109 events. 6944/10109 cut-off events. For 41656/41656 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 55876 event pairs, 2405 based on Foata normal form. 1/10110 useless extension candidates. Maximal degree in co-relation 37830. Up to 4318 conditions per place. [2025-02-06 04:34:13,148 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 151 selfloop transitions, 34 changer transitions 1/187 dead transitions. [2025-02-06 04:34:13,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 187 transitions, 1987 flow [2025-02-06 04:34:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2025-02-06 04:34:13,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2025-02-06 04:34:13,149 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 675 flow. Second operand 7 states and 130 transitions. [2025-02-06 04:34:13,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 187 transitions, 1987 flow [2025-02-06 04:34:13,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 187 transitions, 1888 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-02-06 04:34:13,200 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 1074 flow [2025-02-06 04:34:13,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1074, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2025-02-06 04:34:13,201 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 51 predicate places. [2025-02-06 04:34:13,201 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 1074 flow [2025-02-06 04:34:13,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:13,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:13,202 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:13,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:34:13,202 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:13,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2111655145, now seen corresponding path program 8 times [2025-02-06 04:34:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:13,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244110026] [2025-02-06 04:34:13,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:34:13,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:13,211 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:34:13,229 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-02-06 04:34:13,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:34:13,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244110026] [2025-02-06 04:34:13,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244110026] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:13,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:13,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:34:13,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709215189] [2025-02-06 04:34:13,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:13,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:34:13,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:13,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:34:13,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:34:13,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:13,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 1074 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:13,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:13,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:13,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:14,313 INFO L124 PetriNetUnfolderBase]: 6957/10157 cut-off events. [2025-02-06 04:34:14,313 INFO L125 PetriNetUnfolderBase]: For 49269/49269 co-relation queries the response was YES. [2025-02-06 04:34:14,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40061 conditions, 10157 events. 6957/10157 cut-off events. For 49269/49269 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 54847 event pairs, 2803 based on Foata normal form. 3/10160 useless extension candidates. Maximal degree in co-relation 40028. Up to 4345 conditions per place. [2025-02-06 04:34:14,368 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 100 selfloop transitions, 46 changer transitions 16/163 dead transitions. [2025-02-06 04:34:14,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 163 transitions, 1836 flow [2025-02-06 04:34:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:34:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:34:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2025-02-06 04:34:14,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2025-02-06 04:34:14,369 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 1074 flow. Second operand 6 states and 105 transitions. [2025-02-06 04:34:14,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 163 transitions, 1836 flow [2025-02-06 04:34:14,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 163 transitions, 1800 flow, removed 18 selfloop flow, removed 0 redundant places. [2025-02-06 04:34:14,446 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 1288 flow [2025-02-06 04:34:14,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1288, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2025-02-06 04:34:14,447 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 60 predicate places. [2025-02-06 04:34:14,447 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 1288 flow [2025-02-06 04:34:14,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:14,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:14,447 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:14,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:34:14,447 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:14,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1412262479, now seen corresponding path program 9 times [2025-02-06 04:34:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:14,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726594986] [2025-02-06 04:34:14,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:34:14,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:14,455 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-02-06 04:34:14,464 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-02-06 04:34:14,467 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:34:14,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:14,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:14,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726594986] [2025-02-06 04:34:14,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726594986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:14,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:14,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:34:14,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687731919] [2025-02-06 04:34:14,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:14,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:34:14,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:14,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:34:14,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:34:14,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:14,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 1288 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:14,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:14,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:14,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:15,605 INFO L124 PetriNetUnfolderBase]: 6911/10058 cut-off events. [2025-02-06 04:34:15,605 INFO L125 PetriNetUnfolderBase]: For 62531/62531 co-relation queries the response was YES. [2025-02-06 04:34:15,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42171 conditions, 10058 events. 