./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-trans.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-nzb-file-trans.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 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:34:17,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:34:17,423 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:34:17,428 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:34:17,429 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:34:17,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:34:17,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:34:17,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:34:17,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:34:17,450 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:34:17,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:34:17,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:34:17,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:34:17,450 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:34:17,450 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:34:17,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:34:17,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:34:17,451 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:34:17,452 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:34:17,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:34:17,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:34:17,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:34:17,453 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 -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2025-02-06 04:34:17,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:34:17,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:34:17,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:34:17,664 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:34:17,664 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:34:17,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-02-06 04:34:18,845 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d5ed0a98b/c6d74e94eb7646d8aa5f4b5b48fafb8f/FLAG765999ffc [2025-02-06 04:34:19,108 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:34:19,109 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-02-06 04:34:19,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d5ed0a98b/c6d74e94eb7646d8aa5f4b5b48fafb8f/FLAG765999ffc [2025-02-06 04:34:19,432 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d5ed0a98b/c6d74e94eb7646d8aa5f4b5b48fafb8f [2025-02-06 04:34:19,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:34:19,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:34:19,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:34:19,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:34:19,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:34:19,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402ab870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19, skipping insertion in model container [2025-02-06 04:34:19,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:34:19,617 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-nzb-file-trans.wvr.c[6489,6502] [2025-02-06 04:34:19,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:34:19,637 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:34:19,683 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-nzb-file-trans.wvr.c[6489,6502] [2025-02-06 04:34:19,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:34:19,703 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:34:19,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19 WrapperNode [2025-02-06 04:34:19,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:34:19,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:34:19,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:34:19,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:34:19,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,755 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 591 [2025-02-06 04:34:19,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:34:19,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:34:19,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:34:19,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:34:19,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,786 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-06 04:34:19,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,804 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,809 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:34:19,819 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:34:19,819 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:34:19,819 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:34:19,823 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (1/1) ... [2025-02-06 04:34:19,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:34:19,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:34:19,852 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 04:34:19,862 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 04:34:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:34:19,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:34:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:34:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:34:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:34:19,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:34:19,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:34:19,884 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 04:34:19,983 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:34:19,984 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:34:20,605 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:34:20,606 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:34:21,168 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:34:21,168 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:34:21,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:34:21 BoogieIcfgContainer [2025-02-06 04:34:21,169 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:34:21,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:34:21,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:34:21,173 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:34:21,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:34:19" (1/3) ... [2025-02-06 04:34:21,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a680a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:34:21, skipping insertion in model container [2025-02-06 04:34:21,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:34:19" (2/3) ... [2025-02-06 04:34:21,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a680a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:34:21, skipping insertion in model container [2025-02-06 04:34:21,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:34:21" (3/3) ... [2025-02-06 04:34:21,175 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2025-02-06 04:34:21,186 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:34:21,187 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-nzb-file-trans.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-06 04:34:21,187 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:34:21,269 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:34:21,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2025-02-06 04:34:21,340 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2025-02-06 04:34:21,341 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:34:21,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-02-06 04:34:21,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2025-02-06 04:34:21,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2025-02-06 04:34:21,351 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:34:21,358 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;@12772572, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:34:21,358 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:34:21,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:34:21,375 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2025-02-06 04:34:21,375 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:34:21,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:21,376 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:21,376 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 04:34:21,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:21,380 INFO L85 PathProgramCache]: Analyzing trace with hash 654225432, now seen corresponding path program 1 times [2025-02-06 04:34:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:21,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805038670] [2025-02-06 04:34:21,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:21,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:34:21,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:34:21,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:21,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:21,734 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 04:34:21,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:21,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805038670] [2025-02-06 04:34:21,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805038670] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:21,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:21,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:34:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608476499] [2025-02-06 04:34:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:21,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:34:21,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:21,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:34:21,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:34:21,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:21,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 04:34:21,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:21,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:21,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:22,395 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2025-02-06 04:34:22,395 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2025-02-06 04:34:22,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12259 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2025-02-06 04:34:22,411 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2025-02-06 04:34:22,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2025-02-06 04:34:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:34:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:34:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2025-02-06 04:34:22,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2025-02-06 04:34:22,420 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2025-02-06 04:34:22,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2025-02-06 04:34:22,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:34:22,433 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2025-02-06 04:34:22,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2025-02-06 04:34:22,441 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2025-02-06 04:34:22,441 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2025-02-06 04:34:22,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 04:34:22,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:22,442 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:22,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:34:22,442 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 04:34:22,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash 671603589, now seen corresponding path program 1 times [2025-02-06 04:34:22,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:22,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275914746] [2025-02-06 04:34:22,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:22,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:22,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:34:22,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:34:22,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:22,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:34:22,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275914746] [2025-02-06 04:34:22,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275914746] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:34:22,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948790796] [2025-02-06 04:34:22,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:22,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:22,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:34:22,769 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 04:34:22,770 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 04:34:22,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:34:22,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:34:22,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:22,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:22,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 04:34:22,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:34:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:34:22,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:34:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:34:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948790796] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:34:22,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:34:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-06 04:34:22,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737584689] [2025-02-06 04:34:22,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:34:22,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:34:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:22,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:34:22,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:34:22,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:22,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:22,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:22,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:22,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:23,494 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2025-02-06 04:34:23,495 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-02-06 04:34:23,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12273 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2025-02-06 04:34:23,509 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2025-02-06 04:34:23,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2025-02-06 04:34:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:34:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:34:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-02-06 04:34:23,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2025-02-06 04:34:23,511 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2025-02-06 04:34:23,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2025-02-06 04:34:23,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:23,513 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2025-02-06 04:34:23,513 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2025-02-06 04:34:23,513 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2025-02-06 04:34:23,513 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2025-02-06 04:34:23,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:23,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:23,514 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 04:34:23,521 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 04:34:23,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:23,715 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 04:34:23,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1245307706, now seen corresponding path program 2 times [2025-02-06 04:34:23,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:23,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865400446] [2025-02-06 04:34:23,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:34:23,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:23,752 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-06 04:34:23,781 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-02-06 04:34:23,781 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:34:23,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-06 04:34:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:24,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865400446] [2025-02-06 04:34:24,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865400446] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:24,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:34:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691204896] [2025-02-06 04:34:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:24,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:34:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:24,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:34:24,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:34:24,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:24,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:24,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:24,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:24,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:25,320 INFO L124 PetriNetUnfolderBase]: 4763/6629 cut-off events. [2025-02-06 04:34:25,321 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2025-02-06 04:34:25,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13422 conditions, 6629 events. 4763/6629 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31497 event pairs, 1422 based on Foata normal form. 1/5337 useless extension candidates. Maximal degree in co-relation 13334. Up to 2905 conditions per place. [2025-02-06 04:34:25,344 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 107 selfloop transitions, 14 changer transitions 1/123 dead transitions. [2025-02-06 04:34:25,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 123 transitions, 606 flow [2025-02-06 04:34:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:34:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:34:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-02-06 04:34:25,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-02-06 04:34:25,345 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 131 transitions. [2025-02-06 04:34:25,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 123 transitions, 606 flow [2025-02-06 04:34:25,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 123 transitions, 582 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:25,352 INFO L231 Difference]: Finished difference. Result has 54 places, 68 transitions, 294 flow [2025-02-06 04:34:25,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=54, PETRI_TRANSITIONS=68} [2025-02-06 04:34:25,352 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2025-02-06 04:34:25,352 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 68 transitions, 294 flow [2025-02-06 04:34:25,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:25,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:25,353 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 04:34:25,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:34:25,353 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 04:34:25,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:25,353 INFO L85 PathProgramCache]: Analyzing trace with hash 407664732, now seen corresponding path program 3 times [2025-02-06 04:34:25,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:25,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463826958] [2025-02-06 04:34:25,357 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:34:25,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:25,384 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 3 equivalence classes. [2025-02-06 04:34:25,405 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-02-06 04:34:25,405 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:34:25,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-06 04:34:26,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:26,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463826958] [2025-02-06 04:34:26,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463826958] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:26,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:26,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:34:26,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800046150] [2025-02-06 04:34:26,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:26,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:34:26,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:26,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:34:26,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:34:26,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:26,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 68 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:26,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:26,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:26,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:28,129 INFO L124 PetriNetUnfolderBase]: 9600/13483 cut-off events. [2025-02-06 04:34:28,129 INFO L125 PetriNetUnfolderBase]: For 4589/4589 co-relation queries the response was YES. [2025-02-06 04:34:28,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32672 conditions, 13483 events. 9600/13483 cut-off events. For 4589/4589 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 71662 event pairs, 2274 based on Foata normal form. 1/12482 useless extension candidates. Maximal degree in co-relation 32592. Up to 5614 conditions per place. [2025-02-06 04:34:28,196 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 158 selfloop transitions, 35 changer transitions 1/195 dead transitions. [2025-02-06 04:34:28,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 195 transitions, 1087 flow [2025-02-06 04:34:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2025-02-06 04:34:28,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5451895043731778 [2025-02-06 04:34:28,200 INFO L175 Difference]: Start difference. First operand has 54 places, 68 transitions, 294 flow. Second operand 7 states and 187 transitions. [2025-02-06 04:34:28,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 195 transitions, 1087 flow [2025-02-06 04:34:28,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 195 transitions, 1087 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:34:28,225 INFO L231 Difference]: Finished difference. Result has 65 places, 100 transitions, 601 flow [2025-02-06 04:34:28,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=601, PETRI_PLACES=65, PETRI_TRANSITIONS=100} [2025-02-06 04:34:28,227 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2025-02-06 04:34:28,228 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 100 transitions, 601 flow [2025-02-06 04:34:28,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:28,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:28,228 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 04:34:28,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:34:28,229 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 04:34:28,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash 382692966, now seen corresponding path program 4 times [2025-02-06 04:34:28,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:28,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681308840] [2025-02-06 04:34:28,230 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:34:28,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:28,245 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-02-06 04:34:28,258 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:34:28,258 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:34:28,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-06 04:34:28,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:28,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681308840] [2025-02-06 04:34:28,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681308840] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:34:28,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478136868] [2025-02-06 04:34:28,407 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:34:28,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:28,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:34:28,409 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 04:34:28,418 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 04:34:28,528 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-02-06 04:34:28,562 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:34:28,563 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:34:28,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:28,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:34:28,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:34:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-06 04:34:28,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:34:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-06 04:34:28,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478136868] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:34:28,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:34:28,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-02-06 04:34:28,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016896214] [2025-02-06 04:34:28,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:34:28,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 04:34:28,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:28,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 04:34:28,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2025-02-06 04:34:28,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:28,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 100 transitions, 601 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 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 04:34:28,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:28,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:28,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:29,982 INFO L124 PetriNetUnfolderBase]: 9600/13486 cut-off events. [2025-02-06 04:34:29,982 INFO L125 PetriNetUnfolderBase]: For 16068/16068 co-relation queries the response was YES. [2025-02-06 04:34:30,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38905 conditions, 13486 events. 9600/13486 cut-off events. For 16068/16068 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 70990 event pairs, 6520 based on Foata normal form. 1/13388 useless extension candidates. Maximal degree in co-relation 38808. Up to 13464 conditions per place. [2025-02-06 04:34:30,039 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 84 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2025-02-06 04:34:30,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 823 flow [2025-02-06 04:34:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:34:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:34:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-02-06 04:34:30,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2025-02-06 04:34:30,041 INFO L175 Difference]: Start difference. First operand has 65 places, 100 transitions, 601 flow. Second operand 7 states and 87 transitions. [2025-02-06 04:34:30,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 823 flow [2025-02-06 04:34:30,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 103 transitions, 811 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-02-06 04:34:30,195 INFO L231 Difference]: Finished difference. Result has 72 places, 103 transitions, 657 flow [2025-02-06 04:34:30,195 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=657, PETRI_PLACES=72, PETRI_TRANSITIONS=103} [2025-02-06 04:34:30,196 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2025-02-06 04:34:30,196 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 103 transitions, 657 flow [2025-02-06 04:34:30,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 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 04:34:30,196 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:30,196 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 04:34:30,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 04:34:30,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:34:30,397 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 04:34:30,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:30,398 INFO L85 PathProgramCache]: Analyzing trace with hash 292873019, now seen corresponding path program 5 times [2025-02-06 04:34:30,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:30,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486649882] [2025-02-06 04:34:30,398 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:34:30,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:30,421 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-02-06 04:34:30,477 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:34:30,481 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-06 04:34:30,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:31,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:31,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486649882] [2025-02-06 04:34:31,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486649882] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:31,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:31,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:34:31,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903037933] [2025-02-06 04:34:31,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:31,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:34:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:31,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:34:31,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:34:31,046 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:31,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 103 transitions, 657 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:31,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:31,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:31,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:33,290 INFO L124 PetriNetUnfolderBase]: 12367/17476 cut-off events. [2025-02-06 04:34:33,291 INFO L125 PetriNetUnfolderBase]: For 17887/17887 co-relation queries the response was YES. [2025-02-06 04:34:33,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48997 conditions, 17476 events. 12367/17476 cut-off events. For 17887/17887 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 96492 event pairs, 3151 based on Foata normal form. 1/17380 useless extension candidates. Maximal degree in co-relation 48879. Up to 6255 conditions per place. [2025-02-06 04:34:33,366 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 147 selfloop transitions, 46 changer transitions 4/198 dead transitions. [2025-02-06 04:34:33,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 198 transitions, 1465 flow [2025-02-06 04:34:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:34:33,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:34:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2025-02-06 04:34:33,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5877551020408164 [2025-02-06 04:34:33,368 INFO L175 Difference]: Start difference. First operand has 72 places, 103 transitions, 657 flow. Second operand 5 states and 144 transitions. [2025-02-06 04:34:33,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 198 transitions, 1465 flow [2025-02-06 04:34:33,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 198 transitions, 1429 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-02-06 04:34:33,484 INFO L231 Difference]: Finished difference. Result has 76 places, 123 transitions, 981 flow [2025-02-06 04:34:33,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=981, PETRI_PLACES=76, PETRI_TRANSITIONS=123} [2025-02-06 04:34:33,485 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2025-02-06 04:34:33,485 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 123 transitions, 981 flow [2025-02-06 04:34:33,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:33,485 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:33,485 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 04:34:33,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:34:33,485 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 04:34:33,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash 192323227, now seen corresponding path program 6 times [2025-02-06 04:34:33,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:33,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021319147] [2025-02-06 04:34:33,486 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:34:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:33,502 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-02-06 04:34:33,509 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-02-06 04:34:33,510 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:34:33,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:33,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:33,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021319147] [2025-02-06 04:34:33,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021319147] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:33,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:33,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:34:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237043945] [2025-02-06 04:34:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:33,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:34:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:33,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:34:33,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:34:33,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:33,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 123 transitions, 981 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:33,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:33,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:33,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:35,536 INFO L124 PetriNetUnfolderBase]: 12306/17367 cut-off events. [2025-02-06 04:34:35,537 INFO L125 PetriNetUnfolderBase]: For 35526/35526 co-relation queries the response was YES. [2025-02-06 04:34:35,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54149 conditions, 17367 events. 12306/17367 cut-off events. For 35526/35526 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 95648 event pairs, 6653 based on Foata normal form. 1/17368 useless extension candidates. Maximal degree in co-relation 54045. Up to 12595 conditions per place. [2025-02-06 04:34:35,680 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 155 selfloop transitions, 25 changer transitions 2/183 dead transitions. [2025-02-06 04:34:35,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 183 transitions, 1591 flow [2025-02-06 04:34:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:34:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:34:35,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2025-02-06 04:34:35,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2025-02-06 04:34:35,683 INFO L175 Difference]: Start difference. First operand has 76 places, 123 transitions, 981 flow. Second operand 5 states and 127 transitions. [2025-02-06 04:34:35,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 183 transitions, 1591 flow [2025-02-06 04:34:35,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 183 transitions, 1575 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-02-06 04:34:35,945 INFO L231 Difference]: Finished difference. Result has 83 places, 131 transitions, 1162 flow [2025-02-06 04:34:35,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1162, PETRI_PLACES=83, PETRI_TRANSITIONS=131} [2025-02-06 04:34:35,946 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2025-02-06 04:34:35,946 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 131 transitions, 1162 flow [2025-02-06 04:34:35,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:35,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:35,946 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 04:34:35,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:34:35,947 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:34:35,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash -168228379, now seen corresponding path program 7 times [2025-02-06 04:34:35,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:35,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756320413] [2025-02-06 04:34:35,948 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:34:35,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:35,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 04:34:35,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:34:35,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:35,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:36,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756320413] [2025-02-06 04:34:36,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756320413] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:36,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:36,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:34:36,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792315654] [2025-02-06 04:34:36,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:36,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:34:36,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:36,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:34:36,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:34:36,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:36,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 131 transitions, 1162 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:36,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:36,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:36,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:39,651 INFO L124 PetriNetUnfolderBase]: 13907/19654 cut-off events. [2025-02-06 04:34:39,652 INFO L125 PetriNetUnfolderBase]: For 49443/49443 co-relation queries the response was YES. [2025-02-06 04:34:39,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62497 conditions, 19654 events. 13907/19654 cut-off events. For 49443/49443 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 112649 event pairs, 4039 based on Foata normal form. 1/19655 useless extension candidates. Maximal degree in co-relation 62389. Up to 8366 conditions per place. [2025-02-06 04:34:39,733 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 171 selfloop transitions, 60 changer transitions 1/233 dead transitions. [2025-02-06 04:34:39,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 233 transitions, 2167 flow [2025-02-06 04:34:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:34:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:34:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2025-02-06 04:34:39,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2025-02-06 04:34:39,735 INFO L175 Difference]: Start difference. First operand has 83 places, 131 transitions, 1162 flow. Second operand 5 states and 148 transitions. [2025-02-06 04:34:39,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 233 transitions, 2167 flow [2025-02-06 04:34:39,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 233 transitions, 2091 flow, removed 38 selfloop flow, removed 0 redundant places. [2025-02-06 04:34:39,992 INFO L231 Difference]: Finished difference. Result has 90 places, 155 transitions, 1576 flow [2025-02-06 04:34:39,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1576, PETRI_PLACES=90, PETRI_TRANSITIONS=155} [2025-02-06 04:34:39,993 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2025-02-06 04:34:39,993 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 155 transitions, 1576 flow [2025-02-06 04:34:39,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:39,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:39,993 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 04:34:39,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:34:39,993 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 04:34:39,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash -520239365, now seen corresponding path program 8 times [2025-02-06 04:34:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:39,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66739544] [2025-02-06 04:34:39,994 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:34:39,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:40,007 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-06 04:34:40,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-02-06 04:34:40,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:34:40,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:40,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:40,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66739544] [2025-02-06 04:34:40,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66739544] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:40,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:40,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:34:40,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887863629] [2025-02-06 04:34:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:40,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:34:40,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:40,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:34:40,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:34:40,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:40,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 155 transitions, 1576 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:40,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:40,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:40,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:42,624 INFO L124 PetriNetUnfolderBase]: 14625/20705 cut-off events. [2025-02-06 04:34:42,625 INFO L125 PetriNetUnfolderBase]: For 65362/65362 co-relation queries the response was YES. [2025-02-06 04:34:42,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69407 conditions, 20705 events. 14625/20705 cut-off events. For 65362/65362 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 119488 event pairs, 3258 based on Foata normal form. 1/20706 useless extension candidates. Maximal degree in co-relation 69295. Up to 7338 conditions per place. [2025-02-06 04:34:42,743 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 178 selfloop transitions, 88 changer transitions 2/269 dead transitions. [2025-02-06 04:34:42,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 269 transitions, 2667 flow [2025-02-06 04:34:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:34:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:34:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2025-02-06 04:34:42,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2025-02-06 04:34:42,745 INFO L175 Difference]: Start difference. First operand has 90 places, 155 transitions, 1576 flow. Second operand 6 states and 180 transitions. [2025-02-06 04:34:42,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 269 transitions, 2667 flow [2025-02-06 04:34:43,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 269 transitions, 2628 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:34:43,013 INFO L231 Difference]: Finished difference. Result has 98 places, 182 transitions, 2193 flow [2025-02-06 04:34:43,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2193, PETRI_PLACES=98, PETRI_TRANSITIONS=182} [2025-02-06 04:34:43,013 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2025-02-06 04:34:43,014 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 182 transitions, 2193 flow [2025-02-06 04:34:43,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 04:34:43,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:43,014 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:43,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:34:43,014 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 04:34:43,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:43,015 INFO L85 PathProgramCache]: Analyzing trace with hash -27483939, now seen corresponding path program 1 times [2025-02-06 04:34:43,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:43,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454590330] [2025-02-06 04:34:43,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:43,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 04:34:43,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 04:34:43,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:43,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:43,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:43,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454590330] [2025-02-06 04:34:43,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454590330] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:43,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:43,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:34:43,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213694624] [2025-02-06 04:34:43,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:43,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:34:43,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:43,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:34:43,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:34:43,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:43,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 182 transitions, 2193 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:43,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:43,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:43,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:45,303 INFO L124 PetriNetUnfolderBase]: 15034/21321 cut-off events. [2025-02-06 04:34:45,304 INFO L125 PetriNetUnfolderBase]: For 98373/98373 co-relation queries the response was YES. [2025-02-06 04:34:45,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76430 conditions, 21321 events. 15034/21321 cut-off events. For 98373/98373 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 123322 event pairs, 5321 based on Foata normal form. 3/21324 useless extension candidates. Maximal degree in co-relation 76315. Up to 16628 conditions per place. [2025-02-06 04:34:45,451 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 184 selfloop transitions, 12 changer transitions 47/244 dead transitions. [2025-02-06 04:34:45,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 244 transitions, 3155 flow [2025-02-06 04:34:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:34:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:34:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2025-02-06 04:34:45,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2025-02-06 04:34:45,453 INFO L175 Difference]: Start difference. First operand has 98 places, 182 transitions, 2193 flow. Second operand 4 states and 103 transitions. [2025-02-06 04:34:45,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 244 transitions, 3155 flow [2025-02-06 04:34:45,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 244 transitions, 3125 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-02-06 04:34:45,870 INFO L231 Difference]: Finished difference. Result has 104 places, 166 transitions, 2001 flow [2025-02-06 04:34:45,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2167, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2001, PETRI_PLACES=104, PETRI_TRANSITIONS=166} [2025-02-06 04:34:45,871 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2025-02-06 04:34:45,871 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 166 transitions, 2001 flow [2025-02-06 04:34:45,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:45,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:45,871 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:45,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:34:45,871 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 04:34:45,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1756369036, now seen corresponding path program 1 times [2025-02-06 04:34:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:45,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452228633] [2025-02-06 04:34:45,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:45,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:45,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 04:34:45,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 04:34:45,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:45,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:45,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:45,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452228633] [2025-02-06 04:34:45,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452228633] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:45,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:45,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:34:45,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074798286] [2025-02-06 04:34:45,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:45,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:34:45,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:45,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:34:45,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:34:45,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:45,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 166 transitions, 2001 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:45,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:45,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:45,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:48,050 INFO L124 PetriNetUnfolderBase]: 14520/20742 cut-off events. [2025-02-06 04:34:48,050 INFO L125 PetriNetUnfolderBase]: For 90229/90229 co-relation queries the response was YES. [2025-02-06 04:34:48,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72773 conditions, 20742 events. 14520/20742 cut-off events. For 90229/90229 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 120766 event pairs, 4493 based on Foata normal form. 4/20746 useless extension candidates. Maximal degree in co-relation 72655. Up to 16026 conditions per place. [2025-02-06 04:34:48,170 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 161 selfloop transitions, 14 changer transitions 50/226 dead transitions. [2025-02-06 04:34:48,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 226 transitions, 2939 flow [2025-02-06 04:34:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:34:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:34:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-02-06 04:34:48,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2025-02-06 04:34:48,171 INFO L175 Difference]: Start difference. First operand has 104 places, 166 transitions, 2001 flow. Second operand 4 states and 101 transitions. [2025-02-06 04:34:48,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 226 transitions, 2939 flow [2025-02-06 04:34:48,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 226 transitions, 2895 flow, removed 10 selfloop flow, removed 3 redundant places. [2025-02-06 04:34:48,502 INFO L231 Difference]: Finished difference. Result has 106 places, 151 transitions, 1861 flow [2025-02-06 04:34:48,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1861, PETRI_PLACES=106, PETRI_TRANSITIONS=151} [2025-02-06 04:34:48,503 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2025-02-06 04:34:48,503 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 151 transitions, 1861 flow [2025-02-06 04:34:48,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:48,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:48,503 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:48,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 04:34:48,503 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 