./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/03_incdec.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/03_incdec.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7242322569cf2f27ee72f2a65e0d58ced23407c575f0c8898b19424239a034d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:20:00,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:20:00,146 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:20:00,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:20:00,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:20:00,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:20:00,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:20:00,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:20:00,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:20:00,178 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:20:00,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:20:00,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:20:00,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:20:00,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:20:00,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:20:00,181 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:20:00,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:20:00,181 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:20:00,181 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:20:00,181 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:20:00,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:20:00,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:20:00,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:20:00,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:20:00,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:20:00,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:20:00,182 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:20:00,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:20:00,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:20:00,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:20:00,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:20:00,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:20:00,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:20:00,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:20:00,182 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 -> c7242322569cf2f27ee72f2a65e0d58ced23407c575f0c8898b19424239a034d [2025-03-17 06:20:00,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:20:00,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:20:00,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:20:00,434 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:20:00,435 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:20:00,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/03_incdec.i [2025-03-17 06:20:01,580 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83bb7db88/2eb857ef8d9d4897aa4c0b90c3170565/FLAG855dcd0a1 [2025-03-17 06:20:01,881 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:20:01,882 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i [2025-03-17 06:20:01,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83bb7db88/2eb857ef8d9d4897aa4c0b90c3170565/FLAG855dcd0a1 [2025-03-17 06:20:01,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83bb7db88/2eb857ef8d9d4897aa4c0b90c3170565 [2025-03-17 06:20:01,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:20:01,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:20:01,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:20:01,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:20:01,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:20:01,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:20:01" (1/1) ... [2025-03-17 06:20:01,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c359a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:01, skipping insertion in model container [2025-03-17 06:20:01,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:20:01" (1/1) ... [2025-03-17 06:20:01,950 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:20:02,183 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[30737,30750] [2025-03-17 06:20:02,190 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[31112,31125] [2025-03-17 06:20:02,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:20:02,211 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:20:02,244 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[30737,30750] [2025-03-17 06:20:02,248 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[31112,31125] [2025-03-17 06:20:02,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:20:02,277 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:20:02,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02 WrapperNode [2025-03-17 06:20:02,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:20:02,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:20:02,280 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:20:02,280 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:20:02,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,313 INFO L138 Inliner]: procedures = 164, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 94 [2025-03-17 06:20:02,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:20:02,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:20:02,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:20:02,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:20:02,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,339 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-03-17 06:20:02,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,345 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:20:02,352 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:20:02,352 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:20:02,352 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:20:02,352 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (1/1) ... [2025-03-17 06:20:02,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:20:02,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:20:02,383 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) [2025-03-17 06:20:02,387 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 [2025-03-17 06:20:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 06:20:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 06:20:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 06:20:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:20:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:20:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:20:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 06:20:02,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:20:02,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:20:02,410 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:20:02,515 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:20:02,517 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:20:02,672 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:20:02,672 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:20:02,769 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:20:02,769 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:20:02,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:20:02 BoogieIcfgContainer [2025-03-17 06:20:02,770 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:20:02,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:20:02,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:20:02,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:20:02,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:20:01" (1/3) ... [2025-03-17 06:20:02,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f52d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:20:02, skipping insertion in model container [2025-03-17 06:20:02,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:02" (2/3) ... [2025-03-17 06:20:02,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f52d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:20:02, skipping insertion in model container [2025-03-17 06:20:02,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:20:02" (3/3) ... [2025-03-17 06:20:02,779 INFO L128 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2025-03-17 06:20:02,791 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:20:02,792 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 03_incdec.i that has 2 procedures, 39 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-03-17 06:20:02,792 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:20:02,844 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:20:02,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 44 transitions, 92 flow [2025-03-17 06:20:02,900 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-03-17 06:20:02,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:20:02,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 5/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2025-03-17 06:20:02,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 44 transitions, 92 flow [2025-03-17 06:20:02,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 44 transitions, 92 flow [2025-03-17 06:20:02,916 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:20:02,924 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;@4f959752, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:20:02,924 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-17 06:20:02,930 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:20:02,930 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 06:20:02,930 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:20:02,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:20:02,931 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 06:20:02,931 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 06:20:02,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:20:02,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1306168277, now seen corresponding path program 1 times [2025-03-17 06:20:02,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:20:02,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311999875] [2025-03-17 06:20:02,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:20:02,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:20:03,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 06:20:03,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 06:20:03,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:03,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:03,025 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 06:20:03,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 06:20:03,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 06:20:03,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:03,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:03,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 06:20:03,063 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 06:20:03,064 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-03-17 06:20:03,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-03-17 06:20:03,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2025-03-17 06:20:03,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2025-03-17 06:20:03,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-03-17 06:20:03,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:20:03,069 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 06:20:03,072 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 06:20:03,072 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 06:20:03,123 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:20:03,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 83 transitions, 176 flow [2025-03-17 06:20:03,155 INFO L124 PetriNetUnfolderBase]: 10/88 cut-off events. [2025-03-17 06:20:03,156 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 06:20:03,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 88 events. 10/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 291 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2025-03-17 06:20:03,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 83 transitions, 176 flow [2025-03-17 06:20:03,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 83 transitions, 176 flow [2025-03-17 06:20:03,161 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:20:03,163 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;@4f959752, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:20:03,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-17 06:20:03,170 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:20:03,172 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-17 06:20:03,172 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 06:20:03,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:20:03,172 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-17 06:20:03,172 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-17 06:20:03,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:20:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1744642368, now seen corresponding path program 1 times [2025-03-17 06:20:03,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:20:03,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075272505] [2025-03-17 06:20:03,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:20:03,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:20:03,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 06:20:03,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 06:20:03,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:03,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:03,197 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 06:20:03,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 06:20:03,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 06:20:03,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:03,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:03,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 06:20:03,219 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 06:20:03,220 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2025-03-17 06:20:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-03-17 06:20:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2025-03-17 06:20:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2025-03-17 06:20:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2025-03-17 06:20:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-03-17 06:20:03,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-03-17 06:20:03,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:20:03,220 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 06:20:03,221 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 06:20:03,221 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 06:20:03,290 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:20:03,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 122 transitions, 262 flow [2025-03-17 06:20:03,324 INFO L124 PetriNetUnfolderBase]: 15/130 cut-off events. [2025-03-17 06:20:03,326 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 06:20:03,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 15/130 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 550 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2025-03-17 06:20:03,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 122 transitions, 262 flow [2025-03-17 06:20:03,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 122 transitions, 262 flow [2025-03-17 06:20:03,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:20:03,334 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;@4f959752, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:20:03,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-17 06:20:03,347 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:20:03,348 INFO L124 PetriNetUnfolderBase]: 1/59 cut-off events. [2025-03-17 06:20:03,349 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 06:20:03,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:20:03,349 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-03-17 06:20:03,349 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2025-03-17 06:20:03,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:20:03,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1466632758, now seen corresponding path program 1 times [2025-03-17 06:20:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:20:03,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238178748] [2025-03-17 06:20:03,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:20:03,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:20:03,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 06:20:03,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 06:20:03,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:03,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:03,372 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 06:20:03,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 06:20:03,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 06:20:03,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:03,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:03,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 06:20:03,395 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 06:20:03,396 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-03-17 06:20:03,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2025-03-17 06:20:03,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2025-03-17 06:20:03,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2025-03-17 06:20:03,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2025-03-17 06:20:03,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2025-03-17 06:20:03,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2025-03-17 06:20:03,396 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2025-03-17 06:20:03,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2025-03-17 06:20:03,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:20:03,397 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 06:20:03,398 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 06:20:03,398 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-17 06:20:03,451 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:20:03,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 161 transitions, 350 flow [2025-03-17 06:20:03,487 INFO L124 PetriNetUnfolderBase]: 20/172 cut-off events. [2025-03-17 06:20:03,487 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 06:20:03,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 172 events. 20/172 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 769 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 155. Up to 5 conditions per place. [2025-03-17 06:20:03,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 161 transitions, 350 flow [2025-03-17 06:20:03,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 161 transitions, 350 flow [2025-03-17 06:20:03,494 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:20:03,494 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;@4f959752, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:20:03,494 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-03-17 06:20:03,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:20:03,507 INFO L124 PetriNetUnfolderBase]: 4/77 cut-off events. [2025-03-17 06:20:03,507 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-17 06:20:03,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:20:03,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:20:03,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-17 06:20:03,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:20:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1227159702, now seen corresponding path program 1 times [2025-03-17 06:20:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:20:03,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177642446] [2025-03-17 06:20:03,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:20:03,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:20:03,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 06:20:03,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 06:20:03,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:03,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:20:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:20:03,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:20:03,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177642446] [2025-03-17 06:20:03,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177642446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:20:03,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:20:03,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:20:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202356224] [2025-03-17 06:20:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:20:03,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:20:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:20:03,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:20:03,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:20:03,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 161 [2025-03-17 06:20:03,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 161 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2025-03-17 06:20:03,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:20:03,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 161 [2025-03-17 06:20:03,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand