./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/parallel-ticket-5.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 9c69d99d457f457373aeec8cf091a3652593de03a43f690cddfeb4bfa1e12a5f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:21:45,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:21:45,271 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:21:45,277 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:21:45,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:21:45,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:21:45,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:21:45,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:21:45,295 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:21:45,295 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:21:45,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:21:45,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:21:45,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:21:45,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:21:45,296 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:21:45,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:21:45,297 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:21:45,297 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:21:45,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:21:45,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:21:45,298 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 -> 9c69d99d457f457373aeec8cf091a3652593de03a43f690cddfeb4bfa1e12a5f [2025-03-04 02:21:45,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:21:45,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:21:45,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:21:45,554 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:21:45,555 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:21:45,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2025-03-04 02:21:46,751 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68baa56eb/e3787fca5a254440a000b9d057aef38f/FLAG329d8d360 [2025-03-04 02:21:46,936 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:21:46,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2025-03-04 02:21:46,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68baa56eb/e3787fca5a254440a000b9d057aef38f/FLAG329d8d360 [2025-03-04 02:21:46,976 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68baa56eb/e3787fca5a254440a000b9d057aef38f [2025-03-04 02:21:46,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:21:46,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:21:46,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:21:46,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:21:46,984 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:21:46,985 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:21:46" (1/1) ... [2025-03-04 02:21:46,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec123f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:46, skipping insertion in model container [2025-03-04 02:21:46,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:21:46" (1/1) ... [2025-03-04 02:21:47,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:21:47,133 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/parallel-ticket-5.wvr.c[2777,2790] [2025-03-04 02:21:47,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:21:47,150 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:21:47,174 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/parallel-ticket-5.wvr.c[2777,2790] [2025-03-04 02:21:47,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:21:47,190 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:21:47,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47 WrapperNode [2025-03-04 02:21:47,192 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:21:47,193 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:21:47,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:21:47,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:21:47,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,228 INFO L138 Inliner]: procedures = 21, calls = 18, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 204 [2025-03-04 02:21:47,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:21:47,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:21:47,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:21:47,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:21:47,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,239 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,258 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 02:21:47,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,264 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:21:47,271 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:21:47,272 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:21:47,273 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:21:47,273 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (1/1) ... [2025-03-04 02:21:47,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:21:47,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:21:47,297 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) [2025-03-04 02:21:47,300 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 [2025-03-04 02:21:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:21:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 02:21:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 02:21:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 02:21:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 02:21:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 02:21:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 02:21:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-04 02:21:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-04 02:21:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:21:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-03-04 02:21:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-03-04 02:21:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:21:47,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:21:47,320 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:21:47,410 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:21:47,412 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:21:47,667 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:21:47,667 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:21:47,805 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:21:47,808 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:21:47,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:21:47 BoogieIcfgContainer [2025-03-04 02:21:47,808 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:21:47,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:21:47,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:21:47,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:21:47,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:21:46" (1/3) ... [2025-03-04 02:21:47,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d92eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:21:47, skipping insertion in model container [2025-03-04 02:21:47,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:21:47" (2/3) ... [2025-03-04 02:21:47,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d92eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:21:47, skipping insertion in model container [2025-03-04 02:21:47,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:21:47" (3/3) ... [2025-03-04 02:21:47,817 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2025-03-04 02:21:47,826 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:21:47,827 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-5.wvr.c that has 6 procedures, 68 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-04 02:21:47,829 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:21:47,897 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2025-03-04 02:21:47,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 71 transitions, 177 flow [2025-03-04 02:21:47,978 INFO L124 PetriNetUnfolderBase]: 4/66 cut-off events. [2025-03-04 02:21:47,980 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-03-04 02:21:47,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 66 events. 4/66 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2025-03-04 02:21:47,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 71 transitions, 177 flow [2025-03-04 02:21:47,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 65 transitions, 160 flow [2025-03-04 02:21:47,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:21:48,011 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;@6fdcce80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:21:48,011 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 02:21:48,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:21:48,061 INFO L124 PetriNetUnfolderBase]: 4/64 cut-off events. [2025-03-04 02:21:48,061 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-03-04 02:21:48,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:21:48,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:21:48,062 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 3 more)] === [2025-03-04 02:21:48,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:21:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash 792261590, now seen corresponding path program 1 times [2025-03-04 02:21:48,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:21:48,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893034807] [2025-03-04 02:21:48,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:21:48,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:21:48,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-04 02:21:48,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-04 02:21:48,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:21:48,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:21:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:21:48,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:21:48,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893034807] [2025-03-04 02:21:48,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893034807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:21:48,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:21:48,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 02:21:48,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737629211] [2025-03-04 02:21:48,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:21:48,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:21:48,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:21:48,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:21:48,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:21:48,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 71 [2025-03-04 02:21:48,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2025-03-04 02:21:48,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:21:48,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 71 [2025-03-04 02:21:48,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:21:56,254 INFO L124 PetriNetUnfolderBase]: 137917/175716 cut-off events. [2025-03-04 02:21:56,255 INFO L125 PetriNetUnfolderBase]: For 8174/8174 co-relation queries the response was YES. [2025-03-04 02:21:56,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354422 conditions, 175716 events. 137917/175716 cut-off events. For 8174/8174 co-relation queries the response was YES. Maximal size of possible extension queue 5219. Compared 1048608 event pairs, 40503 based on Foata normal form. 1/171430 useless extension candidates. Maximal degree in co-relation 330809. Up to 119312 conditions per place. [2025-03-04 02:21:57,418 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 81 selfloop transitions, 7 changer transitions 1/103 dead transitions. [2025-03-04 02:21:57,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 438 flow [2025-03-04 02:21:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:21:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:21:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2025-03-04 02:21:57,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6901408450704225 [2025-03-04 02:21:57,430 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 160 flow. Second operand 3 states and 147 transitions. [2025-03-04 02:21:57,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 438 flow [2025-03-04 02:21:57,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 402 flow, removed 0 selfloop flow, removed 10 redundant places. [2025-03-04 02:21:57,884 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 179 flow [2025-03-04 02:21:57,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2025-03-04 02:21:57,892 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2025-03-04 02:21:57,893 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 179 flow [2025-03-04 02:21:57,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2025-03-04 02:21:57,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:21:57,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:21:57,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:21:57,895 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 3 more)] === [2025-03-04 02:21:57,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:21:57,896 INFO L85 PathProgramCache]: Analyzing trace with hash 430356164, now seen corresponding path program 1 times [2025-03-04 02:21:57,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:21:57,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49848357] [2025-03-04 02:21:57,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:21:57,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:21:57,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 02:21:57,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 02:21:57,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:21:57,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:21:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:21:57,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:21:57,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49848357] [2025-03-04 02:21:57,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49848357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:21:57,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:21:57,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 02:21:57,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453724571] [2025-03-04 02:21:57,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:21:57,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:21:57,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:21:57,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:21:57,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:21:57,976 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 71 [2025-03-04 02:21:57,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:21:57,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:21:57,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 71 [2025-03-04 02:21:57,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:22:09,156 INFO L124 PetriNetUnfolderBase]: 238281/303591 cut-off events. [2025-03-04 02:22:09,156 INFO L125 PetriNetUnfolderBase]: For 27841/27841 co-relation queries the response was YES. [2025-03-04 02:22:09,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655390 conditions, 303591 events. 238281/303591 cut-off events. For 27841/27841 co-relation queries the response was YES. Maximal size of possible extension queue 8437. Compared 1874425 event pairs, 165391 based on Foata normal form. 0/297115 useless extension candidates. Maximal degree in co-relation 343120. Up to 259616 conditions per place. [2025-03-04 02:22:10,565 INFO L140 encePairwiseOnDemand]: 58/71 looper letters, 92 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2025-03-04 02:22:10,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 481 flow [2025-03-04 02:22:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:22:10,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:22:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2025-03-04 02:22:10,569 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6103286384976526 [2025-03-04 02:22:10,569 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 179 flow. Second operand 3 states and 130 transitions. [2025-03-04 02:22:10,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 481 flow [2025-03-04 02:22:10,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 107 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 02:22:10,633 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 236 flow [2025-03-04 02:22:10,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2025-03-04 02:22:10,633 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -4 predicate places. [2025-03-04 02:22:10,634 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 236 flow [2025-03-04 02:22:10,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:22:10,634 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:22:10,634 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:22:10,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:22:10,634 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 3 more)] === [2025-03-04 02:22:10,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:22:10,635 INFO L85 PathProgramCache]: Analyzing trace with hash -831359238, now seen corresponding path program 1 times [2025-03-04 02:22:10,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:22:10,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105016204] [2025-03-04 02:22:10,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:22:10,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:22:10,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-04 02:22:10,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-04 02:22:10,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:22:10,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:22:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:22:10,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:22:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105016204] [2025-03-04 02:22:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105016204] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:22:10,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:22:10,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:22:10,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501200171] [2025-03-04 02:22:10,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:22:10,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:22:10,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:22:10,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:22:10,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:22:10,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 71 [2025-03-04 02:22:10,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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) [2025-03-04 02:22:10,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:22:10,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 71 [2025-03-04 02:22:10,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:22:19,643 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([483] L45-1-->L46-3: Formula: (= v_~x~0_14 0) InVars {} OutVars{~x~0=v_~x~0_14} AuxVars[] AssignedVars[~x~0][89], [4#L56-3true, 41#L111-1true, Black: 88#(= (mod ~b~0 256) 0), 22#L66-3true, 13#L46-3true, 97#(<= ~s~0 ~t~0), Black: 90#true, 92#(not (= ~x~0 1)), 23#thread4EXITtrue]) [2025-03-04 02:22:19,644 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2025-03-04 02:22:19,644 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2025-03-04 02:22:19,644 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2025-03-04 02:22:19,644 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event