04:34:48,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash 947627020, now seen corresponding path program 1 times [2025-02-06 04:34:48,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:48,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17832365] [2025-02-06 04:34:48,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:48,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:48,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 04:34:48,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 04:34:48,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:48,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:48,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:48,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17832365] [2025-02-06 04:34:48,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17832365] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:48,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:48,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:34:48,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421892847] [2025-02-06 04:34:48,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:48,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:34:48,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:48,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:34:48,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:34:48,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:48,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 151 transitions, 1861 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:48,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:48,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:48,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:50,621 INFO L124 PetriNetUnfolderBase]: 13580/19483 cut-off events. [2025-02-06 04:34:50,621 INFO L125 PetriNetUnfolderBase]: For 84111/84111 co-relation queries the response was YES. [2025-02-06 04:34:50,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67761 conditions, 19483 events. 13580/19483 cut-off events. For 84111/84111 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 113618 event pairs, 3769 based on Foata normal form. 5/19488 useless extension candidates. Maximal degree in co-relation 67655. Up to 15434 conditions per place. [2025-02-06 04:34:50,796 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 162 selfloop transitions, 14 changer transitions 30/207 dead transitions. [2025-02-06 04:34:50,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 207 transitions, 2686 flow [2025-02-06 04:34:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:34:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:34:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-02-06 04:34:50,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2025-02-06 04:34:50,798 INFO L175 Difference]: Start difference. First operand has 106 places, 151 transitions, 1861 flow. Second operand 4 states and 99 transitions. [2025-02-06 04:34:50,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 207 transitions, 2686 flow [2025-02-06 04:34:51,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 207 transitions, 2649 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-02-06 04:34:51,087 INFO L231 Difference]: Finished difference. Result has 105 places, 154 transitions, 1954 flow [2025-02-06 04:34:51,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1954, PETRI_PLACES=105, PETRI_TRANSITIONS=154} [2025-02-06 04:34:51,088 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2025-02-06 04:34:51,089 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 154 transitions, 1954 flow [2025-02-06 04:34:51,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:51,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:51,089 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:51,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 04:34:51,089 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 04:34:51,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1085018088, now seen corresponding path program 2 times [2025-02-06 04:34:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:51,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981061750] [2025-02-06 04:34:51,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:34:51,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:51,104 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 04:34:51,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-02-06 04:34:51,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:34:51,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:51,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:51,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981061750] [2025-02-06 04:34:51,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981061750] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:51,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:51,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:34:51,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084841068] [2025-02-06 04:34:51,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:51,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:34:51,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:51,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:34:51,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:34:51,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:51,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 154 transitions, 1954 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:51,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:51,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:51,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:53,068 INFO L124 PetriNetUnfolderBase]: 12983/18695 cut-off events. [2025-02-06 04:34:53,068 INFO L125 PetriNetUnfolderBase]: For 81999/81999 co-relation queries the response was YES. [2025-02-06 04:34:53,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65449 conditions, 18695 events. 12983/18695 cut-off events. For 81999/81999 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 108700 event pairs, 7666 based on Foata normal form. 4/18699 useless extension candidates. Maximal degree in co-relation 65365. Up to 14944 conditions per place. [2025-02-06 04:34:53,170 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 147 selfloop transitions, 3 changer transitions 49/200 dead transitions. [2025-02-06 04:34:53,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 200 transitions, 2605 flow [2025-02-06 04:34:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:34:53,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:34:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-06 04:34:53,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-06 04:34:53,171 INFO L175 Difference]: Start difference. First operand has 105 places, 154 transitions, 1954 flow. Second operand 4 states and 98 transitions. [2025-02-06 04:34:53,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 200 transitions, 2605 flow [2025-02-06 04:34:53,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 200 transitions, 2537 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-06 04:34:53,393 INFO L231 Difference]: Finished difference. Result has 106 places, 133 transitions, 1526 flow [2025-02-06 04:34:53,393 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1526, PETRI_PLACES=106, PETRI_TRANSITIONS=133} [2025-02-06 04:34:53,393 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2025-02-06 04:34:53,393 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 133 transitions, 1526 flow [2025-02-06 04:34:53,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:53,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:53,394 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:53,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 04:34:53,394 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 04:34:53,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:53,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1562278536, now seen corresponding path program 2 times [2025-02-06 04:34:53,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:53,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181538492] [2025-02-06 04:34:53,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:34:53,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:53,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 04:34:53,411 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-02-06 04:34:53,411 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:34:53,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:53,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:53,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181538492] [2025-02-06 04:34:53,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181538492] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:53,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:53,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:34:53,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217473082] [2025-02-06 04:34:53,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:53,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:34:53,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:53,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:34:53,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:34:53,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:53,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 133 transitions, 1526 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:53,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:53,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:53,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:55,164 INFO L124 PetriNetUnfolderBase]: 11629/16697 cut-off events. [2025-02-06 04:34:55,164 INFO L125 PetriNetUnfolderBase]: For 61867/61867 co-relation queries the response was YES. [2025-02-06 04:34:55,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57068 conditions, 16697 events. 11629/16697 cut-off events. For 61867/61867 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 93783 event pairs, 7142 based on Foata normal form. 5/16702 useless extension candidates. Maximal degree in co-relation 56991. Up to 13897 conditions per place. [2025-02-06 04:34:55,265 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 130 selfloop transitions, 4 changer transitions 38/173 dead transitions. [2025-02-06 04:34:55,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 173 transitions, 2094 flow [2025-02-06 04:34:55,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:34:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:34:55,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-02-06 04:34:55,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2025-02-06 04:34:55,266 INFO L175 Difference]: Start difference. First operand has 106 places, 133 transitions, 1526 flow. Second operand 4 states and 94 transitions. [2025-02-06 04:34:55,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 173 transitions, 2094 flow [2025-02-06 04:34:55,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 173 transitions, 2011 flow, removed 18 selfloop flow, removed 7 redundant places. [2025-02-06 04:34:55,411 INFO L231 Difference]: Finished difference. Result has 100 places, 119 transitions, 1245 flow [2025-02-06 04:34:55,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1245, PETRI_PLACES=100, PETRI_TRANSITIONS=119} [2025-02-06 04:34:55,412 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2025-02-06 04:34:55,412 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 119 transitions, 1245 flow [2025-02-06 04:34:55,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:55,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:55,412 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:55,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 04:34:55,412 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 04:34:55,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:55,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1316623417, now seen corresponding path program 2 times [2025-02-06 04:34:55,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:55,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931791478] [2025-02-06 04:34:55,413 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:34:55,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:55,426 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 04:34:55,430 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-02-06 04:34:55,431 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:34:55,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:55,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931791478] [2025-02-06 04:34:55,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931791478] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:55,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:55,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:34:55,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768014503] [2025-02-06 04:34:55,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:55,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:34:55,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:55,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:34:55,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:34:55,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:55,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 119 transitions, 1245 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:55,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:55,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:55,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:56,927 INFO L124 PetriNetUnfolderBase]: 10078/14355 cut-off events. [2025-02-06 04:34:56,928 INFO L125 PetriNetUnfolderBase]: For 48503/48503 co-relation queries the response was YES. [2025-02-06 04:34:56,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48893 conditions, 14355 events. 10078/14355 cut-off events. For 48503/48503 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 76734 event pairs, 6205 based on Foata normal form. 4/14359 useless extension candidates. Maximal degree in co-relation 48859. Up to 12097 conditions per place. [2025-02-06 04:34:56,986 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 90 selfloop transitions, 0 changer transitions 58/149 dead transitions. [2025-02-06 04:34:56,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 149 transitions, 1651 flow [2025-02-06 04:34:56,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:34:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:34:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-02-06 04:34:56,987 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-02-06 04:34:56,988 INFO L175 Difference]: Start difference. First operand has 100 places, 119 transitions, 1245 flow. Second operand 4 states and 91 transitions. [2025-02-06 04:34:56,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 149 transitions, 1651 flow [2025-02-06 04:34:57,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 149 transitions, 1472 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-02-06 04:34:57,073 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 687 flow [2025-02-06 04:34:57,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=687, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2025-02-06 04:34:57,074 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2025-02-06 04:34:57,074 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 687 flow [2025-02-06 04:34:57,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 04:34:57,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:57,074 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:57,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 04:34:57,075 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 04:34:57,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash -230824085, now seen corresponding path program 1 times [2025-02-06 04:34:57,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:57,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179323918] [2025-02-06 04:34:57,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:57,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:57,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 04:34:57,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 04:34:57,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:57,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:34:57,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:57,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179323918] [2025-02-06 04:34:57,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179323918] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:57,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:57,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:34:57,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484016458] [2025-02-06 04:34:57,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:57,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:34:57,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:57,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:34:57,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:34:57,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:57,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 687 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:57,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:57,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:57,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:34:58,483 INFO L124 PetriNetUnfolderBase]: 10285/14526 cut-off events. [2025-02-06 04:34:58,483 INFO L125 PetriNetUnfolderBase]: For 29504/29504 co-relation queries the response was YES. [2025-02-06 04:34:58,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45241 conditions, 14526 events. 10285/14526 cut-off events. For 29504/29504 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 75862 event pairs, 6226 based on Foata normal form. 314/14840 useless extension candidates. Maximal degree in co-relation 45212. Up to 11347 conditions per place. [2025-02-06 04:34:58,591 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 111 selfloop transitions, 11 changer transitions 1/124 dead transitions. [2025-02-06 04:34:58,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 1124 flow [2025-02-06 04:34:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:34:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:34:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-02-06 04:34:58,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2025-02-06 04:34:58,593 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 687 flow. Second operand 3 states and 73 transitions. [2025-02-06 04:34:58,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 1124 flow [2025-02-06 04:34:58,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 124 transitions, 1009 flow, removed 23 selfloop flow, removed 8 redundant places. [2025-02-06 04:34:58,668 INFO L231 Difference]: Finished difference. Result has 79 places, 94 transitions, 658 flow [2025-02-06 04:34:58,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=79, PETRI_TRANSITIONS=94} [2025-02-06 04:34:58,668 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2025-02-06 04:34:58,668 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 94 transitions, 658 flow [2025-02-06 04:34:58,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:34:58,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:34:58,669 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:34:58,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 04:34:58,669 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 04:34:58,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:34:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2006019121, now seen corresponding path program 1 times [2025-02-06 04:34:58,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:34:58,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724203737] [2025-02-06 04:34:58,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:34:58,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:34:58,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-06 04:34:58,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 04:34:58,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:34:58,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:34:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:34:58,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:34:58,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724203737] [2025-02-06 04:34:58,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724203737] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:34:58,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:34:58,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:34:58,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775836860] [2025-02-06 04:34:58,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:34:58,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:34:58,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:34:58,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:34:58,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:34:58,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:34:58,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 94 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 04:34:58,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:34:58,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:34:58,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:35:00,381 INFO L124 PetriNetUnfolderBase]: 12416/17542 cut-off events. [2025-02-06 04:35:00,381 INFO L125 PetriNetUnfolderBase]: For 26745/26745 co-relation queries the response was YES. [2025-02-06 04:35:00,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51400 conditions, 17542 events. 12416/17542 cut-off events. For 26745/26745 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 93665 event pairs, 7201 based on Foata normal form. 366/17908 useless extension candidates. Maximal degree in co-relation 51376. Up to 13788 conditions per place. [2025-02-06 04:35:00,498 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 111 selfloop transitions, 9 changer transitions 1/122 dead transitions. [2025-02-06 04:35:00,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 1041 flow [2025-02-06 04:35:00,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:35:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:35:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-02-06 04:35:00,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2025-02-06 04:35:00,499 INFO L175 Difference]: Start difference. First operand has 79 places, 94 transitions, 658 flow. Second operand 3 states and 71 transitions. [2025-02-06 04:35:00,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 1041 flow [2025-02-06 04:35:00,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 1029 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:35:00,596 INFO L231 Difference]: Finished difference. Result has 81 places, 98 transitions, 726 flow [2025-02-06 04:35:00,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=726, PETRI_PLACES=81, PETRI_TRANSITIONS=98} [2025-02-06 04:35:00,597 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2025-02-06 04:35:00,597 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 98 transitions, 726 flow [2025-02-06 04:35:00,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 04:35:00,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:35:00,597 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:35:00,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 04:35:00,597 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 04:35:00,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:35:00,598 INFO L85 PathProgramCache]: Analyzing trace with hash -490967414, now seen corresponding path program 1 times [2025-02-06 04:35:00,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:35:00,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76512693] [2025-02-06 04:35:00,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:35:00,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:35:00,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-06 04:35:00,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 04:35:00,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:35:00,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:35:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-02-06 04:35:00,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:35:00,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76512693] [2025-02-06 04:35:00,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76512693] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:35:00,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:35:00,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:35:00,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604188762] [2025-02-06 04:35:00,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:35:00,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:35:00,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:35:00,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:35:00,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:35:00,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:35:00,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 98 transitions, 726 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:35:00,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:35:00,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:35:00,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:35:02,818 INFO L124 PetriNetUnfolderBase]: 16067/22717 cut-off events. [2025-02-06 04:35:02,818 INFO L125 PetriNetUnfolderBase]: For 38395/38395 co-relation queries the response was YES. [2025-02-06 04:35:02,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67490 conditions, 22717 events. 16067/22717 cut-off events. For 38395/38395 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 125488 event pairs, 9023 based on Foata normal form. 595/23312 useless extension candidates. Maximal degree in co-relation 67465. Up to 16842 conditions per place. [2025-02-06 04:35:02,992 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 128 selfloop transitions, 11 changer transitions 1/141 dead transitions. [2025-02-06 04:35:02,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 141 transitions, 1297 flow [2025-02-06 04:35:02,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:35:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:35:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-02-06 04:35:02,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2025-02-06 04:35:02,993 INFO L175 Difference]: Start difference. First operand has 81 places, 98 transitions, 726 flow. Second operand 3 states and 72 transitions. [2025-02-06 04:35:02,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 141 transitions, 1297 flow [2025-02-06 04:35:03,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 141 transitions, 1284 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:35:03,109 INFO L231 Difference]: Finished difference. Result has 83 places, 100 transitions, 769 flow [2025-02-06 04:35:03,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=769, PETRI_PLACES=83, PETRI_TRANSITIONS=100} [2025-02-06 04:35:03,110 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2025-02-06 04:35:03,110 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 100 transitions, 769 flow [2025-02-06 04:35:03,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:35:03,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:35:03,110 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:35:03,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 04:35:03,110 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 04:35:03,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:35:03,111 INFO L85 PathProgramCache]: Analyzing trace with hash 563604820, now seen corresponding path program 1 times [2025-02-06 04:35:03,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:35:03,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545646679] [2025-02-06 04:35:03,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:35:03,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:35:03,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 04:35:03,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 04:35:03,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:35:03,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:35:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:35:12,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:35:12,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545646679] [2025-02-06 04:35:12,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545646679] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:35:12,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442458089] [2025-02-06 04:35:12,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:35:12,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:35:12,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:35:12,924 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 04:35:12,926 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 04:35:13,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 04:35:13,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 04:35:13,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:35:13,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:35:13,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 04:35:13,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:35:14,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:35:14,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 205 treesize of output 241 [2025-02-06 04:35:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:35:15,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:35:16,705 INFO L349 Elim1Store]: treesize reduction 5, result has 95.8 percent of original size [2025-02-06 04:35:16,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 251 treesize of output 299 [2025-02-06 04:35:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:35:17,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442458089] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:35:17,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:35:17,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 9, 9] total 44 [2025-02-06 04:35:17,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720431380] [2025-02-06 04:35:17,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:35:17,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-06 04:35:17,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:35:17,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-06 04:35:17,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1755, Unknown=0, NotChecked=0, Total=1892 [2025-02-06 04:35:17,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-02-06 04:35:17,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 100 transitions, 769 flow. Second operand has 44 states, 44 states have (on average 6.840909090909091) internal successors, (301), 44 states have internal predecessors, (301), 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 04:35:17,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:35:17,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-02-06 04:35:17,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand