./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:29:46,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:29:46,366 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:29:46,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:29:46,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:29:46,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:29:46,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:29:46,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:29:46,384 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:29:46,384 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:29:46,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:29:46,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:29:46,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:29:46,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:29:46,385 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:29:46,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:29:46,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:29:46,386 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:29:46,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:29:46,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:29:46,387 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2025-03-08 17:29:46,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:29:46,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:29:46,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:29:46,617 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:29:46,617 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:29:46,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-03-08 17:29:47,785 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/492a42d78/3a7e47ab4b6549d4a585c342c20aa0db/FLAGa79e73c16 [2025-03-08 17:29:48,069 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:29:48,072 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-03-08 17:29:48,079 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/492a42d78/3a7e47ab4b6549d4a585c342c20aa0db/FLAGa79e73c16 [2025-03-08 17:29:48,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/492a42d78/3a7e47ab4b6549d4a585c342c20aa0db [2025-03-08 17:29:48,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:29:48,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:29:48,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:29:48,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:29:48,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:29:48,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40242edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48, skipping insertion in model container [2025-03-08 17:29:48,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:29:48,289 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2025-03-08 17:29:48,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:29:48,310 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:29:48,349 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2025-03-08 17:29:48,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:29:48,365 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:29:48,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48 WrapperNode [2025-03-08 17:29:48,367 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:29:48,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:29:48,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:29:48,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:29:48,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,428 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 591 [2025-03-08 17:29:48,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:29:48,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:29:48,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:29:48,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:29:48,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,471 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]. [2025-03-08 17:29:48,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,489 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:29:48,501 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:29:48,504 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:29:48,504 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:29:48,505 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (1/1) ... [2025-03-08 17:29:48,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:29:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:29:48,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 17:29:48,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 17:29:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:29:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-08 17:29:48,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-08 17:29:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-08 17:29:48,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-08 17:29:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-08 17:29:48,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-08 17:29:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:29:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 17:29:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 17:29:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 17:29:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 17:29:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:29:48,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:29:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 17:29:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 17:29:48,560 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:29:48,660 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:29:48,662 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:29:49,257 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:29:49,257 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:29:49,783 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:29:49,783 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:29:49,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:29:49 BoogieIcfgContainer [2025-03-08 17:29:49,783 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:29:49,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:29:49,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:29:49,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:29:49,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:29:48" (1/3) ... [2025-03-08 17:29:49,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158415cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:29:49, skipping insertion in model container [2025-03-08 17:29:49,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:29:48" (2/3) ... [2025-03-08 17:29:49,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158415cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:29:49, skipping insertion in model container [2025-03-08 17:29:49,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:29:49" (3/3) ... [2025-03-08 17:29:49,790 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2025-03-08 17:29:49,801 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:29:49,802 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. [2025-03-08 17:29:49,802 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:29:49,920 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-08 17:29:49,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2025-03-08 17:29:49,986 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2025-03-08 17:29:49,989 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-08 17:29:49,993 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. [2025-03-08 17:29:49,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2025-03-08 17:29:49,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2025-03-08 17:29:50,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:29:50,017 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;@6bc26d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:29:50,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-08 17:29:50,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:29:50,034 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2025-03-08 17:29:50,034 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-08 17:29:50,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:29:50,034 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] [2025-03-08 17:29:50,035 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)] === [2025-03-08 17:29:50,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:29:50,038 INFO L85 PathProgramCache]: Analyzing trace with hash 654225432, now seen corresponding path program 1 times [2025-03-08 17:29:50,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:29:50,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158338701] [2025-03-08 17:29:50,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:29:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:29:50,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:29:50,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:29:50,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:29:50,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:29:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:29:50,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:29:50,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158338701] [2025-03-08 17:29:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158338701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:29:50,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:29:50,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 17:29:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694717088] [2025-03-08 