6911/10058 cut-off events. For 62531/62531 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 54060 event pairs, 2573 based on Foata normal form. 4/10062 useless extension candidates. Maximal degree in co-relation 42133. Up to 4001 conditions per place. [2025-02-06 04:34:15,668 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 97 selfloop transitions, 55 changer transitions 19/172 dead transitions. [2025-02-06 04:34:15,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 172 transitions, 2096 flow [2025-02-06 04:34:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:34:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:34:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2025-02-06 04:34:15,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2025-02-06 04:34:15,670 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 1288 flow. Second operand 6 states and 110 transitions. [2025-02-06 04:34:15,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 172 transitions, 2096 flow [2025-02-06 04:34:15,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 172 transitions, 2037 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-02-06 04:34:15,805 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 1476 flow [2025-02-06 04:34:15,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1476, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2025-02-06 04:34:15,806 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 65 predicate places. [2025-02-06 04:34:15,806 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 1476 flow [2025-02-06 04:34:15,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:15,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:15,806 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:15,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 04:34:15,806 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:15,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2133215253, now seen corresponding path program 10 times [2025-02-06 04:34:15,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:15,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874283938] [2025-02-06 04:34:15,806 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:34:15,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:15,814 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-06 04:34:15,822 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:34:15,823 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:34:15,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:16,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:16,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874283938] [2025-02-06 04:34:16,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874283938] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:16,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:16,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:34:16,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148198687] [2025-02-06 04:34:16,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:16,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:34:16,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:16,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:34:16,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:34:16,059 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:16,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 1476 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:16,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:16,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:16,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:17,217 INFO L124 PetriNetUnfolderBase]: 6855/9943 cut-off events. [2025-02-06 04:34:17,217 INFO L125 PetriNetUnfolderBase]: For 70979/70979 co-relation queries the response was YES. [2025-02-06 04:34:17,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42688 conditions, 9943 events. 6855/9943 cut-off events. For 70979/70979 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 53098 event pairs, 2491 based on Foata normal form. 4/9947 useless extension candidates. Maximal degree in co-relation 42648. Up to 4001 conditions per place. [2025-02-06 04:34:17,290 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 93 selfloop transitions, 53 changer transitions 17/164 dead transitions. [2025-02-06 04:34:17,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 164 transitions, 2093 flow [2025-02-06 04:34:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:34:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:34:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-02-06 04:34:17,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-06 04:34:17,291 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 1476 flow. Second operand 6 states and 108 transitions. [2025-02-06 04:34:17,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 164 transitions, 2093 flow [2025-02-06 04:34:17,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 1978 flow, removed 19 selfloop flow, removed 4 redundant places. [2025-02-06 04:34:17,467 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 1431 flow [2025-02-06 04:34:17,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1431, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2025-02-06 04:34:17,471 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 66 predicate places. [2025-02-06 04:34:17,471 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 1431 flow [2025-02-06 04:34:17,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:17,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:17,471 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:17,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 04:34:17,473 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:17,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash -490733412, now seen corresponding path program 1 times [2025-02-06 04:34:17,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:17,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060052937] [2025-02-06 04:34:17,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:17,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:17,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 04:34:17,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:34:17,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:17,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:17,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:17,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060052937] [2025-02-06 04:34:17,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060052937] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:17,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:17,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:17,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116526798] [2025-02-06 04:34:17,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:17,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:17,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:17,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:17,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:17,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:17,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 1431 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:17,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:17,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:17,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:19,193 INFO L124 PetriNetUnfolderBase]: 10533/15494 cut-off events. [2025-02-06 04:34:19,193 INFO L125 PetriNetUnfolderBase]: For 107304/107304 co-relation queries the response was YES. [2025-02-06 04:34:19,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65190 conditions, 15494 events. 10533/15494 cut-off events. For 107304/107304 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 93682 event pairs, 2910 based on Foata normal form. 13/15507 useless extension candidates. Maximal degree in co-relation 65151. Up to 4698 conditions per place. [2025-02-06 04:34:19,266 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 241 selfloop transitions, 24 changer transitions 1/267 dead transitions. [2025-02-06 04:34:19,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 267 transitions, 3882 flow [2025-02-06 04:34:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2025-02-06 04:34:19,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2025-02-06 04:34:19,267 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 1431 flow. Second operand 7 states and 142 transitions. [2025-02-06 04:34:19,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 267 transitions, 3882 flow [2025-02-06 04:34:19,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 267 transitions, 3636 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-02-06 04:34:19,505 INFO L231 Difference]: Finished difference. Result has 106 places, 118 transitions, 1647 flow [2025-02-06 04:34:19,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1647, PETRI_PLACES=106, PETRI_TRANSITIONS=118} [2025-02-06 04:34:19,505 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 71 predicate places. [2025-02-06 04:34:19,505 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 118 transitions, 1647 flow [2025-02-06 04:34:19,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:19,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:19,506 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:19,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 04:34:19,506 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:19,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:19,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2092539242, now seen corresponding path program 2 times [2025-02-06 04:34:19,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:19,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294116377] [2025-02-06 04:34:19,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:34:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:19,513 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 04:34:19,530 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:34:19,530 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:34:19,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:19,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:19,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294116377] [2025-02-06 04:34:19,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294116377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:19,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:19,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:19,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429279110] [2025-02-06 04:34:19,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:19,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:19,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:19,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:19,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:19,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:19,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 118 transitions, 1647 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:19,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:19,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:19,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:21,352 INFO L124 PetriNetUnfolderBase]: 12409/18250 cut-off events. [2025-02-06 04:34:21,352 INFO L125 PetriNetUnfolderBase]: For 123064/123064 co-relation queries the response was YES. [2025-02-06 04:34:21,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78163 conditions, 18250 events. 12409/18250 cut-off events. For 123064/123064 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 111996 event pairs, 2147 based on Foata normal form. 8/18258 useless extension candidates. Maximal degree in co-relation 78120. Up to 7652 conditions per place. [2025-02-06 04:34:21,532 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 185 selfloop transitions, 39 changer transitions 1/226 dead transitions. [2025-02-06 04:34:21,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 226 transitions, 2957 flow [2025-02-06 04:34:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2025-02-06 04:34:21,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2025-02-06 04:34:21,533 INFO L175 Difference]: Start difference. First operand has 106 places, 118 transitions, 1647 flow. Second operand 7 states and 130 transitions. [2025-02-06 04:34:21,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 226 transitions, 2957 flow [2025-02-06 04:34:21,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 226 transitions, 2925 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:21,896 INFO L231 Difference]: Finished difference. Result has 115 places, 129 transitions, 1950 flow [2025-02-06 04:34:21,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1950, PETRI_PLACES=115, PETRI_TRANSITIONS=129} [2025-02-06 04:34:21,896 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 80 predicate places. [2025-02-06 04:34:21,896 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 129 transitions, 1950 flow [2025-02-06 04:34:21,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:21,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:21,897 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:21,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 04:34:21,897 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:21,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:21,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1935467448, now seen corresponding path program 1 times [2025-02-06 04:34:21,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:21,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273082293] [2025-02-06 04:34:21,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:21,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:21,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 04:34:21,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:34:21,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:21,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:22,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:22,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273082293] [2025-02-06 04:34:22,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273082293] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:22,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:22,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703112886] [2025-02-06 04:34:22,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:22,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:22,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:22,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:22,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:22,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 129 transitions, 1950 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:22,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:22,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:22,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:24,163 INFO L124 PetriNetUnfolderBase]: 14841/21920 cut-off events. [2025-02-06 04:34:24,164 INFO L125 PetriNetUnfolderBase]: For 166417/166417 co-relation queries the response was YES. [2025-02-06 04:34:24,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94815 conditions, 21920 events. 14841/21920 cut-off events. For 166417/166417 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 137383 event pairs, 2565 based on Foata normal form. 12/21932 useless extension candidates. Maximal degree in co-relation 94768. Up to 13109 conditions per place. [2025-02-06 04:34:24,383 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 220 selfloop transitions, 33 changer transitions 1/255 dead transitions. [2025-02-06 04:34:24,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 255 transitions, 3883 flow [2025-02-06 04:34:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2025-02-06 04:34:24,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2025-02-06 04:34:24,384 INFO L175 Difference]: Start difference. First operand has 115 places, 129 transitions, 1950 flow. Second operand 7 states and 121 transitions. [2025-02-06 04:34:24,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 255 transitions, 3883 flow [2025-02-06 04:34:24,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 255 transitions, 3763 flow, removed 23 selfloop flow, removed 2 redundant places. [2025-02-06 04:34:24,929 INFO L231 Difference]: Finished difference. Result has 124 places, 144 transitions, 2266 flow [2025-02-06 04:34:24,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2266, PETRI_PLACES=124, PETRI_TRANSITIONS=144} [2025-02-06 04:34:24,930 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 89 predicate places. [2025-02-06 04:34:24,930 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 144 transitions, 2266 flow [2025-02-06 04:34:24,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:24,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:24,930 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:24,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 04:34:24,930 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:24,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:24,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1210456538, now seen corresponding path program 3 times [2025-02-06 04:34:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:24,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444133781] [2025-02-06 04:34:24,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:34:24,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:24,938 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 3 equivalence classes. [2025-02-06 04:34:24,946 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 30 statements. [2025-02-06 04:34:24,947 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:34:24,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:25,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444133781] [2025-02-06 04:34:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444133781] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:25,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:25,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123800638] [2025-02-06 04:34:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:25,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:25,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:25,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:25,184 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:25,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 144 transitions, 2266 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:25,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:25,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:25,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:27,715 INFO L124 PetriNetUnfolderBase]: 15605/23184 cut-off events. [2025-02-06 04:34:27,715 INFO L125 PetriNetUnfolderBase]: For 189259/189259 co-relation queries the response was YES. [2025-02-06 04:34:27,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102888 conditions, 23184 events. 15605/23184 cut-off events. For 189259/189259 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 150326 event pairs, 2825 based on Foata normal form. 13/23197 useless extension candidates. Maximal degree in co-relation 102836. Up to 14378 conditions per place. [2025-02-06 04:34:27,988 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 261 selfloop transitions, 33 changer transitions 1/296 dead transitions. [2025-02-06 04:34:27,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 296 transitions, 4758 flow [2025-02-06 04:34:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2025-02-06 04:34:27,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2025-02-06 04:34:27,990 INFO L175 Difference]: Start difference. First operand has 124 places, 144 transitions, 2266 flow. Second operand 7 states and 129 transitions. [2025-02-06 04:34:27,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 296 transitions, 4758 flow [2025-02-06 04:34:28,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 296 transitions, 4698 flow, removed 20 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:28,597 INFO L231 Difference]: Finished difference. Result has 134 places, 161 transitions, 2662 flow [2025-02-06 04:34:28,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2662, PETRI_PLACES=134, PETRI_TRANSITIONS=161} [2025-02-06 04:34:28,598 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 99 predicate places. [2025-02-06 04:34:28,598 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 161 transitions, 2662 flow [2025-02-06 04:34:28,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:28,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:28,598 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:28,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 04:34:28,598 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:28,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash -969353786, now seen corresponding path program 4 times [2025-02-06 04:34:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:28,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948760775] [2025-02-06 04:34:28,599 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:34:28,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:28,611 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-06 04:34:28,617 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:34:28,617 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:34:28,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:28,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:28,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948760775] [2025-02-06 04:34:28,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948760775] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:28,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:28,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:34:28,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748041409] [2025-02-06 04:34:28,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:28,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:34:28,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:28,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:34:28,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:34:28,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:28,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 161 transitions, 2662 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:28,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:28,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:28,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:31,907 INFO L124 PetriNetUnfolderBase]: 15584/23147 cut-off events. [2025-02-06 04:34:31,908 INFO L125 PetriNetUnfolderBase]: For 216088/216088 co-relation queries the response was YES. [2025-02-06 04:34:32,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106679 conditions, 23147 events. 15584/23147 cut-off events. For 216088/216088 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 149037 event pairs, 4808 based on Foata normal form. 13/23160 useless extension candidates. Maximal degree in co-relation 106622. Up to 7854 conditions per place. [2025-02-06 04:34:32,164 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 237 selfloop transitions, 46 changer transitions 1/285 dead transitions. [2025-02-06 04:34:32,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 285 transitions, 4552 flow [2025-02-06 04:34:32,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2025-02-06 04:34:32,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5436507936507936 [2025-02-06 04:34:32,165 INFO L175 Difference]: Start difference. First operand has 134 places, 161 transitions, 2662 flow. Second operand 7 states and 137 transitions. [2025-02-06 04:34:32,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 285 transitions, 4552 flow [2025-02-06 04:34:32,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 285 transitions, 4509 flow, removed 15 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:32,779 INFO L231 Difference]: Finished difference. Result has 143 places, 172 transitions, 3023 flow [2025-02-06 04:34:32,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2622, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3023, PETRI_PLACES=143, PETRI_TRANSITIONS=172} [2025-02-06 04:34:32,779 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 108 predicate places. [2025-02-06 04:34:32,779 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 172 transitions, 3023 flow [2025-02-06 04:34:32,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:32,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:32,780 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:32,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 04:34:32,780 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:32,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2106797460, now seen corresponding path program 5 times [2025-02-06 04:34:32,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:32,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434774889] [2025-02-06 04:34:32,780 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:34:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:32,787 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 3 equivalence classes. [2025-02-06 04:34:32,804 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:34:32,805 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 04:34:32,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:33,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:33,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434774889] [2025-02-06 04:34:33,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434774889] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:34:33,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633776646] [2025-02-06 04:34:33,068 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:34:33,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:33,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:34:33,070 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:34:33,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:34:33,136 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 3 equivalence classes. [2025-02-06 04:34:33,162 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:34:33,162 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-06 04:34:33,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:33,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:34:33,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:34:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:33,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:34:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:33,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633776646] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:34:33,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:34:33,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 17 [2025-02-06 04:34:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202402659] [2025-02-06 04:34:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:33,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:34:33,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:33,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:34:33,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2025-02-06 04:34:33,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:33,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 172 transitions, 3023 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:33,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:33,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:33,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:36,286 INFO L124 PetriNetUnfolderBase]: 16054/23920 cut-off events. [2025-02-06 04:34:36,286 INFO L125 PetriNetUnfolderBase]: For 244325/244325 co-relation queries the response was YES. [2025-02-06 04:34:36,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111894 conditions, 23920 events. 16054/23920 cut-off events. For 244325/244325 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 155557 event pairs, 4516 based on Foata normal form. 26/23946 useless extension candidates. Maximal degree in co-relation 111833. Up to 8448 conditions per place. [2025-02-06 04:34:36,523 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 262 selfloop transitions, 59 changer transitions 1/323 dead transitions. [2025-02-06 04:34:36,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 323 transitions, 5422 flow [2025-02-06 04:34:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2025-02-06 04:34:36,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2025-02-06 04:34:36,524 INFO L175 Difference]: Start difference. First operand has 143 places, 172 transitions, 3023 flow. Second operand 7 states and 146 transitions. [2025-02-06 04:34:36,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 323 transitions, 5422 flow [2025-02-06 04:34:37,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 323 transitions, 5331 flow, removed 19 selfloop flow, removed 2 redundant places. [2025-02-06 04:34:37,437 INFO L231 Difference]: Finished difference. Result has 151 places, 188 transitions, 3490 flow [2025-02-06 04:34:37,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3490, PETRI_PLACES=151, PETRI_TRANSITIONS=188} [2025-02-06 04:34:37,437 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 116 predicate places. [2025-02-06 04:34:37,437 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 188 transitions, 3490 flow [2025-02-06 04:34:37,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:37,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:37,438 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:37,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:34:37,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:37,638 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:37,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:37,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1018311860, now seen corresponding path program 2 times [2025-02-06 04:34:37,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:37,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691800482] [2025-02-06 04:34:37,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:34:37,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:37,649 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-06 04:34:37,663 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:34:37,664 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:34:37,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:37,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:37,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691800482] [2025-02-06 04:34:37,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691800482] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:37,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:37,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:37,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234477972] [2025-02-06 04:34:37,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:37,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:37,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:37,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:37,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:37,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:37,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 188 transitions, 3490 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:37,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:37,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:37,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:41,523 INFO L124 PetriNetUnfolderBase]: 16482/24554 cut-off events. [2025-02-06 04:34:41,524 INFO L125 PetriNetUnfolderBase]: For 259897/259897 co-relation queries the response was YES. [2025-02-06 04:34:41,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116965 conditions, 24554 events. 16482/24554 cut-off events. For 259897/259897 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 159915 event pairs, 4917 based on Foata normal form. 12/24566 useless extension candidates. Maximal degree in co-relation 116900. Up to 9233 conditions per place. [2025-02-06 04:34:41,800 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 250 selfloop transitions, 72 changer transitions 1/324 dead transitions. [2025-02-06 04:34:41,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 324 transitions, 5694 flow [2025-02-06 04:34:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2025-02-06 04:34:41,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5753968253968254 [2025-02-06 04:34:41,801 INFO L175 Difference]: Start difference. First operand has 151 places, 188 transitions, 3490 flow. Second operand 7 states and 145 transitions. [2025-02-06 04:34:41,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 324 transitions, 5694 flow [2025-02-06 04:34:42,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 324 transitions, 5609 flow, removed 30 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:42,623 INFO L231 Difference]: Finished difference. Result has 159 places, 199 transitions, 3851 flow [2025-02-06 04:34:42,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3438, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3851, PETRI_PLACES=159, PETRI_TRANSITIONS=199} [2025-02-06 04:34:42,624 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 124 predicate places. [2025-02-06 04:34:42,624 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 199 transitions, 3851 flow [2025-02-06 04:34:42,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:42,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:42,624 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:42,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 04:34:42,624 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:42,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:42,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1879779574, now seen corresponding path program 6 times [2025-02-06 04:34:42,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:42,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964534893] [2025-02-06 04:34:42,625 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:34:42,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:42,631 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 3 equivalence classes. [2025-02-06 04:34:42,643 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:34:42,643 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 04:34:42,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:42,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964534893] [2025-02-06 04:34:42,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964534893] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:42,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:42,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:42,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625077869] [2025-02-06 04:34:42,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:42,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:42,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:42,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:42,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:42,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:42,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 199 transitions, 3851 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:42,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:42,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:42,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:46,629 INFO L124 PetriNetUnfolderBase]: 16456/24528 cut-off events. [2025-02-06 04:34:46,630 INFO L125 PetriNetUnfolderBase]: For 281321/281321 co-relation queries the response was YES. [2025-02-06 04:34:46,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118290 conditions, 24528 events. 16456/24528 cut-off events. For 281321/281321 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 160290 event pairs, 4796 based on Foata normal form. 26/24554 useless extension candidates. Maximal degree in co-relation 118222. Up to 8448 conditions per place. [2025-02-06 04:34:46,891 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 253 selfloop transitions, 75 changer transitions 1/330 dead transitions. [2025-02-06 04:34:46,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 330 transitions, 5922 flow [2025-02-06 04:34:46,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2025-02-06 04:34:46,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-06 04:34:46,892 INFO L175 Difference]: Start difference. First operand has 159 places, 199 transitions, 3851 flow. Second operand 7 states and 147 transitions. [2025-02-06 04:34:46,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 330 transitions, 5922 flow [2025-02-06 04:34:47,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 330 transitions, 5809 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-02-06 04:34:47,835 INFO L231 Difference]: Finished difference. Result has 166 places, 204 transitions, 4070 flow [2025-02-06 04:34:47,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4070, PETRI_PLACES=166, PETRI_TRANSITIONS=204} [2025-02-06 04:34:47,836 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 131 predicate places. [2025-02-06 04:34:47,836 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 204 transitions, 4070 flow [2025-02-06 04:34:47,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:47,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:47,836 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:47,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 04:34:47,836 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:47,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:47,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1844259226, now seen corresponding path program 3 times [2025-02-06 04:34:47,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:47,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349435020] [2025-02-06 04:34:47,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:34:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:47,843 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 3 equivalence classes. [2025-02-06 04:34:47,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 30 statements. [2025-02-06 04:34:47,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:34:47,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:34:48,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:48,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349435020] [2025-02-06 04:34:48,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349435020] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:48,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:48,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:34:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588870489] [2025-02-06 04:34:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:48,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:48,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:48,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:48,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:48,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-02-06 04:34:48,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 204 transitions, 4070 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:48,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:48,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-02-06 04:34:48,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:51,815 INFO L124 PetriNetUnfolderBase]: 16968/25301 cut-off events. [2025-02-06 04:34:51,815 INFO L125 PetriNetUnfolderBase]: For 305926/305926 co-relation queries the response was YES. [2025-02-06 04:34:52,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123342 conditions, 25301 events. 16968/25301 cut-off events. For 305926/305926 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 166142 event pairs, 6044 based on Foata normal form. 12/25313 useless extension candidates. Maximal degree in co-relation 123271. Up to 14737 conditions per place. [2025-02-06 04:34:52,168 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 237 selfloop transitions, 83 changer transitions 1/322 dead transitions. [2025-02-06 04:34:52,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 322 transitions, 5983 flow [2025-02-06 04:34:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:52,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2025-02-06 04:34:52,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-02-06 04:34:52,169 INFO L175 Difference]: Start difference. First operand has 166 places, 204 transitions, 4070 flow. Second operand 7 states and 144 transitions. [2025-02-06 04:34:52,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 322 transitions, 5983 flow