17:29:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:29:50,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:29:50,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:29:50,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:29:50,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:29:50,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:29:50,473 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) [2025-03-08 17:29:50,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:29:50,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:29:50,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:29:51,125 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2025-03-08 17:29:51,126 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2025-03-08 17:29:51,132 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. [2025-03-08 17:29:51,150 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2025-03-08 17:29:51,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2025-03-08 17:29:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:29:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:29:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2025-03-08 17:29:51,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2025-03-08 17:29:51,162 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2025-03-08 17:29:51,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2025-03-08 17:29:51,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-08 17:29:51,173 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2025-03-08 17:29:51,175 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} [2025-03-08 17:29:51,178 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2025-03-08 17:29:51,179 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2025-03-08 17:29:51,179 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) [2025-03-08 17:29:51,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:29:51,180 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] [2025-03-08 17:29:51,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:29:51,180 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)] === [2025-03-08 17:29:51,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:29:51,181 INFO L85 PathProgramCache]: Analyzing trace with hash 671603589, now seen corresponding path program 1 times [2025-03-08 17:29:51,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:29:51,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866532378] [2025-03-08 17:29:51,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:29:51,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:29:51,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 17:29:51,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 17:29:51,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:29:51,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:29:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 17:29:51,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:29:51,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866532378] [2025-03-08 17:29:51,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866532378] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:29:51,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005872499] [2025-03-08 17:29:51,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:29:51,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:29:51,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:29:51,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:29:51,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 17:29:51,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 17:29:51,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 17:29:51,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:29:51,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:29:51,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 17:29:51,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:29:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 17:29:51,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:29:51,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 17:29:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005872499] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:29:51,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:29:51,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-03-08 17:29:51,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901527201] [2025-03-08 17:29:51,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:29:51,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:29:51,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:29:51,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:29:51,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:29:51,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:29:51,608 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) [2025-03-08 17:29:51,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:29:51,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:29:51,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:29:52,088 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2025-03-08 17:29:52,088 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-08 17:29:52,092 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. [2025-03-08 17:29:52,106 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2025-03-08 17:29:52,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2025-03-08 17:29:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:29:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:29:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-08 17:29:52,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2025-03-08 17:29:52,108 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2025-03-08 17:29:52,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2025-03-08 17:29:52,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:29:52,111 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2025-03-08 17:29:52,112 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} [2025-03-08 17:29:52,113 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2025-03-08 17:29:52,113 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2025-03-08 17:29:52,113 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) [2025-03-08 17:29:52,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:29:52,113 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] [2025-03-08 17:29:52,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 17:29:52,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:29:52,319 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)] === [2025-03-08 17:29:52,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:29:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1245307706, now seen corresponding path program 2 times [2025-03-08 17:29:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:29:52,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436723610] [2025-03-08 17:29:52,320 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:29:52,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:29:52,339 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-08 17:29:52,374 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-08 17:29:52,375 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:29:52,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:29:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 17:29:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:29:52,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436723610] [2025-03-08 17:29:52,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436723610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:29:52,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:29:52,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:29:52,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544477572] [2025-03-08 17:29:52,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:29:52,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:29:52,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:29:52,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:29:52,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:29:52,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:29:52,939 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) [2025-03-08 17:29:52,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:29:52,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:29:52,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:29:53,894 INFO L124 PetriNetUnfolderBase]: 4763/6629 cut-off events. [2025-03-08 17:29:53,894 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2025-03-08 17:29:53,902 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. [2025-03-08 17:29:53,921 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 107 selfloop transitions, 14 changer transitions 1/123 dead transitions. [2025-03-08 17:29:53,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 123 transitions, 606 flow [2025-03-08 17:29:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:29:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:29:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2025-03-08 17:29:53,923 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5346938775510204 [2025-03-08 17:29:53,923 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 131 transitions. [2025-03-08 17:29:53,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 123 transitions, 606 flow [2025-03-08 17:29:53,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 123 transitions, 582 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-03-08 17:29:53,929 INFO L231 Difference]: Finished difference. Result has 54 places, 68 transitions, 294 flow [2025-03-08 17:29:53,930 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} [2025-03-08 17:29:53,930 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2025-03-08 17:29:53,930 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 68 transitions, 294 flow [2025-03-08 17:29:53,930 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) [2025-03-08 17:29:53,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:29:53,930 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] [2025-03-08 17:29:53,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:29:53,931 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)] === [2025-03-08 17:29:53,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:29:53,931 INFO L85 PathProgramCache]: Analyzing trace with hash 407664732, now seen corresponding path program 3 times [2025-03-08 17:29:53,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:29:53,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217562377] [2025-03-08 17:29:53,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:29:53,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:29:53,947 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 3 equivalence classes. [2025-03-08 17:29:53,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-08 17:29:53,966 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:29:53,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:29:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 17:29:54,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:29:54,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217562377] [2025-03-08 17:29:54,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217562377] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:29:54,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:29:54,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:29:54,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530238334] [2025-03-08 17:29:54,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:29:54,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:29:54,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:29:54,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:29:54,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:29:54,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:29:54,463 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) [2025-03-08 17:29:54,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:29:54,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:29:54,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:29:56,223 INFO L124 PetriNetUnfolderBase]: 9600/13483 cut-off events. [2025-03-08 17:29:56,224 INFO L125 PetriNetUnfolderBase]: For 4589/4589 co-relation queries the response was YES. [2025-03-08 17:29:56,243 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. [2025-03-08 17:29:56,285 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 158 selfloop transitions, 35 changer transitions 1/195 dead transitions. [2025-03-08 17:29:56,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 195 transitions, 1087 flow [2025-03-08 17:29:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:29:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:29:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2025-03-08 17:29:56,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5451895043731778 [2025-03-08 17:29:56,289 INFO L175 Difference]: Start difference. First operand has 54 places, 68 transitions, 294 flow. Second operand 7 states and 187 transitions. [2025-03-08 17:29:56,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 195 transitions, 1087 flow [2025-03-08 17:29:56,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 195 transitions, 1087 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 17:29:56,313 INFO L231 Difference]: Finished difference. Result has 65 places, 100 transitions, 601 flow [2025-03-08 17:29:56,314 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} [2025-03-08 17:29:56,315 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2025-03-08 17:29:56,315 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 100 transitions, 601 flow [2025-03-08 17:29:56,316 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) [2025-03-08 17:29:56,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:29:56,316 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] [2025-03-08 17:29:56,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:29:56,316 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)] === [2025-03-08 17:29:56,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:29:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash 382692966, now seen corresponding path program 4 times [2025-03-08 17:29:56,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:29:56,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003820726] [2025-03-08 17:29:56,317 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:29:56,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:29:56,335 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-08 17:29:56,353 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 17:29:56,355 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:29:56,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:29:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 17:29:56,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:29:56,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003820726] [2025-03-08 17:29:56,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003820726] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:29:56,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345022087] [2025-03-08 17:29:56,507 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:29:56,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:29:56,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:29:56,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:29:56,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 17:29:56,629 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-08 17:29:56,667 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 17:29:56,668 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:29:56,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:29:56,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 17:29:56,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:29:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 17:29:56,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:29:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 17:29:56,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345022087] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:29:56,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:29:56,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-03-08 17:29:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160501484] [2025-03-08 17:29:56,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:29:56,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 17:29:56,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:29:56,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 17:29:56,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2025-03-08 17:29:56,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:29:56,806 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) [2025-03-08 17:29:56,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:29:56,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:29:56,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:29:58,418 INFO L124 PetriNetUnfolderBase]: 9600/13486 cut-off events. [2025-03-08 17:29:58,418 INFO L125 PetriNetUnfolderBase]: For 16068/16068 co-relation queries the response was YES. [2025-03-08 17:29:58,455 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. [2025-03-08 17:29:58,491 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 84 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2025-03-08 17:29:58,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 823 flow [2025-03-08 17:29:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:29:58,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:29:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-03-08 17:29:58,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2025-03-08 17:29:58,493 INFO L175 Difference]: Start difference. First operand has 65 places, 100 transitions, 601 flow. Second operand 7 states and 87 transitions. [2025-03-08 17:29:58,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 823 flow [2025-03-08 17:29:58,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 103 transitions, 811 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-08 17:29:58,651 INFO L231 Difference]: Finished difference. Result has 72 places, 103 transitions, 657 flow [2025-03-08 17:29:58,652 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} [2025-03-08 17:29:58,654 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2025-03-08 17:29:58,654 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 103 transitions, 657 flow [2025-03-08 17:29:58,654 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) [2025-03-08 17:29:58,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:29:58,654 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] [2025-03-08 17:29:58,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 17:29:58,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:29:58,855 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)] === [2025-03-08 17:29:58,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:29:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash 292873019, now seen corresponding path program 5 times [2025-03-08 17:29:58,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:29:58,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835487539] [2025-03-08 17:29:58,857 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:29:58,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:29:58,877 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-03-08 17:29:58,925 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 17:29:58,926 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-08 17:29:58,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:29:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:29:59,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:29:59,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835487539] [2025-03-08 17:29:59,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835487539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:29:59,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:29:59,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:29:59,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656530226] [2025-03-08 17:29:59,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:29:59,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:29:59,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:29:59,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:29:59,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:29:59,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:29:59,409 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) [2025-03-08 17:29:59,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:29:59,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:29:59,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:01,392 INFO L124 PetriNetUnfolderBase]: 12367/17476 cut-off events. [2025-03-08 17:30:01,392 INFO L125 PetriNetUnfolderBase]: For 17887/17887 co-relation queries the response was YES. [2025-03-08 17:30:01,430 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. [2025-03-08 17:30:01,473 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 147 selfloop transitions, 46 changer transitions 4/198 dead transitions. [2025-03-08 17:30:01,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 198 transitions, 1465 flow [2025-03-08 17:30:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:30:01,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:30:01,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2025-03-08 17:30:01,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5877551020408164 [2025-03-08 17:30:01,474 INFO L175 Difference]: Start difference. First operand has 72 places, 103 transitions, 657 flow. Second operand 5 states and 144 transitions. [2025-03-08 17:30:01,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 198 transitions, 1465 flow [2025-03-08 17:30:01,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 198 transitions, 1429 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-08 17:30:01,600 INFO L231 Difference]: Finished difference. Result has 76 places, 123 transitions, 981 flow [2025-03-08 17:30:01,601 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} [2025-03-08 17:30:01,601 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2025-03-08 17:30:01,601 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 123 transitions, 981 flow [2025-03-08 17:30:01,601 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) [2025-03-08 17:30:01,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:01,602 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] [2025-03-08 17:30:01,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:30:01,602 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)] === [2025-03-08 17:30:01,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash 192323227, now seen corresponding path program 6 times [2025-03-08 17:30:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:01,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542170641] [2025-03-08 17:30:01,602 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:30:01,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:01,616 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-03-08 17:30:01,624 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-08 17:30:01,625 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-08 17:30:01,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542170641] [2025-03-08 17:30:01,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542170641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:01,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:01,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:30:01,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634626347] [2025-03-08 17:30:01,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:01,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:30:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:01,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:30:01,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:30:01,877 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:01,877 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) [2025-03-08 17:30:01,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:01,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:01,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:03,640 INFO L124 PetriNetUnfolderBase]: 12306/17367 cut-off events. [2025-03-08 17:30:03,640 INFO L125 PetriNetUnfolderBase]: For 35526/35526 co-relation queries the response was YES. [2025-03-08 17:30:03,670 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. [2025-03-08 17:30:03,710 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 155 selfloop transitions, 25 changer transitions 2/183 dead transitions. [2025-03-08 17:30:03,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 183 transitions, 1591 flow [2025-03-08 17:30:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:30:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:30:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2025-03-08 17:30:03,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2025-03-08 17:30:03,711 INFO L175 Difference]: Start difference. First operand has 76 places, 123 transitions, 981 flow. Second operand 5 states and 127 transitions. [2025-03-08 17:30:03,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 183 transitions, 1591 flow [2025-03-08 17:30:03,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 183 transitions, 1575 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-03-08 17:30:03,936 INFO L231 Difference]: Finished difference. Result has 83 places, 131 transitions, 1162 flow [2025-03-08 17:30:03,937 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} [2025-03-08 17:30:03,937 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2025-03-08 17:30:03,937 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 131 transitions, 1162 flow [2025-03-08 17:30:03,937 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) [2025-03-08 17:30:03,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:03,937 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] [2025-03-08 17:30:03,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:30:03,938 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)] === [2025-03-08 17:30:03,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash -168228379, now seen corresponding path program 7 times [2025-03-08 17:30:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621688598] [2025-03-08 17:30:03,938 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:30:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:03,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 17:30:03,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 17:30:03,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:03,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:04,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621688598] [2025-03-08 17:30:04,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621688598] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:04,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:04,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:30:04,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818148413] [2025-03-08 17:30:04,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:04,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:30:04,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:04,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:30:04,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:30:04,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:04,438 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) [2025-03-08 17:30:04,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:04,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:04,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:06,601 INFO L124 PetriNetUnfolderBase]: 13907/19654 cut-off events. [2025-03-08 17:30:06,601 INFO L125 PetriNetUnfolderBase]: For 49443/49443 co-relation queries the response was YES. [2025-03-08 17:30:06,659 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. [2025-03-08 17:30:06,701 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 171 selfloop transitions, 60 changer transitions 1/233 dead transitions. [2025-03-08 17:30:06,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 233 transitions, 2167 flow [2025-03-08 17:30:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:30:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:30:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2025-03-08 17:30:06,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2025-03-08 17:30:06,702 INFO L175 Difference]: Start difference. First operand has 83 places, 131 transitions, 1162 flow. Second operand 5 states and 148 transitions. [2025-03-08 17:30:06,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 233 transitions, 2167 flow [2025-03-08 17:30:06,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 233 transitions, 2091 flow, removed 38 selfloop flow, removed 0 redundant places. [2025-03-08 17:30:06,951 INFO L231 Difference]: Finished difference. Result has 90 places, 155 transitions, 1576 flow [2025-03-08 17:30:06,951 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} [2025-03-08 17:30:06,951 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2025-03-08 17:30:06,951 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 155 transitions, 1576 flow [2025-03-08 17:30:06,952 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) [2025-03-08 17:30:06,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:06,952 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] [2025-03-08 17:30:06,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:30:06,952 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)] === [2025-03-08 17:30:06,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -520239365, now seen corresponding path program 8 times [2025-03-08 17:30:06,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:06,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766135882] [2025-03-08 17:30:06,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:30:06,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:06,966 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-08 17:30:06,973 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-08 17:30:06,973 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:30:06,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:07,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:07,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766135882] [2025-03-08 17:30:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766135882] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:07,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:07,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:30:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540338914] [2025-03-08 17:30:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:07,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:30:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:07,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:30:07,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:30:07,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:07,226 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) [2025-03-08 17:30:07,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:07,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:07,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:10,566 INFO L124 PetriNetUnfolderBase]: 14625/20705 cut-off events. [2025-03-08 17:30:10,566 INFO L125 PetriNetUnfolderBase]: For 65362/65362 co-relation queries the response was YES. [2025-03-08 17:30:10,623 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. [2025-03-08 17:30:10,674 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 178 selfloop transitions, 88 changer transitions 2/269 dead transitions. [2025-03-08 17:30:10,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 269 transitions, 2667 flow [2025-03-08 17:30:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:30:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:30:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2025-03-08 17:30:10,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2025-03-08 17:30:10,675 INFO L175 Difference]: Start difference. First operand has 90 places, 155 transitions, 1576 flow. Second operand 6 states and 180 transitions. [2025-03-08 17:30:10,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 269 transitions, 2667 flow [2025-03-08 17:30:10,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 269 transitions, 2628 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:30:10,923 INFO L231 Difference]: Finished difference. Result has 98 places, 182 transitions, 2193 flow [2025-03-08 17:30:10,923 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} [2025-03-08 17:30:10,923 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2025-03-08 17:30:10,923 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 182 transitions, 2193 flow [2025-03-08 17:30:10,923 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) [2025-03-08 17:30:10,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:10,923 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] [2025-03-08 17:30:10,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:30:10,924 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)] === [2025-03-08 17:30:10,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:10,924 INFO L85 PathProgramCache]: Analyzing trace with hash -27483939, now seen corresponding path program 1 times [2025-03-08 17:30:10,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:10,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82247880] [2025-03-08 17:30:10,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:10,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:10,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-08 17:30:10,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 17:30:10,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:10,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:11,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:11,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82247880] [2025-03-08 17:30:11,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82247880] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:11,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:11,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:30:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587440746] [2025-03-08 17:30:11,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:11,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:30:11,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:11,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:30:11,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:30:11,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:11,069 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) [2025-03-08 17:30:11,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:11,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:11,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:13,317 INFO L124 PetriNetUnfolderBase]: 15034/21321 cut-off events. [2025-03-08 17:30:13,317 INFO L125 PetriNetUnfolderBase]: For 98373/98373 co-relation queries the response was YES. [2025-03-08 17:30:13,424 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. [2025-03-08 17:30:13,476 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 184 selfloop transitions, 12 changer transitions 47/244 dead transitions. [2025-03-08 17:30:13,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 244 transitions, 3155 flow [2025-03-08 17:30:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:30:13,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:30:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2025-03-08 17:30:13,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2025-03-08 17:30:13,477 INFO L175 Difference]: Start difference. First operand has 98 places, 182 transitions, 2193 flow. Second operand 4 states and 103 transitions. [2025-03-08 17:30:13,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 244 transitions, 3155 flow [2025-03-08 17:30:13,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 244 transitions, 3125 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-03-08 17:30:13,894 INFO L231 Difference]: Finished difference. Result has 104 places, 166 transitions, 2001 flow [2025-03-08 17:30:13,894 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} [2025-03-08 17:30:13,895 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2025-03-08 17:30:13,895 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 166 transitions, 2001 flow [2025-03-08 17:30:13,895 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) [2025-03-08 17:30:13,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:13,895 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] [2025-03-08 17:30:13,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:30:13,895 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)] === [2025-03-08 17:30:13,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1756369036, now seen corresponding path program 1 times [2025-03-08 17:30:13,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:13,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370187302] [2025-03-08 17:30:13,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:13,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-08 17:30:13,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 17:30:13,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:13,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:14,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:14,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370187302] [2025-03-08 17:30:14,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370187302] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:14,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:14,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:30:14,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458675885] [2025-03-08 17:30:14,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:14,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:30:14,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:14,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:30:14,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:30:14,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:14,002 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) [2025-03-08 17:30:14,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:14,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:14,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:16,098 INFO L124 PetriNetUnfolderBase]: 14520/20742 cut-off events. [2025-03-08 17:30:16,098 INFO L125 PetriNetUnfolderBase]: For 90229/90229 co-relation queries the response was YES. [2025-03-08 17:30:16,190 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. [2025-03-08 17:30:16,240 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 161 selfloop transitions, 14 changer transitions 50/226 dead transitions. [2025-03-08 17:30:16,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 226 transitions, 2939 flow [2025-03-08 17:30:16,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:30:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:30:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-03-08 17:30:16,241 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2025-03-08 17:30:16,241 INFO L175 Difference]: Start difference. First operand has 104 places, 166 transitions, 2001 flow. Second operand 4 states and 101 transitions. [2025-03-08 17:30:16,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 226 transitions, 2939 flow [2025-03-08 17:30:16,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 226 transitions, 2895 flow, removed 10 selfloop flow, removed 3 redundant places. [2025-03-08 17:30:16,576 INFO L231 Difference]: Finished difference. Result has 106 places, 151 transitions, 1861 flow [2025-03-08 17:30:16,576 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} [2025-03-08 17:30:16,576 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2025-03-08 17:30:16,576 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 151 transitions, 1861 flow [2025-03-08 17:30:16,577 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) [2025-03-08 17:30:16,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:16,577 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] [2025-03-08 17:30:16,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:30:16,577 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)] === [2025-03-08 17:30:16,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:16,577 INFO L85 PathProgramCache]: Analyzing trace with hash 947627020, now seen corresponding path program 1 times [2025-03-08 17:30:16,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:16,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975074107] [2025-03-08 17:30:16,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:16,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:16,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-08 17:30:16,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 17:30:16,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:16,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:16,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975074107] [2025-03-08 17:30:16,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975074107] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:16,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:16,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:30:16,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953361867] [2025-03-08 17:30:16,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:16,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:30:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:16,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:30:16,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:30:16,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:16,712 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) [2025-03-08 17:30:16,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:16,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:16,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:18,740 INFO L124 PetriNetUnfolderBase]: 13580/19483 cut-off events. [2025-03-08 17:30:18,740 INFO L125 PetriNetUnfolderBase]: For 84111/84111 co-relation queries the response was YES. [2025-03-08 17:30:18,786 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. [2025-03-08 17:30:18,820 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 162 selfloop transitions, 14 changer transitions 30/207 dead transitions. [2025-03-08 17:30:18,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 207 transitions, 2686 flow [2025-03-08 17:30:18,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:30:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:30:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-03-08 17:30:18,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2025-03-08 17:30:18,821 INFO L175 Difference]: Start difference. First operand has 106 places, 151 transitions, 1861 flow. Second operand 4 states and 99 transitions. [2025-03-08 17:30:18,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 207 transitions, 2686 flow [2025-03-08 17:30:19,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 207 transitions, 2649 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-08 17:30:19,045 INFO L231 Difference]: Finished difference. Result has 105 places, 154 transitions, 1954 flow [2025-03-08 17:30:19,045 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} [2025-03-08 17:30:19,046 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2025-03-08 17:30:19,046 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 154 transitions, 1954 flow [2025-03-08 17:30:19,047 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) [2025-03-08 17:30:19,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:19,047 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] [2025-03-08 17:30:19,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 17:30:19,047 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)] === [2025-03-08 17:30:19,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1085018088, now seen corresponding path program 2 times [2025-03-08 17:30:19,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:19,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899919315] [2025-03-08 17:30:19,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:30:19,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:19,060 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-08 17:30:19,064 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-03-08 17:30:19,064 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:30:19,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899919315] [2025-03-08 17:30:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899919315] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:19,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:19,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:30:19,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700849991] [2025-03-08 17:30:19,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:19,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:30:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:19,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:30:19,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:30:19,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:19,130 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) [2025-03-08 17:30:19,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:19,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:19,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:21,255 INFO L124 PetriNetUnfolderBase]: 12983/18695 cut-off events. [2025-03-08 17:30:21,256 INFO L125 PetriNetUnfolderBase]: For 81999/81999 co-relation queries the response was YES. [2025-03-08 17:30:21,324 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. [2025-03-08 17:30:21,370 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 147 selfloop transitions, 3 changer transitions 49/200 dead transitions. [2025-03-08 17:30:21,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 200 transitions, 2605 flow [2025-03-08 17:30:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:30:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:30:21,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-03-08 17:30:21,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-08 17:30:21,372 INFO L175 Difference]: Start difference. First operand has 105 places, 154 transitions, 1954 flow. Second operand 4 states and 98 transitions. [2025-03-08 17:30:21,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 200 transitions, 2605 flow [2025-03-08 17:30:21,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 200 transitions, 2537 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-08 17:30:21,603 INFO L231 Difference]: Finished difference. Result has 106 places, 133 transitions, 1526 flow [2025-03-08 17:30:21,603 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} [2025-03-08 17:30:21,603 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2025-03-08 17:30:21,603 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 133 transitions, 1526 flow [2025-03-08 17:30:21,604 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) [2025-03-08 17:30:21,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:21,604 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] [2025-03-08 17:30:21,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 17:30:21,604 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)] === [2025-03-08 17:30:21,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:21,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1562278536, now seen corresponding path program 2 times [2025-03-08 17:30:21,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:21,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302606348] [2025-03-08 17:30:21,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:30:21,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:21,620 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-08 17:30:21,625 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-03-08 17:30:21,625 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:30:21,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:21,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302606348] [2025-03-08 17:30:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302606348] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:21,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:21,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:30:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288002863] [2025-03-08 17:30:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:21,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:30:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:21,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:30:21,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:30:21,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:21,721 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) [2025-03-08 17:30:21,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:21,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:21,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:23,795 INFO L124 PetriNetUnfolderBase]: 11629/16697 cut-off events. [2025-03-08 17:30:23,795 INFO L125 PetriNetUnfolderBase]: For 61867/61867 co-relation queries the response was YES. [2025-03-08 17:30:23,893 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. [2025-03-08 17:30:23,935 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 130 selfloop transitions, 4 changer transitions 38/173 dead transitions. [2025-03-08 17:30:23,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 173 transitions, 2094 flow [2025-03-08 17:30:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:30:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:30:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-03-08 17:30:23,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2025-03-08 17:30:23,936 INFO L175 Difference]: Start difference. First operand has 106 places, 133 transitions, 1526 flow. Second operand 4 states and 94 transitions. [2025-03-08 17:30:23,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 173 transitions, 2094 flow [2025-03-08 17:30:24,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 173 transitions, 2011 flow, removed 18 selfloop flow, removed 7 redundant places. [2025-03-08 17:30:24,099 INFO L231 Difference]: Finished difference. Result has 100 places, 119 transitions, 1245 flow [2025-03-08 17:30:24,099 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} [2025-03-08 17:30:24,100 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2025-03-08 17:30:24,100 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 119 transitions, 1245 flow [2025-03-08 17:30:24,100 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) [2025-03-08 17:30:24,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:24,100 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] [2025-03-08 17:30:24,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 17:30:24,100 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)] === [2025-03-08 17:30:24,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:24,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1316623417, now seen corresponding path program 2 times [2025-03-08 17:30:24,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:24,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123445985] [2025-03-08 17:30:24,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:30:24,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:24,112 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-08 17:30:24,115 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-03-08 17:30:24,116 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:30:24,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:24,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:24,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123445985] [2025-03-08 17:30:24,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123445985] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:24,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:24,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:30:24,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741866090] [2025-03-08 17:30:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:24,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:30:24,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:24,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:30:24,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:30:24,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:24,173 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) [2025-03-08 17:30:24,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:24,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:24,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:25,543 INFO L124 PetriNetUnfolderBase]: 10078/14355 cut-off events. [2025-03-08 17:30:25,544 INFO L125 PetriNetUnfolderBase]: For 48503/48503 co-relation queries the response was YES. [2025-03-08 17:30:25,587 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. [2025-03-08 17:30:25,617 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 90 selfloop transitions, 0 changer transitions 58/149 dead transitions. [2025-03-08 17:30:25,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 149 transitions, 1651 flow [2025-03-08 17:30:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:30:25,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:30:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-03-08 17:30:25,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-03-08 17:30:25,618 INFO L175 Difference]: Start difference. First operand has 100 places, 119 transitions, 1245 flow. Second operand 4 states and 91 transitions. [2025-03-08 17:30:25,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 149 transitions, 1651 flow [2025-03-08 17:30:25,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 149 transitions, 1472 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-03-08 17:30:25,711 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 687 flow [2025-03-08 17:30:25,711 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} [2025-03-08 17:30:25,711 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2025-03-08 17:30:25,711 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 687 flow [2025-03-08 17:30:25,712 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) [2025-03-08 17:30:25,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:25,712 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] [2025-03-08 17:30:25,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 17:30:25,712 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)] === [2025-03-08 17:30:25,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash -230824085, now seen corresponding path program 1 times [2025-03-08 17:30:25,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:25,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071536855] [2025-03-08 17:30:25,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:25,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:25,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 17:30:25,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 17:30:25,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:25,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-08 17:30:25,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071536855] [2025-03-08 17:30:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071536855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:25,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:25,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:30:25,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988713733] [2025-03-08 17:30:25,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:25,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:30:25,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:25,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:30:25,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:30:25,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:25,810 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) [2025-03-08 17:30:25,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:25,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:25,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:27,175 INFO L124 PetriNetUnfolderBase]: 10285/14526 cut-off events. [2025-03-08 17:30:27,175 INFO L125 PetriNetUnfolderBase]: For 29504/29504 co-relation queries the response was YES. [2025-03-08 17:30:27,208 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. [2025-03-08 17:30:27,234 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 111 selfloop transitions, 11 changer transitions 1/124 dead transitions. [2025-03-08 17:30:27,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 1124 flow [2025-03-08 17:30:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:30:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:30:27,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-03-08 17:30:27,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2025-03-08 17:30:27,235 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 687 flow. Second operand 3 states and 73 transitions. [2025-03-08 17:30:27,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 1124 flow [2025-03-08 17:30:27,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 124 transitions, 1009 flow, removed 23 selfloop flow, removed 8 redundant places. [2025-03-08 17:30:27,289 INFO L231 Difference]: Finished difference. Result has 79 places, 94 transitions, 658 flow [2025-03-08 17:30:27,289 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} [2025-03-08 17:30:27,290 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2025-03-08 17:30:27,290 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 94 transitions, 658 flow [2025-03-08 17:30:27,290 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) [2025-03-08 17:30:27,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:27,290 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] [2025-03-08 17:30:27,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 17:30:27,290 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)] === [2025-03-08 17:30:27,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:27,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2006019121, now seen corresponding path program 1 times [2025-03-08 17:30:27,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:27,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300749235] [2025-03-08 17:30:27,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:27,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:27,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-08 17:30:27,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 17:30:27,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:27,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-08 17:30:27,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:27,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300749235] [2025-03-08 17:30:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300749235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:27,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:30:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529364669] [2025-03-08 17:30:27,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:27,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:30:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:27,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:30:27,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:30:27,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:27,420 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) [2025-03-08 17:30:27,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:27,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:27,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:29,016 INFO L124 PetriNetUnfolderBase]: 12416/17542 cut-off events. [2025-03-08 17:30:29,016 INFO L125 PetriNetUnfolderBase]: For 26745/26745 co-relation queries the response was YES. [2025-03-08 17:30:29,076 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. [2025-03-08 17:30:29,119 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 111 selfloop transitions, 9 changer transitions 1/122 dead transitions. [2025-03-08 17:30:29,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 1041 flow [2025-03-08 17:30:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:30:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:30:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-03-08 17:30:29,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2025-03-08 17:30:29,121 INFO L175 Difference]: Start difference. First operand has 79 places, 94 transitions, 658 flow. Second operand 3 states and 71 transitions. [2025-03-08 17:30:29,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 1041 flow [2025-03-08 17:30:29,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 1029 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:30:29,218 INFO L231 Difference]: Finished difference. Result has 81 places, 98 transitions, 726 flow [2025-03-08 17:30:29,218 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} [2025-03-08 17:30:29,218 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2025-03-08 17:30:29,218 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 98 transitions, 726 flow [2025-03-08 17:30:29,218 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) [2025-03-08 17:30:29,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:29,218 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] [2025-03-08 17:30:29,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 17:30:29,219 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)] === [2025-03-08 17:30:29,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash -490967414, now seen corresponding path program 1 times [2025-03-08 17:30:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:29,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297741447] [2025-03-08 17:30:29,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:29,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-08 17:30:29,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-08 17:30:29,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:29,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:29,350 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-08 17:30:29,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:29,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297741447] [2025-03-08 17:30:29,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297741447] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:29,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:29,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:30:29,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484329081] [2025-03-08 17:30:29,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:29,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:30:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:29,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:30:29,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:30:29,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:29,353 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) [2025-03-08 17:30:29,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:29,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:29,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:31,466 INFO L124 PetriNetUnfolderBase]: 16067/22717 cut-off events. [2025-03-08 17:30:31,467 INFO L125 PetriNetUnfolderBase]: For 38395/38395 co-relation queries the response was YES. [2025-03-08 17:30:31,625 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. [2025-03-08 17:30:31,677 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 128 selfloop transitions, 11 changer transitions 1/141 dead transitions. [2025-03-08 17:30:31,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 141 transitions, 1297 flow [2025-03-08 17:30:31,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:30:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:30:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-03-08 17:30:31,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2025-03-08 17:30:31,678 INFO L175 Difference]: Start difference. First operand has 81 places, 98 transitions, 726 flow. Second operand 3 states and 72 transitions. [2025-03-08 17:30:31,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 141 transitions, 1297 flow [2025-03-08 17:30:31,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 141 transitions, 1284 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:30:31,795 INFO L231 Difference]: Finished difference. Result has 83 places, 100 transitions, 769 flow [2025-03-08 17:30:31,795 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} [2025-03-08 17:30:31,795 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2025-03-08 17:30:31,795 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 100 transitions, 769 flow [2025-03-08 17:30:31,795 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) [2025-03-08 17:30:31,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:31,795 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] [2025-03-08 17:30:31,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 17:30:31,795 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)] === [2025-03-08 17:30:31,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 563604820, now seen corresponding path program 1 times [2025-03-08 17:30:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267684640] [2025-03-08 17:30:31,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:31,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-08 17:30:32,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-08 17:30:32,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:32,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:30:41,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:41,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267684640] [2025-03-08 17:30:41,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267684640] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:30:41,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099698400] [2025-03-08 17:30:41,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:41,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:30:41,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:30:41,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:30:41,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 17:30:41,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-08 17:30:41,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-08 17:30:41,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:41,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:41,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-03-08 17:30:41,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:30:42,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 17:30:42,323 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 [2025-03-08 17:30:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-08 17:30:42,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:30:44,444 INFO L349 Elim1Store]: treesize reduction 5, result has 95.8 percent of original size [2025-03-08 17:30:44,444 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 [2025-03-08 17:30:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-08 17:30:45,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099698400] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:30:45,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:30:45,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 9, 9] total 44 [2025-03-08 17:30:45,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069823004] [2025-03-08 17:30:45,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:30:45,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-08 17:30:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:45,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-08 17:30:45,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1755, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 17:30:45,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-08 17:30:45,032 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) [2025-03-08 17:30:45,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:45,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-08 17:30:45,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand